{"id":33656,"date":"2024-11-25T16:16:37","date_gmt":"2024-11-25T08:16:37","guid":{"rendered":"https:\/\/fwq.ai\/blog\/33656\/"},"modified":"2024-11-25T16:16:37","modified_gmt":"2024-11-25T08:16:37","slug":"%e5%ae%9e%e7%8e%b0%e6%ac%b2%e7%bd%a2%e4%b8%8d%e8%83%bd%e7%9a%84%e7%bd%91%e6%98%93%e4%ba%91%e9%9f%b3%e4%b9%90%e5%ae%87%e5%ae%99%e5%b0%98%e5%9f%83%e7%89%b9%e6%95%88","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/33656\/","title":{"rendered":"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548"},"content":{"rendered":"<p>\u680f\u76ee\u4eca\u5929\u6559\u5927\u5bb6\u5b9e\u73b0\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\uff0c\u624b\u628a\u624b\u6559\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/5f8517a5212a2967.jpg\" class=\"aligncenter\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe\" 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decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/0eca44bf65dbf09ee128d44f37e71a60-1.gif\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe2\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe2\" \/><\/p>\n<p>\u54b3\u54b3\uff0c\u867d\u7136\u753b\u8d28\u582a\u6bd4AV\u753b\u8d28\uff0c\u4f46\u662f\u8fd8\u662f\u80fd\u770b\u7684\u51fa\u6765\u6548\u679c\u662f\u975e\u5e38\u4e0d\u9519\u7684\u3002\u90a3\u4e48\u4eca\u5929\u6211\u5c31\u5e26\u5c0f\u4f19\u4f34\u4eec\u4e00\u8d77\u4ece\u5934\u5230\u5c3e\u7684\u5b9e\u73b0\u4e00\u4e0b\u8fd9\u4e2a\u6548\u679c\u5427\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/0eca44bf65dbf09ee128d44f37e71a60-2.jpg\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe3\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe3\" 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decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/0eca44bf65dbf09ee128d44f37e71a60-3.jpg\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe4\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe4\" \/><\/p>\n<p>\u54b3\u54b3\uff0c\u5148\u522b\u9a82\uff0c\u5bb9\u6211\u8bf4\u5b8c\u561b\u3002<\/p>\n<p>\u5706\u5f62\u56fe\u7247\u7684\u8bdd\u6211\u4eec\u5c31\u7528Glide\u6765\u8fdb\u884c\u5b9e\u73b0\u628a\uff0c\u5176\u5b9e\u81ea\u5b9a\u4e49View\u5b9e\u73b0\u4e5f\u53ef\u4ee5\uff0c\u4f46\u6211\u4eec\u91cd\u70b9\u8fd8\u662f\u7c92\u5b50\u7279\u6548\u3002<\/p>\n<p>\u9996\u5148\u5b9a\u4e49\u4e00\u4e2aImageView<\/p>\n<pre>&lt;?xml  version=\"1.0\" encoding=\"utf-8\"?&gt;&lt;relativelayout&gt;\n\n&nbsp;&nbsp;&nbsp;&nbsp;&lt;imageview&gt;&lt;\/imageview&gt;&lt;\/relativelayout&gt;\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u73b0\u5728\u6211\u4eec\u53bbActivity\u4e2d\uff0c\u7528Glide\u52a0\u8f7d\u4e00\u5f20\u5706\u5f62\u56fe\u7247\u3002<\/p>\n<pre>class&nbsp;DemoActivity&nbsp;:&nbsp;AppCompatActivity()&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;private&nbsp;lateinit&nbsp;var&nbsp;demoBinding:&nbsp;ActivityDemoBinding&nbsp;&nbsp;&nbsp;&nbsp;\n&nbsp;&nbsp;&nbsp;&nbsp;\n&nbsp;&nbsp;&nbsp;&nbsp;override&nbsp;fun&nbsp;onCreate(savedInstanceState:&nbsp;Bundle?)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;super.onCreate(savedInstanceState)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;demoBinding&nbsp;=&nbsp;ActivityDemoBinding.inflate(layoutInflater)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;setContentView(demoBinding.root)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;lifecycleScope.launch(Dispatchers.Main)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;loadImage()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;&nbsp;&nbsp;private&nbsp;suspend&nbsp;fun&nbsp;loadImage()&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;withContext(Dispatchers.IO)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Glide.with(this@DemoActivity)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.load(R.drawable.ic_music)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.circleCrop()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.into(object&nbsp;:&nbsp;ImageViewTarget&lt;drawable&gt;(demoBinding.musicAvatar)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;override&nbsp;fun&nbsp;setResource(resource:&nbsp;Drawable?)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;demoBinding.musicAvatar.setImageDrawable(resource)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;})\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;}\n}\u590d\u5236\u4ee3\u7801&lt;\/drawable&gt;<\/pre>\n<p> 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<\/p>\n<p>\u8fd9\u6837\u6211\u4eec\u5229\u7528Glide\u5c31\u52a0\u8f7d\u4e86\u4e00\u4e2a\u5706\u5f62\u7684\u56fe\u7247\u3002<\/p>\n<h2>\u65cb\u8f6c\u56fe\u7247<\/h2>\n<p>\u56fe\u7247\u6709\u4e86\uff0c\u63a5\u4e0b\u6765\u5c31\u5e94\u8be5\u662f\u65cb\u8f6c\u4e86\u3002<\/p>\n<p>\u90a3\u4e48\u6211\u4eec\u5f00\u59cb\u641e\u65cb\u8f6c\u3002<\/p>\n<p>\u65cb\u8f6c\u662f\u5982\u4f55\u5b9e\u73b0\u7684\uff1f\u6211\u60f3\u4e0d\u7528\u6211\u591a\u8bf4\uff0c\u5f88\u591a\u5c0f\u4f19\u4f34\u90fd\u77e5\u9053\uff0c\u662f\u52a8\u753b\u561b\u3002<\/p>\n<p>\u6ca1\u9519\uff0c\u5c31\u662f\u52a8\u753b\u3002\u6211\u4eec\u8fd9\u91cc\u4f7f\u7528\u5c5e\u6027\u52a8\u753b\u6765\u5b9e\u73b0\u3002<\/p>\n<p>\u5b9a\u4e49\u4e00\u4e2a\u5c5e\u6027\u52a8\u753b\u5e76\u4e14\u7ed9\u56fe\u7247\u8bbe\u7f6e\u4e00\u4e2a\u70b9\u51fb\u4e8b\u4ef6\uff0c\u8ba9\u5b83\u65cb\u8f6c\u8d77\u6765<\/p>\n<pre>lateinit&nbsp;var&nbsp;rotateAnimator:&nbsp;ObjectAnimatoroverride&nbsp;fun&nbsp;onCreate(savedInstanceState:&nbsp;Bundle?)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;...\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;setContentView(demoBinding.root)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;rotateAnimator&nbsp;=&nbsp;ObjectAnimator.ofFloat(demoBinding.musicAvatar,&nbsp;View.ROTATION,&nbsp;0f,&nbsp;360f)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;rotateAnimator.duration&nbsp;=&nbsp;6000\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;rotateAnimator.repeatCount&nbsp;=&nbsp;-1\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;rotateAnimator.interpolator&nbsp;=&nbsp;LinearInterpolator()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;lifecycleScope.launch(Dispatchers.Main)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;loadImage()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u6dfb\u52a0\u70b9\u51fb\u4e8b\u4ef6\uff0c\u5e76\u4e14\u542f\u52a8\u52a8\u753b\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;demoBinding.musicAvatar.setOnClickListener&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;rotateAnimator.start()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u4e9b\u90fd\u662f\u5c0f\u513f\u79d1\u4e86\uff0c\u76f8\u4fe1\u9762\u5bf9\u7535\u89c6\u673a\u524d\u7684\u89c2\u4f17\u670b\u53cb\u4eec\uff0c\u554a\u4e0d\uff0c\u53e3\u8bef\u53e3\u8bef\u3002<\/p>\n<p>\u76f8\u4fe1\u5c0f\u4f19\u4f34\u4eec\u90fd\u5f88\u719f\u6089\u4e86\uff0c\u90a3\u6211\u4eec\u5f00\u59cb\u4eca\u5929\u7684\u91cd\u5934\u620f\uff0c\u8fd9\u4e2a\u7c92\u5b50\u52a8\u753b\u3002<\/p>\n<h2>\u7c92\u5b50\u52a8\u753b<\/h2>\n<p>\u5176\u5b9e\u6211\u5f88\u4e45\u4ee5\u524d\u770b\u7c92\u5b50\u52a8\u753b\u7684\u65f6\u5019\uff0c\u4e5f\u5f88\u597d\u5947\uff0c\u8fd9\u4e9b\u70ab\u9177\u7684\u7c92\u5b50\u52a8\u753b\u662f\u600e\u4e48\u5b9e\u73b0\u7684\uff0c\u5f53\u65f6\u7684\u6211\u5b8c\u5168\u6ca1\u6709\u601d\u8def\u3002<\/p>\n<p>\u5c24\u5176\u662f\u770b\u5230\u4e00\u4e9b\u56fe\u7247\uff0c\u556a\u5527\u4e00\u4e0b\u53d8\u6210\u4e86\u4e00\u5806\u7c92\u5b50\uff0c\u6389\u843d\uff0c\u7136\u540e\u53c8\u5471\u5527\u4ece\u7c92\u5b50\u53d8\u6210\u4e86\u56fe\u7247\uff0c\u5c31\u89c9\u5f97\u5f02\u5e38\u7684\u725bX\u3002<\/p>\n<p>\u5176\u5b9e\u554a\uff0c\u4e00\u70b9\u90fd\u4e0d\u795e\u5947\u3002<\/p>\n<p>\u9996\u5148\u6211\u4eec\u8981\u77e5\u9053bitmap\u662f\u4ec0\u4e48\u3002bitmap\u662f\u4ec0\u4e48\u5440\uff1f<\/p>\n<p>\u5728\u6570\u5b66\u4e0a\uff0c\u6709\u8fd9\u4e48\u51e0\u4e2a\u6982\u5ff5\uff0c\u70b9\uff0c\u7ebf\uff0c\u9762\u3002\u70b9\u5f88\u597d\u7406\u89e3\uff0c\u5c31\u662f\u4e00\u4e2a\u70b9\u3002\u7ebf\u662f\u7531\u4e00\u5806\u70b9\u7ec4\u6210\u7684\uff0c\u800c\u9762\u53c8\u7c7b\u4f3c\u4e8e\u4e00\u5806\u7ebf\u7ec4\u6210\u7684\u3002\u672c\u8d28\u4e0a\uff0c\u9762\u5c31\u662f\u7531\u65e0\u6570\u7684\u70b9\u7ec4\u6210\u7684\u3002<\/p>\n<p>\u53ef\u662f\u8fd9\u548cbitmap\u4ee5\u53ca\u4eca\u5929\u7684\u7c92\u5b50\u52a8\u753b\u6709\u4ec0\u4e48\u5173\u7cfb\u5462\uff1f<\/p>\n<p>\u4e00\u4e2abitmap\uff0c\u6211\u4eec\u53ef\u4ee5\u7b80\u5355\u5730\u7406\u89e3\u4e3a\u4e00\u5f20\u56fe\u7247\u3002\u8fd9\u4e2a\u56fe\u7247\u662f\u4e0d\u662f\u4e00\u4e2a\u5e73\u9762\u5462\uff1f\u800c\u5e73\u9762\u53c8\u662f\u4e00\u5806\u70b9\u7ec4\u6210\u7684\uff0c\u8fd9\u4e2a\u70b9\u5728\u8fd9\u91cc\u79f0\u4e3a\u50cf\u7d20\u70b9\u3002\u6240\u4ee5bitmap\u5c31\u662f\u7531\u4e00\u5806\u50cf\u7d20\u70b9\u6240\u7ec4\u6210\u7684\uff0c\u6709\u8da3\u7684\u662f\uff0c\u8fd9\u4e9b\u50cf\u7d20\u70b9\u662f\u6709\u989c\u8272\u7684\uff0c\u5f53\u8fd9\u4e9b\u50cf\u7d20\u70b9\u8db3\u591f\u5c0f\uff0c\u4f60\u79bb\u5f97\u8db3\u591f\u8fdc\u4f60\u770b\u8d77\u6765\u5c31\u50cf\u4e00\u5e45\u5b8c\u6574\u7684\u753b\u4e86\u3002<\/p>\n<p>\u5728\u73b0\u5b9e\u4e2d\u4e5f\u4e0d\u4e4f\u8fd9\u6837\u7684\u4f8b\u5b50\uff0c\u4e3e\u529e\u4e00\u4e9b\u6d3b\u52a8\u7684\u65f6\u5019\uff0c\u4e00\u4e2a\u4e2a\u4eba\u7a7f\u7740\u4e0d\u540c\u989c\u8272\u7684\u8863\u670d\u6709\u5e8f\u7684\u7ad9\u5728\u5e7f\u573a\u4e0a\uff0c\u5982\u679c\u6709\u4e00\u67b6\u65e0\u4eba\u673a\u5728\u7a7a\u4e2d\u770b\uff0c\u5c31\u80fd\u770b\u5230\u662f\u4e00\u5e45\u753b\u3002\u5c31\u50cf\u8fd9\u6837<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/0eca44bf65dbf09ee128d44f37e71a60-4.jpg\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe5\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe5\" \/><\/p>\n<p>\u6240\u4ee5\u5f53\u628a\u4e00\u5e45\u753b\u62c6\u6210\u4e00\u5806\u7c92\u5b50\u7684\u8bdd\uff0c\u5176\u5b9e\u5c31\u662f\u83b7\u5f97bitmap\u4e2d\u6240\u6709\u7684\u50cf\u7d20\u70b9\uff0c\u7136\u540e\u6539\u53d8\u4ed6\u4eec\u7684\u4f4d\u7f6e\u5c31\u53ef\u4ee5\u4e86\u3002\u5982\u679c\u60f3\u8981\u7528\u4e00\u5806\u7c92\u5b50\u62fc\u51d1\u51fa\u4e00\u5e45\u753b\uff0c\u53ea\u9700\u8981\u77e5\u9053\u8fd9\u4e9b\u7c92\u5b50\u7684\u987a\u5e8f\uff0c\u6392\u653e\u6574\u9f50\u81ea\u7136\u5c31\u662f\u4e00\u5e45\u753b\u4e86\u3002<\/p>\n<p>\u626f\u8fdc\u4e86\uff0c\u8bf4\u8fd9\u4e9b\u5462\u5176\u5b9e\u548c\u4eca\u5929\u7684\u6548\u679c\u6ca1\u6709\u7279\u522b\u5f3a\u7684\u8054\u7cfb\uff0c\u53ea\u662f\u4e3a\u4e86\u8ba9\u4f60\u80fd\u591f\u66f4\u597d\u7684\u7406\u89e3\u7c92\u5b50\u52a8\u753b\u7684\u672c\u8d28\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/6e57b5ff538cea64ea08a3cf5a9033d5-5.jpg\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe6\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe6\" \/><\/p>\n<h3>\u7c92\u5b50\u52a8\u753b\u5206\u6790<\/h3>\n<p>\u6211\u4eec\u5148\u89c2\u5bdf\u8fd9\u4e2a\u7279\u6548\uff0c\u4f60\u4f1a\u53d1\u73b0\u6709\u4e00\u4e2a\u5706\uff0c\u8fd9\u4e2a\u5706\u4e0a\u4e0d\u65ad\u7684\u5f80\u5916\u53d1\u6563\u7c92\u5b50\uff0c\u7c92\u5b50\u5728\u53d1\u6563\u7684\u8fc7\u7a0b\u4e2d\u901f\u5ea6\u662f\u4e0d\u76f8\u540c\u7684\u3002\u800c\u4e14\uff0c\u5728\u53d1\u6563\u7684\u8fc7\u7a0b\u4e2d\uff0c\u900f\u660e\u5ea6\u4e5f\u5728\u4e0d\u65ad\u53d8\u5316\uff0c\u76f4\u5230\u6700\u540e\u5b8c\u5168\u900f\u660e\u3002<\/p>\n<p>\u597d\uff0c\u6211\u4eec\u5f52\u7eb3\u4e00\u4e0b\u3002<\/p>\n<ul>\n<li>\u5706\u5f62\u751f\u4ea7\u7c92\u5b50<\/li>\n<li>\u7c92\u5b50\u901f\u5ea6\u4e0d\u540c\uff0c\u4e5f\u5c31\u662f\u968f\u673a\u3002<\/li>\n<li>\u7c92\u5b50\u900f\u660e\u5ea6\u4e0d\u65ad\u964d\u4f4e\uff0c\u76f4\u5230\u6700\u540e\u6d88\u6563\u3002<\/li>\n<li>\u7c92\u5b50\u6cbf\u7740\u5230\u5706\u5fc3\u7684\u53cd\u65b9\u5411\u6269\u6563\u3002<\/li>\n<\/ul>\n<p>\u5199\u81ea\u5b9a\u4e49View\u7684\u65f6\u5019\u5343\u4e07\u4e0d\u8981\u4e00\u4e0a\u6765\u5c31\u5f00\u5e72\uff0c\u800c\u662f\u8981\u9010\u6e10\u5206\u6790\uff0c\u6709\u7684\u65f6\u5019\u6211\u4eec\u9047\u5230\u4e00\u4e2a\u590d\u6742\u7684\u6548\u679c\uff0c\u66f4\u662f\u8981\u9010\u5e27\u7684\u5206\u6790\u3002<\/p>\n<p>\u800c\u4e14\u6211\u5199\u81ea\u5b9a\u4e49View\u7684\u65f6\u5019\u6709\u4e2a\u4e60\u60ef\uff0c\u5c31\u662f\u4e00\u70b9\u70b9\u7684\u5b9e\u73b0\u6548\u679c\uff0c\u4e0d\u4f1a\u53bb\u4e00\u6b21\u6027\u5b9e\u73b0\u5168\u90e8\u7684\u6548\u679c\u3002<\/p>\n<p>\u6240\u4ee5\u6211\u4eec\u7b2c\u4e00\u6b65\uff0c\u751f\u4ea7\u7c92\u5b50\u3002<\/p>\n<h3>\u751f\u4ea7\u7c92\u5b50<\/h3>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u53ef\u4ee5\u77e5\u9053\uff0c\u7c92\u5b50\u662f\u6709\u989c\u8272\u7684\uff0c\u4f46\u662f\u4f3c\u4e4e\u8fd9\u4e2a\u6548\u679c\u7c92\u5b50\u53ea\u6709\u767d\u8272\uff0c\u90a3\u5c31\u6307\u5b9a\u7c92\u5b50\u989c\u8272\u4e3a\u767d\u8272\u4e86\u3002<\/p>\n<p>\u7136\u540e\u6211\u4eec\u53ef\u4ee5\u5f97\u51fa\uff0c\u7c92\u5b50\u662f\u6709\u4f4d\u7f6e\u7684\uff0c\u4f4d\u7f6e\u80af\u5b9a\u7531x\uff0cy\u7ec4\u6210\u561b\u3002\u7136\u540e\u7c92\u5b50\u8fd8\u6709\u4e2a\u901f\u5ea6\uff0c\u4ee5\u53ca\u900f\u660e\u5ea6\u548c\u534a\u5f84\u3002<\/p>\n<h4>\u5b9a\u4e49\u7c92\u5b50<\/h4>\n<p>\u6211\u4eec\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u7c92\u5b50\u7c7b\uff1a<\/p>\n<pre>class&nbsp;Particle(&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;x:Float,\/\/X\u5750\u6807\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;y:Float,\/\/Y\u5750\u6807\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;radius:Float,\/\/\u534a\u5f84\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;speed:Float,\/\/\u901f\u5ea6\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;alpha:&nbsp;Int\/\/\u900f\u660e\u5ea6)\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u7531\u4e8e\u6211\u4eec\u7684\u8fd9\u4e2a\u6548\u679c\u770b\u8d77\u6765\u5c31\u50cf\u662f\u6c34\u6ce2\u4e00\u6837\u7684\u6d9f\u6f2a\uff0c\u6211\u7ed9\u81ea\u5b9a\u4e49View\u8d77\u540d\u4e3a\u6d9f\u6f2a\uff0c\u4e5f\u5c31\u662fdimple<\/p>\n<p>\u6211\u4eec\u6765\u5b9a\u4e49\u8fd9\u4e2a\u81ea\u5b9a\u4e49View\u628a<\/p>\n<h4>\u5b9a\u4e49\u81ea\u5b9a\u4e49view<\/h4>\n<pre>class&nbsp;DimpleView(context:&nbsp;Context?,&nbsp;attrs:&nbsp;AttributeSet?)&nbsp;:&nbsp;View(context,&nbsp;attrs)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u5b9a\u4e49\u4e00\u4e2a\u7c92\u5b50\u7684\u96c6\u5408&nbsp;&nbsp;\n&nbsp;&nbsp;&nbsp;&nbsp;private&nbsp;var&nbsp;particleList&nbsp;=&nbsp;mutableListOf&lt;particle&gt;()&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u5b9a\u4e49\u753b\u7b14\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;paint&nbsp;=&nbsp;Paint()\n}\u590d\u5236\u4ee3\u7801&lt;\/particle&gt;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4e00\u5f00\u59cb\u5c31\u76f4\u63a5\u5706\u5f62\u751f\u4ea7\u7c92\u5b50\u7740\u5b9e\u6709\u4e9b\u96be\u5ea6\uff0c\u6211\u5148\u8003\u8651\u8003\u8651\u5982\u4f55\u5b9e\u73b0\u751f\u4ea7\u7c92\u5b50\u628a\u3002<\/p>\n<p>\u5148\u4e0d\u65ad\u751f\u4ea7\u7c92\u5b50\uff0c\u7136\u540e\u518d\u8003\u8651\u5706\u5f62\u7684\u4e8b\u60c5\u3002<\/p>\n<p>\u800c\u4e14\u751f\u4ea7\u4e00\u5806\u7c92\u5b50\u6bd4\u8f83\u9ebb\u70e6\uff0c\u6211\u5148\u5b9e\u73b0\u4ece\u4e0a\u5230\u4e0b\u751f\u4ea7\u4e00\u4e2a\u7c92\u5b50\u3002<\/p>\n<p>\u90a3\u4e48\u5982\u4f55\u751f\u4ea7\u4e00\u4e2a\u7c92\u5b50\u5462\uff1f\u524d\u9762\u4e5f\u8bf4\u4e86\uff0c\u7c92\u5b50\u5c31\u662f\u4e2a\u5f88\u5c0f\u7684\u70b9\uff0c\u6240\u4ee5\u7528canvas\u7684drawCircle\u5c31\u53ef\u4ee5\u3002<\/p>\n<p>\u90a3\u6211\u4eec\u6765\u5427<\/p>\n<pre>override&nbsp;fun&nbsp;onDraw(canvas:&nbsp;Canvas)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;super.onDraw(canvas)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;paint.color&nbsp;=&nbsp;Color.WHITE\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;paint.isAntiAlias&nbsp;=&nbsp;true\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;particle=Particle(0f,0f,2f,2f,100)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;canvas.drawCircle(particle.x,&nbsp;particle.y,&nbsp;particle.radius,&nbsp;paint)\n}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u753b\u753b\u561b\uff0c\u5c31\u8981\u5728onDraw\u65b9\u6cd5\u4e2d\u8fdb\u884c\u4e86\u3002\u6211\u4eec\u5148new\u4e00\u4e2aParticle\uff0c\u7136\u540e\u753b\u51fa\u6765\u3002<\/p>\n<p>\u5b9e\u9645\u4e0a\u8fd9\u6837\u5e76\u6ca1\u6709\u4ec0\u4e48\u6548\u679c\u3002\u4e3a\u5565\u5462\uff1f<\/p>\n<p>\u6211\u4eec\u7684\u80cc\u666f\u662f\u767d\u8272\u7684\uff0c\u7c92\u5b50\u9ed8\u8ba4\u662f\u767d\u8272\u7684\uff0c\u4f60\u5f53\u7136\u770b\u4e0d\u5230\u4e86\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u5148\u505a\u4e2a\u6d4b\u8bd5\uff0c\u4e3a\u4e86\u80fd\u770b\u51fa\u6548\u679c\u3002\u8fd9\u91cc\u554a\uff0c\u6211\u4eec\u628a\u80cc\u666f\u6362\u6210\u9ed1\u8272\u3002\u540c\u65f6\uff0c\u4e3a\u4e86\u65b9\u4fbf\u6d4b\u8bd5\uff0c\u5148\u628aImageview\u8bbe\u7f6e\u6210\u4e0d\u53ef\u89c1\u3002\u7136\u540e\u6211\u4eec\u770b\u4e0b\u6548\u679c<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/6e57b5ff538cea64ea08a3cf5a9033d5-6.png\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe7\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe7\" \/><\/p>\n<p>\u6ca1\u9519\uff0c\u5c31\u662f\u6ca1\u4ec0\u4e48\u6548\u679c\u3002\u4f60\u4ec0\u4e48\u90fd\u770b\u4e0d\u51fa\u6765\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/6e57b5ff538cea64ea08a3cf5a9033d5-7.jpg\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe8\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe8\" \/><\/p>\n<p>\u5148\u4e0d\u6025\uff0c\u6162\u6162\u6765\uff0c\u4e14\u542c\u6211\u5439\uff0c\u554a\u4e0d\uff0c\u4e14\u542c\u6211\u548c\u4f60\u6162\u6162\u9053\u6765\u3002<\/p>\n<p>\u6211\u4eec\u5728\u8fd9\u91cc\u53ea\u82b1\u4e86\u4e00\u4e2a\u5706\uff0c\u800c\u4e14\u662f\u5728\u5750\u6807\u539f\u70b9\u753b\u4e86\u4e00\u4e2a\u534a\u5f84\u4e3a2\u7684\u70b9\uff0c\u53ef\u4ee5\u8bf4\u5f88\u5c0f\u5f88\u5c0f\u4e86\u3002\u81ea\u7136\u5c31\u770b\u4e0d\u5230\u4e86\u3002<\/p>\n<p>\u4ec0\u4e48\uff0c\u4f60\u4e0d\u77e5\u9053\u539f\u70b9\u5728\u54ea\uff1f<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/6e57b5ff538cea64ea08a3cf5a9033d5-8.jpg\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe9\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe9\" \/><\/p>\n<p>\u68d5\u8272\u90e8\u5206\u5c31\u662f\u6211\u4eec\u7684\u5c4f\u5e55\uff0c\u6240\u4ee5\u539f\u70b9\u5c31\u662f\u5de6\u4e0a\u89d2\u3002<\/p>\n<p>\u73b0\u5728\u6211\u4eec\u9700\u8981\u505a\u7684\u4e8b\u60c5\u53ea\u6709\u4e24\u4e2a\uff0c\u8981\u4e48\u628a\u70b9\u53d8\u5927\uff0c\u8981\u4e48\u6539\u53d8\u70b9\u7684\u4f4d\u7f6e\u3002<\/p>\n<p>\u7c92\u5b50\u7c92\u5b50\u7684\uff0c\u5f53\u7136\u4e0d\u80fd\u53d8\u5927\uff0c\u6240\u4ee5\u6211\u4eec\u628a\u5b83\u653e\u5230\u5c4f\u5e55\u4e2d\u5fc3\u53bb\u3002<\/p>\n<p>\u6240\u4ee5\u6211\u4eec\u5b9a\u4e49\u4e00\u4e2a\u5c4f\u5e55\u4e2d\u5fc3\u7684\u5750\u6807\uff0ccenterX,centerY\u3002\u5e76\u4e14\u5728onSizeChanged\u65b9\u6cd5\u4e2d\u7ed9\u5b83\u4eec\u8d4b\u503c<\/p>\n<pre>override&nbsp;fun&nbsp;onSizeChanged(w:&nbsp;Int,&nbsp;h:&nbsp;Int,&nbsp;oldw:&nbsp;Int,&nbsp;oldh:&nbsp;Int)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;super.onSizeChanged(w,&nbsp;h,&nbsp;oldw,&nbsp;oldh)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;centerX=&nbsp;(w\/2).toFloat()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;centerY=&nbsp;(h\/2).toFloat()\n}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u90a3\u6211\u4eec\u6539\u4e00\u4e0b\u4e0a\u9762\u7684\u753b\u70b9\u7684\u4ee3\u7801\uff1a<\/p>\n<pre>override&nbsp;fun&nbsp;onDraw(canvas:&nbsp;Canvas)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;...&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;particle=Particle(centerX,centerY,2f,2f,100)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;canvas.drawCircle(particle.x,&nbsp;particle.y,&nbsp;particle.radius,&nbsp;paint)\n}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5982\u6b64\uff0c\u53ef\u4ee5\u770b\u5230\u8fd9\u4e2a\u70b9\u4e86\uff0c\u867d\u7136\u5f88\u5c0f\u5f88\u5c0f\uff0c\u4f46\u662f\u4e5f\u80dc\u8fc7\u6ca1\u6709\u5440<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/6e57b5ff538cea64ea08a3cf5a9033d5-9.png\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe10\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe10\" \/><\/p>\n<p>\u53ef\u662f\u8fd9\u65f6\u5019\u6709\u4eba\u8df3\u51fa\u6765\u4e86\uff0c\u8bf4\u4f60\u8fd9\u4e0d\u5bf9\u554a\uff0c\u4e00\u4e2a\u70b9\u6709\u5565\u7528\uff1f\u8fd8\u90a3\u4e48\u5c0f\uff0c\u6211\u672c\u6765\u5c31\u8fd1\u89c6\uff0c\u4f60\u8fd9\u641e\u5f97\u6211\u66f4\u770b\u4e0d\u6e05\u4e86\u3002\u4f60\u662f\u4e0d\u662f\u773c\u775b\u5e97\u6d3e\u6765\u7684\u53db\u5f92\uff01<\/p>\n<h5>\u6dfb\u52a0\u591a\u4e2a\u7c92\u5b50<\/h5>\n<p>\u90a3\u597d\u5427\uff0c\u6211\u4eec\u591a\u52a0\u51e0\u4e2a\u3002\u53ef\u662f\u8be5\u600e\u4e48\u52a0\uff1f\u6548\u679c\u56fe\u4e2d\u662f\u5706\u5f62\u7684\uff0c\u53ef\u662f\u6211\u4e0d\u4f1a\u554a\uff0c\u6211\u53ea\u80fd\u5148\u8bd5\u8bd5\u4e00\u6a2a\u6392\u6dfb\u52a0\u3002\u770b\u770b\u8fd9\u6837\u53ef\u4e0d\u53ef\u4ee5\u5462\uff1f\u6211\u4eec\u77e5\u9053\uff0c\u6a2a\u6392\u7684\u8bdd\u5c31\u662fy\u503c\u4e0d\u53d8\uff0cx\u53d8\u3002\u597d\uff0c\u4f46\u662f\u4e3a\u4e86\u907f\u514d\u6211\u4eec\u753b\u51fa\u4e00\u6761\u7ebf\uff0c\u6211\u4eecx\u503c\u968f\u673a\u589e\u52a0\uff0c\u8fd9\u6837\u7684\u8bdd\u770b\u8d77\u6765\u4e5f\u6bd4\u8f83\u4e0d\u89c4\u5219\u4e00\u4e9b\u3002<\/p>\n<p>\u90a3\u4e48\u4ee3\u7801\u5c31\u5e94\u8be5\u662f\u8fd9\u6837\u4e86<\/p>\n<pre>override&nbsp;fun&nbsp;onDraw(canvas:&nbsp;Canvas)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;super.onDraw(canvas)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;paint.color&nbsp;=&nbsp;Color.WHITE\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;paint.isAntiAlias&nbsp;=&nbsp;true\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(i&nbsp;in&nbsp;0..50){&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;random=&nbsp;Random()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;nextX=random.nextInt((centerX*2).toInt())&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;particle=Particle(nextX.toFloat(),centerY,2f,2f,100)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;canvas.drawCircle(particle.x,&nbsp;particle.y,&nbsp;particle.radius,&nbsp;paint)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n\n}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u7531\u4e8ecenterX\u662f\u5c4f\u5e55\u7684\u4e2d\u5fc3\uff0c\u6240\u4ee5\u5b83\u7684\u503c\u662f\u5c4f\u5e55\u5bbd\u5ea6\u7684\u4e00\u534a\uff0c\u8fd9\u91cc\u7684\u8bddX\u7684\u503c\u5c31\u662f\u5728\u5c4f\u5e55\u5bbd\u5ea6\u5185\u968f\u673a\u9009\u4e00\u4e2a\u503c\u3002\u90a3\u4e48\u6548\u679c\u770b\u8d77\u6765\u662f\u4e0b\u9762\u8fd9\u6837<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/6e57b5ff538cea64ea08a3cf5a9033d5-10.png\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe11\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe11\" \/><\/p>\n<p>\u6548\u679c\u770b\u8d77\u6765\u4e0d\u9519\u4e86\u3002<\/p>\n<p>\u4f46\u662f\u603b\u6709\u7231\u641e\u4e8b\u7684\u5c0f\u4f19\u4f34\u53c8\u8df3\u51fa\u6765\u4e86\uff0c\u8bf4\u4f60\u4f1a\u4e0d\u4f1a\u5199\u4ee3\u7801\uff1fonDraw\u65b9\u6cd5\u4e00\u76f4\u88ab\u8c03\u7528\uff0c\u4e0d\u80fd\u5b9a\u4e49\u5bf9\u8c61\u4f60\u4e0d\u77e5\u9053\u4e48\uff1f\u5f88\u5bb9\u6613\u5f15\u53d1\u9891\u7e41\u7684GC\uff0c\u9020\u6210\u5185\u5b58\u6296\u52a8\u7684\u3002\u800c\u4e14\u4f60\u8fd9\u8fd8\u641e\u4e2a\u5faa\u73af\uff0c\u6027\u80fd\u80fd\u884c\u4e0d\uff1f<\/p>\n<p>\u8fd9\u4e2a\u5c0f\u4f19\u4f34\u4f60\u8bf4\u7684\u975e\u5e38\u5bf9\uff0c\u662f\u6211\u9519\u4e86\uff01<\/p>\n<p>\u786e\u5b9e\uff0c\u5728ondraw\u65b9\u6cd5\u4e2d\u4e0d\u9002\u5408\u5b9a\u4e49\u5bf9\u8c61\uff0c\u5c24\u5176\u662ffor\u5faa\u73af\u4e2d\u5c31\u66f4\u4e0d\u80fd\u4e86\u3002\u6bb5\u65f6\u95f4\u770b\uff0c\u6211\u4eec50\u4e2a\u7c92\u5b50\u597d\u50cf\u5bf9\u6027\u80fd\u7684\u5f00\u9500\u4e0d\u662f\u5f88\u5927\uff0c\u4f46\u662f\u4e00\u65e6\u7c92\u5b50\u6570\u91cf\u5f88\u591a\uff0c\u6027\u80fd\u5f00\u9500\u5c31\u4f1a\u5341\u5206\u7684\u5927\u3002\u800c\u4e14\uff0c\u4e3a\u4e86\u4e0d\u6389\u5e27\uff0c\u6211\u4eec\u9700\u8981\u572816ms\u4e4b\u5185\u5b8c\u6210\u7ed8\u5236\u3002\u8fd9\u4e2a\u4e0d\u660e\u767d\u7684\u8bdd\u6211\u540e\u7eed\u4f1a\u6709\u6027\u80fd\u4f18\u5316\u7684\u4e13\u9898\uff0c\u53ef\u4ee5\u5173\u6ce8\u4e00\u4e0b\u6211~<\/p>\n<p>\u8fd9\u91cc\u6211\u4eec\u6d4b\u91cf\u4e00\u4e0b50\u4e2a\u7c92\u5b50\u7684\u7ed8\u5236\u65f6\u95f4\u548c5000\u4e2a\u7c92\u5b50\u7684\u7ed8\u5236\u65f6\u95f4\u3002<\/p>\n<pre>override&nbsp;fun&nbsp;onDraw(canvas:&nbsp;Canvas)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;super.onDraw(canvas)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;paint.color&nbsp;=&nbsp;Color.WHITE\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;paint.isAntiAlias&nbsp;=&nbsp;true\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;time=&nbsp;measureTimeMillis&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(i&nbsp;in&nbsp;0..50){&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;random=&nbsp;Random()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;nextX=random.nextInt((centerX*2).toInt())&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;particle=Particle(nextX.toFloat(),centerY,2f,2f,100)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;canvas.drawCircle(particle.x,&nbsp;particle.y,&nbsp;particle.radius,&nbsp;paint)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Log.i(\"dimple\",\"\u7ed8\u5236\u65f6\u95f4$time&nbsp;ms\")\n}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u7ed3\u679c\u5982\u4e0b\uff1a50\u4e2a\u7c92\u5b50\u7684\u7ed8\u5236\u65f6\u95f4<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/6e57b5ff538cea64ea08a3cf5a9033d5-11.png\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe12\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe12\" \/><\/p>\n<p>5000\u4e2a\u7c92\u5b50\u7684\u7ed8\u5236\u65f6\u95f4\uff1a<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/1e598901cbe5384d5440a89bc761e82c-12.png\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe13\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe13\" \/><\/p>\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u660e\u663e\u8d85\u4e8616ms\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u4f18\u5316\uff0c\u600e\u4e48\u4f18\u5316\uff1f\u5f88\u7b80\u5355\uff0c\u5c31\u662f\u4e0d\u5728ondraw\u65b9\u6cd5\u4e2d\u521b\u5efa\u5bf9\u8c61\u5c31\u597d\u4e86\uff0c\u90a3\u6211\u4eec\u9009\u62e9\u5728\u54ea\u91cc\u5462\uff1f<\/p>\n<p>\u6784\u9020\u65b9\u6cd5\u53ef\u4ee5\u5417\uff1f\u597d\u50cf\u4e0d\u53ef\u4ee5\u5462\uff0c\u8fd9\u4e2a\u65f6\u5019\u8fd8\u6ca1\u529e\u6cd5\u83b7\u5f97\u5c4f\u5e55\u5bbd\u9ad8\uff0c\u563f\u563f\u563f\uff0conSizeChanged\u65b9\u6cd5\u5c31\u51b3\u5b9a\u662f\u4f60\u4e86\uff01<\/p>\n<h5>\u7c92\u5b50\u6dfb\u52a0\u5230\u96c6\u5408\u4e2d<\/h5>\n<pre>override&nbsp;fun&nbsp;onSizeChanged(w:&nbsp;Int,&nbsp;h:&nbsp;Int,&nbsp;oldw:&nbsp;Int,&nbsp;oldh:&nbsp;Int)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;super.onSizeChanged(w,&nbsp;h,&nbsp;oldw,&nbsp;oldh)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;centerX=&nbsp;(w\/2).toFloat()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;centerY=&nbsp;(h\/2).toFloat()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;val&nbsp;random=&nbsp;Random()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;nextX=0\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(i&nbsp;in&nbsp;0..5000){\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;nextX=random.nextInt((centerX*2).toInt())\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particleList.add(Particle(nextX.toFloat(),centerY,2f,2f,100))\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6211\u4eec\u518d\u6765\u770b\u770bonDraw\u65b9\u6cd5\u4e2d\u7ed8\u5236\u65f6\u95f4\u662f\u591a\u5c11\uff1a<\/p>\n<pre>override&nbsp;fun&nbsp;onDraw(canvas:&nbsp;Canvas)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;super.onDraw(canvas)\n&nbsp;&nbsp;&nbsp;&nbsp;paint.color&nbsp;=&nbsp;Color.WHITE\n&nbsp;&nbsp;&nbsp;&nbsp;paint.isAntiAlias&nbsp;=&nbsp;true\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;time=&nbsp;measureTimeMillis&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particleList.forEach&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;canvas.drawCircle(it.x,it.y,it.radius,paint)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;Log.i(\"dimple\",\"\u7ed8\u5236\u65f6\u95f4$time&nbsp;ms\")\n}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/1e598901cbe5384d5440a89bc761e82c-13.png\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe14\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe14\" \/><\/p>\n<p>emmmm,\u597d\u50cf\u662f\u4f4e\u4e8e16ms\u4e86\uff0c\u53ef\u662f\u8fd9\u4e5f\u592a\u5371\u9669\u4e86\u5427\uff0c\u4f60\u8fd9\u5206\u5206\u949f\u5c31\u8d85\u8fc7\u4e8616ms\u554a\u3002<\/p>\n<p>\u786e\u5b9e\u662f\u8fd9\u6837\u5b50\uff0c\u4f46\u662f\u5b9e\u9645\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u5e76\u4e0d\u9700\u89815000\u4e2a\u8fd9\u4e48\u591a\u7684\u7c92\u5b50\u3002\u53c8\u6709\u4eba\u95ee\uff0c\uff0c\u4e07\u4e00\u771f\u7684\u9700\u8981\u600e\u4e48\u529e\uff1f\u90a3\u5c31\u5f97\u770bsurfaceView\u4e86\u3002\u8fd9\u91cc\u5c31\u4e0d\u8bb2\u4e86<\/p>\n<p>\u6211\u4eec\u8fd8\u662f\u56de\u8fc7\u5934\u6765\uff0c\u5148\u628a\u7c92\u5b50\u6570\u91cf\u53d8\u621050\u4e2a\u3002<\/p>\n<p>\u73b0\u5728\u7c92\u5b50\u4e5f\u6709\u4e86\uff0c\u8be5\u5b9e\u73b0\u52a8\u8d77\u6765\u7684\u6548\u679c\u4e86\u3002<\/p>\n<p>\u52a8\u8d77\u6765\uff0c\u6211\u4eec\u60f3\u60f3\uff0c\u5e94\u8be5\u600e\u4e48\u505a\u5462\uff1f\u6548\u679c\u56fe\u662f\u7c7b\u4f3c\u5706\u4e00\u6837\u7684\u6269\u6563\uff0c\u6211\u73b0\u5728\u505a\u4e0d\u5230\uff0c\u6211\u5f80\u4e0b\u6389\u8fd9\u5e94\u8be5\u4e0d\u96be\u5427\uff1f<\/p>\n<p>\u8bf4\u52a8\u5c31\u52a8\uff0c\u641e\u8d77\uff01\u81f3\u4e8e\u600e\u4e48\u52a8\uff0c\u90a3\u80af\u5b9a\u662f\u5c5e\u6027\u52a8\u753b\u5440\u3002<\/p>\n<h3>\u5b9a\u4e49\u52a8\u753b<\/h3>\n<pre>private&nbsp;var&nbsp;animator&nbsp;=&nbsp;ValueAnimator.ofFloat(0f,&nbsp;1f)init&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;animator.duration&nbsp;=&nbsp;2000\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;animator.repeatCount&nbsp;=&nbsp;-1\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;animator.interpolator&nbsp;=&nbsp;LinearInterpolator()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;animator.addUpdateListener&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;updateParticle(it.animatedValue&nbsp;as&nbsp;Float)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;invalidate()\/\/\u91cd\u7ed8\u754c\u9762\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6211\u5728\u8fd9\u91cc\u554a\uff0c\u5b9a\u4e49\u4e86\u4e00\u4e2a\u65b9\u6cd5updateParticle\uff0c\u6bcf\u6b21\u52a8\u753b\u66f4\u65b0\u7684\u65f6\u5019\u554a\u5c31\u53bb\u66f4\u65b0\u7c92\u5b50\u7684\u72b6\u6001\u3002<\/p>\n<p>updateParticle\u65b9\u6cd5\u5e94\u8be5\u53bb\u505a\u4ec0\u4e48\u4e8b\u60c5\u5462\uff1f\u6211\u4eec\u6765\u5f00\u52a8\u5c0f\u8111\u7b4b\u60f3\u60f3\u3002<\/p>\n<p>\u5982\u679c\u8bf4\u662f\u7c92\u5b50\u4e0d\u65ad\u5f80\u4e0b\u6389\u7684\u8bdd\uff0c\u90a3\u5e94\u8be5\u662fy\u503c\u4e0d\u65ad\u5730\u589e\u52a0\u5c31\u53ef\u4ee5\u4e86\uff0c\u55ef\uff0c\u975e\u5e38\u6709\u9053\u7406\u3002<\/p>\n<p>\u6211\u4eec\u6765\u5b9e\u73b0\u4e00\u4e0b\u8fd9\u4e2a\u65b9\u6cd5<\/p>\n<h4>\u66f4\u65b0\u7c92\u5b50\u4f4d\u7f6e<\/h4>\n<pre>private&nbsp;fun&nbsp;updateParticle(value:&nbsp;Float)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;particleList.forEach&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;it.y&nbsp;+=&nbsp;it.speed\n&nbsp;&nbsp;&nbsp;&nbsp;}\n}override&nbsp;fun&nbsp;onSizeChanged(w:&nbsp;Int,&nbsp;h:&nbsp;Int,&nbsp;oldw:&nbsp;Int,&nbsp;oldh:&nbsp;Int)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;...\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;animator.start()\/\/\u522b\u5fd8\u4e86\u542f\u52a8\u52a8\u753b\n&nbsp;&nbsp;&nbsp;&nbsp;}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u90a3\u6211\u4eec\u73b0\u5728\u6765\u770b\u4e00\u4e0b\u6548\u679c\u5982\u4f55<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/42e176ae33cef93a4db324e28a28ed1d-14.gif\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe15\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe15\" \/><\/p>\n<p>emmmm\u770b\u8d77\u6765\u6709\u70b9\u96cf\u5f62\u4e86\uff0c\u4e0d\u8fc7\u6548\u679c\u56fe\u91cc\u7684\u7c92\u5b50\u901f\u5ea6\u4f3c\u4e4e\u662f\u968f\u673a\u7684\uff0c\u54b1\u4eec\u8fd9\u91cc\u662f\u540c\u6b65\u7684\u5440\u3002<\/p>\n<p>\u6ca1\u5173\u7cfb\uff0c\u6211\u4eec\u53ef\u4ee5\u8ba9\u7c92\u5b50\u7684\u901f\u5ea6\u53d8\u6210\u968f\u673a\u7684\u901f\u5ea6\u3002\u6211\u4eec\u4fee\u6539\u6dfb\u52a0\u7c92\u5b50\u8fd9\u91cc\u7684\u4ee3\u7801<\/p>\n<pre>override&nbsp;fun&nbsp;onSizeChanged(w:&nbsp;Int,&nbsp;h:&nbsp;Int,&nbsp;oldw:&nbsp;Int,&nbsp;oldh:&nbsp;Int)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;super.onSizeChanged(w,&nbsp;h,&nbsp;oldw,&nbsp;oldh)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;centerX&nbsp;=&nbsp;(w&nbsp;\/&nbsp;2).toFloat()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;centerY&nbsp;=&nbsp;(h&nbsp;\/&nbsp;2).toFloat()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;val&nbsp;random&nbsp;=&nbsp;Random()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;nextX&nbsp;=&nbsp;0\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;speed=0&nbsp;\/\/\u5b9a\u4e49\u4e00\u4e2a\u901f\u5ea6\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(i&nbsp;in&nbsp;0..50)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;nextX&nbsp;=&nbsp;random.nextInt((centerX&nbsp;*&nbsp;2).toInt())\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;speed=&nbsp;random.nextInt(10)+5&nbsp;\/\/\u901f\u5ea6\u4ece5-15\u4e0d\u7b49\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particleList.add(\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Particle(nextX.toFloat(),&nbsp;centerY,&nbsp;2f,&nbsp;speed.toFloat(),&nbsp;100)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;animator.start()\n&nbsp;&nbsp;&nbsp;&nbsp;}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u662f\u6548\u679c\uff0c\u770b\u8d77\u6765\u6709\u70b9\u6837\u5b50\u4e86\u3002\u4e0d\u8fc7\u95ee\u9898\u53c8\u6765\u4e86\uff0c\u4eba\u5bb6\u7684\u7c92\u5b50\u662f\u4e00\u76f4\u6563\u53d1\u7684\uff0c\u4f60\u8fd9\u4e2a\u7c92\u5b50\u600e\u4e48\u6ca1\u4e86\u5c31\u662f\u6ca1\u4e86\u5462\uff1f<img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/42e176ae33cef93a4db324e28a28ed1d-15.gif\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe16\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe16\" \/>\u6709\u9053\u7406\uff0c\u6240\u4ee5\u6211\u89c9\u5f97\u6211\u4eec\u9700\u8981\u8bbe\u7f6e\u4e00\u4e2a\u7c92\u5b50\u79fb\u52a8\u7684\u6700\u5927\u8ddd\u79bb\uff0c\u4e00\u65e6\u8d85\u51fa\u8fd9\u4e2a\u6700\u5927\u8ddd\u79bb\uff0c\u6211\u4eec\u554a\u5c31\u8ba9\u5b83\u56de\u5230\u521d\u59cb\u7684\u4f4d\u7f6e\u3002<\/p>\n<h4>\u4fee\u6539\u7c92\u5b50\u7684\u5b9a\u4e49<\/h4>\n<pre>class&nbsp;Particle(&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;x:Float,\/\/X\u5750\u6807\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;y:Float,\/\/Y\u5750\u6807\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;radius:Float,\/\/\u534a\u5f84\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;speed:Float,\/\/\u901f\u5ea6\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;alpha:&nbsp;Int,&nbsp;\/\/\u900f\u660e\u5ea6\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;maxOffset:Float=300f\/\/\u6700\u5927\u79fb\u52a8\u8ddd\u79bb)\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5982\u4e0a\uff0c\u6211\u4eec\u6dfb\u52a0\u4e86\u4e00\u4e2a\u6700\u5927\u79fb\u52a8\u8ddd\u79bb\u3002\u4f46\u662f\u6709\u65f6\u5019\u6211\u4eec\u5f80\u5f80\u6700\u5927\u79fb\u52a8\u8ddd\u79bb\u90fd\u662f\u56fa\u5b9a\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u8fd9\u91cc\u7ed9\u8bbe\u7f6e\u4e86\u4e00\u4e2a\u9ed8\u8ba4\u503c\uff0c\u5982\u679c\u54ea\u4e2a\u7c92\u5b50\u60f3\u7279\u7acb\u72ec\u884c\u4e5f\u4e0d\u662f\u4e0d\u53ef\u4ee5\u3002<\/p>\n<p>\u6709\u4e86\u6700\u5927\u7684\u79fb\u52a8\u8ddd\u79bb\uff0c\u6211\u4eec\u5c31\u5f97\u5224\u5b9a\uff0c\u4e00\u65e6\u79fb\u52a8\u7684\u8ddd\u79bb\u8d85\u8fc7\u4e86\u8fd9\u4e2a\u503c\uff0c\u6211\u4eec\u5c31\u8ba9\u5b83\u56de\u5230\u8d77\u70b9\u3002\u8fd9\u4e2a\u5224\u5b9a\u5728\u54ea\u91cc\u505a\u5462\uff1f\u5f53\u7136\u662f\u5728\u66f4\u65b0\u4f4d\u7f6e\u7684\u5730\u65b9\u5566<\/p>\n<h4>\u7c92\u5b50\u8fd0\u52a8\u8ddd\u79bb\u5224\u5b9a<\/h4>\n<pre>private&nbsp;fun&nbsp;updateParticle(value:&nbsp;Float)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particleList.forEach&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if(it.y&nbsp;-&nbsp;centerY&nbsp;&amp;gt;it.maxOffset){\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;it.y=centerY&nbsp;\/\/\u91cd\u65b0\u8bbe\u7f6eY\u503c\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;it.x&nbsp;=&nbsp;random.nextInt((centerX&nbsp;*&nbsp;2).toInt()).toFloat()&nbsp;\/\/\u968f\u673a\u8bbe\u7f6eX\u503c\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;it.speed=&nbsp;(random.nextInt(10)+5).toFloat()&nbsp;\/\/\u968f\u673a\u8bbe\u7f6e\u901f\u5ea6\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;it.y&nbsp;+=&nbsp;it.speed\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u672c\u6765\u5440\uff0c\u6211\u60f3\u6162\u6162\u6765\uff0c\u5148\u968f\u673aY\uff0c\u5728\u968f\u673aX\u548c\u901f\u5ea6\u3002<\/p>\n<p>\u4f46\u662f\u6211\u89c9\u5f97\u53ef\u4ee5\u653e\u5728\u4e00\u8d77\u8bb2\uff0c\u56e0\u4e3a\u4e00\u4e2a\u7c92\u5b50\u4e00\u65e6\u8d85\u51fa\u8fd9\u4e2a\u6700\u5927\u8ddd\u79bb\uff0c\u90a3\u4e48\u5b83\u5c31\u76f8\u5f53\u4e8e\u88ab\u56de\u6536\u91cd\u65b0\u751f\u6210\u4e00\u4e2a\u65b0\u7684\u7c92\u5b50\u4e86\uff0c\u800c\u4e00\u4e2a\u65b0\u7684\u7c92\u5b50\uff0c\u5fc5\u7136X\uff0cY\uff0c\u901f\u5ea6\u90fd\u662f\u91cd\u65b0\u751f\u6210\u7684\uff0c\u8fd9\u6837\u624d\u80fd\u770b\u8d77\u6765\u6548\u679c\u4e0d\u9519\u3002<\/p>\n<p>\u90a3\u6211\u4eec\u8fd0\u884c\u8d77\u6765\u770b\u770b\u6548\u679c\u628a\u3002<img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/c68c075a2e2de980b22b3ff1f8395517-16.gif\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe17\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe17\" \/><\/p>\n<p>emmm\u4f3c\u4e4e\u8fd8\u4e0d\u9519\u7684\u6837\u5b50\uff1f\u4e0d\u8fc7\u4eba\u5bb6\u7684\u7c92\u5b50\u770b\u8d77\u6765\u5f88\u591a\u5440\uff0c\u6ca1\u5173\u7cfb\uff0c\u6211\u4eec\u8fd9\u91cc\u8bbe\u7f6e\u6210300\u4e2a\u7c92\u5b50\u518d\u8bd5\u8bd5\uff1f<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/c68c075a2e2de980b22b3ff1f8395517-17.gif\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe18\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe18\" \/><\/p>\n<p>\u770b\u8d77\u6765\u5df2\u7ecf\u4e0d\u9519\u4e86\u3002\u90a3\u6211\u4eec\u63a5\u4e0b\u6765\u8be5\u600e\u4e48\u529e\u5462\uff1f\u662f\u4e0d\u662f\u8fd8\u6709\u4e2a\u900f\u660e\u5ea6\u6ca1\u641e\u5440\u3002<\/p>\n<p>\u900f\u660e\u5ea6\u7684\u8bdd\uff0c\u6211\u4eec\u60f3\u60f3\u8be5\u5982\u4f55\u53bb\u8bbe\u7f6e\u5462\uff1f\u9996\u5148\uff0c\u5e94\u8be5\u662f\u8d8a\u8fdc\u8d8a\u900f\u660e\uff0c\u76f4\u5230\u6700\u5927\u503c\uff0c\u5b8c\u5168\u900f\u660e\u3002\u8fd9\u5c31\u662f\u4e86\uff0c\u900f\u660e\u5ea6\u548c\u79fb\u52a8\u8ddd\u79bb\u662f\u606f\u606f\u76f8\u5173\u7684\u3002<\/p>\n<h4>\u7c92\u5b50\u79fb\u52a8\u900f\u660e<\/h4>\n<pre>private&nbsp;fun&nbsp;updateParticle(value:&nbsp;Float)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particleList.forEach&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;...&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u8bbe\u7f6e\u7c92\u5b50\u7684\u900f\u660e\u5ea6\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;it.alpha=&nbsp;((1f&nbsp;-&nbsp;(it.y-centerY)&nbsp;\/&nbsp;it.maxOffset)&nbsp;&nbsp;*&nbsp;225f).toInt()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;...\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n}override&nbsp;fun&nbsp;onDraw(canvas:&nbsp;Canvas)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;...&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;time&nbsp;=&nbsp;measureTimeMillis&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particleList.forEach&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u8bbe\u7f6e\u753b\u7b14\u7684\u900f\u660e\u5ea6\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;paint.alpha=it.alpha\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;canvas.drawCircle(it.x,&nbsp;it.y,&nbsp;it.radius,&nbsp;paint)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;...\n}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u518d\u770b\u4e00\u4e0b\u6548\u679c\u3002\u3002\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/c68c075a2e2de980b22b3ff1f8395517-18.gif\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe19\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe19\" \/><\/p>\n<p>\u770b\u8d77\u6765\u4e0d\u9519\u4e86\uff0c\u6709\u70b9\u610f\u601d\u4e86\u54e6~~\u4e0d\u8fc7\u597d\u50cf\u4e0d\u591f\u5bc6\u96c6\uff0c\u6211\u4eec\u628a\u7c92\u5b50\u6570\u91cf\u8c03\u6574\u5230500\u5c31\u4f1a\u597d\u5f88\u591a\u54df\u3002\u800c\u4e14\uff0c\u4e0d\u77e5\u9053\u5927\u5bb6\u6709\u6ca1\u6709\u53d1\u73b0\u5728\u52a8\u753b\u521a\u521a\u52a0\u8f7d\u7684\u65f6\u5019\uff0c\u90a3\u4e2a\u6548\u679c\u662f\u5f88\u4e0d\u597d\u7684\u3002\u56e0\u4e3a\u6240\u6709\u7684\u4f8b\u5b50\u8d77\u59cb\u70b9\u662f\u4e00\u6837\u7684\uff0c\u901f\u5ea6\u4e5f\u96be\u514d\u4f1a\u6709\u4e00\u6837\u7684\uff0c\u6240\u4ee5\u6548\u679c\u4e0d\u662f\u5f88\u597d\uff0c\u53ea\u9700\u8981\u5728\u6dfb\u52a0\u7c92\u5b50\u7684\u65f6\u5019\uff0cY\u503c\u4e5f\u521d\u59cb\u5316\u5373\u53ef\u3002<\/p>\n<pre>override&nbsp;fun&nbsp;onSizeChanged(w:&nbsp;Int,&nbsp;h:&nbsp;Int,&nbsp;oldw:&nbsp;Int,&nbsp;oldh:&nbsp;Int)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;super.onSizeChanged(w,&nbsp;h,&nbsp;oldw,&nbsp;oldh)\n&nbsp;&nbsp;&nbsp;&nbsp;...&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;nextY=0f\n&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(i&nbsp;in&nbsp;0..500)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;...&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u521d\u59cb\u5316Y\u503c\uff0c\u8fd9\u91cc\u662f\u4ee5\u8d77\u59cb\u70b9\u4f5c\u4e3a\u6700\u4f4e\u503c\uff0c\u6700\u5927\u8ddd\u79bb\u4f5c\u4e3a\u6700\u5927\u503c\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;nextY=&nbsp;random.nextInt(400)+centerY\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;speed=&nbsp;random.nextInt(10)+5\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particleList.add(\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Particle(nextX.toFloat(),&nbsp;nextY,&nbsp;2f,&nbsp;speed.toFloat(),&nbsp;100)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)\n&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;animator.start()\n}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u6837\u4e00\u6765\uff0c\u6548\u679c\u5c31\u4f1a\u5f88\u597d\u4e86\uff0c\u6ca1\u6709\u4e00\u70b9\u95ee\u9898\u4e86\u3002\u73b0\u5728\u770b\u6765\uff0c\u4f3c\u4e4e\u9664\u4e86\u4e0d\u662f\u5706\u5f62\u4ee5\u5916\uff0c\u6ca1\u6709\u4ec0\u4e48\u592a\u5927\u7684\u95ee\u9898\u4e86\u3002\u90a3\u6211\u4eec\u4e0b\u4e00\u6b65\u5c31\u8be5\u601d\u8003\u5982\u4f55\u8ba9\u5b83\u53d8\u6210\u5706\u5f62\u90a3\u6837\u751f\u6210\u7c92\u5b50\u5462\uff1f<\/p>\n<h3>\u5b9a\u4e49\u5706\u5f62<\/h3>\n<p>\u9996\u5148\u8fd9\u4e2a\u5706\u5f62\u662f\u5706\uff0c\u4f46\u53c8\u4e0d\u80fd\u753b\u51fa\u6765\u3002<\/p>\n<p>\u4ec0\u4e48\u610f\u601d\uff1f<\/p>\n<p>\u5c31\u662f\u8bf4\uff0c\u867d\u7136\u662f\u5706\u5f62\u751f\u6210\u7c92\u5b50\uff0c\u4f46\u662f\u4e0d\u80fd\u591f\u753b\u51fa\u6765\u8fd9\u4e2a\u5706\uff0c\u6240\u4ee5\u8fd9\u4e2a\u5706\u53ea\u662f\u4e2a\u8def\u5f84\u800c\u5df2\u3002<\/p>\n<p>\u8def\u5f84\u662f\u4ec0\u4e48\uff1f\u6ca1\u9519\uff0c\u5c31\u662fPath\u3002<\/p>\n<p>\u719f\u6089\u7684\u5c0f\u4f19\u4f34\u4eec\u5c31\u77e5\u9053\uff0cPath\u53ef\u4ee5\u6dfb\u52a0\u5404\u79cd\u5404\u6837\u7684\u8def\u5f84\uff0c\u7531\u5706\uff0c\u7ebf\uff0c\u66f2\u7ebf\u7b49\u3002\u6240\u4ee5\u6211\u4eec\u8fd9\u91cc\u5c31\u9700\u8981\u4e00\u4e2a\u5706\u7684\u8def\u5f84\u3002<\/p>\n<p>\u5b9a\u4e49\u4e00\u4e2aPath\uff0c\u6dfb\u52a0\u5706\u3002\u6ce8\u610f\uff0c\u6211\u4eec\u4e0a\u9762\u8bb2\u7684\u6027\u80fd\u4f18\u5316\uff0c\u4e0d\u8981\u518donDraw\u4e2d\u5b9a\u4e49\u54e6\u3002<\/p>\n<pre>var&nbsp;path&nbsp;=&nbsp;Path()override&nbsp;fun&nbsp;onSizeChanged(w:&nbsp;Int,&nbsp;h:&nbsp;Int,&nbsp;oldw:&nbsp;Int,&nbsp;oldh:&nbsp;Int)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;...\n&nbsp;&nbsp;&nbsp;&nbsp;path.addCircle(centerX,&nbsp;centerY,&nbsp;280f,&nbsp;Path.Direction.CCW)\n&nbsp;&nbsp;&nbsp;&nbsp;...\n}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728onSizeChanged\u4e2d\u6211\u4eec\u6dfb\u52a0\u4e86\u4e00\u4e2a\u5706\uff0c\u53c2\u6570\u7684\u610f\u601d\u6211\u5c31\u4e0d\u8bb2\u4e86\uff0c\u5c0f\u4f19\u4f34\u5e94\u8be5\u90fd\u660e\u767d\u3002<\/p>\n<p>\u73b0\u5728\u6211\u4eec\u5df2\u7ecf\u5b9a\u4e49\u4e86\u8fd9\u4e2aPath\uff0c\u4f46\u662f\u6211\u4eec\u53c8\u4e0d\u753b\uff0c\u90a3\u6211\u4eec\u8be5\u600e\u4e48\u529e\u5462\uff1f<\/p>\n<p>\u6211\u4eec\u601d\u8003\u4e00\u4e0b\uff0c\u6211\u4eec\u5982\u679c\u60f3\u8981\u5706\u5f62\u751f\u4ea7\u7c92\u5b50\u7684\u8bdd\uff0c\u662f\u4e0d\u662f\u5f97\u9700\u8981\u8fd9\u4e2a\u5706\u4e0a\u7684\u4efb\u610f\u4e00\u70b9\u7684X,Y\u503c\u6709\u4e86\u8fd9\u4e2aX,Y\u503c\uff0c\u6211\u4eec\u624d\u80fd\u591f\u5c06\u7c92\u5b50\u7684\u521d\u59cb\u4f4d\u7f6e\u7ed9\u786e\u5b9a\u5462\uff1f\u770b\u770b\u6709\u6ca1\u4eba\u6709\u77e5\u9053\u600e\u4e48\u786e\u5b9a\u4f4d\u7f6e\u554a\uff0c\u77e5\u9053\u7684\u5c0f\u4f19\u4f34\u4e3e\u624b\u793a\u610f\u4e00\u4e0b<\/p>\n<p>\u554a\uff0c\u7b49\u4e86\u5341\u51e0\u5206\u949f\u4e5f\u6ca1\u89c1\u6709\u5c0f\u4f19\u4f34\u4e3e\u624b\uff0c\u770b\u6765\u662f\u6ca1\u4eba\u4e86\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/c68c075a2e2de980b22b3ff1f8395517-19.jpg\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe20\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe20\" \/><\/p>\n<p>\u597d\u6c49\u9976\u547d\uff01<\/p>\n<p>\u6211\u8bf4\uff0c\u6211\u8bf4\uff0c\u5176\u5b9e\u5c31\u662fPathMeasure\u8fd9\u4e2a\u7c7b\uff0c\u5b83\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5f97\u5230\u5728\u8fd9\u4e2a\u8def\u5f84\u4e0a\u4efb\u610f\u4e00\u70b9\u7684\u4f4d\u7f6e\u548c\u65b9\u5411\u3002\u4e0d\u4f1a\u7528\u7684\u5c0f\u4f19\u4f34\u8d76\u7d27\u8c37\u6b4c\u4e00\u4e0b\u7528\u6cd5\u5427~\u6216\u8005\u770b\u6211\u4ee3\u7801\u4e5f\u5f88\u597d\u7406\u89e3\u7684\u3002<\/p>\n<pre>private&nbsp;val&nbsp;pathMeasure&nbsp;=&nbsp;PathMeasure()\/\/\u8def\u5f84\uff0c\u7528\u4e8e\u6d4b\u91cf\u6269\u6563\u5706\u67d0\u4e00\u5904\u7684X,Y\u503cprivate&nbsp;var&nbsp;pos&nbsp;=&nbsp;FloatArray(2)&nbsp;\/\/\u6269\u6563\u5706\u4e0a\u67d0\u4e00\u70b9\u7684x,yprivate&nbsp;val&nbsp;tan&nbsp;=&nbsp;FloatArray(2)\/\/\u6269\u6563\u5706\u4e0a\u67d0\u4e00\u70b9\u5207\u7ebf\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u91cc\u6211\u4eec\u5b9a\u4e49\u4e86\u4e09\u4e2a\u53d8\u91cf\uff0c\u9996\u5f53\u5176\u51b2\u7684\u5c31\u662fPathMeasure\u7c7b\uff0c\u7b2c\u4e8c\u4e2a\u548c\u7b2c\u4e09\u4e2a\u53d8\u91cf\u662f\u4e00\u4e2afloat\u6570\u7ec4\uff0cpos\u662f\u7528\u6765\u4fdd\u5b58\u5706\u4e0a\u67d0\u4e00\u70b9\u7684\u4f4d\u7f6e\u4fe1\u606f\u7684\uff0c\u5176\u4e2dpos[0]\u662fX\u503c\uff0cpos[1]\u662fY\u503c\u3002<\/p>\n<p>\u7b2c\u4e8c\u4e2a\u53d8\u91cftan\u662f\u67d0\u4e00\u70b9\u7684\u5207\u7ebf\u503c\uff0c\u4f60\u53ef\u4ee5\u6682\u4e14\u7406\u89e3\u4e3a\u662f\u67d0\u4e00\u70b9\u7684\u89d2\u5ea6\u3002\u4e0d\u8fc7\u6211\u4eec\u8fd9\u4e2a\u6548\u679c\u7528\u4e0d\u5230\uff0c\u53ea\u662f\u4e2a\u51d1\u53c2\u6570\u7684\u3002<\/p>\n<p>PathMeasure\u6709\u4e2a\u5f88\u91cd\u8981\u7684\u65b9\u6cd5\u5c31\u662fgetPosTan\u65b9\u6cd5\u3002<\/p>\n<pre>boolean&nbsp;getPosTan&nbsp;(float&nbsp;distance,&nbsp;float[]&nbsp;pos,&nbsp;float[]&nbsp;tan)\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u65b9\u6cd5\u5404\u4e2a\u53c2\u6570\u91ca\u4e49\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u53c2\u6570<\/th>\n<th>\u4f5c\u7528<\/th>\n<th>\u5907\u6ce8<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u8fd4\u56de\u503c(boolean)<\/td>\n<td>\u5224\u65ad\u83b7\u53d6\u662f\u5426\u6210\u529f<\/td>\n<td>true\u8868\u793a\u6210\u529f\uff0c\u6570\u636e\u4f1a\u5b58\u5165 pos \u548c tan \u4e2d\uff0c false \u8868\u793a\u5931\u8d25\uff0cpos \u548c tan \u4e0d\u4f1a\u6539\u53d8<\/td>\n<\/tr>\n<tr>\n<td>distance<\/td>\n<td>\u8ddd\u79bb Path \u8d77\u70b9\u7684\u957f\u5ea6<\/td>\n<td>\u53d6\u503c\u8303\u56f4: 0 <\/td>\n<\/tr>\n<tr>\n<td>pos<\/td>\n<td>\u8be5\u70b9\u7684\u5750\u6807\u503c<\/td>\n<td>\u5f53\u524d\u70b9\u5728\u753b\u5e03\u4e0a\u7684\u4f4d\u7f6e\uff0c\u6709\u4e24\u4e2a\u6570\u503c\uff0c\u5206\u522b\u4e3ax\uff0cy\u5750\u6807\u3002<\/td>\n<\/tr>\n<tr>\n<td>tan<\/td>\n<td>\u8be5\u70b9\u7684\u6b63\u5207\u503c<\/td>\n<td>\u5f53\u524d\u70b9\u5728\u66f2\u7ebf\u4e0a\u7684\u65b9\u5411\uff0c\u4f7f\u7528 Math.atan2(tan[1], tan[0]) \u83b7\u53d6\u5230\u6b63\u5207\u89d2\u7684\u5f27\u5ea6\u503c\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u76f8\u4fe1\u5c0f\u4f19\u4f34\u8fd8\u662f\u80fd\u770b\u660e\u767d\u7684\uff0c\u6211\u8fd9\u91cc\u5c31\u4e0d\u4e00\u4e00\u89e3\u91ca\u4e86\u3002<\/p>\n<p>\u6240\u4ee5\u5230\u4e86\u8fd9\u91cc\uff0c\u6211\u4eec\u5df2\u7ecf\u80fd\u591f\u83b7\u53d6\u5706\u4e0a\u67d0\u4e00\u70b9\u7684\u4f4d\u7f6e\u4e86\u3002\u8fd8\u8bb0\u5f97\u6211\u4eec\u4e4b\u524d\u662f\u600e\u4e48\u8bbe\u7f6e\u521d\u59cb\u4f4d\u7f6e\u7684\u5417\uff1f\u5c31\u662fY\u503c\u56fa\u5b9a\uff0cX\u503c\u968f\u673a\uff0c\u73b0\u5728\u6211\u4eec\u5df2\u7ecf\u80fd\u591f\u5f97\u5230\u4e00\u4e2a\u6807\u51c6\u7684\u5706\u7684\u4f4d\u7f6e\u4e86\u3002\u4f46\u662f\uff0c\u5f88\u91cd\u8981\u554a\uff0c\u4f46\u662f\u5982\u679c\u6211\u4eec\u6309\u7167\u5706\u7684\u6807\u51c6\u4f4d\u7f6e\u53bb\u4e00\u4e2a\u4e2a\u653e\u7c92\u5b50\u7684\u8bdd\uff0c\u5c82\u4e0d\u5c31\u662f\u4e00\u4e2a\u5706\u4e86\uff1f\u800c\u6211\u4eec\u7684\u6548\u679c\u56fe\uff0c\u4f4d\u7f6e\u53ef\u770b\u8d77\u6765\u4e0d\u600e\u4e48\u89c4\u5f8b\u3002<\/p>\n<p>\u6240\u4ee5\u6211\u4eec\u5728\u5f97\u5230\u4e00\u4e2a\u6807\u51c6\u7684\u4f4d\u7f6e\u4e4b\u540e\uff0c\u9700\u8981\u5bf9\u5b83\u8fdb\u884c\u4e00\u4e2a\u968f\u673a\u7684\u504f\u79fb\uff0c\u504f\u79fb\u7684\u4e5f\u4e0d\u80fd\u592a\u5927\uff0c\u5426\u5219\u6210\u4e0d\u4e86\u4e00\u4e2a\u5706\u5f62\u3002<\/p>\n<h4>\u5706\u5f62\u6dfb\u52a0\u7c92\u5b50<\/h4>\n<p>\u6240\u4ee5\u6211\u4eec\u8981\u4fee\u6539\u6dfb\u52a0\u7c92\u5b50\u7684\u4ee3\u7801\u4e86\u3002<\/p>\n<pre>override&nbsp;fun&nbsp;onSizeChanged(w:&nbsp;Int,&nbsp;h:&nbsp;Int,&nbsp;oldw:&nbsp;Int,&nbsp;oldh:&nbsp;Int)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;super.onSizeChanged(w,&nbsp;h,&nbsp;oldw,&nbsp;oldh)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;centerX&nbsp;=&nbsp;(w&nbsp;\/&nbsp;2).toFloat()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;centerY&nbsp;=&nbsp;(h&nbsp;\/&nbsp;2).toFloat()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;path.addCircle(centerX,&nbsp;centerY,&nbsp;280f,&nbsp;Path.Direction.CCW)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;pathMeasure.setPath(path,&nbsp;false)&nbsp;\/\/\u6dfb\u52a0path\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;nextX&nbsp;=&nbsp;0f\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;speed=0\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;nextY=0f\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(i&nbsp;in&nbsp;0..500)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u6309\u6bd4\u4f8b\u6d4b\u91cf\u8def\u5f84\u4e0a\u6bcf\u4e00\u70b9\u7684\u503c\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;pathMeasure.getPosTan(i&nbsp;\/&nbsp;500f&nbsp;*&nbsp;pathMeasure.length,&nbsp;pos,&nbsp;tan)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;nextX&nbsp;=&nbsp;pos[0]+random.nextInt(6)&nbsp;-&nbsp;3f&nbsp;\/\/X\u503c\u968f\u673a\u504f\u79fb\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;nextY=&nbsp;&nbsp;pos[1]+random.nextInt(6)&nbsp;-&nbsp;3f\/\/Y\u503c\u968f\u673a\u504f\u79fb\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;speed=&nbsp;random.nextInt(10)+5\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particleList.add(\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Particle(nextX,&nbsp;nextY,&nbsp;2f,&nbsp;speed.toFloat(),&nbsp;100)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;animator.start()\n&nbsp;&nbsp;&nbsp;&nbsp;}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u73b0\u5728\u8fd0\u884c\u8d77\u6765\u5c31\u662f\u8fd9\u6837\u5b50\u4e86<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/ba668ce86cbf5a7157575cec96ace65c-20.gif\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe21\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe21\" \/><\/p>\n<p>\u54a6\uff0c\u6548\u679c\u548c\u6211\u60f3\u8c61\u7684\u4e0d\u4e00\u6837\u554a\u3002\u6700\u521d\u597d\u50cf\u662f\u4e2a\u5706\uff0c\u53ef\u662f\u4e0d\u662f\u5e94\u8be5\u50cf\u6d9f\u6f2a\u4e00\u6837\u6269\u6563\u5417\uff0c\u53ef\u4f60\u8fd9\u8fd8\u662f\u5f80\u4e0b\u843d\u5440\u3002<\/p>\n<p>\u8fd8\u8bb0\u5f97\u6211\u4eec\u4e4b\u524d\u5b9a\u4e49\u7684\u52a8\u753b\u7684\u6548\u679c\u5417\uff0c\u5c31\u662fX\u503c\u4e0d\u53d8\uff0cY\u503c\u4e0d\u65ad\u6269\u5927\uff0c\u90a3\u53ef\u4e0d\u5c31\u662f\u4e00\u76f4\u5f80\u4e0b\u843d\u5417\uff1f\u6240\u4ee5\u8fd9\u91cc\u6211\u4eec\u9700\u8981\u4fee\u6539\u52a8\u753b\u89c4\u5219\u3002<\/p>\n<h3>\u4fee\u6539\u52a8\u753b<\/h3>\n<p>\u95ee\u9898\u662f\u600e\u4e48\u4fee\u6539\u52a8\u753b\u5462\uff1f<\/p>\n<p>\u601d\u8003\u4e00\u4e0b\uff0c\u6548\u679c\u56fe\u4e2d\u7684\u52a8\u753b\u5e94\u8be5\u662f\u5f80\u5916\u6269\u6563\uff0c\u6269\u6563\u662f\u4ec0\u4e48\u610f\u601d\uff1f\u5c31\u662f\u6cbf\u7740\u5b83\u5230\u5706\u5fc3\u7684\u65b9\u5411\u53cd\u5411\u8fd0\u52a8\uff0c\u5bf9\u4e0d\u5bf9\uff1f<\/p>\n<p>\u4e0a\u4e00\u5f20\u56fe\u6765\u7406\u89e3\u4e00\u4e0b<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/ba668ce86cbf5a7157575cec96ace65c-21.png\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe22\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe22\" \/><\/p>\n<p>\u6b64\u65f6\u5185\u5fc3\u5706\u662f\u6211\u4eec\u73b0\u5728\u7c92\u5b50\u6240\u5904\u7684\u5706\uff0c\u5047\u8bbe\u6709\u4e00\u4e2a\u7c92\u5b50\u6b64\u65f6\u5728B\u70b9\uff0c\u90a3\u4e48\u5982\u679c\u8981\u6269\u6563\u7684\u8bdd\uff0c\u5b83\u5e94\u8be5\u5230H\u70b9\u4f4d\u7f6e\u3002<\/p>\n<p>\u8fd9\u4e2aH\u70b9\u7684\u4f4d\u7f6e\u5e94\u8be5\u5982\u4f55\u83b7\u53d6\u5462\uff1f<\/p>\n<p>\u5982\u679c\u4ee5A\u70b9\u4e3a\u539f\u70b9\u7684\u8bdd\uff0c\u6b64\u65f6B\u70b9\u7684\u4f4d\u7f6e\u6211\u4eec\u662f\u77e5\u9053\u7684\uff0c\u5b83\u5206\u522b\u662fX\u548cY\u3002X=AG\uff0cY=BG\u3002\u6211\u4eec\u4e5f\u5e94\u8be5\u80fd\u53d1\u73b0\uff0c\u7531AB\u5ef6\u7533\u81f3AH\u7684\u8fc7\u7a0b\u4e2d\uff0c\u2220Z\u662f\u59cb\u7ec8\u4e0d\u53d8\u7684\u3002<\/p>\n<p>\u540c\u65f6\u6211\u4eec\u5e94\u8be5\u80fd\u53d1\u73b0\uff0c\u6269\u6563\u8fd9\u4e2a\u8fc7\u7a0b\u5b9e\u9645\u4e0a\u662f\u5706\u53d8\u5927\u4e86\uff0c\u6240\u4ee5B\u53d8\u632a\u5230\u4e86H\u70b9\u4e0a\u3002\u800c\u8fd9\u4e2a\u6269\u5927\u7684\u503c\u7684\u610f\u601d\u5c31\u662f\u5706\u7684\u534a\u5f84\u53d8\u5927\u4e86\uff0c\u5373\u534a\u5f84R = AB\uff0c\u73b0\u5728\u534a\u5f84R=AH\u3002<\/p>\n<p>AB\u7684\u503c\u6211\u4eec\u662f\u77e5\u9053\u7684\uff0c\u5c31\u662f\u6211\u4eec\u4e00\u5f00\u59cb\u753b\u7684\u5706\u7684\u534a\u5f84\u561b\u3002\u53ef\u662fAH\u662f\u591a\u5c11\u5462\uff1f<\/p>\n<p>\u4e0d\u59a8\u4ee4\u79fb\u52a8\u8ddd\u79bboffset=AH-AB\uff0c\u90a3\u4e48\u8fd9\u4e2a\u8fd0\u52a8\u8ddd\u79bboffset\u662f\u591a\u5c11\u5462\uff1f\u6211\u4eec\u60f3\u4e00\u4e0b\uff0c\u5728\u4e4b\u524d\u7684\u4e0b\u843d\u4e2d\uff0c\u8ddd\u79bb\u662f\u4e0d\u662f\u7b49\u4e8e\u901f\u5ea6\u4e58\u4ee5\u65f6\u95f4\u5462\uff1f\u800c\u6211\u4eec\u8fd9\u91cc\u6ca1\u6709\u65f6\u95f4\u8fd9\u4e2a\u53d8\u91cf\uff0c\u6709\u7684\u53ea\u662f\u4e00\u6b21\u6b21\u5faa\u73af\uff0c\u5faa\u73af\u4e2d\u7c92\u5b50\u7684Y\u503c\u4e0d\u65ad\u52a0\u901f\u5ea6\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u53d8\u91cfoffset\u503c\u6765\u8bb0\u5f55\u79fb\u52a8\u7684\u8ddd\u79bb\uff0c<\/p>\n<p>\u6240\u4ee5\u8fd9\u4e2aoffset &nbsp;+= speed<\/p>\n<p>\u90a3\u6211\u4eec\u73b0\u5728offset\u77e5\u9053\u4e86\uff0c\u4e5f\u5c31\u662f\u8bf4AH-AB\u7684\u503c\u77e5\u9053\u4e86\uff0cAB\u6211\u4eec\u4e5f\u77e5\u9053\uff0c\u6211\u4eec\u5c31\u80fd\u6c42\u51faAH\u7684\u503c<\/p>\n<p>AH=AB +offset<\/p>\n<p>AH\u77e5\u9053\u4e86\uff0c\u2220Z\u4e5f\u77e5\u9053\u4e86\uff0c\u5229\u7528\u4e09\u89d2\u51fd\u6570\u6211\u4eec\u53ef\u4ee5\u5f97\u5230H\u70b9\u7684\u5750\u6807\u4e86\u3002\u8bbe\u521d\u59cb\u534a\u5f84\u4e3aR=AB<\/p>\n<p>A\u70b9\u4e3a\u539f\u70b9\uff0c<span><span><span><span> c o s ( \u2220 Z ) = A G \/ A B \uff0c s i n ( \u2220 Z ) = B G \/ A B cos(\u2220Z)=AG\/AB\uff0csin(\u2220Z)=BG\/AB <\/span><span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>c<\/span><span>o<\/span><span>s<\/span><span>(<\/span><span>\u2220<\/span><span style=\"margin-right:0.07153em\">Z<\/span><span>)<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>A<\/span><span>G<\/span><span>\/<\/span><span>A<\/span><span style=\"margin-right:0.05017em\">B<\/span><span>\uff0c<\/span><span>s<\/span><span>i<\/span><span>n<\/span><span>(<\/span><span>\u2220<\/span><span style=\"margin-right:0.07153em\">Z<\/span><span>)<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span style=\"margin-right:0.05017em\">B<\/span><span>G<\/span><span>\/<\/span><span>A<\/span><span style=\"margin-right:0.05017em\">B<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u6240\u4ee5AD<\/p>\n<p><span><span><span> A D = A H \u2217 c o s ( \u2220 Z ) = ( A H \u2217 A G ) \/ A B = ( ( R + o f f s e t ) \u2217 A G ) \/ R AD = AH * cos(\u2220Z) = (AH * AG)\/AB=( (R+offset) * AG) \/ R <\/span><span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span>A<\/span><span style=\"margin-right:0.02778em\">D<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span>A<\/span><span style=\"margin-right:0.08125em\">H<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2217<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>c<\/span><span>o<\/span><span>s<\/span><span>(<\/span><span>\u2220<\/span><span style=\"margin-right:0.07153em\">Z<\/span><span>)<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>(<\/span><span>A<\/span><span style=\"margin-right:0.08125em\">H<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2217<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>A<\/span><span>G<\/span><span>)<\/span><span>\/<\/span><span>A<\/span><span style=\"margin-right:0.05017em\">B<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>(<\/span><span>(<\/span><span style=\"margin-right:0.00773em\">R<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>+<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>o<\/span><span style=\"margin-right:0.10764em\">f<\/span><span style=\"margin-right:0.10764em\">f<\/span><span>s<\/span><span>e<\/span><span>t<\/span><span>)<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2217<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>A<\/span><span>G<\/span><span>)<\/span><span>\/<\/span><span style=\"margin-right:0.00773em\">R<\/span><\/span><\/span><\/span><\/span><\/p>\n<p>HD<\/p>\n<p><span><span><span> H D = A H \u2217 s i n ( \u2220 Z ) = ( A H \u2217 B G ) \/ A B = ( ( R + o f f s e t ) \u2217 B G ) \/ R HD = AH * sin(\u2220Z) = (AH*BG)\/AB = ( (R+offset) * BG) \/ R <\/span><span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span style=\"margin-right:0.08125em\">H<\/span><span style=\"margin-right:0.02778em\">D<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span>A<\/span><span style=\"margin-right:0.08125em\">H<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2217<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>s<\/span><span>i<\/span><span>n<\/span><span>(<\/span><span>\u2220<\/span><span style=\"margin-right:0.07153em\">Z<\/span><span>)<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>(<\/span><span>A<\/span><span style=\"margin-right:0.08125em\">H<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2217<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span style=\"margin-right:0.05017em\">B<\/span><span>G<\/span><span>)<\/span><span>\/<\/span><span>A<\/span><span style=\"margin-right:0.05017em\">B<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>(<\/span><span>(<\/span><span style=\"margin-right:0.00773em\">R<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>+<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>o<\/span><span style=\"margin-right:0.10764em\">f<\/span><span style=\"margin-right:0.10764em\">f<\/span><span>s<\/span><span>e<\/span><span>t<\/span><span>)<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2217<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span style=\"margin-right:0.05017em\">B<\/span><span>G<\/span><span>)<\/span><span>\/<\/span><span style=\"margin-right:0.00773em\">R<\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u6309\u7406\u8bf4\u6ca1\u95ee\u9898\u4e86\uff0c\u8fd9\u4e2a\u65f6\u5019H\u7684\u503c\u6211\u4eec\u5df2\u7ecf\u5f97\u5230\u4e86\u3002\u4f46\u662f\uff0c\u6ce8\u610f\u6b64\u65f6\u6211\u4eec\u662f\u4ee5A\u70b9\u4e3a\u539f\u70b9\u5f97\u51fa\u6765\u7684\u503c\uff0c\u800c\u6211\u4eec\u7684\u624b\u673a\u5c4f\u5e55\u4e2d\u662f\u4ee5\u5de6\u4e0a\u89d2\u4e3a\u539f\u70b9\u7684\u3002A\u70b9\u7684\u503c\u6211\u4eec\u6b64\u65f6\u5728\u7a0b\u5e8f\u4e2d\u5199\u6b7b\u4e86\u662fcenterX\u548ccenterY\uff0c\u6240\u4ee5\u4e0a\u9762\u7684\u516c\u5f0f\u8fd8\u5f97\u6539\u4e00\u4e0b<\/p>\n<p><span><span><span> A D = ( ( R + o f f s e t ) \u2217 ( B . X \u2212 c e n t e r X ) ) \/ R AD = ( (R+offset) * (B.X &#8211; centerX)) \/ R <\/span><span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span>A<\/span><span style=\"margin-right:0.02778em\">D<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>(<\/span><span>(<\/span><span style=\"margin-right:0.00773em\">R<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>+<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>o<\/span><span style=\"margin-right:0.10764em\">f<\/span><span style=\"margin-right:0.10764em\">f<\/span><span>s<\/span><span>e<\/span><span>t<\/span><span>)<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2217<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>(<\/span><span style=\"margin-right:0.05017em\">B<\/span><span>.<\/span><span style=\"margin-right:0.07847em\">X<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2212<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>c<\/span><span>e<\/span><span>n<\/span><span>t<\/span><span>e<\/span><span style=\"margin-right:0.02778em\">r<\/span><span style=\"margin-right:0.07847em\">X<\/span><span>)<\/span><span>)<\/span><span>\/<\/span><span style=\"margin-right:0.00773em\">R<\/span><\/span><\/span><\/span><\/span><\/p>\n<p><span><span><span> H D = ( ( R + o f f s e t ) \u2217 ( c e n t e r Y \u2212 B . Y ) ) \/ R HD = ( (R+offset) * (centerY-B.Y) ) \/ R <\/span><span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span style=\"margin-right:0.08125em\">H<\/span><span style=\"margin-right:0.02778em\">D<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>(<\/span><span>(<\/span><span style=\"margin-right:0.00773em\">R<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>+<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>o<\/span><span style=\"margin-right:0.10764em\">f<\/span><span style=\"margin-right:0.10764em\">f<\/span><span>s<\/span><span>e<\/span><span>t<\/span><span>)<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2217<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>(<\/span><span>c<\/span><span>e<\/span><span>n<\/span><span>t<\/span><span>e<\/span><span style=\"margin-right:0.02778em\">r<\/span><span style=\"margin-right:0.22222em\">Y<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2212<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span style=\"margin-right:0.05017em\">B<\/span><span>.<\/span><span style=\"margin-right:0.22222em\">Y<\/span><span>)<\/span><span>)<\/span><span>\/<\/span><span style=\"margin-right:0.00773em\">R<\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u6ce8\u610f\u54e6\uff0c\u6b64\u65f6\u53ea\u662fAD\u548cHD\u7684\u503c\uff0c\u53ea\u662f\u8fd9\u4e24\u4e2a\u7ebf\u6bb5\u7684\u957f\u5ea6\u800c\u4e0d\u662f\u771f\u6b63H\u70b9\u7684\u5750\u6807\u3002H\u70b9\u7684\u5750\u6807\u5e94\u8be5\u5728A\u70b9\u7684\u57fa\u7840\u4e0a\u589e\u52a0\uff0c\u5373<\/p>\n<p><span><span><span> H . X = A D + c e n t e r X = ( ( R + o f f s e t ) \u2217 ( B . X \u2212 c e n t e r X ) ) \/ R + c e n t e r X H.X=AD+centerX=( (R+offset) * (B.X &#8211; centerX)) \/ R + centerX <\/span><span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span style=\"margin-right:0.08125em\">H<\/span><span>.<\/span><span style=\"margin-right:0.07847em\">X<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:0.76666em;vertical-align:-0.08333em\"><\/span><span>A<\/span><span style=\"margin-right:0.02778em\">D<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>+<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span>c<\/span><span>e<\/span><span>n<\/span><span>t<\/span><span>e<\/span><span style=\"margin-right:0.02778em\">r<\/span><span style=\"margin-right:0.07847em\">X<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>(<\/span><span>(<\/span><span style=\"margin-right:0.00773em\">R<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>+<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>o<\/span><span style=\"margin-right:0.10764em\">f<\/span><span style=\"margin-right:0.10764em\">f<\/span><span>s<\/span><span>e<\/span><span>t<\/span><span>)<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2217<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>(<\/span><span style=\"margin-right:0.05017em\">B<\/span><span>.<\/span><span style=\"margin-right:0.07847em\">X<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2212<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>c<\/span><span>e<\/span><span>n<\/span><span>t<\/span><span>e<\/span><span style=\"margin-right:0.02778em\">r<\/span><span style=\"margin-right:0.07847em\">X<\/span><span>)<\/span><span>)<\/span><span>\/<\/span><span style=\"margin-right:0.00773em\">R<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>+<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span>c<\/span><span>e<\/span><span>n<\/span><span>t<\/span><span>e<\/span><span style=\"margin-right:0.02778em\">r<\/span><span style=\"margin-right:0.07847em\">X<\/span><\/span><\/span><\/span><\/span><\/p>\n<p><span><span><span> H . Y = c e n t e r Y \u2212 H D = c e n t e r Y \u2212 ( ( R + o f f s e t ) \u2217 ( c e n t e r Y \u2212 B . Y ) ) \/ R H.Y = centerY &#8211; HD = centerY -( (R+offset) * (centerY-B.Y) ) \/ R <\/span><span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span style=\"margin-right:0.08125em\">H<\/span><span>.<\/span><span style=\"margin-right:0.22222em\">Y<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:0.76666em;vertical-align:-0.08333em\"><\/span><span>c<\/span><span>e<\/span><span>n<\/span><span>t<\/span><span>e<\/span><span style=\"margin-right:0.02778em\">r<\/span><span style=\"margin-right:0.22222em\">Y<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2212<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span style=\"margin-right:0.08125em\">H<\/span><span style=\"margin-right:0.02778em\">D<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:0.76666em;vertical-align:-0.08333em\"><\/span><span>c<\/span><span>e<\/span><span>n<\/span><span>t<\/span><span>e<\/span><span style=\"margin-right:0.02778em\">r<\/span><span style=\"margin-right:0.22222em\">Y<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2212<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>(<\/span><span>(<\/span><span style=\"margin-right:0.00773em\">R<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>+<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>o<\/span><span style=\"margin-right:0.10764em\">f<\/span><span style=\"margin-right:0.10764em\">f<\/span><span>s<\/span><span>e<\/span><span>t<\/span><span>)<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2217<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>(<\/span><span>c<\/span><span>e<\/span><span>n<\/span><span>t<\/span><span>e<\/span><span style=\"margin-right:0.02778em\">r<\/span><span style=\"margin-right:0.22222em\">Y<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2212<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span style=\"margin-right:0.05017em\">B<\/span><span>.<\/span><span style=\"margin-right:0.22222em\">Y<\/span><span>)<\/span><span>)<\/span><span>\/<\/span><span style=\"margin-right:0.00773em\">R<\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u800c\u4e14\u8fd9\u53ea\u662f\u5728\u53f3\u4e0a\u534a\u533a\u4e5f\u5c31\u662f\u7b2c\u4e00\u8c61\u9650\u662f\u8fd9\u6837\u8ba1\u7b97\u7684\uff0c\u5de6\u534a\u533a\u548c\u53f3\u4e0b\u534a\u533a\u7684\u8ba1\u7b97\u89c4\u5219\u4e5f\u4e0d\u4e00\u6837\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/61161f2f277a1552995c3f35a7de11ad-22.jpg\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe23\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe23\" \/><\/p>\n<p>\u5144\u53f0\uff0c\u4e0d\u8981\u6025\uff0c\u5148\u542c\u6211\u8bf4\uff0c\u4e00\u4f1a\u8fd8\u4e0d\u61c2\u7684\u8bdd\u6211\u4eb2\u81ea\u5e2e\u4f60\u8e22\u677f\u51f3\u3002<\/p>\n<p>\u5c0f\u4f19\u4f34\u7eb7\u7eb7\u8868\u793a\uff0c\u4e0a\u8fb9\u7684\u516c\u5f0f\u4e5f\u592a\u590d\u6742\u4e86\uff0c\u6bcf\u4e2a\u8c61\u9650\u90fd\u8ba1\u7b97\u4e00\u904d\uff0c\u81ea\u5b9a\u4e49View\u5c31\u8fd9\u4e48\u590d\u6742\u5417\uff1f<\/p>\n<p>\u54c8\u54c8\u54c8\u54c8\uff0c\u5176\u5b9e\u4e0d\u662f\u3002\u6211\u6643\u70b9\u4f60\u7684\u3002<\/p>\n<p>\u89c4\u5219\u4e5f\u786e\u5b9e\u662f\u4e0a\u9762\u6240\u8bf4\u7684\uff0c\u4f46\u662f\u6211\u4eec\u662f\u4ec0\u4e48\u4eba\uff1f\u7a0b\u5e8f\u5458\u554a\uff0c\u6700\u4e0d\u5e94\u8be5\u6015\u7684\u5c31\u662f\u8ba1\u7b97\u4e86\u3002\u53cd\u6b63CPU\u7b97\u4e0d\u662f\u6211\u7b97\u3002<\/p>\n<p>\u6211\u4eec\u5728\u5206\u6790\u4e00\u904d\uff0c\u8fd9\u6b21\u4e00\u5b9a\u5f88\u7b80\u5355\uff0c\u4f60\u4e0d\u8981\u8dd1\uff01<\/p>\n<p>\u9996\u5148\u6709\u4e2a\u89d2\u5ea6Z\uff0c\u6211\u4eec\u9700\u8981\u8bb0\u4e0b\u6bcf\u4e2a\u7c92\u5b50\u7684\u89d2\u5ea6\uff0c\u53ef\u662f\u8fd9\u4e2a\u89d2\u5ea6\u7684\u8ba1\u7b97\u5c31\u6709\u7684\u8bf4\u9053\u4e86\u3002<\/p>\n<p>\u6211\u4eec\u5148\u4ee5\u5de6\u53f3\u4e24\u4e2a\u534a\u533a\u8ba1\u7b97\uff0c\u5728\u53f3\u534a\u533a\u7684\u65f6\u5019\u89d2\u5ea6<\/p>\n<p><span><span><span> Z = ( B . X \u2212 c e n t e r X ) \/ R Z = (B.X -centerX) \/ R <\/span><span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span style=\"margin-right:0.07153em\">Z<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>(<\/span><span style=\"margin-right:0.05017em\">B<\/span><span>.<\/span><span style=\"margin-right:0.07847em\">X<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2212<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>c<\/span><span>e<\/span><span>n<\/span><span>t<\/span><span>e<\/span><span style=\"margin-right:0.02778em\">r<\/span><span style=\"margin-right:0.07847em\">X<\/span><span>)<\/span><span>\/<\/span><span style=\"margin-right:0.00773em\">R<\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u5047\u8bbe\u8fd9\u4e2a\u65f6\u5019\u2220Z\u662f30\u00b0\uff0c\u90a3\u4e48\u4e5f\u5c31\u662f\u8bf4<\/p>\n<p><span><span><span> c o s \u2220 Z = 0.5 cos\u2220Z = 0.5 <\/span><span><span><span style=\"height:0.69224em;vertical-align:0em\"><\/span><span>c<\/span><span>o<\/span><span>s<\/span><span>\u2220<\/span><span style=\"margin-right:0.07153em\">Z<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:0.64444em;vertical-align:0em\"><\/span><span>0<\/span><span>.<\/span><span>5<\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u90a3\u4e48H\u7684X\u503c\u4e5f\u5c31\u662f<\/p>\n<p><span><span><span> H . X = A H \u2217 0.5 + c e n t e r X H.X= AH * 0.5 +centerX <\/span><span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span style=\"margin-right:0.08125em\">H<\/span><span>.<\/span><span style=\"margin-right:0.07847em\">X<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span>A<\/span><span style=\"margin-right:0.08125em\">H<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2217<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:0.72777em;vertical-align:-0.08333em\"><\/span><span>0<\/span><span>.<\/span><span>5<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>+<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span>c<\/span><span>e<\/span><span>n<\/span><span>t<\/span><span>e<\/span><span style=\"margin-right:0.02778em\">r<\/span><span style=\"margin-right:0.07847em\">X<\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u53ef\u662f\u5982\u679c\u5728\u5de6\u534a\u533a\u7684\u8bdd\u89d2\u5ea6Z<\/p>\n<p><span><span><span> c o s \u2220 Z = \u2212 0.5 cos\u2220Z= -0.5 <\/span><span><span><span style=\"height:0.69224em;vertical-align:0em\"><\/span><span>c<\/span><span>o<\/span><span>s<\/span><span>\u2220<\/span><span style=\"margin-right:0.07153em\">Z<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:0.72777em;vertical-align:-0.08333em\"><\/span><span>\u2212<\/span><span>0<\/span><span>.<\/span><span>5<\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u90a3\u4e48\u6b64\u65f6H\u7684X\u503c\u5e94\u8be5\u662f\u8fd9\u4e48\u7b97<\/p>\n<p><span><span><span> H . X = c e n t e r X \u2212 A H \u2217 0.5 H.X= centerX &#8211; AH * 0.5 <\/span><span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span style=\"margin-right:0.08125em\">H<\/span><span>.<\/span><span style=\"margin-right:0.07847em\">X<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:0.76666em;vertical-align:-0.08333em\"><\/span><span>c<\/span><span>e<\/span><span>n<\/span><span>t<\/span><span>e<\/span><span style=\"margin-right:0.02778em\">r<\/span><span style=\"margin-right:0.07847em\">X<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2212<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span>A<\/span><span style=\"margin-right:0.08125em\">H<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2217<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:0.64444em;vertical-align:0em\"><\/span><span>0<\/span><span>.<\/span><span>5<\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u5176\u5b9e\u672c\u8d28\u4e0a<\/p>\n<p><span><span><span> H . X = c e n t e r X + A H \u2217 c o s \u2220 Z H.X = centerX + AH * cos\u2220Z <\/span><span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span style=\"margin-right:0.08125em\">H<\/span><span>.<\/span><span style=\"margin-right:0.07847em\">X<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:0.76666em;vertical-align:-0.08333em\"><\/span><span>c<\/span><span>e<\/span><span>n<\/span><span>t<\/span><span>e<\/span><span style=\"margin-right:0.02778em\">r<\/span><span style=\"margin-right:0.07847em\">X<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>+<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span>A<\/span><span style=\"margin-right:0.08125em\">H<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2217<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:0.69224em;vertical-align:0em\"><\/span><span>c<\/span><span>o<\/span><span>s<\/span><span>\u2220<\/span><span style=\"margin-right:0.07153em\">Z<\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u6211\u4eec\u6839\u672c\u4e0d\u9700\u8981\u8003\u8651\u5de6\u53f3\u7684\u95ee\u9898\uff0c\u56e0\u4e3a\u5982\u679c\u5728\u53f3\u8fb9cos\u2220Z\u662f\u6b63\uff0c\u5728\u5de6\u8fb9\u4e3a\u8d1f\u6570\uff0c\u6240\u4ee5\u76f4\u63a5\u52a0\u5c31\u53ef\u4ee5\u3002<\/p>\n<p>\u800c\u6211\u4eec\u9700\u8981\u8003\u8651\u7684\u662f\u4e0a\u4e0b\u95ee\u9898\uff0c\u4e5f\u5c31\u662fY\u7684\u95ee\u9898\u3002\u6bd5\u7adf\u8fd9\u4e2a\u6b63\u8d1f\u662f\u57fa\u4e8eX\u7684\u503c\u7b97\u51fa\u6765\u7684\u3002\u5f53\u6211\u4eec\u8f6c\u6362\u6210\u89d2\u5ea6\u4ee5\u540e\u9700\u8981\u6839\u636e\u6b64\u65f6H\u7684Y\u503c\u662f\u5426\u5927\u4e8ecenterY\u6765\u5206\u522b\u8ba1\u7b97\u3002<\/p>\n<p>\u5f53H\u7684Y\u503c\u5728centerY\u4e4b\u4e0a\uff0c\u4e5f\u5c31\u662fH.Y <\/p>\n<p><span><span><span> H . Y = c e n t e r Y \u2212 A H \u2217 a b s ( s i n \u2220 Z ) H.Y = centerY &#8211; AH * abs( sin\u2220Z) <\/span><span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span style=\"margin-right:0.08125em\">H<\/span><span>.<\/span><span style=\"margin-right:0.22222em\">Y<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:0.76666em;vertical-align:-0.08333em\"><\/span><span>c<\/span><span>e<\/span><span>n<\/span><span>t<\/span><span>e<\/span><span style=\"margin-right:0.02778em\">r<\/span><span style=\"margin-right:0.22222em\">Y<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2212<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span>A<\/span><span style=\"margin-right:0.08125em\">H<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2217<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>a<\/span><span>b<\/span><span>s<\/span><span>(<\/span><span>s<\/span><span>i<\/span><span>n<\/span><span>\u2220<\/span><span style=\"margin-right:0.07153em\">Z<\/span><span>)<\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u53cd\u4e4b<\/p>\n<p><span><span><span> H . Y = c e n t e r Y + A H \u2217 a b s ( s i n \u2220 Z ) H.Y = centerY + AH * abs( sin\u2220Z) <\/span><span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span style=\"margin-right:0.08125em\">H<\/span><span>.<\/span><span style=\"margin-right:0.22222em\">Y<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><span>=<\/span><span style=\"margin-right:0.2777777777777778em\"><\/span><\/span><span><span style=\"height:0.76666em;vertical-align:-0.08333em\"><\/span><span>c<\/span><span>e<\/span><span>n<\/span><span>t<\/span><span>e<\/span><span style=\"margin-right:0.02778em\">r<\/span><span style=\"margin-right:0.22222em\">Y<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>+<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:0.68333em;vertical-align:0em\"><\/span><span>A<\/span><span style=\"margin-right:0.08125em\">H<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><span>\u2217<\/span><span style=\"margin-right:0.2222222222222222em\"><\/span><\/span><span><span style=\"height:1em;vertical-align:-0.25em\"><\/span><span>a<\/span><span>b<\/span><span>s<\/span><span>(<\/span><span>s<\/span><span>i<\/span><span>n<\/span><span>\u2220<\/span><span style=\"margin-right:0.07153em\">Z<\/span><span>)<\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u8fd9\u6837\u7684\u8bdd\u968f\u7740offset\u7684\u589e\u957f\uff0cH\u70b9\u7684\u5750\u6807\u4e5f\u80fd\u591f\u968f\u65f6\u7684\u8ba1\u7b97\u51fa\u6765\u4e86\u3002<\/p>\n<p>\u8bdd\u8bf4\u518d\u591a\u4e5f\u6ca1\u7528\uff0c\u8fd8\u662f\u4ee3\u7801\u66f4\u4e3a\u76f4\u89c2\u3002<\/p>\n<p>\u6839\u636e\u4e0a\u9762\u7684\u63cf\u8ff0\uff0c\u6211\u4eec\u9700\u8981\u7ed9\u7c92\u5b50\u6dfb\u52a0\u4e24\u4e2a\u5c5e\u6027\uff0c\u4e00\u4e2a\u662f\u79fb\u52a8\u8ddd\u79bb\uff0c\u4e00\u4e2a\u662f\u7c92\u5b50\u7684\u89d2\u5ea6<\/p>\n<pre>class&nbsp;Particle(\n&nbsp;&nbsp;&nbsp;&nbsp;...&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;offset:Int,\/\/\u5f53\u524d\u79fb\u52a8\u8ddd\u79bb\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;angle:Double,\/\/\u7c92\u5b50\u89d2\u5ea6\n&nbsp;&nbsp;&nbsp;&nbsp;...\n)\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728\u6dfb\u52a0\u7c92\u5b50\u7684\u5730\u65b9\u4fee\u6539\uff1a<\/p>\n<pre>override&nbsp;fun&nbsp;onSizeChanged(w:&nbsp;Int,&nbsp;h:&nbsp;Int,&nbsp;oldw:&nbsp;Int,&nbsp;oldh:&nbsp;Int)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;...&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;angle=0.0\n&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(i&nbsp;in&nbsp;0..500)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;...&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u53cd\u4f59\u5f26\u51fd\u6570\u53ef\u4ee5\u5f97\u5230\u89d2\u5ea6\u503c\uff0c\u662f\u5f27\u5ea6\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;angle=acos(((pos[0]&nbsp;-&nbsp;centerX)&nbsp;\/&nbsp;280f).toDouble())\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;speed=&nbsp;random.nextInt(10)+5\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particleList.add(\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Particle(nextX,&nbsp;nextY,&nbsp;2f,&nbsp;speed.toFloat(),&nbsp;100,0,angle)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)\n&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;animator.start()\n}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728\u66f4\u65b0\u7c92\u5b50\u52a8\u753b\u7684\u5730\u65b9\u4fee\u6539\uff1a<\/p>\n<pre>private&nbsp;fun&nbsp;updateParticle(value:&nbsp;Float)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;particleList.forEach&nbsp;{particle-&amp;gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if(particle.offset&nbsp;&amp;gt;particle.maxOffset){\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particle.offset=0\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particle.speed=&nbsp;(random.nextInt(10)+5).toFloat()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particle.alpha=&nbsp;((1f&nbsp;-&nbsp;particle.offset&nbsp;\/&nbsp;particle.maxOffset)&nbsp;&nbsp;*&nbsp;225f).toInt()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particle.x&nbsp;=&nbsp;(centerX+&nbsp;cos(particle.angle)&nbsp;*&nbsp;(280f&nbsp;+&nbsp;particle.offset)).toFloat()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;(particle.y&nbsp;&amp;gt;&nbsp;centerY)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particle.y&nbsp;=&nbsp;(sin(particle.angle)&nbsp;*&nbsp;(280f&nbsp;+&nbsp;particle.offset)&nbsp;+&nbsp;centerY).toFloat()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;else&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particle.y&nbsp;=&nbsp;(centerY&nbsp;-&nbsp;sin(particle.angle)&nbsp;*&nbsp;(280f&nbsp;+&nbsp;particle.offset)).toFloat()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particle.offset&nbsp;+=&nbsp;particle.speed.toInt()\n&nbsp;&nbsp;&nbsp;&nbsp;}\n}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6dfb\u52a0\u7c92\u5b50\u7684\u5730\u65b9angle\u662f\u89d2\u5ea6\u503c\uff0c\u7528\u4e86Kotlin\u7684acos\u53cd\u4f59\u5f26\u51fd\u6570\uff0c\u8fd9\u4e2a\u51fd\u6570\u8fd4\u56de\u7684\u662f0-PI\u7684\u5f27\u5ea6\u5236\uff0c0-PI\u7684\u53d6\u503c\u8303\u56f4\u4e5f\u5c31\u610f\u5473\u7740sin\u2220Z\u59cb\u7ec8\u662f\u6b63\u503c\uff0c\u4e0a\u9762\u516c\u5f0f\u4e2d\u7684\u7edd\u5bf9\u503c\u5c31\u4e0d\u9700\u8981\u4e86\u3002<\/p>\n<p>\u66f4\u65b0\u7684\u4ee3\u7801\u5f88\u7b80\u5355\uff0c\u5bf9\u7167\u516c\u5f0f\u4e00\u770b\u4fbf\u77e5\u3002\u6b64\u65f6\u6211\u4eec\u8fd0\u884c\u4e00\u4e0b\uff0c\u6548\u679c\u5c31\u5df2\u7ecf\u5f88\u597d\u4e86\uff0c\u5f88\u63a5\u8fd1\u4e86\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/61161f2f277a1552995c3f35a7de11ad-23.gif\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe24\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe24\" \/><\/p>\n<p>\u73b0\u5728\u611f\u89c9\u662f\u4e0d\u662f\u597d\u591a\u4e86\uff1f\u5c31\u662f\u901f\u5ea6\u6709\u70b9\u5feb\uff0c\u7c92\u5b50\u6709\u70b9\u5c11~\u6ca1\u5173\u7cfb\uff0c\u6211\u4eec\u505a\u4e00\u4e9b\u4f18\u5316\u5de5\u4f5c\uff0c\u6bd4\u5982\u8bf4\uff0c\u7c92\u5b50\u7684\u521d\u59cb\u79fb\u52a8\u8ddd\u79bb\u4e5f\u968f\u673a\u53d6\u4e00\u4e2a\u503c\uff0c\u7c92\u5b50\u7684\u6700\u5927\u8ddd\u79bb\u4e5f\u968f\u673a\u3002\u8fd9\u6837\u4e0b\u6765\uff0c\u6211\u4eec\u7684\u6548\u679c\u5c31\u5341\u5206\u7684\u597d\u4e86<\/p>\n<pre>override&nbsp;fun&nbsp;onSizeChanged(w:&nbsp;Int,&nbsp;h:&nbsp;Int,&nbsp;oldw:&nbsp;Int,&nbsp;oldh:&nbsp;Int)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;super.onSizeChanged(w,&nbsp;h,&nbsp;oldw,&nbsp;oldh)\n&nbsp;&nbsp;&nbsp;&nbsp;centerX&nbsp;=&nbsp;(w&nbsp;\/&nbsp;2).toFloat()\n&nbsp;&nbsp;&nbsp;&nbsp;centerY&nbsp;=&nbsp;(h&nbsp;\/&nbsp;2).toFloat()\n&nbsp;&nbsp;&nbsp;&nbsp;path.addCircle(centerX,&nbsp;centerY,&nbsp;280f,&nbsp;Path.Direction.CCW)\n&nbsp;&nbsp;&nbsp;&nbsp;pathMeasure.setPath(path,&nbsp;false)&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;nextX&nbsp;=&nbsp;0f\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;speed=0f\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;nextY=0f\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;angle=0.0\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;offSet=0\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;maxOffset=0\n&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(i&nbsp;in&nbsp;0..2000)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;pathMeasure.getPosTan(i&nbsp;\/&nbsp;2000f&nbsp;*&nbsp;pathMeasure.length,&nbsp;pos,&nbsp;tan)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;nextX&nbsp;=&nbsp;pos[0]+random.nextInt(6)&nbsp;-&nbsp;3f\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;nextY=&nbsp;&nbsp;pos[1]+random.nextInt(6)&nbsp;-&nbsp;3f\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;angle=acos(((pos[0]&nbsp;-&nbsp;centerX)&nbsp;\/&nbsp;280f).toDouble())\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;speed=&nbsp;random.nextInt(2)&nbsp;+&nbsp;2f\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;offSet&nbsp;=&nbsp;random.nextInt(200)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;maxOffset&nbsp;=&nbsp;random.nextInt(200)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;particleList.add(\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Particle(nextX,&nbsp;nextY,&nbsp;2f,&nbsp;speed,&nbsp;100,offSet.toFloat(),angle,&nbsp;maxOffset.toFloat())\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)\n&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;animator.start()\n}\u590d\u5236\u4ee3\u7801<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5176\u5b9e\u8fd8\u6709\u5f88\u591a\u53ef\u4ee5\u4f18\u5316\u7684\u5730\u65b9\uff0c\u6bd4\u5982\u8bf4\uff0c\u7c92\u5b50\u7684\u6570\u91cf\u62bd\u53d6\u4e3a\u4e00\u4e2a\u5e38\u91cf\uff0c\u4e2d\u95f4\u5706\u7684\u534a\u5f84\u4e5f\u53ef\u4ee5\u5b9a\u4e3a\u4e00\u4e2a\u5c5e\u6027\u503c\u53bb\u624b\u52a8\u8bbe\u7f6e\u7b49\u7b49\u3002\u3002\u4e0d\u8fc7\u8fd9\u4e9b\u90fd\u662f\u5c0f\u610f\u601d\uff0c\u76f8\u4fe1\u5c0f\u4f19\u4f34\u4eec\u4e00\u5b9a\u53ef\u4ee5\u81ea\u5df1\u641e\u5b9a\u7684\u3002\u6211\u5c31\u4e0d\u73ed\u95e8\u5f04\u65a7\u4e86\u3002<\/p>\n<p>\u6700\u540e\u8fd9\u662f\u4f18\u5316\u8fc7\u540e\u7684\u6548\u679c\uff0c\u63a5\u4e0b\u6765\u7684\u4e0e\u56fe\u7247\u7ed3\u5408\uff0c\u5c31\u5e0c\u671b\u5c0f\u4f19\u4f34\u4eec\u81ea\u5df1\u5b9e\u73b0\u4e00\u4e0b\u5566~\u5f88\u7b80\u5355\u7684\u3002\u53ef\u4ee5\u5728\u8bc4\u8bba\u533a\u4ea4\u4f5c\u4e1a\u54e6~<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/61161f2f277a1552995c3f35a7de11ad-24.gif\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe25\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe25\" \/><\/p>\n<p>\u8fd9\u662f\u6211\u7684\u6210\u54c1\u5730\u5740\uff0c\u505a\u4e86\u4e00\u4e9b\u989d\u5916\u7684\u4f18\u5316\uff0c\u6bd4\u5982\u8bf4x\u548cy\u7684\u968f\u673a\u504f\u79fb\u7b49\u3002\u5c0f\u4f19\u4f34\u4eec\u53ef\u4ee5\u624b\u52a8\u53bb\u5b9e\u73b0\u4e00\u4e0b\u6216\u8005\u770b\u6211\u4ee3\u7801\uff0c\u5f53\u7136\u6211\u4ee3\u7801\u53ea\u662f\u4e3a\u4e86\u5b9e\u73b0\u6548\u679c\uff0c\u5e76\u6ca1\u6709\u505a\u66f4\u591a\u7684\u4f18\u5316\uff0c\u4e0d\u8981\u55b7\u6211\u54e6\uff1aDimpleView<\/p>\n<h2>\u9884\u544a<\/h2>\n<p>\u8fd9\u4e00\u6b21\u662f\u81ea\u5b9a\u4e49View\u3002 \u4e0b\u4e00\u6b21\u6211\u5c06\u8981\u5e26\u5927\u5bb6\u5b9e\u73b0\u81ea\u5b9a\u4e49ViewGroup\uff0c\u6548\u679c\u662f\u8fd9\u6837\u7684\uff0c\u662f\u4e0d\u662f\u66f4\u52a0\u70ab\u9177\uff1f\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4e00\u4e2a\u559c\u6b22\u81ea\u5b9a\u4e49View\u548cNDK\u5f00\u53d1\u7684\u5c0f\u55b5\u55b5~<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/052\/61161f2f277a1552995c3f35a7de11ad-25.gif\" style=\"max-width:90%\" title=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe26\" alt=\"\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u63d2\u56fe26\" \/><\/p>\n<blockquote><p>\n  \u76f8\u5173\u514d\u8d39\u5b66\u4e60\u63a8\u8350\uff1a\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u5f00\u53d1\u6559\u7a0b\n<\/p><\/blockquote>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5b9e\u73b0\u6b32\u7f62\u4e0d\u80fd\u7684\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u680f\u76ee\u4eca\u5929\u6559\u5927\u5bb6\u5b9e\u73b0\u7f51\u6613\u4e91\u97f3\u4e50\u5b87\u5b99\u5c18\u57c3\u7279\u6548\uff0c\u624b\u628a\u624b\u6559\u3002 \u524d\u8a00 \u524d\u6bb5\u65f6\u95f4\uff0c\u5973\u670b\u53cb\u7528\u7f51\u6613\u4e91\u97f3\u4e50\u7684\u65f6\u5019\u770b\u5230\u4e00\u4e2a\u5b87\u5b99\u5c18\u57c3\u7279\u6548\uff0c\u8bf4\u5f88\u597d\u770b\uff0c\u60f3\u8981\u8ba9\u6211\u7ed9\u5979\u5f00VIP\u7528\u3002 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\u767b\u5f55\u540e\u590d\u5236 \u73b0\u5728\u6211\u4eec\u53bbActivity\u4e2d\uff0c\u7528Glide\u52a0\u8f7d\u4e00\u5f20\u5706\u5f62\u56fe\u7247\u3002 class&nbsp;DemoActivity&nbsp;:&nbsp;AppCompatActivity()&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;private&nbsp;lateinit&nbsp;var&nbsp;demoBinding:&nbsp;ActivityDemoBinding&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;override&nbsp;fun&nbsp;onCreate(savedInstanceState:&nbsp;Bundle?)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;super.onCreate(savedInstanceState) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;demoBinding&nbsp;=&nbsp;ActivityDemoBinding.inflate(layoutInflater) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;setContentView(demoBinding.root) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;lifecycleScope.launch(Dispatchers.Main)&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;loadImage() &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;} &nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;&nbsp;&nbsp;private&nbsp;suspend&nbsp;fun&nbsp;loadImage()&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;withContext(Dispatchers.IO)&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Glide.with(this@DemoActivity) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.load(R.drawable.ic_music) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.circleCrop() &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.into(object&nbsp;:&nbsp;ImageViewTarget&lt;drawable&gt;(demoBinding.musicAvatar)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;override&nbsp;fun&nbsp;setResource(resource:&nbsp;Drawable?)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;demoBinding.musicAvatar.setImageDrawable(resource) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;} &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;} 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"class_list":["post-33656","post","type-post","status-publish","format-standard","hentry","category-19"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/33656","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=33656"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/33656\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=33656"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=33656"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=33656"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}