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compute it once

This commit is contained in:
Sébastien Loriot 2022-08-01 14:47:25 +02:00
parent 5d32639dc0
commit 77a50cfd7c
1 changed files with 2 additions and 1 deletions
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3
Intersections_3/include/CGAL/Intersections_3/internal/Tetrahedron_3_Triangle_3_intersection.h
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@ -62,9 +62,10 @@ intersection(const typename K::Tetrahedron_3& tet,
// iteratively clip `tr` with the halfspaces which intersection is `tet`
static constexpr std::array<int8_t, 12> vids = { 1, 2, 3, 0, 3, 2, 0, 1, 3, 1, 0, 2 };
const bool tet_ori_positive = (orientation(tet)==POSITIVE);
for (int pid=0; pid<4; ++pid)
{
Plane_3 pl = orientation(tet)==POSITIVE
Plane_3 pl = tet_ori_positive
? plane(vertex(tet, vids[pid*3]), vertex(tet, vids[pid*3+2]),vertex(tet, vids[pid*3+1]))
: plane(vertex(tet, vids[pid*3]), vertex(tet, vids[pid*3+1]),vertex(tet, vids[pid*3+2]));
CGAL_assertion(oriented_side(pl, vertex(tet,pid))==ON_POSITIVE_SIDE);