Difference between revisions of "Interactive SVG-SMIL animation tutorial"

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Alternative examples:
 
Alternative examples:
 
* http://srufaculty.sru.edu/david.dailey/svg/newstuff/SMIL7g.svg
 
* http://srufaculty.sru.edu/david.dailey/svg/newstuff/SMIL7g.svg
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 +
== Stopping / pausing animation ==
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 +
 +
'''Exemple Pendule'''
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* http://tecfa.unige.ch/guides/svg/ex/smil-dom/pendula.svg
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 +
<source lang="XML" enclose="div">
 +
<?xml version="1.0" ?>
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 +
<svg xmlns="http://www.w3.org/2000/svg" version="1.0"
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    viewBox="0 0 300 200">
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<script>
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  function stop () {
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  document.documentElement.pauseAnimations();
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  }
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  function start () {
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  document.documentElement.unpauseAnimations();
 +
  }
 +
 +
</script>
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<desc>
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  The pendulum code was taken from http://www.treebuilder.de/xul/svg2apng/pendel.svg. The pauseAnimations method is documented in the SVG 1.1 spec: http://www.w3.org/TR/SVG/struct.html#__svg__SVGSVGElement__pauseAnimations
 +
</desc>
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<g>
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<line x1="100" y1="0" x2="100" y2="90" stroke="black"/>
 +
<circle cx="100" cy="90" r="10"/>
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<animateTransform attributeName="transform" type="rotate" values="0,100,0;70,100,0;0,100,0;-70,100,0;0,100,0" keySplines="0,0.5,0.5,1;0.5,0,1,0.5;0,0.5,0.5,1;0.5,0,1,0.5" calcMode="spline" begin="0s" dur="4s" repeatCount="indefinite"/>
 +
</g>
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<g onclick="stop()" transform="translate(150 0)">
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<rect width="50" height="30" rx="10" stroke="black" fill-opacity="0.2"/>
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<text id="t" style="font:16px Arial Black;fill:white;stroke:black" transform="translate(5 20)">STOP</text>
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</g>
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<g onclick="start()" transform="translate(5 0)">
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<rect width="50" height="30" rx="10" stroke="black" fill-opacity="0.2"/>
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<text id="t" style="font:16px Arial Black;fill:white;stroke:black" transform="translate(2 20)">START</text>
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</g>
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 +
</svg>

Revision as of 19:06, 10 February 2014

<pageby nominor="false" comments="false"/>

Draft

1 Introduction

This short tutorial will provide an introduction to adding some interactivity to dynamic SVG, ie. SVG-SMIL animation

Prerequisites:

See also:

  • SVG (Short overview)
  • SVG links (links to various SVG resources)


Alternative reading:

Attention: You must use a recent HTML5 compliant browser (issued 2011 or later), e.g. FireFox, Chrome, Opera or Safari. These examples will not work with Internet Explorer 9.

2 Simple click and mouse-over examples

SVG-SMIL allows to use user events such as a mouse click. Something like Button.click allows to refer to a click event on an SVG element that has id=Button

The following SVG code fragment is part of an HTML5 file:

 <svg style="margin-left:50px;border:1px solid blue" height="300" width="300" 
	 xmlns:xlink="http://www.w3.org/1999/xlink"
	 xmlns="http://www.w3.org/2000/svg">
  
      <g id="Button"
	 transform="translate(100,100)">
	<ellipse stroke-width="2" stroke="none" fill="yellow" ry="1cm" rx="2cm" >
	  <animate fill="freeze" dur="1s" begin="Button.click" from="1cm" to="5cm" attributeName="ry"/>
	  <animate fill="freeze" dur="1s" begin="Button.click" from="2cm" to="10cm" attributeName="rx"/>
	</ellipse>
	<text style="font-family:Arial;font-size:18;" alignment-baseline="middle" x="-1cm">Click me !</text>
      </g>      
    </svg>

Source code:


More examples:

3 Motion animation

Example showing how to start a motion animation:


Alternative examples:

4 Stopping / pausing animation

Exemple Pendule

<source lang="XML" enclose="div"> <?xml version="1.0" ?>

<svg xmlns="http://www.w3.org/2000/svg" version="1.0"

    viewBox="0 0 300 200">

<script>

 function stop () {
  document.documentElement.pauseAnimations();
 }
 function start () {
  document.documentElement.unpauseAnimations();
 }

</script> <desc>

 The pendulum code was taken from http://www.treebuilder.de/xul/svg2apng/pendel.svg. The pauseAnimations method is documented in the SVG 1.1 spec: http://www.w3.org/TR/SVG/struct.html#__svg__SVGSVGElement__pauseAnimations
</desc>

<g> <line x1="100" y1="0" x2="100" y2="90" stroke="black"/> <circle cx="100" cy="90" r="10"/> <animateTransform attributeName="transform" type="rotate" values="0,100,0;70,100,0;0,100,0;-70,100,0;0,100,0" keySplines="0,0.5,0.5,1;0.5,0,1,0.5;0,0.5,0.5,1;0.5,0,1,0.5" calcMode="spline" begin="0s" dur="4s" repeatCount="indefinite"/> </g>

<g onclick="stop()" transform="translate(150 0)"> <rect width="50" height="30" rx="10" stroke="black" fill-opacity="0.2"/> <text id="t" style="font:16px Arial Black;fill:white;stroke:black" transform="translate(5 20)">STOP</text> </g>

<g onclick="start()" transform="translate(5 0)"> <rect width="50" height="30" rx="10" stroke="black" fill-opacity="0.2"/> <text id="t" style="font:16px Arial Black;fill:white;stroke:black" transform="translate(2 20)">START</text> </g>

</svg>