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log system of tension of the canvas for painting, mounted on a chassis in the wood. 来自 掌桥科研 喜欢 0 阅读量: 11 申请(专利)号: IT2006TO00003U 申请日期: 2006-01-05 公开/公告号: ITTO20060003U1 公开/公告日期: 2007-07-06 申请(专利权)人: PANETTA FILIPPO ...
{sun.src='https://mdn.mozillademos.org/files/1456/Canvas_sun.png'moon.src='https://mdn.mozillademos.org/files/1443/Canvas_moon.png'earth.src='https://mdn.mozillademos.org/files/1429/Canvas_earth.png'console.log('init')window.requestAnimationFrame(draw)//刷新}functiondraw(){console.log(...
Alternatively, we could have created our event handler using a function(e){…} defintion (rather than an (e) => {…} arrow expression) in which case the this variable will point to the window: function closeWindow(e){ console.log("now closing window:", this) this.close() } Events fo...
107// maxWidth 可选。允许的最大文本宽度,以像素计。108canvasId.fillText(char,0,(canvasH+fs)/2.5,canvasW/num);109110// 返回之前保存过的路径状态和属性111ctx.restore();112113str+=char;114115}116117// console.log(str);118returnstr;119120}121122/**...
w number 是 0 指定矩形的宽度。 h number 是 0 指定矩形的高度。 示例: // xxx.ets @Entry @Component struct StrokeRect { private settings: RenderingContextSettings = new RenderingContextSettings(true) private context: CanvasRenderingContext2D = new CanvasRenderingContext2D(this.settings) ...
log(v4.x, v4.y, v4.z, v4.w); // -4 5 20, 40 v1.bow(0, 0); // draw an arrow with the vector dimension from the point (0, 0) v2.bow(0, 0); // same for the 2D vector // cannot display a 3D vector (for now...) v2.mag; // the magnitude (length) of the...