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Added bounding box calculation

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This commit is contained in:
raysan5 2016-01-25 11:12:31 +01:00
parent 41959eeae1
commit 3113a20390
3 changed files with 46 additions and 11 deletions
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29
src/models.c
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@ -1275,6 +1275,20 @@ void DrawBillboardRec(Camera camera, Texture2D texture, Rectangle sourceRec, Vec
rlDisableTexture();
}
// Draw a bounding box with wires
void DrawBoundingBox(BoundingBox box)
{
Vector3 size;
size.x = fabsf(box.max.x - box.min.x);
size.y = fabsf(box.max.y - box.min.y);
size.z = fabsf(box.max.z - box.min.z);
Vector3 center = { box.min.x + size.x/2.0f, box.min.y + size.y/2.0f, box.min.z + size.z/2.0f };
DrawCubeWires(center, size.x, size.y, size.z, GREEN);
}
// Detect collision between two spheres
bool CheckCollisionSpheres(Vector3 centerA, float radiusA, Vector3 centerB, float radiusB)
{
@ -1401,10 +1415,8 @@ bool CheckCollisionRayBox(Ray ray, Vector3 minBBox, Vector3 maxBBox)
return collision;
}
// TODO: Useful function to check collision area?
//BoundingBox GetCollisionArea(BoundingBox box1, BoundingBox box2)
// Calculate mesh bounding box limits
// NOTE: minVertex and maxVertex should be transformed by model transform matrix (position, scale, rotate)
BoundingBox CalculateBoundingBox(Mesh mesh)
{
// Get min and max vertex to construct bounds (AABB)
@ -1413,15 +1425,10 @@ BoundingBox CalculateBoundingBox(Mesh mesh)
for (int i = 1; i < mesh.vertexCount; i++)
{
// TODO: Compare min and max with previous vertex
//minVertex = Vector3.Min(minVertex, mesh.vertices[i]);
//maxVertex = Vector3.Max(maxVertex, mesh.vertices[i]);
minVertex = VectorMin(minVertex, (Vector3){ mesh.vertices[i*3], mesh.vertices[i*3 + 1], mesh.vertices[i*3 + 2] });
maxVertex = VectorMax(maxVertex, (Vector3){ mesh.vertices[i*3], mesh.vertices[i*3 + 1], mesh.vertices[i*3 + 2] });
}
// NOTE: For OBB, transform mesh by model transform matrix
//minVertex = VectorTransform(meshMin, mesh.transform);
//maxVertex = VectorTransform(meshMax, mesh.transform);
// Create the bounding box
BoundingBox box;
box.min = minVertex;