The L*a*b* color space with a range of ±100 for a* and b* values and a value of 60 for Lightness.
Last active
July 20, 2016 23:31
-
-
Save lucguillemot/71123083b8ec767eec79a4e6bb1224a7 to your computer and use it in GitHub Desktop.
L*a*b* color space
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="//d3js.org/d3.v4.min.js"></script> | |
| </head> | |
| <body> | |
| <div id="color-space"></div> | |
| <script> | |
| var canvas_width = 960, | |
| canvas_height = 500; | |
| var labScaleA = d3.scaleLinear() | |
| .domain([0, canvas_width]) | |
| .range([-100, 100]), | |
| labScaleB = d3.scaleLinear() | |
| .domain([0, canvas_height]) | |
| .range([-100, 100]); | |
| var canvas = d3.select("#color-space") | |
| .append("canvas") | |
| .attr("width", canvas_width) | |
| .attr("height", canvas_height) | |
| .style("width", canvas_width + "px") | |
| .style("height", canvas_height + "px") | |
| .node(), | |
| context = canvas.getContext("2d"), | |
| image = context.createImageData(canvas_width, canvas_height); | |
| var y = -1, | |
| i = -1; | |
| while (++y < canvas_height) { | |
| for (var x = 0, c; x < canvas_width; ++x) { | |
| var a = Math.round(labScaleA(x)), | |
| b = Math.round(labScaleB(y)); | |
| c = d3.lab(60, a, b).rgb(); | |
| image.data[++i] = c.r; | |
| image.data[++i] = c.g; | |
| image.data[++i] = c.b; | |
| image.data[++i] = 255; | |
| } | |
| } | |
| context.putImageData(image, 0, 0); | |
| </script> | |
| </body> | |
| </html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment