btBoxCollision.h File Reference

#include "LinearMath/btTransform.h"

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Classes
class	BT_BOX_BOX_TRANSFORM_CACHE
	Class for transforming a model1 to the space of model0. More...
class	btAABB
	Axis aligned box. More...

Macros
#define	BT_SWAP_NUMBERS(a, b)
	Swap numbers. More...
#define	BT_MAX(a, b)   (a < b ? b : a)
#define	BT_MIN(a, b)   (a > b ? b : a)
#define	BT_GREATER(x, y)   btFabs(x) > (y)
#define	BT_MAX3(a, b, c)   BT_MAX(a, BT_MAX(b, c))
#define	BT_MIN3(a, b, c)   BT_MIN(a, BT_MIN(b, c))
#define	TEST_CROSS_EDGE_BOX_MCR(edge, absolute_edge, pointa, pointb, _extend, i_dir_0, i_dir_1, i_comp_0, i_comp_1)
#define	TEST_CROSS_EDGE_BOX_X_AXIS_MCR(edge, absolute_edge, pointa, pointb, _extend)
#define	TEST_CROSS_EDGE_BOX_Y_AXIS_MCR(edge, absolute_edge, pointa, pointb, _extend)
#define	TEST_CROSS_EDGE_BOX_Z_AXIS_MCR(edge, absolute_edge, pointa, pointb, _extend)
#define	BOX_PLANE_EPSILON   0.000001f

Enumerations
enum	eBT_PLANE_INTERSECTION_TYPE {   BT_CONST_BACK_PLANE = 0 ,   BT_CONST_COLLIDE_PLANE ,   BT_CONST_FRONT_PLANE }

Functions
btScalar	bt_mat3_dot_col (const btMatrix3x3 &mat, const btVector3 &vec3, int colindex)
	Returns the dot product between a vec3f and the col of a matrix. More...
bool	btCompareTransformsEqual (const btTransform &t1, const btTransform &t2)
	Compairison of transformation objects. More...

Macro Definition Documentation

BOX_PLANE_EPSILON

#define BOX_PLANE_EPSILON   0.000001f

Definition at line 211 of file btBoxCollision.h.

BT_GREATER

#define BT_GREATER	(		x,
			y
	)		btFabs(x) > (y)

Definition at line 40 of file btBoxCollision.h.

BT_MAX

#define BT_MAX	(		a,
			b
	)		(a < b ? b : a)

Definition at line 37 of file btBoxCollision.h.

BT_MAX3

#define BT_MAX3	(		a,
			b,
			c
	)		BT_MAX(a, BT_MAX(b, c))

Definition at line 42 of file btBoxCollision.h.

BT_MIN

#define BT_MIN	(		a,
			b
	)		(a > b ? b : a)

Definition at line 38 of file btBoxCollision.h.

BT_MIN3

#define BT_MIN3	(		a,
			b,
			c
	)		BT_MIN(a, BT_MIN(b, c))

Definition at line 43 of file btBoxCollision.h.

BT_SWAP_NUMBERS

#define BT_SWAP_NUMBERS	(		a,
			b
	)

Value:

        {                         \
                a = a + b;            \
                b = a - b;            \
                a = a - b;            \
        }

Swap numbers.

Definition at line 30 of file btBoxCollision.h.

TEST_CROSS_EDGE_BOX_MCR

#define TEST_CROSS_EDGE_BOX_MCR	(		edge,
			absolute_edge,
			pointa,
			pointb,
			_extend,
			i_dir_0,
			i_dir_1,
			i_comp_0,
			i_comp_1
	)

Value:

        {                                                                                                               \
                const btScalar dir0 = -edge[i_dir_0];                                                                       \
                const btScalar dir1 = edge[i_dir_1];                                                                        \
                btScalar pmin = pointa[i_comp_0] * dir0 + pointa[i_comp_1] * dir1;                                          \
                btScalar pmax = pointb[i_comp_0] * dir0 + pointb[i_comp_1] * dir1;                                          \
                if (pmin > pmax)                                                                                            \
                {                                                                                                           \
                        BT_SWAP_NUMBERS(pmin, pmax);                                                                            \
                }                                                                                                           \
                const btScalar abs_dir0 = absolute_edge[i_dir_0];                                                           \
                const btScalar abs_dir1 = absolute_edge[i_dir_1];                                                           \
                const btScalar rad = _extend[i_comp_0] * abs_dir0 + _extend[i_comp_1] * abs_dir1;                           \
                if (pmin > rad || -rad > pmax) return false;                                                                \
        }

Definition at line 112 of file btBoxCollision.h.

TEST_CROSS_EDGE_BOX_X_AXIS_MCR

#define TEST_CROSS_EDGE_BOX_X_AXIS_MCR	(		edge,
			absolute_edge,
			pointa,
			pointb,
			_extend
	)

Value:

        {                                                                                      \
                TEST_CROSS_EDGE_BOX_MCR(edge, absolute_edge, pointa, pointb, _extend, 2, 1, 1, 2); \
        }

Definition at line 128 of file btBoxCollision.h.

TEST_CROSS_EDGE_BOX_Y_AXIS_MCR

#define TEST_CROSS_EDGE_BOX_Y_AXIS_MCR	(		edge,
			absolute_edge,
			pointa,
			pointb,
			_extend
	)

Value:

        {                                                                                      \
                TEST_CROSS_EDGE_BOX_MCR(edge, absolute_edge, pointa, pointb, _extend, 0, 2, 2, 0); \
        }

Definition at line 133 of file btBoxCollision.h.

TEST_CROSS_EDGE_BOX_Z_AXIS_MCR

#define TEST_CROSS_EDGE_BOX_Z_AXIS_MCR	(		edge,
			absolute_edge,
			pointa,
			pointb,
			_extend
	)

Value:

        {                                                                                      \
                TEST_CROSS_EDGE_BOX_MCR(edge, absolute_edge, pointa, pointb, _extend, 1, 0, 0, 1); \
        }

Definition at line 138 of file btBoxCollision.h.

Enumeration Type Documentation

eBT_PLANE_INTERSECTION_TYPE

enum eBT_PLANE_INTERSECTION_TYPE

Enumerator
BT_CONST_BACK_PLANE
BT_CONST_COLLIDE_PLANE
BT_CONST_FRONT_PLANE

Definition at line 45 of file btBoxCollision.h.

Function Documentation

bt_mat3_dot_col()

btScalar bt_mat3_dot_col ( const btMatrix3x3 &  mat, const btVector3 &  vec3, int  colindex  )

inline

Returns the dot product between a vec3f and the col of a matrix.

Definition at line 144 of file btBoxCollision.h.

btCompareTransformsEqual()

bool btCompareTransformsEqual ( const btTransform &  t1, const btTransform &  t2  )

inline

Compairison of transformation objects.

Definition at line 610 of file btBoxCollision.h.