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TA貢獻(xiàn)785條經(jīng)驗(yàn) 獲得超332個(gè)贊
<!DOCTYPE?html>
<html>
<head>
<meta?charset="UTF-8">
<title></title>
</head>
<body>
<canvas?id="canvas"?width="800"?height="800"?style="border:1px?solid?
#aaa;display:block;margin:50px?auto;">當(dāng)瀏覽器不支持canvas，請(qǐng)更換瀏覽器后再試
</canvas>
<script>
//每塊板子的顏色坐標(biāo)
var?data=[
{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},{x:200,y:600}],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"}
]
//canvas函數(shù)
window.onload?=?function(){
var?canvas?=?document.getElementById("canvas");
canvas.width?=?800;
canvas.height?=?800;
var?context?=?canvas.getContext("2d");
//使用context繪制
//循環(huán)遍歷，每次遍歷調(diào)用draw函數(shù)
for(var?i?=?0;?i?<?data.length?;?i++)
draw(data[i],context);//包括了兩個(gè)參數(shù)，第一個(gè)是每塊七巧板的一塊，第二個(gè)是context上下文的環(huán)境
}
function?draw(piece,cxt){
cxt.beginPath();
cxt.moveTo(piece.p[0].x,piece.p[0].y);//移到每個(gè)小塊第一個(gè)頂點(diǎn)的第一個(gè)坐標(biāo)位置
for(var?i?=?1;?i?<?piece.p.length?;?i++)
cxt.lineTo(piece.p[i].x,piece.p[i].y);
cxt.closePath();
cxt.fillStyle?=?piece.color;
cxt.fill();
}
</script>
</body>
</html>這個(gè)是我曾經(jīng)寫的，也是canvas的例子可以給你參考下。
-
語(yǔ)兮解決了 謝謝
-
語(yǔ)兮var tangram=[ {p:[{x:0,y:0},{x:600,y:0},{x:300,y:300}],color:"#CEFE68"}, {p:[{x:0,y:0},{x:300,y:300},{x:0,y:600}],color:"#69BED0"}, {p:[{x:150,y:450},{x:0,y:600},{x:300,y:600}],color:"#FAF61C"}, {p:[{x:300,y:300},{x:150,y:450},{x:450,y:450}],color:"#F13C64"}, {p:[{x:450,y:150},{x:300,y:300},{x:450,y:450}],color:"#F78ECE"}, {p:[{x:600,y:0},{x:450,y:150},{x:600,y:300}],color:"#A795C3"}, {p:[{x:600,y:300},{x:300,y:600},{x:600,y:600}],color:"#F7C928"} ]; window.onload=function(){ var canvas=document.getElementById('canvas'); canvas.width=600; canvas.height=600; var content=canvas.getContext('2d'); for(var i=0;i<tangram.length;i++){ draw(tangram[i],content) } function draw(tangram,content){ content.beginPath(); content.moveTo(tangram.p[0].x,tangram.p[0].y); for(var i=1;i<tangram.p.length;i++){ content.lineTo(tangram.p[i].x,tangram.p[i].y); content.closePath(); content.fillStyle=tangram.color; content.fill(); content.strokeStyle='black'; content.lineWidth=2; content.stroke(); } } };
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