Catcrafts/Crafter.Math
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OBB OBB test

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This commit is contained in:
Jorijn van der Graaf 2026-03-04 15:57:34 +01:00
commit 55a319a6ac
4 changed files with 137 additions and 35 deletions
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69
interfaces/main.cpp
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@ -4,25 +4,56 @@ import std;
using namespace Crafter;
int main() {
// // Test Ray-OrientedBox intersection
// Vector<float, 3, 0> boxPos(0.0f, 0.0f, 0.0f);
// Vector<float, 3, 0> boxSize(2.0f, 2.0f, 2.0f);
// Vector<float, 3, 0> boxRot(0.0f, 0.0f, 0.0f); // No rotation
// Vector<float, 3, 0> rayOrigin(0.0f, 0.0f, -5.0f);
// Vector<float, 3, 0> rayDir(0.0f, 0.0f, 1.0f);
// float hitDistance = IntersectionTestRayOrientedBox(boxPos, boxSize, boxRot, rayOrigin, rayDir);
// if (hitDistance < std::numeric_limits<float>::max()) {
// // Hit occurred
// std::cout << "Ray-OrientedBox intersection at distance: " << hitDistance << std::endl;
// } else {
// // No hit
// std::cout << "No intersection with Ray-OrientedBox" << std::endl;
// }
// return 0;
// Intersection Test
// Define Box A (size and matrix for transformation)
Vector<float, 3, 0> sizeA(1.0f, 1.0f, 1.0f); // Box A size
MatrixRowMajor<float, 4, 3, 1> boxA;
boxA.m[0][0] = 1.0f; boxA.m[1][0] = 0.0f; boxA.m[2][0] = 0.0f;
boxA.m[1][0] = 0.0f; boxA.m[1][1] = 1.0f; boxA.m[2][1] = 0.0f;
boxA.m[2][0] = 0.0f; boxA.m[1][2] = 0.0f; boxA.m[2][2] = 1.0f;
// Define Box B (size and matrix for transformation)
Vector<float, 3, 0> sizeB(1.0f, 1.0f, 1.0f); // Box B size
MatrixRowMajor<float, 4, 3, 1> boxB;
boxB.m[0][0] = 1.0f; boxB.m[1][0] = 0.0f; boxB.m[2][0] = 0.0f;
boxB.m[1][0] = 0.0f; boxB.m[1][1] = 1.0f; boxB.m[2][1] = 0.0f;
boxB.m[2][0] = 0.0f; boxB.m[1][2] = 0.0f; boxB.m[2][2] = 1.0f;
// Apply a small translation to box B (so that they overlap)
boxB.m[0][3] = 0.5f;
boxB.m[1][3] = 0.5f;
boxB.m[2][3] = 0.0f;
// Check if the boxes intersect (they should, as they're overlapping)
bool result = IntersectionTestOrientedBoxOrientedBox(sizeA, boxA, sizeB, boxB);
std::cout << result << std::endl;
std::cout << (Vector<float, 3, 0>(5, 0, 0) == Vector<float, 3, 0>(5,0,1)) << std::endl;
// Miss Test
// Define Box A (size and matrix for transformation)
Vector<float, 3, 0> sizeC(1.0f, 1.0f, 1.0f); // Box C size
MatrixRowMajor<float, 4, 3, 1> boxC;
boxC.m[0][0] = 1.0f; boxC.m[1][0] = 0.0f; boxC.m[2][0] = 0.0f;
boxC.m[1][0] = 0.0f; boxC.m[1][1] = 1.0f; boxC.m[2][1] = 0.0f;
boxC.m[2][0] = 0.0f; boxC.m[1][2] = 0.0f; boxC.m[2][2] = 1.0f;
// Define Box D (size and matrix for transformation)
Vector<float, 3, 0> sizeD(1.0f, 1.0f, 1.0f); // Box D size
MatrixRowMajor<float, 4, 3, 1> boxD;
boxD.m[0][0] = 1.0f; boxD.m[1][0] = 0.0f; boxD.m[2][0] = 0.0f;
boxD.m[1][0] = 0.0f; boxD.m[1][1] = 1.0f; boxD.m[2][1] = 0.0f;
boxD.m[2][0] = 0.0f; boxD.m[1][2] = 0.0f; boxD.m[2][2] = 1.0f;
// Apply a large translation to box D (so that they do not intersect)
boxD.m[0][3] = 3.0f;
boxD.m[1][3] = 3.0f;
boxD.m[2][3] = 0.0f;
// Check if the boxes do not intersect (they shouldn't, as they are far apart)
bool missResult = IntersectionTestOrientedBoxOrientedBox(sizeC, boxC, sizeD, boxD);
std::cout << missResult << std::endl;
return 0;
}