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Added stride= to rainbow()

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Revar Desmera 2019-09-24 03:50:09 -07:00
parent a85ea4ecc9
commit ba42270e22
1 changed files with 11 additions and 4 deletions
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15
transforms.scad
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@ -2373,6 +2373,7 @@ module HSV(h,s=1,v=1,a=1) color(HSV(h,s,v),a) children();
// This is useful for debugging lists of paths and such.
// Arguments:
// list = The list of items to iterate through.
// stride = Consecutive colors stride around the color wheel divided into this many parts.
// Side Effects:
// Sets the color to progressive values along the ROYGBIV spectrum for each item.
// Sets `$idx` to the index of the current item in `list` that we want to show.
@ -2382,10 +2383,16 @@ module HSV(h,s=1,v=1,a=1) color(HSV(h,s,v),a) children();
// Example(2D):
// rgn = [circle(d=45,$fn=3), circle(d=75,$fn=4), circle(d=50)];
// rainbow(rgn) stroke($item, closed=true);
module rainbow(list)
for($idx=idx(list),$item=[list[$idx]])
HSV(h=360*$idx/len(list))
children();
module rainbow(list, stride=1)
{
ll = len(list);
huestep = 360 / ll;
hues = [for (i=[0:1:ll-1]) posmod(i*huestep+i*360/stride,360)];
for($idx=idx(list)) {
$item = list[$idx];
HSV(h=hues[$idx]) children();
}
}
// vim: noexpandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap