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normalized project_plane and lift_plane to match other transform

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functions.
This commit is contained in:
Adrian Mariano
2021-04-21 22:49:06 -04:00
parent 94abf65857
commit 493ef62826
8 changed files with 158 additions and 140 deletions
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rounding.scad
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@@ -1827,7 +1827,7 @@ function rounded_prism(bottom, top, joint_bot=0, joint_top=0, joint_sides=0, k_b
assert(len(bottom[0])==3 || is_num(height),"Must give height/length with 2d polygon input")
let(
// Determine which points are concave by making bottom 2d if necessary
bot_proj = len(bottom[0])==2 ? bottom : project_plane(bottom, select(bottom,0,2)),
bot_proj = len(bottom[0])==2 ? bottom : project_plane(select(bottom,0,2),bottom),
bottom_sign = polygon_is_clockwise(bot_proj) ? 1 : -1,
concave = [for(i=[0:N-1]) bottom_sign*sign(point_left_of_line2d(select(bot_proj,i+1), select(bot_proj, i-1,i)))>0],
top = is_undef(top) ? path3d(bottom,height/2) :