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Fixed consistency of plane_from_pointslist()

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Revar Desmera 2019-11-03 18:45:53 -08:00
parent faf12b6e26
commit 25256f78ad
1 changed files with 3 additions and 4 deletions
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7
geometry.scad
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@ -679,13 +679,12 @@ function plane3pt_indexed(points, i1, i2, i3) =
function plane_from_pointslist(points) = function plane_from_pointslist(points) =
let( let(
points = deduplicate(points), points = deduplicate(points),
indices = find_noncollinear_points(points), indices = sort(find_noncollinear_points(points)),
p1 = points[indices[0]], p1 = points[indices[0]],
p2 = points[indices[1]], p2 = points[indices[1]],
p3 = points[indices[2]], p3 = points[indices[2]],
plane = plane3pt(p1,p2,p3), plane = plane3pt(p1,p2,p3)
out = ((plane.x+plane.y+plane.z)<0)? plane3pt(p1,p3,p2) : plane ) plane;
) out;
// Function: plane_normal() // Function: plane_normal()