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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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104
test/src/TestBox3f.c Normal file
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#include <BH/Math.h>
#include <BH/Unit.h>
#define ACCEPTABLE_DELTA 0.0001f
BH_UNIT_TEST(Union)
{
float aMin[3], aMax[3], bMin[3], bMax[3], rMin[3], rMax[3];
aMin[0] = 1.0f; aMin[1] = 2.0f; aMin[2] = 3.0f;
aMax[0] = 5.0f; aMax[1] = 5.0f; aMax[2] = 5.0f;
bMin[0] = 0.0f; bMin[1] = 0.0f; bMin[2] = 0.0f;
bMax[0] = 4.0f; bMax[1] = 4.0f; bMax[2] = 4.0f;
BH_Box3fUnion(aMin, aMax, bMin, bMax, rMin, rMax);
BH_VERIFY_DELTA(rMin[0], 0.0000f, ACCEPTABLE_DELTA);
BH_VERIFY_DELTA(rMin[1], 0.0000f, ACCEPTABLE_DELTA);
BH_VERIFY_DELTA(rMin[2], 0.0000f, ACCEPTABLE_DELTA);
BH_VERIFY_DELTA(rMax[0], 5.0000f, ACCEPTABLE_DELTA);
BH_VERIFY_DELTA(rMax[1], 5.0000f, ACCEPTABLE_DELTA);
BH_VERIFY_DELTA(rMax[2], 5.0000f, ACCEPTABLE_DELTA);
return 0;
}
BH_UNIT_TEST(Intersect)
{
float aMin[3], aMax[3], bMin[3], bMax[3], rMin[3], rMax[3];
aMin[0] = 1.0f; aMin[1] = 2.0f; aMin[2] = 3.0f;
aMax[0] = 5.0f; aMax[1] = 5.0f; aMax[2] = 5.0f;
bMin[0] = 0.0f; bMin[1] = 0.0f; bMin[2] = 0.0f;
bMax[0] = 4.0f; bMax[1] = 4.0f; bMax[2] = 4.0f;
BH_VERIFY(BH_Box3fIntersect(aMin, aMax, bMin, bMax, rMin, rMax) == BH_OK);
BH_VERIFY_DELTA(rMin[0], 1.0000f, ACCEPTABLE_DELTA);
BH_VERIFY_DELTA(rMin[1], 2.0000f, ACCEPTABLE_DELTA);
BH_VERIFY_DELTA(rMin[2], 3.0000f, ACCEPTABLE_DELTA);
BH_VERIFY_DELTA(rMax[0], 4.0000f, ACCEPTABLE_DELTA);
BH_VERIFY_DELTA(rMax[1], 4.0000f, ACCEPTABLE_DELTA);
BH_VERIFY_DELTA(rMax[2], 4.0000f, ACCEPTABLE_DELTA);
return 0;
}
BH_UNIT_TEST(Contains)
{
float aMin[3], aMax[3], point[3];
aMin[0] = 1.0f; aMin[1] = 2.0f; aMin[2] = 3.0f;
aMax[0] = 5.0f; aMax[1] = 5.0f; aMax[2] = 5.0f;
point[0] = 0.0f; point[1] = 0.0f; point[2] = 0.0f;
BH_VERIFY(BH_Box3fContains(aMin, aMax, point) != BH_OK);
point[0] = 1.0f; point[1] = 2.0f; point[2] = 3.0f;
BH_VERIFY(BH_Box3fContains(aMin, aMax, point) == BH_OK);
point[0] = 4.0f; point[1] = 4.0f; point[2] = 4.0f;
BH_VERIFY(BH_Box3fContains(aMin, aMax, point) == BH_OK);
point[0] = 6.0f; point[1] = 6.0f; point[2] = 5.0f;
BH_VERIFY(BH_Box3fContains(aMin, aMax, point) != BH_OK);
return 0;
}
BH_UNIT_TEST(Enclose)
{
float points[6], rMin[3], rMax[3];
points[0] = 5.0f; points[1] = 5.0f; points[2] = 5.0f;
points[3] = 1.0f; points[4] = 2.0f; points[5] = 3.0f;
BH_VERIFY(BH_Box3fEnclose(NULL, 0, NULL, NULL) != BH_OK);
BH_VERIFY(BH_Box3fEnclose(points, 2, rMin, rMax) == BH_OK);
BH_VERIFY_DELTA(rMin[0], 1.0000f, ACCEPTABLE_DELTA);
BH_VERIFY_DELTA(rMin[1], 2.0000f, ACCEPTABLE_DELTA);
BH_VERIFY_DELTA(rMin[2], 3.0000f, ACCEPTABLE_DELTA);
BH_VERIFY_DELTA(rMax[0], 5.0000f, ACCEPTABLE_DELTA);
BH_VERIFY_DELTA(rMax[1], 5.0000f, ACCEPTABLE_DELTA);
BH_VERIFY_DELTA(rMax[2], 5.0000f, ACCEPTABLE_DELTA);
return 0;
}
int main(int argc, char **argv)
{
(void)argc;
(void)argv;
BH_UNIT_ADD(Union);
BH_UNIT_ADD(Intersect);
BH_UNIT_ADD(Contains);
BH_UNIT_ADD(Enclose);
return BH_UnitRun();
}