我有下列蓝色线条里(贝塞尔曲线)每一个控制点的(x,y)和angle值(弧线),目前图片只能随着一条曲线而扭曲,
var sliceCount=0;
left = parseInt(left * 4)
top = parseInt(top * 4)
var calcleft =0
var calctop = 0
for(var x=left;x<points.length;x++){
var p = points[x]
// //(p.angle-PI/2))*Math.PI/180
// ctx.rotate(p.angle - PI/2);
ctx.translate(p.x, p.y);
ctx.rotate(p.angle*Math.PI/180)
// draw multiple times to fill gaps on outside of rope slices
ctx.drawImage(img,sliceCount,0,1,img.height,0,0,1,img.height)
ctx.drawImage(img,sliceCount,0,1,img.height,0,0,1,img.height)
ctx.drawImage(img,sliceCount,0,1,img.height,0,0,1,img.height)
ctx.setTransform(1,0,0,1,0,0);
++sliceCount;
我的问题是,如何让图片随着4边的控制点而扭曲呢,角度也要符合?