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SVG Path Animation or help convert Path to Bezier.

Warning: Please note

This thread was started before GSAP 3 was released. Some information, especially the syntax, may be out of date for GSAP 3. Please see the GSAP 3 migration guide and release notes for more information about how to update the code to GSAP 3's syntax. 

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Hi,

is there any way to animate along SVG paths already? If not, can you recommend any tool that helps me get the bezier data from SVG, illustrator (or other) paths, so I can use them with GSAP?

Thanks in advance

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There is nothing in the platform currently that supports parsing data directly from an SVG.

 

A tool that has caught my interest is an Adobe Illustrator extension called DrawScript.

 

What it does is provide a variety of output formats for Bezier curves from AI.

 

Below is a screenshot showing the curve as JSON data:

Screen Shot 2013-08-08 at 10.55.32 AM.png

 

The "JavaScript Canvas" output looks like this:

 

fillStyle="rgb(255,255,255)";
lineStyle="rgb(0,0,0)";
lineWidth=1;
beginPath();
moveTo(41,43);
bezierCurveTo(41,43,129,-13,209,43);
bezierCurveTo(289,99,384,114,423,71);
fill();
stroke();
I haven't tried using this data myself yet, but my guess is that it would be entirely possible to parse that data to feed into a canvas drawing API and also pass it to a Bezier tween.
 

 

 

 

 

 

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Hi again,

I tried it out, I even got close, but I cant quite find the right way. (JS is mostly for string conversion). I tried "quadratic", as this seemed to be the right one for the export values from drawscript, but with "soft" I came closest. Any help?

<DOCTYPE html>
<html>
<head>

	<script src="http://cdnjs.cloudflare.com/ajax/libs/gsap/latest/TweenMax.min.js"></script>
	<script src="pathAni.js"></script>
	<!--<script src="bezierStringProcessor.js"></script>-->

</head>

<body style="margin:0px">
	
<svg version="1.1" id="Ebene_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
	 width="841.89px" height="595.28px" viewBox="0 0 841.89 595.28" enable-background="new 0 0 841.89 595.28" xml:space="preserve">
<path fill="#FFFFFF" stroke="#000000" stroke-miterlimit="10" d="M10,10c30.968,30.323,59.354,120,121.29,73.548
	s105.807-20,117.419,18.064s124.516-5.162,151.613-8.387s147.743,49.033,70.323,103.226S216.451,330,197.742,261.613
	c-18.709-68.387,1.936-114.838-69.677-84.516S80.323,392.023,23.548,288.109"/>
</svg>

<div id="main" style="float:left; position:relative; width:20px; height:20px; background-color:red;"></div>

</body>
</html>	
var e;
var animate;

var bezierString        = "bezierCurveTo(60,30,89,120,151,73);bezierCurveTo(213,27,257,53,268,91);bezierCurveTo(280,129,393,86,420,83);bezierCurveTo(447,80,568,132,490,186);bezierCurveTo(413,240,236,320,217,251);bezierCurveTo(199,183,219,136,148,167);bezierCurveTo(76,197,100,382,43,278);";
var mainSubstring       = bezierString.split("bezierCurveTo");
var pointAmount 	= mainSubstring.length-1;
var valueSubstring      = [];
var valueSetArray       = [];
var finalTweenMaxObject = [];

for(var i = 0; i < mainSubstring.length; i++){	
	valueSubstring[i] = ( mainSubstring[i].split( "(" ))[1];
};

for(var j = 1; j < valueSubstring.length; j++){
	valueSetArray[j-1] = valueSubstring[j].substring( 0, valueSubstring[j].indexOf( ")" ));
};

for(var k = 0; k < pointAmount; k++){
	finalTweenMaxObject.push({ x: parseInt( valueSetArray[k].split(",")[0] ), y: parseInt( valueSetArray[k].split(",")[1] ) });	
	finalTweenMaxObject.push({ x: parseInt( valueSetArray[k].split(",")[2] ), y: parseInt( valueSetArray[k].split(",")[3] ) });
	finalTweenMaxObject.push({ x: parseInt( valueSetArray[k].split(",")[4] ), y: parseInt( valueSetArray[k].split(",")[5] ) });
};

//console.log(finalTweenMaxObject);

window.onload = function(){
	
	TweenMax.ticker.fps(60);
	e = document.getElementById("main");	
	window.animate = function(){
		TweenMax.to(window.e, 10, {bezier:{type:"soft", values:finalTweenMaxObject, autoRotate:true}, repeat:-1, ease:Power1.easeInOut});
	};

	window.animate();
};

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