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.
#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.
bool	btCompareTransformsEqual (const btTransform &t1, const btTransform &t2)
	Compairison of transformation objects.

Macro Definition Documentation

BOX_PLANE_EPSILON

#define BOX_PLANE_EPSILON   0.000001f

Definition at line 226 of file btBoxCollision.h.

BT_GREATER

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

Definition at line 41 of file btBoxCollision.h.

BT_MAX

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

Definition at line 38 of file btBoxCollision.h.

BT_MAX3

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

Definition at line 43 of file btBoxCollision.h.

BT_MIN

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

Definition at line 39 of file btBoxCollision.h.

BT_MIN3

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

Definition at line 44 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 31 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 119 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 136 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 141 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 146 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 51 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 153 of file btBoxCollision.h.

btCompareTransformsEqual()

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

inline

Compairison of transformation objects.

Definition at line 633 of file btBoxCollision.h.