ManualTests/svg-filter-animation.svg

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

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  Copyright (C) 2010 University of Szeged
  Copyright (C) 2010 Zoltan Herczeg
  Copyright (C) 2010 Gabor Loki
  All rights reserved.

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  modification, are permitted provided that the following conditions
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<svg width="100%" height="100%" version="1.1" xmlns="http://www.w3.org/2000/svg">
<rect x="0%" y="0%" width="100%" height="100%" fill="black" />

<defs>
<filter id="filt" filterUnits="objectBoundingBox" x="0" y="0" width="100%" height="100%">
    <feTurbulence baseFrequency="0.03" numOctaves="4" seed="67" result="turb"/>
    <feGaussianBlur in="SourceGraphic" primitiveUnits="objectBoundingBox" stdDeviation="1" result="blur"/>
    <feComposite in="turb" in2="blur" operator="arithmetic" k2="0.3" k3="1" result="comp"/>
    <feDiffuseLighting in="comp" primitiveUnits="objectBoundingBox" diffuseConstant="1" lighting-color="white" surfaceScale="10" result="light" >
        <feSpotLight id="light" x="0" y="300" z="200" pointsAtX="-200" pointsAtY="100" pointsAtZ="0" limitingConeAngle="90" specularExponent="20" />
    </feDiffuseLighting>
    <feSpecularLighting in="comp" primitiveUnits="objectBoundingBox" diffuseConstant="1" lighting-color="#A66102" surfaceScale="10" result="ambient" >
        <feDistantLight azimuth="0" elevation="90" />
    </feSpecularLighting>
    <feComposite in="light" in2="ambient" operator="arithmetic" k2="1.2" k3=".8"/>
</filter>
</defs>

<g filter="url(#filt)" fill="white" stroke="black" onclick="start()">
    <rect x="0" y="0" width="400" height="5" />
    <rect x="0" y="0" width="5" height="200" />
    <rect x="0" y="195" width="400" height="5" />
    <rect x="395" y="0" width="5" height="200" />
    <text font-size="150" font-weight="bold" x="40" y="150">SVG</text>
</g>

<text id="fps" x="150" y="240" font-size="20" fill="white" stroke="white">afps:</text>
<text x="30" y="265" font-size="20" font-weight="bold" fill="white" stroke="white">click on the image to start the animation</text>

<script>
<![CDATA[
var light_x = document.getElementById('light').x;
var light_y = document.getElementById('light').y;
var light_pointsAtX = document.getElementById('light').pointsAtX;
var light_pointsAtY = document.getElementById('light').pointsAtY;
var fps = document.getElementById('fps');

var round = Math.round

var startDate = 0;
var frameCounter = 0;
var phase = 0;
function anim() {
    switch(phase) {
    case 0:
        light_pointsAtX.baseVal += 10;
        if (light_pointsAtX.baseVal >= 380)
            ++phase;
        break;
    case 1:
        light_x.baseVal += 10;
        light_pointsAtX.baseVal -= 10;
        if (light_x.baseVal >= 450) {
            ++phase;
            waitCounter = 0;
        }
        break;
    case 2:
        light_y.baseVal -= 5;
        if (light_y.baseVal <= -100)
            ++phase;
        break;
    case 3:
        light_pointsAtX.baseVal += 10;
        if (light_pointsAtX.baseVal >= 450) {
            light_x.baseVal = 0;
            light_pointsAtX.baseVal = -200;
            light_y.baseVal = 300;
            light_pointsAtY.baseVal = 100;
            phase = 0;
        }
        break;
    }

    frameCounter++;
    fps.textContent = "afps: " +(round(frameCounter * 100000 / (new Date() - startDate)) / 100);
}

function start() {
    if (!startDate) {
        startDate = new Date();
        setInterval(anim,1);
    }
}

//]]>
</script>

</svg>