circle(x, y, radius, [color], [fill]); x、y轴圆心坐标,半径,颜色,是否填充(默认为false||0不填充)如: jc.circle(100,120,50,'rgba(255,0,0,0.5)',true); 1. 2. 3. 第二种写法1 circle(object parameters); 将对象作为参数,如: jc.circle({x:100,y:120,radius:50,color:'#ff0000',fi...
canvas 里使用二次贝塞尔曲线和三次贝塞尔曲线可以用来绘制复杂的图形。 canvas APIquadraticCurveTo(cp1x, cp1y, x, y),用来绘制二次贝塞尔曲线,cp1x,cp1y为控制点,x,y为结束点。 canvas APIbezierCurveTo(cp1x, cp1y, cp2x, cp2y, x, y),用来绘制三次贝塞尔曲线,cp1x,cp1y为控制点一,cp2x,cp2y为控...
setImage之后,相当于将整个CircleSplit中的状态都重置了下,circles数组得重置,两个canvas得重置等。 CircleSplit.prototype.setImage = function (image) { this._resetCanvas(this.sourceCanvas); // clear source canvas this._drawSourceImage(image); // draw source canvas this._resetCanvas(this.targetCanvas...
canvas.stroke() canvas.beginPath() canvas.moveTo(ax, ay) canvas.lineTo(bx, by) canvas.lineTo(cx, cy) canvas.closePath() canvas.fill()
var cbtCanvas; /**绘图对象*/ var cxt; /**绘制的图形列表*/ var shapes=new Array(); var graphkind={'cursor':0,'pen':1,'line':2,'trian':3,'rect':4,'poly':5,'circle':6,'arrow':21,'parallel':41,'trapezoid':42}; //背景图片绘制配置 ...
HTML5 Canvas shape from circle to triangle click to draw circle and rectangle line around a circle Move circle in canvas based on range slider value in javascript bisect the circle? fill a circle with color when clicked on a correspond link using html5 Draw text and circle need a timer whi...
circle.setAttribute("fill", "cyan"); 1. 2. canvas元素 我们可以在<canvas>元素中绘制画布图形。你可以通过设置width与height属性来确定画布尺寸(单位为像素)。 新的画布是空的,意味着它是完全透明的,看起来就像文档中的空白区域一样。 <canvas>标签允许多种不同风格的绘图。要获取真正的绘图接口,首先我们要创...
13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 <body> <canvas id="square"width="500"></canvas> <canvas id="circle"></canvas> <script type="text/javascript"> functionpolygon(c,n,x,y,r,angle,counterclockwise){ ...
The stroke function may be kept to add a border or be omitted for a colored circle only.Just as we created the fillRect method to draw a filled rectangle, we define a fillCircle function to obtain a filled circle.function fillCircle() { var canvas = document.getElementById("canvas2"); ...
let canvas; let ctx; let circles; function Circle(x, y, r, c) { this.x = x; this.y = y; this.r = r; this.c = c; } function init() { canvas = document.getElementById('myCanvas'); ctx = canvas.getContext('2d'); ...