生成的七巧板出现了问题,求解!

来源:2-2 绘制直线、多边形和七巧板

GarinZhang

2015-08-07 21:21

var tangram=[
  		{p:[{x:0,y:0},{x:800,y:0},{x:400,y:400}],color:"#caff67"},
  		{p:[{x:0,y:0},{x:400,y:400},{x:0,y:800}],color:"#67becf"},
  		{p:[{x:800,y:0},{x:800,y:400},{x:600,y:600},{x:600,y:200}],color:"#ef3d61"},
  		{p:[{x:600,y:200},{x:600,y:600},{x:400,y:400}],color:"#f9f51a"},
  		{p:[{x:400,y:400},{x:600,y:600},{x:400,y:800}],color:"#a594c0"},
  		{p:[{x:200,y:600},{x:400,y:800},{x:0,y:800}],color:"#fa8ecc"},
  		{p:[{x:800,y:400},{x:800,y:800},{x:400,y:800}],color:"#f6ca29"},
		];
		window.onload=function(){
			var canvas = document.getElementById("canvas");
			var context=canvas.getContext("2d");
			canvas.width=800;
			canvas.height=800;
			for(var i=0;i<tangram.length;i++){
				draw(tangram[i],context)
			}
		};
		function draw(piece,ctx){
			ctx.beginPath();
			ctx.moveTo(piece.p[0].x,piece.p[0].y);
			for(var i=1; i<piece.p.length;i++){
				ctx.lineTo(piece.p[i].x,piece.p[i].y);
			};
			ctx.closePath();
			ctx.fillStyle=piece.color;
			ctx.fill();
		}

http://img.mukewang.com/55c4b0e5000111c506100581.jpg

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  • Fankeke
    2015-08-18 11:29:10
    已采纳

    你第五个p少了坐标:{x:200,y:600}http://img.mukewang.com/55d2a66b0001721706740422.jpg

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