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75 lines
1.6 KiB
75 lines
1.6 KiB
6 years ago
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<title>JavaScript <=> PaperScript example</title>
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<code mode="text/html">
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<!DOCTYPE html>
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<html>
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<head>
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<script type="text/javascript" src="paper.js"></script>
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<script type="text/paperscript" canvas="canvas">
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var xstart = Math.random();
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var ystart = Math.random();
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var scale = 500;
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var num_steps = 10;
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var num_lines = 5;
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var lines = [];
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for(var i=0; i<num_lines; i++) {
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var x = xstart + i*0.0001;
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var y = ystart + i*0.0001;
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var path = new Path({strokeWidth: 1, strokeColor: 'black'});
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for(var s=0; s<num_steps; s++) {
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x = (4*x*(1-x)) % 1;
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y = (x+y) % 1;
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var p = new Point(x*scale, y*scale);
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path.add(p);
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//console.log(p);
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}
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lines.push(path);
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}
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globals.get_svg = function() {
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return project.exportSVG({asString: true});
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}
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</script>
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<script type="text/javascript">
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//document.addEventListener('DOMContentLoaded', function() {
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window.globals = {}
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window.onload = function() {
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/*
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draw();
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document.getElementById('redraw').addEventListener('click', function() {
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draw();
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});
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*/
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paper.install(window);
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console.log(window.globals);
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document.getElementById('download-svg').addEventListener('click', function() {
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var svgdata = 'data:image/svg+xml;utf8,' + encodeURIComponent(window.globals.get_svg());
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var a = document.createElement('a');
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a.download = 'export.svg';
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a.href = svgdata;
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document.body.appendChild(a);
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a.click();
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});
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}
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</script>
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</head>
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<body>
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<button id="download-svg">download svg</button>
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<canvas id="canvas" style="width: 500px; height: 500px;" resize></canvas>
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</body>
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</html>
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