{"id":28619,"date":"2024-11-25T10:54:30","date_gmt":"2024-11-25T02:54:30","guid":{"rendered":"https:\/\/fwq.ai\/blog\/28619\/"},"modified":"2024-11-25T10:54:30","modified_gmt":"2024-11-25T02:54:30","slug":"%e5%be%ae%e4%bf%a1%e5%b0%8f%e6%b8%b8%e6%88%8f%e5%9f%ba%e4%ba%8e%e5%be%ae%e4%bf%a1%e5%bc%80%e5%8f%91%e5%b7%a5%e5%85%b7%e5%85%a5%e9%97%a8%e8%ae%b2%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/28619\/","title":{"rendered":"\u5fae\u4fe1\u5c0f\u6e38\u620f\u57fa\u4e8e\u5fae\u4fe1\u5f00\u53d1\u5de5\u5177\u5165\u95e8\u8bb2\u89e3"},"content":{"rendered":"<p>\u6587\u7ae0\u8bb2\u89e3\u7684\u5f88\u7ec6\u81f4\uff0c\u8ba9\u4f60\u5feb\u901f\u4e0a\u624b\uff0c\u9996\u5148\u5b89\u88c5\u5f00\u53d1\u5de5\u5177<strong>\uff0c<\/strong><span>\u524d\u5f80&nbsp;\u5f00\u53d1\u8005\u5de5\u5177\u4e0b\u8f7d\u9875\u9762&nbsp;\uff0c\u6839\u636e\u81ea\u5df1\u7684\u64cd\u4f5c\u7cfb\u7edf\u4e0b\u8f7d\u5bf9\u5e94\u7684\u5b89\u88c5\u5305\u8fdb\u884c\u5b89\u88c5\u3002\u63a5\u4e0b\u6765\u5c31\u53ef\u4ee5\u8fdb\u884c\u5fae\u4fe1\u5c0f\u6e38\u620f\u7684\u5f00\u53d1\u4e86\u3002<\/span><\/p>\n<p><span style=\"color:#515151\"><strong>\u4f60\u7684\u7b2c\u4e00\u4e2a\u5c0f\u6e38\u620f<\/strong><\/span><\/p>\n<p><span style=\"color:#515151\">\u65b0\u5efa\u9879\u76ee\u9009\u62e9\u5c0f\u7a0b\u5e8f\u9879\u76ee\uff0c\u9009\u62e9\u4ee3\u7801\u5b58\u653e\u7684\u786c\u76d8\u8def\u5f84\u3002 \u76ee\u524d\u5c0f\u6e38\u620f\u4e0d\u63d0\u4f9b\u516c\u5f00\u6ce8\u518c\uff0c\u53ef\u70b9\u51fb\u4f53\u9a8c\u5c0f\u6e38\u620f\u4f7f\u7528\u65e0 AppID \u6a21\u5f0f\u3002 \u7ed9\u4f60\u7684\u9879\u76ee\u8d77\u4e00\u4e2a\u597d\u542c\u7684\u540d\u5b57\uff0c\u6700\u540e\uff0c\u52fe\u9009\u201c\u5efa\u7acb\u6e38\u620f\u5feb\u901f\u542f\u52a8\u6a21\u677f\u201d\uff08\u6ce8\u610f\uff1a\u4f60\u8981\u9009\u62e9\u4e00\u4e2a\u7a7a\u7684\u76ee\u5f55\u624d\u4f1a\u6709\u8fd9\u4e2a\u9009\u9879\uff09\uff0c\u70b9\u51fb\u786e\u5b9a\uff0c\u4f60\u5c31\u5f97\u5230\u4e86\u4f60\u7684\u7b2c\u4e00\u4e2a\u5c0f\u6e38\u620f\u4e86\u3002<\/span><\/p>\n<p><span style=\"color:#515151\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/018\/4942346c8f6050157479ecb7101f800c-0.jpg\" title=\"\u5fae\u4fe1\u5c0f\u6e38\u620f\u57fa\u4e8e\u5fae\u4fe1\u5f00\u53d1\u5de5\u5177\u5165\u95e8\u8bb2\u89e3\u63d2\u56fe\" alt=\"\u5fae\u4fe1\u5c0f\u6e38\u620f\u57fa\u4e8e\u5fae\u4fe1\u5f00\u53d1\u5de5\u5177\u5165\u95e8\u8bb2\u89e3\u63d2\u56fe\" \/><\/span><\/p>\n<p>&nbsp;<span>\u70b9\u51fb\u9876\u90e8\u83dc\u5355\u7f16\u8bd1\u5c31\u53ef\u4ee5\u5728 IDE \u9884\u89c8\u4f60\u7684\u7b2c\u4e00\u4e2a\u5c0f\u6e38\u620f\u3002<\/span><\/p>\n<p><span style=\"color:#515151\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/018\/69fa0da2adc53f5f1df272ba1b13b811-1.jpg\" style=\"max-width:90%\" title=\"\u5fae\u4fe1\u5c0f\u6e38\u620f\u57fa\u4e8e\u5fae\u4fe1\u5f00\u53d1\u5de5\u5177\u5165\u95e8\u8bb2\u89e3\u63d2\u56fe1\" alt=\"\u5fae\u4fe1\u5c0f\u6e38\u620f\u57fa\u4e8e\u5fae\u4fe1\u5f00\u53d1\u5de5\u5177\u5165\u95e8\u8bb2\u89e3\u63d2\u56fe1\" \/><\/span><\/p>\n<p><span style=\"color:#515151\"><strong>\u771f\u673a\u9884\u89c8<\/strong><\/span><\/p>\n<p><span style=\"color:#515151\">\u70b9\u51fb\u5de5\u5177\u4e0a\u7684\u7f16\u8bd1\u6309\u94ae\uff0c\u53ef\u4ee5\u5728\u5de5\u5177\u7684\u5de6\u4fa7\u6a21\u62df\u5668\u754c\u9762\u770b\u5230\u8fd9\u4e2a\u5c0f\u6e38\u620f\u7684\u8868\u73b0\u3002\u70b9\u51fb\u9884\u89c8\u6309\u94ae\uff0c\u901a\u8fc7\u5fae\u4fe1\u7684\u626b\u4e00\u626b\u5728\u624b\u673a\u4e0a\u4f53\u9a8c\u4f60\u7684\u7b2c\u4e00\u4e2a\u5c0f\u6e38\u620f\u3002<\/span><\/p>\n<p><span style=\"color:#515151\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/018\/69fa0da2adc53f5f1df272ba1b13b811-2.jpg\" title=\"\u5fae\u4fe1\u5c0f\u6e38\u620f\u57fa\u4e8e\u5fae\u4fe1\u5f00\u53d1\u5de5\u5177\u5165\u95e8\u8bb2\u89e3\u63d2\u56fe2\" alt=\"\u5fae\u4fe1\u5c0f\u6e38\u620f\u57fa\u4e8e\u5fae\u4fe1\u5f00\u53d1\u5de5\u5177\u5165\u95e8\u8bb2\u89e3\u63d2\u56fe2\" \/><\/span><\/p>\n<p><span style=\"color:#515151\"><strong>\u6587\u4ef6\u7ed3\u6784<\/strong><\/span><\/p>\n<p><span style=\"color:#515151\">\u5c0f\u6e38\u620f\u53ea\u6709\u4ee5\u4e0b\u4e24\u4e2a\u5fc5\u8981\u6587\u4ef6\uff1a<\/span><\/p>\n<ul>\n<li>\n<p><span style=\"color:#515151\">game.js \u5c0f\u6e38\u620f\u5165\u53e3\u6587\u4ef6<\/span><\/p>\n<\/li>\n<li>\n<p><span style=\"color:#515151\">game.json \u914d\u7f6e\u6587\u4ef6<\/span><\/p>\n<\/li>\n<\/ul>\n<p><span style=\"color:#515151\"><strong>\u914d\u7f6e<\/strong><\/span><\/p>\n<p><span style=\"color:#515151\">\u5c0f\u6e38\u620f\u5f00\u53d1\u8005\u901a\u8fc7\u5728\u6839\u76ee\u5f55\u7f16\u5199\u4e00\u4e2a game.json \u6587\u4ef6\u8fdb\u884c\u914d\u7f6e\uff0c\u5f00\u53d1\u8005\u5de5\u5177\u548c\u5ba2\u6237\u7aef\u9700\u8981\u8bfb\u53d6\u8fd9\u4e2a\u914d\u7f6e\uff0c\u5b8c\u6210\u76f8\u5173\u754c\u9762\u6e32\u67d3\u548c\u5c5e\u6027\u8bbe\u7f6e\u3002<\/span><\/p>\n<p><span style=\"color:#515151\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/018\/69fa0da2adc53f5f1df272ba1b13b811-3.jpg\" title=\"\u5fae\u4fe1\u5c0f\u6e38\u620f\u57fa\u4e8e\u5fae\u4fe1\u5f00\u53d1\u5de5\u5177\u5165\u95e8\u8bb2\u89e3\u63d2\u56fe3\" alt=\"\u5fae\u4fe1\u5c0f\u6e38\u620f\u57fa\u4e8e\u5fae\u4fe1\u5f00\u53d1\u5de5\u5177\u5165\u95e8\u8bb2\u89e3\u63d2\u56fe3\" \/><\/span><\/p>\n<p>&nbsp;<span><strong>deviceOrientation<\/strong><\/span>&nbsp;<\/p>\n<p><span style=\"color:#515151\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/018\/ecc085d31fe68b18e4e9efc4ad8dafc0-4.jpg\" title=\"\u5fae\u4fe1\u5c0f\u6e38\u620f\u57fa\u4e8e\u5fae\u4fe1\u5f00\u53d1\u5de5\u5177\u5165\u95e8\u8bb2\u89e3\u63d2\u56fe4\" alt=\"\u5fae\u4fe1\u5c0f\u6e38\u620f\u57fa\u4e8e\u5fae\u4fe1\u5f00\u53d1\u5de5\u5177\u5165\u95e8\u8bb2\u89e3\u63d2\u56fe4\" \/><\/span><\/p>\n<p><span style=\"color:#515151\"><strong>\u793a\u4f8b\u914d\u7f6e<\/strong><\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td style=\"vertical-align: baseline\">\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">1<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">2<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">3<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">4<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">5<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">6<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">7<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">8<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">9<\/span><\/span><\/p>\n<\/td>\n<td style=\"vertical-align: baseline\">\n<p><span style=\"color:#515151\"><\/span><\/p>\n<pre>{\n&nbsp;&nbsp;&nbsp;&nbsp;\"deviceOrientation\":&nbsp;\"portrait\",\n&nbsp;&nbsp;&nbsp;&nbsp;\"networkTimeout\":&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\"request\":&nbsp;5000,\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\"connectSocket\":&nbsp;5000,\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\"uploadFile\":&nbsp;5\n000,\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\"downloadFile\":&nbsp;5000\n&nbsp;&nbsp;&nbsp;&nbsp;}\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"color:#515151\"><strong>wx API<\/strong><\/span><\/p>\n<p><span style=\"color:#515151\">\u4f60\u53ea\u80fd\u4f7f\u7528 JavaScript \u6765\u7f16\u5199\u5c0f\u6e38\u620f\u3002\u5c0f\u6e38\u620f\u7684\u8fd0\u884c\u73af\u5883\u662f\u4e00\u4e2a \u7ed1\u5b9a\u4e86\u4e00\u4e9b\u65b9\u6cd5\u7684 JavaScript VM\u3002\u4e0d\u540c\u4e8e\u6d4f\u89c8\u5668\uff0c\u8fd9\u4e2a\u8fd0\u884c\u73af\u5883\u6ca1\u6709 BOM \u548c DOM API\uff0c\u53ea\u6709 wx API\u3002\u63a5\u4e0b\u6765\u6211\u4eec\u5c06\u4ecb\u7ecd\u5982\u4f55\u7528 wx API \u6765\u5b8c\u6210\u521b\u5efa\u753b\u5e03\u3001\u7ed8\u5236\u56fe\u5f62\u3001\u663e\u793a\u56fe\u7247\u4ee5\u53ca\u54cd\u5e94\u7528\u6237\u4ea4\u4e92\u7b49\u57fa\u7840\u529f\u80fd\u3002<\/span><\/p>\n<p><span style=\"color:#515151\"><strong>\u521b\u5efa Canvas<\/strong><\/span><\/p>\n<p><span style=\"color:#515151\">\u8c03\u7528&nbsp;wx.createCanvas()&nbsp;\u63a5\u53e3\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a&nbsp;Canvas&nbsp;\u5bf9\u8c61\u3002<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td style=\"text-align:left;vertical-align:baseline\">\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">1<\/span><\/span><\/p>\n<\/td>\n<td style=\"text-align: left;vertical-align: baseline\">\n<pre>varcanvas&nbsp;=&nbsp;wx.createCanvas()<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"color:#515151\">\u6b64\u65f6\u521b\u5efa\u7684 canvas \u5df2\u7ecf\u663e\u793a\u5728\u4e86\u5c4f\u5e55\u4e0a\uff0c\u4e14\u4e0e\u5c4f\u5e55\u7b49\u5bbd\u7b49\u9ad8\u3002<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td style=\"text-align:left;vertical-align:baseline\">\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">1<\/span><\/span><\/p>\n<\/td>\n<td style=\"text-align: left;vertical-align: baseline\">\n<pre>console.log(canvas.width,&nbsp;canvas.height)<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"color:#515151\">\u4f46\u662f\u7531\u4e8e\u6ca1\u6709\u5728 canvas \u4e0a\u8fdb\u884c\u7ed8\u5236\uff0c\u6240\u4ee5 canvas \u662f\u900f\u660e\u7684\u3002\u4f7f\u7528 2d \u6e32\u67d3\u4e0a\u4e0b\u6587\u7684\u8fdb\u884c\u7b80\u5355\u7684\u7ed8\u5236\uff0c\u53ef\u4ee5\u5728\u5c4f\u5e55\u5de6\u4e0a\u89d2\u770b\u5230\u4e00\u4e2a 100&#215;100 \u7684\u7ea2\u8272\u77e9\u5f62\u3002<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td style=\"text-align:left;vertical-align:baseline\">\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">1<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">2<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">3<\/span><\/span><\/p>\n<\/td>\n<td style=\"text-align: left;vertical-align: baseline\">\n<p><span style=\"color:#515151\"><\/span><\/p>\n<pre>var&nbsp;context&nbsp;=&nbsp;canvas.getContext('2d')\ncontext.fillStyle&nbsp;=&nbsp;'red'\ncontext.fillRect(0,&nbsp;0,&nbsp;100,&nbsp;100)<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"color:#515151\">\u901a\u8fc7&nbsp;Canvas.getContext()&nbsp;\u65b9\u6cd5\u53ef\u4ee5\u83b7\u53d6 2d \u6216 WebGL \u6e32\u67d3\u4e0a\u4e0b\u6587&nbsp;RenderingContext\uff0c\u8c03\u7528\u6e32\u67d3\u4e0a\u4e0b\u6587\u7684\u7ed8\u5236\u65b9\u6cd5\u53ef\u4ee5\u5728 Canvas \u4e0a\u8fdb\u884c\u7ed8\u5236\u3002\u5c0f\u6e38\u620f\u57fa\u672c\u4e0a\u652f\u6301 2d \u548c WebGL 1.0 \u6240\u6709\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u8be6\u60c5\u8bf7\u89c1&nbsp;RenderingContext\u3002\u7531\u4e8e\u4f7f\u7528 WebGL \u7684\u7ed8\u5236\u8fc7\u7a0b\u8f83\u4e3a\u590d\u6742\uff0c\u6240\u4ee5\u672c\u6587\u4e2d\u7684\u793a\u4f8b\u4ee3\u7801\u90fd\u4ee5 2d \u6e32\u67d3\u4e0a\u4e0b\u6587\u7684\u7ed8\u5236\u65b9\u6cd5\u7f16\u5199\u3002<\/span><\/p>\n<p><span style=\"color:#515151\">\u901a\u8fc7\u8bbe\u7f6e width \u548c height \u5c5e\u6027\u53ef\u4ee5\u6539\u53d8 Canvas \u5bf9\u8c61\u7684\u5bbd\u9ad8\uff0c\u4f46\u8fd9\u4e5f\u4f1a\u5bfc\u81f4 Canvas \u5185\u5bb9\u7684\u6e05\u7a7a\u548c\u6e32\u67d3\u4e0a\u4e0b\u6587\u7684\u91cd\u7f6e\u3002<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td style=\"text-align:left;vertical-align:baseline\">\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">1<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">2<\/span><\/span><\/p>\n<\/td>\n<td style=\"text-align: left;vertical-align: baseline\">\n<p><span style=\"color:#515151\"><\/span><\/p>\n<pre>canvas.width&nbsp;=&nbsp;300\ncanvas.height&nbsp;=&nbsp;300<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"color:#515151\"><strong>\u663e\u793a\u56fe\u7247<\/strong><\/span><\/p>\n<p><span style=\"color:#515151\">\u901a\u8fc7&nbsp;wx.createImage()&nbsp;\u63a5\u53e3\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a&nbsp;Image&nbsp;\u5bf9\u8c61\u3002Image \u5bf9\u8c61\u53ef\u4ee5\u52a0\u8f7d\u56fe\u7247\u3002\u5f53 Image \u5bf9\u8c61\u88ab\u7ed8\u5236\u5230 Canvas \u4e0a\u65f6\uff0c\u56fe\u7247\u624d\u4f1a\u663e\u793a\u5728\u5c4f\u5e55\u4e0a\u3002<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td style=\"text-align:left;vertical-align:baseline\">\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">1<\/span><\/span><\/p>\n<\/td>\n<td style=\"text-align: left;vertical-align: baseline\">\n<pre>varimage&nbsp;=&nbsp;wx.createImage()<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"color:#515151\">\u8bbe\u7f6e Image \u5bf9\u8c61\u7684 src \u5c5e\u6027\u53ef\u4ee5\u52a0\u8f7d\u4e00\u5f20\u672c\u5730\u56fe\u7247\u6216\u7f51\u7edc\u56fe\u7247\uff0c\u5f53\u56fe\u7247\u52a0\u8f7d\u5b8c\u6bd5\u65f6\u4f1a\u6267\u884c\u6ce8\u518c\u7684 onload \u56de\u8c03\u51fd\u6570\uff0c\u6b64\u65f6\u53ef\u4ee5\u5c06 Image \u5bf9\u8c61\u7ed8\u5236\u5230 Canvas \u4e0a\u3002<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td style=\"text-align:left;vertical-align:baseline\">\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">1<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">2<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">3<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">4<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">5<\/span><\/span><\/p>\n<\/td>\n<td style=\"text-align: left;vertical-align: baseline\">\n<p><span style=\"color:#515151\"><\/span><\/p>\n<pre>image.onload&nbsp;=&nbsp;function&nbsp;()&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;console.log(image.width,&nbsp;image.height)\n&nbsp;&nbsp;&nbsp;&nbsp;context.drawImage(image,&nbsp;0,&nbsp;0)\n}\nimage.src&nbsp;=&nbsp;'logo.png'<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<strong>\u521b\u5efa\u591a\u4e2a Canvas<\/strong><\/p>\n<p><span style=\"color:#515151\">\u5728\u6574\u4e2a\u5c0f\u6e38\u620f\u8fd0\u884c\u671f\u95f4\uff0c\u9996\u6b21\u8c03\u7528 wx.createCanvas \u63a5\u53e3\u521b\u5efa\u7684\u662f\u4e00\u4e2a\u4e0a\u5c4f Canvas\u3002\u5728\u8fd9\u4e2a canvas \u4e0a\u7ed8\u5236\u7684\u5185\u5bb9\u90fd\u5c06\u663e\u793a\u5728\u5c4f\u5e55\u4e0a\u3002\u800c\u7b2c\u4e8c\u6b21\u3001\u7b2c\u4e09\u6b21\u7b49\u540e\u51e0\u6b21\u8c03\u7528 wx.createCanvas \u521b\u5efa\u7684\u90fd\u4f1a\u662f\u79bb\u5c4f Canvas\u3002\u5728\u79bb\u5c4f Canvas \u4e0a\u7ed8\u5236\u7684\u5185\u5bb9\u4ec5\u4ec5\u53ea\u662f\u7ed8\u5236\u5230\u4e86\u8fd9\u4e2a\u79bb\u5c4f Canvas \u4e0a\uff0c\u5e76\u4e0d\u4f1a\u663e\u793a\u5728\u5c4f\u5e55\u4e0a\u3002<\/span><\/p>\n<p><span style=\"color:#515151\">\u4ee5\u5982\u4e0b\u4ee3\u7801\u4e3a\u4f8b\uff0c\u8fd0\u884c\u540e\u4f1a\u53d1\u73b0\u5c4f\u5e55\u4e0a\u5e76\u6ca1\u6709\u5728 (0, 0) \u7684\u4f4d\u7f6e\u663e\u793a 100&#215;100 \u7684\u7ea2\u8272\u77e9\u5f62\u3002\u56e0\u4e3a\u6211\u4eec\u662f\u5728\u4e00\u4e2a\u79bb\u5c4f\u7684 Canvas \u7ed8\u5236\u7684\u3002<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td style=\"vertical-align: baseline\">\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">1<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">2<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">3<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">4<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">5<\/span><\/span><\/p>\n<\/td>\n<td style=\"vertical-align: baseline\">\n<p><span style=\"color:#515151\"><\/span><\/p>\n<pre>var&nbsp;screenCanvas&nbsp;=&nbsp;wx.createCanvas()\nvar&nbsp;offScreenCanvas&nbsp;=&nbsp;wx.createCanvas()\nvar&nbsp;offContext&nbsp;=&nbsp;offScreenCanvas.getContext('2d')\noffContext.fillStyle&nbsp;=&nbsp;'red'\noffContext.fillRect(0,&nbsp;0,&nbsp;100,&nbsp;100)<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"color:#515151\">\u4e3a\u4e86\u8ba9\u8fd9\u4e2a\u7ea2\u8272\u77e9\u5f62\u663e\u793a\u5728\u5c4f\u5e55\u4e0a\uff0c\u6211\u4eec\u9700\u8981\u628a\u79bb\u5c4f\u7684 offScreenCanvas \u7ed8\u5236\u5230\u4e0a\u5c4f\u7684 screenCanvas \u4e0a\u3002<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td style=\"text-align:left;vertical-align:baseline\">\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">1<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">2<\/span><\/span><\/p>\n<\/td>\n<td style=\"text-align: left;vertical-align: baseline\">\n<p><span style=\"color:#515151\"><\/span><\/p>\n<pre>var&nbsp;screenContext&nbsp;=&nbsp;screenCanvas.getContext('2d')\nscreenContext.drawImage(offScreenCanvas,&nbsp;0,&nbsp;0)<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<strong>\u52a8\u753b<\/strong><\/p>\n<p><span style=\"color:#515151\">\u5728 JavaScript \u4e2d\uff0c\u4e00\u822c\u901a\u8fc7 setInterval\/setTimeout\/requestAnimationFrame \u6765\u5b9e\u73b0\u52a8\u753b\u6548\u679c\u3002\u5c0f\u6e38\u620f\u5bf9\u8fd9\u4e9b API \u63d0\u4f9b\u4e86\u652f\u6301\uff1a<\/span><\/p>\n<ul>\n<li>\n<p><span style=\"color:#515151\">setInterval()<\/span><\/p>\n<\/li>\n<li>\n<p><span style=\"color:#515151\">setTimeout()<\/span><\/p>\n<\/li>\n<li>\n<p><span style=\"color:#515151\">requestAnimationFrame()<\/span><\/p>\n<\/li>\n<li>\n<p><span style=\"color:#515151\">clearInterval()<\/span><\/p>\n<\/li>\n<li>\n<p><span style=\"color:#515151\">clearTimeout()<\/span><\/p>\n<\/li>\n<li>\n<p><span style=\"color:#515151\">cancelAnimationFrame()<\/span><\/p>\n<\/li>\n<\/ul>\n<p><span style=\"color:#515151\">\u53e6\u5916\uff0c\u8fd8\u53ef\u4ee5\u901a\u8fc7&nbsp;wx.setPreferredFramesPerSecond()&nbsp;\u4fee\u6539\u6267\u884c requestAnimationFrame \u56de\u8c03\u51fd\u6570\u7684\u9891\u7387\uff0c\u4ee5\u964d\u4f4e\u6027\u80fd\u6d88\u8017\u3002<\/span><\/p>\n<p><span style=\"color:#515151\"><strong>\u89e6\u6478\u4e8b\u4ef6<\/strong><\/span><\/p>\n<p><span style=\"color:#515151\">\u54cd\u5e94\u7528\u6237\u4e0e\u5c4f\u5e55\u7684\u4ea4\u4e92\u662f\u6e38\u620f\u4e2d\u5fc5\u4e0d\u53ef\u5c11\u7684\u90e8\u5206\uff0c\u5c0f\u6e38\u620f\u53c2\u7167 DOM \u4e2d\u7684 TouchEvent \u63d0\u4f9b\u4e86\u4ee5\u4e0b\u76d1\u542c\u89e6\u6478\u4e8b\u4ef6\u7684 API\uff1a<\/span><\/p>\n<ul>\n<li>\n<p><span style=\"color:#515151\">wx.onTouchStart()<\/span><\/p>\n<\/li>\n<li>\n<p><span style=\"color:#515151\">wx.onTouchMove()<\/span><\/p>\n<\/li>\n<li>\n<p><span style=\"color:#515151\">wx.onTouchEnd()<\/span><\/p>\n<\/li>\n<li>\n<p><span style=\"color:#515151\">wx.onTouchCancel()<\/span><\/p>\n<\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td style=\"vertical-align: baseline\">\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">01<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">02<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">03<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">04<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">05<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">06<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">07<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">08<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">09<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">10<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">11<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">12<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">13<\/span><\/span><\/p>\n<p><span style=\"color:#515151\"><span style=\"color:#afafaf\">14<\/span><\/span><\/p>\n<\/td>\n<td style=\"vertical-align: baseline\">\n<p><span style=\"color:#515151\"><\/span><\/p>\n<pre>wx.onTouchStart(function&nbsp;(e)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;console.log(e.touches)\n})&nbsp;\n\nwx.onTouchMove(function&nbsp;(e)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;console.log(e.touches)\n})\n\nwx.onTouchEnd(function&nbsp;(e)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;console.log(e.touches)\n})\n\nwx.onTouchCancel(function&nbsp;(e)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;console.log(e.touches)<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u76f8\u5173\u6587\u7ae0:<\/p>\n<\/p>\n<p style=\"margin: 0px 0px 1px;padding: 0px;font-weight: 400;font-size: medium;line-height: 1.54;font-family: arial\">\u76f8\u5173\u89c6\u9891\uff1a<\/p>\n<p style=\"margin: 0px 0px 1px;padding: 0px;font-weight: 400;font-size: medium;line-height: 1.54;font-family: 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