Implement AABB class

This commit is contained in:
2024-02-06 16:34:49 -05:00
parent 92a20a9347
commit efead577a5

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@@ -35,50 +35,74 @@ namespace J3ML::Geometry
// be arbitrarily oriented in the space with respect to each other.
// If you need to represent a box in 3D space with arbitrary orientation, see the class OBB. */
class AABB
{
class AABB {
public:
Vector3 minPoint;
Vector3 maxPoint;
static int NumFaces() { return 6; }
static int NumEdges() { return 12;}
static int NumVertices() { return 8;}
static AABB FromCenterAndSize(const Vector3& center, const Vector3& size);
static int NumEdges() { return 12; }
static int NumVertices() { return 8; }
static AABB FromCenterAndSize(const Vector3 &center, const Vector3 &size);
float MinX() const;
float MinY() const;
float MinZ() const;
float MaxX() const;
float MaxY() const;
float MaxZ() const;
/// Returns the smallest sphere that contains this AABB.
/// This function computes the minimal volume sphere that contains all the points inside this AABB
Sphere MinimalEnclosingSphere() const;
Vector3 HalfSize() const;
/// Returns the largest sphere that can fit inside this AABB
/// This function computes the largest sphere that can fit inside this AABB.
Sphere MaximalContainedSphere() const;
bool IsFinite() const;
Vector3 Centroid() const;
Vector3 Size() const;
// Quickly returns an arbitrary point inside this AABB
Vector3 AnyPointFast() const;
Vector3 PointInside(float x, float y, float z) const;
// Returns an edge of this AABB
LineSegment Edge(int edgeIndex) const;
Vector3 CornerPoint(int cornerIndex) const;
Vector3 ExtremePoint(const Vector3& direction) const;
Vector3 ExtremePoint(const Vector3& direction, float &projectionDistance);
Vector3 ExtremePoint(const Vector3 &direction) const;
Vector3 ExtremePoint(const Vector3 &direction, float &projectionDistance);
Vector3 PointOnEdge(int edgeIndex, float u) const;
Vector3 FaceCenterPoint(int faceIndex) const;
Vector3 FacePoint(int faceIndex, float u, float v) const;
Vector3 FaceNormal(int faceIndex) const;
Plane FacePlane(int faceIndex);
static AABB MinimalEnclosingAABB(const Vector3* pointArray, int numPoints);
Vector3 GetVolume();
float GetVolumeCubed();
float GetSurfaceArea();
Plane FacePlane(int faceIndex) const;
static AABB MinimalEnclosingAABB(const Vector3 *pointArray, int numPoints);
float GetVolume() const;
float GetSurfaceArea() const;
Vector3 GetRandomPointInside();
Vector3 GetRandomPointOnSurface();
Vector3 GetRandomPointOnEdge();
@@ -110,5 +134,25 @@ namespace J3ML::Geometry
TriangleMesh Triangulate(int numFacesX, int numFacesY, int numFacesZ, bool ccwIsFrontFacing) const;
AABB Intersection(const AABB& rhs) const;
bool IntersectLineAABB(const Vector3& linePos, const Vector3& lineDir, float tNear, float tFar) const;
void SetFrom(const Vector3 *pVector3, int i);
void SetFromCenterAndSize(const Vector3 &center, const Vector3 &size);
void SetFrom(const OBB &obb);
void SetFrom(const Sphere &s);
Vector3 GetRandomPointInside() const;
void SetNegativeInfinity();
void Enclose(const Vector3 &point);
void Enclose(const Vector3 &aabbMinPt, const Vector3 &aabbMaxPt);
void Enclose(const LineSegment &lineSegment);
void Enclose(const OBB &obb);
};
}