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115 lines
2.9 KiB
115 lines
2.9 KiB
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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 xstart = 0.976119763841021; |
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//var ystart = 0.06095897568349018; |
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//var xstart = 0.981709002734148; |
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//var ystart = 0.7482912451397156; |
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//var xstart = 0.01408766142248663 |
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//var ystart = 0.5826524694499656; |
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var scale = 500; |
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var num_steps = 7; |
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var fac = 0.0005; |
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var num_steps = 5; |
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var fac = 0.05; |
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var lines = []; |
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for(var i=0; i<2; i++) { |
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var x = xstart + i*fac; |
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var y = ystart + i*fac; |
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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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lines[0].strokeWidth = 5; |
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lines[1].strokeWidth = 0; |
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//lines[1].fullySelected = true; |
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for(var i=0; i<num_steps-1; i++) { |
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var o0start = lines[0].getOffsetOf(lines[0].segments[i].point); |
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var o0end = lines[0].getOffsetOf(lines[0].segments[i+1].point); |
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var o1start = lines[1].getOffsetOf(lines[1].segments[i].point); |
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var o1end = lines[1].getOffsetOf(lines[1].segments[i+1].point); |
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var num_steps2_0 = (o0end - o0start) / 7; |
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var num_steps2_1 = (o1end - o1start) / 7; |
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var num_steps2 = Math.min(num_steps2_0, num_steps2_1); |
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console.log(num_steps2); |
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for(var j=0; j<num_steps2; j++) { |
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var p0 = lines[0].getPointAt(o0start + (o0end-o0start) * (j/num_steps2)); |
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var p1 = lines[1].getPointAt(o1start + (o1end-o1start) * (j/num_steps2)); |
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var path = new Path.Line({ |
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from: p0, to: p1, |
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strokeWidth: 2, |
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strokeColor: 'black' |
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}); |
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if(path.length < 5) { |
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path.removeSegments(); |
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delete path; |
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} |
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} |
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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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console.log("start: ", xstart, ystart); |
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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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