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2 changes: 1 addition & 1 deletion GDMUtils.scad
Original file line number Diff line number Diff line change
Expand Up @@ -2027,7 +2027,7 @@ module extrude_2d_hollow(wall=2, height=50, twist=90, slices=60)


function vector2d_angle(v1,v2) = atan2(v1[1],v1[0]) - atan2(v2[1],v2[0]);
function vector3d_angle(v1,v2) = acos((v1*v2)/(norm(v1)*norm(v2)));
function vector3d_angle(v1,v2) = acos(max(-1,min(1,(v1*v2)/(norm(v1)*norm(v2)))));
function normalize(v) = v/norm(v);


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