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configurable colors in Prairie/Mountain/Ivory/Freefall/Yendorian stripes

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Zeno Rogue
2024-07-09 21:38:45 +02:00
parent f47f37ffd8
commit f731fa88fb
3 changed files with 50 additions and 18 deletions
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17
graph.cpp
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@@ -140,15 +140,20 @@ ld spina(cell *c, int dir) {
return TAU * dir / c->type;
}
/** @brief used to alternate colors depending on distance to something. In chessboard-patterned geometries, also use a third step */
EX int flip_dark(int f, int a0, int a1) {
if(geosupport_chessboard()) {
/** @brief used to alternate colors depending on distance to something. In chessboard-patterned geometries, automatically a third step.
* In some cases, we want to avoid a number of colors in the table -- set @param subtract to the number of such colors.
*/
EX color_t get_color_auto3(int f, const colortable& ctab, int subtract IS(0)) {
int size = ctab.size() - subtract;
if(size < 1) return 0;
if(geosupport_chessboard() && size == 2) {
f = gmod(f, 3);
return a0 + (a1-a0) * f / 2;
if(f == 1)
return gradient(ctab[0], ctab[1], 0, 1, 2);
return ctab[f/2];
}
else
return (f&1) ? a1 : a0;
return ctab[gmod(f, size)];
}
color_t fc(int ph, color_t col, int z) {