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https://github.com/BelfrySCAD/BOSL2.git
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50 lines
1.3 KiB
OpenSCAD
50 lines
1.3 KiB
OpenSCAD
include <../std.scad>
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module test_hsl() {
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for (h = [0:30:360]) {
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for (s = [0:0.2:1]) {
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for (l = [0:0.2:1]) {
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c = (1 - abs(2*l-1)) * s;
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x = c * (1 - abs(((h/60)%2)-1));
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m = l - c/2;
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rgb = [m,m,m] + (
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h<= 60? [c,x,0] :
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h<=120? [x,c,0] :
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h<=180? [0,c,x] :
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h<=240? [0,x,c] :
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h<=300? [x,0,c] :
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[c,0,x]
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);
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assert_approx(hsl(h,s,l), rgb, format("h={}, s={}, l={}", [h,s,l]));
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}
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}
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}
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}
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test_hsl();
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module test_hsv() {
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for (h = [0:30:360]) {
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for (s = [0:0.2:1]) {
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for (v = [0:0.2:1]) {
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c = v * s;
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x = c * (1 - abs(((h/60)%2)-1));
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m = v - c;
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rgb = [m,m,m] + (
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h<= 60? [c,x,0] :
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h<=120? [x,c,0] :
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h<=180? [0,c,x] :
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h<=240? [0,x,c] :
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h<=300? [x,0,c] :
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[c,0,x]
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);
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assert_approx(hsv(h,s,v), rgb, format("h={}, s={}, v={}", [h,s,v]));
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}
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}
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}
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}
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test_hsv();
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// vim: expandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap
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