Another example of HCL interpolation, except using interpolateHclLong to choose the longer path when interpolating between hues greater than 180° apart.
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HCL Interpolation II
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| license: gpl-3.0 |
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| .DS_Store | |
| node_modules | |
| npm-debug.log |
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| import { | |
| color, | |
| rgb, | |
| hcl, | |
| interpolateRgb, | |
| interpolateHcl, | |
| interpolateHclLong | |
| } from "d3-color"; | |
| import { | |
| timer | |
| } from "d3-timer"; | |
| export { | |
| color, | |
| rgb, | |
| hcl, | |
| interpolateRgb, | |
| interpolateHcl, | |
| interpolateHclLong, | |
| timer | |
| }; |
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| !function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t(e.d3={})}(this,function(e){"use strict";function t(e){e=null==e?Date.now():+e;var t=k;for(k=w;k;)e>=k.time&&(k.flush=k.callback(e-k.time,e)),k=k.next;k=t,e=1/0;for(var s,n=w;n;)n.flush?n=s?s.next=n.next:w=n.next:(n.time<e&&(e=n.time),n=(s=n).next);return y=s,e}function s(){N=v=0,M=1/0,n(t())}function n(e){if(!N){var t=e-Date.now();t>24?M>e&&(v&&clearTimeout(v),v=setTimeout(s,t),M=e):(v&&(v=clearTimeout(v),M=1/0),N=requestAnimationFrame(s))}}function r(e,t){this.callback=e,this.time=t,this.flush=!1,this.next=null}function i(e,t,s){s=null==s?Date.now():+s,null!=t&&(s+=+t);var i=new r(e,s);y?y.next=i:w=i,y=i,n(s)}function a(e,t,s){this.h=+e,this.c=+t,this.l=+s}function o(){}function l(e,t,s){this.l=+e,this.a=+t,this.b=+s}function h(e){return 255*(.0031308>=e?12.92*e:1.055*Math.pow(e,1/2.4)-.055)}function 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s=e.r,n=e.g,r=e.b,i=t.r-s,a=t.g-n,o=t.b-r;return function(e){return c(Math.round(s+i*e),Math.round(n+a*e),Math.round(r+o*e))}};e.color=B,e.rgb=E,e.hcl=O,e.interpolateRgb=W,e.interpolateHcl=V,e.interpolateHclLong=Q,e.timer=i}); |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <canvas width="960" height="1" style="width:960px;height:500px;"></canvas> | |
| <script src="d3.min.js"></script> | |
| <script> | |
| var canvas = document.querySelector("canvas"), | |
| width = canvas.width, | |
| context = canvas.getContext("2d"), | |
| image = context.createImageData(width, 1); | |
| d3.timer(function(elapsed) { | |
| var hue = elapsed * .1, | |
| interpolate = d3.interpolateHclLong(d3.hcl(hue, 50, 95), d3.hcl(hue + 360, 50, 25)); | |
| for (var i = 0, j = -1, c; i < width; ++i) { | |
| c = d3.rgb(interpolate(i / (width - 1))); | |
| image.data[++j] = c.r; | |
| image.data[++j] = c.g; | |
| image.data[++j] = c.b; | |
| image.data[++j] = 255; | |
| } | |
| context.putImageData(image, 0, 0); | |
| }); | |
| </script> |
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| { | |
| "scripts": { | |
| "build": "d3-bundler -- d3.js | uglifyjs -c -m -o d3.min.js" | |
| }, | |
| "dependencies": { | |
| "uglify-js": "2" | |
| }, | |
| "devDependencies": { | |
| "d3-bundler": "~0.2.5", | |
| "d3-color": "~0.1.0", | |
| "d3-timer": "~0.0.1" | |
| } | |
| } |
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