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Add 2D/3D boxes/AABBs and intersection tests.

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Added support for 2D/3D boxes (or AABBs) and intersection tests between
them and rays/segments.
This commit is contained in:
Mikhail Romanko
2025-02-24 22:56:16 +03:00
parent 67e7582d63
commit cae66889a1
6 changed files with 1020 additions and 123 deletions
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68
test/src/TestRay3f.c
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@@ -86,6 +86,72 @@ BH_UNIT_TEST(Barycentric)
}
BH_UNIT_TEST(RayBox)
{
float start[3], direction[3], bMin[3], bMax[3], r[3];
float time;
bMin[0] =-2.0f; bMin[1] =-2.0f; bMin[2] =-2.0f;
bMax[0] = 3.0f; bMax[1] = 3.0f; bMax[2] = 3.0f;
start[0] = 0.0f; start[1] = 0.0f; start[2] = 0.0f;
direction[0] = 1.0f; direction[1] = 0.0f; direction[2] = 0.0f;
BH_VERIFY(BH_Ray3fIntersectBox3f(start, direction, bMin, bMax, &time, r) == BH_OK);
BH_VERIFY(BH_Box3fContains(bMin, bMax, r) == BH_OK);
start[0] = -4.0f; start[1] = 0.0f; start[2] = 0.0f;
BH_VERIFY(BH_Ray3fIntersectBox3f(start, direction, bMin, bMax, &time, r) == BH_OK);
BH_VERIFY(BH_Box3fContains(bMin, bMax, r) == BH_OK);
start[0] = 4.0f; start[1] = 0.0f; start[2] = 0.0f;
BH_VERIFY(BH_Ray3fIntersectBox3f(start, direction, bMin, bMax, &time, r) != BH_OK);
start[0] = 4.0f; start[1] = 0.0f; start[2] = 0.0f;
direction[0] = -1.0f; direction[1] = 0.0f; direction[2] = 0.0f;
BH_VERIFY(BH_Ray3fIntersectBox3f(start, direction, bMin, bMax, &time, r) == BH_OK);
BH_VERIFY(BH_Box3fContains(bMin, bMax, r) == BH_OK);
start[0] = 4.0f; start[1] = 4.0f; start[2] = 4.0f;
direction[0] = -1.0f; direction[1] = 0.0f; direction[2] = 0.0f;
BH_VERIFY(BH_Ray3fIntersectBox3f(start, direction, bMin, bMax, &time, r) != BH_OK);
return 0;
}
BH_UNIT_TEST(SegmentBox)
{
float start[3], end[3], bMin[3], bMax[3], r[3];
float time;
bMin[0] =-2.0f; bMin[1] =-2.0f; bMin[2] =-2.0f;
bMax[0] = 3.0f; bMax[1] = 3.0f; bMax[2] = 3.0f;
start[0] = 0.0f; start[1] = 0.0f; start[2] = 0.0f;
end[0] = 5.0f; end[1] = 0.0f; end[2] = 0.0f;
BH_VERIFY(BH_Segment3fIntersectBox3f(start, end, bMin, bMax, &time, r) == BH_OK);
BH_VERIFY(BH_Box3fContains(bMin, bMax, r) == BH_OK);
start[0] = -4.0f; start[1] = 0.0f; start[2] = 0.0f;
BH_VERIFY(BH_Segment3fIntersectBox3f(start, end, bMin, bMax, &time, r) == BH_OK);
BH_VERIFY(BH_Box3fContains(bMin, bMax, r) == BH_OK);
start[0] = 4.0f; start[1] = 0.0f; start[2] = 0.0f;
BH_VERIFY(BH_Segment3fIntersectBox3f(start, end, bMin, bMax, &time, r) != BH_OK);
start[0] = 4.0f; start[1] = 0.0f; start[2] = 0.0f;
end[0] = -5.0f; end[1] = 0.0f; end[2] = 0.0f;
BH_VERIFY(BH_Segment3fIntersectBox3f(start, end, bMin, bMax, &time, r) == BH_OK);
BH_VERIFY(BH_Box3fContains(bMin, bMax, r) == BH_OK);
start[0] = 4.0f; start[1] = 4.0f; start[2] = 4.0f;
end[0] = -5.0f; end[1] = 4.0f; end[2] = 0.0f;
BH_VERIFY(BH_Segment3fIntersectBox3f(start, end, bMin, bMax, &time, r) != BH_OK);
return 0;
}
int main(int argc, char **argv)
{
(void)argc;
@@ -94,6 +160,8 @@ int main(int argc, char **argv)
BH_UNIT_ADD(RayIntersectTriangle);
BH_UNIT_ADD(SegmentIntersectTriangle);
BH_UNIT_ADD(Barycentric);
BH_UNIT_ADD(RayBox);
BH_UNIT_ADD(SegmentBox);
return BH_UnitRun();
}