canvas-tangram.html_html/css_WEB-ITnose

             Document                      var tangram = [            {p:[{x:0,y:0},{x:800,y:0},{x:400,y:400}],color:"red"},            {p:[{x:0,y:0},{x:400,y:400},{x:0,y:800}],color:"blue"},            {p:[{x:800,y:0},{x:800,y:400},{x:600,y:600},{x:600,y:200}],color:"yellow"},            {p:[{x:600,y:200},{x:600,y:600},{x:400,y:400}],color:"green"},            {p:[{x:400,y:400},{x:600,y:600},{x:400,y:800},{x:200,y:600}],color:"pink"},            {p:[{x:200,y:600},{x:0,y:800},{x:400,y:800}],color:"orange"},            {p:[{x:800,y:400},{x:800,y:800},{x:400,y:800}],color:"purple"}        ];        function draw(piece,cxt){            cxt.beginPath();            cxt.moveTo(piece.p[0].x , piece.p[0].y);            for(var i=1;i   /*  总结 绘制七巧板  主要运用的js的for循环的巧妙  1.定义路径 trangram  2.第一层for，循环trangram[i]  3.函数draw,第二层for，循环取出绘制路径 trangram.p[i].x */   

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