Bounding box creation and manipulation. More...

Data Structures
struct	AtBBox
	3D axis-aligned bounding box (uses single-precision) More...

struct	AtBBox2
	2D axis-aligned bounding box (uses integers) More...

Functions
AI_DEVICE	AtBBox::AtBBox (const AtVector &mn, const AtVector &mx)

AI_DEVICE	AtBBox::AtBBox (const AtVector &p0, const AtVector &p1, const AtVector &p2)
	Compute the bbox of a triangle.

AI_DEVICE void	AtBBox::addSlack (float slack)
	Expand a bounding box with some safety slack volume.

void	AtBBox::init ()
	Initialize a bounding box to be empty.

void	AtBBox::expand (const AtVector &v)
	Expand a bounding box with a point.

AI_DEVICE bool	AtBBox::inside (const AtVector &p) const
	Check to see if the specified point is inside the bbox.

float	AtBBox::volume () const
	Compute the volume of a bbox.

bool	AtBBox::isEmpty () const
	Returns whether or not the specified box is empty.

float	AtBBox::halfArea () const
	Compute half the surface area of a bbox.

float	AtBBox::area () const
	Compute the surface area of a bbox.

AI_DEVICE AtVector	AtBBox::center () const
	Compute the center of a bbox.

AtBBox	AiBBoxUnion (const AtBBox &b1, const AtBBox &b2)
	Compute the "union" of two bboxes. More...

AtBBox	AiBBoxIntersection (const AtBBox &b1, const AtBBox &b2)
	Compute the intersection of two bboxes.

AtBBox	AiBBoxLerp (float k, const AtBBox &lo, const AtBBox &hi)
	Linear interpolation between two bboxes (k=0 -> bbox=lo, k=1 -> bbox=hi)

constexpr	AtBBox2::AtBBox2 (int min_x, int min_y, int max_x, int max_y)

constexpr int	AtBBox2::AiBBox2Area () const
	Compute the area (# of pixels) of an integer bbox.

Detailed Description

Bounding box creation and manipulation.

The AtBBox class is implemented as a 3D axis-aligned bounding box, using single precision for its internal storage and operation.

Function Documentation

inline

Compute the "union" of two bboxes.

Note: this name is misleading since it's the bbox of bboxes, not the union (which can be disjoint)