svg线性渐变
我在html中编译svg线性，不起作用，不能这样用？？还是只能保存svg文件，用浏览器打开
onlyone
2015-11-03
1 回答
给你源码对照一下
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
html,body{
margin: 0;
padding: 0;
width: 100%;
height: 100%;
background: #001122;
line-height: 0;
font-size: 0;
}
</style>
</head>
<body>
<svg width="100%" height="100%"
viewBox="-400 -300 800 600"
preserveAspectRatio="xMidYMid slice">
<defs>
<polygon id="start" points="0 -10 2 -2 10 0 2 2 0 10 -2 2 -10 0 -2 -2"
fill="white">
</polygon>
</defs>
<g id="real">
<g id="star-group"></g>
<g id="moon-group">
<mask id="moon-mask" >
<circle cx="-250" cy="-150" r="100" fill="white"></circle>
<circle cx="-200" cy="-180" r="100" fill="black"></circle>
</mask>
<circle cx="-250" cy="-150" r="100" fill="yellow" mask="url(#moon-mask)"></circle>
</g>
<g id="light-tower" transform="translate(250,0)">
<defs>
<linearGradient id="tower" x1="0" y1="0" x2="1" y2="0">
<stop offset="0" stop-color="#999"></stop>
<stop offset="1" stop-color="#333"></stop>
</linearGradient>
<radialGradient id="light" cx="0.5" cy="0.5" r="0.5">
<stop offset="0" stop-color="rgba(255,255,255,.8)"></stop>
<stop offset="1" stop-color="rgba(255,255,255,0)"></stop>
</radialGradient>
<clipPath id="light-clip">
<polygon points="0 0 -400 -15 -300 15" fill="rgba(255,0,0,0.5)">
<animateTransform
attributeName="transform"
attributeType="XML"
type="rotate"
form="0"
to="360"
dur="10s"
repeatCount="indefinite">
</animateTransform>
</polygon>
<circle cx="0" cy="0" r="4"></circle>
</clipPath>
</defs>
<polygon points="0 0 5 50 -5 50" fill="url(#tower)"></polygon>
<ellipse cx="0" cy="0" rx="300" ry="100"
fill="url(#light)"
clip-path="url(#light-clip)">
</ellipse>
</g>
</g>
<g id="reflact" transform="translate(0,50)" mask="url(#fadeing)" >
<defs>
<linearGradient id="fade" x1="0" y1="0" x2="0" y2="1">
<stop offset="0" stop-color="rgba(255,255,255,.3)"></stop>
<stop offset="1" stop-color="rgba(255,255,255,0)"></stop>
</linearGradient>
<mask id="fadeing">
<rect x="-400" y="0" width="800" height="300" fill="url(#fade)"></rect>
</mask>
</defs>
<use xlink:href="#real" transform="scale(1,-1) translate(0 -50)"></use>
</g>
<line x1="-400" y1="50" x2="400" y2="50" stroke="white"></line>
</svg>
<script>
var SVG_NS="http://www.w3.org/2000/svg",
XLINK_NS="http://www.w3.org/1999/xlink";
var paper = document.querySelector('svg');
renderStar();
function use(origin){
var _use = document.createElementNS(SVG_NS,'use');
_use.setAttributeNS(XLINK_NS,'xlink:href','#'+origin.id);
return _use;
};
function random (min,max){
return min + (max-min) * Math.random();
};
function renderStar(){
var starRef = document.getElementById('start'),//星星原型
starGoup = document.getElementById('star-group'),//星星分级
starCount = 500;//星星个数
while (starCount--){
var star = use(starRef);
star.setAttribute('opacity',random(0.1,0.4));
star.setAttribute('transform',
'translate(' + random(-400 ,400) + ',' + random(-300,50) + ')' +
'scale(' + random(0.1,0.6) + ')'
);
starGoup.appendChild(star);
}
}
</script>
</body>
</html>
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