Bullet Collision Detection & Physics Library
Classes | Macros | Enumerations | Functions
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

#define BOX_PLANE_EPSILON   0.000001f

Definition at line 226 of file btBoxCollision.h.

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

Definition at line 41 of file btBoxCollision.h.

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

Definition at line 38 of file btBoxCollision.h.

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

Definition at line 43 of file btBoxCollision.h.

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

Definition at line 39 of file btBoxCollision.h.

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

Definition at line 44 of file btBoxCollision.h.

#define BT_SWAP_NUMBERS (   a,
 
)
Value:
{ \
a = a+b; \
b = a-b; \
a = a-b; \
}\

Swap numbers.

Definition at line 31 of file btBoxCollision.h.

#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;\
}\
#define BT_SWAP_NUMBERS(a, b)
Swap numbers.
float btScalar
The btScalar type abstracts floating point numbers, to easily switch between double and single floati...
Definition: btScalar.h:278

Definition at line 119 of file btBoxCollision.h.

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

Definition at line 136 of file btBoxCollision.h.

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

Definition at line 141 of file btBoxCollision.h.

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

Definition at line 146 of file btBoxCollision.h.

Enumeration Type Documentation

Enumerator
BT_CONST_BACK_PLANE 
BT_CONST_COLLIDE_PLANE 
BT_CONST_FRONT_PLANE 

Definition at line 51 of file btBoxCollision.h.

Function Documentation

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.

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

Compairison of transformation objects.

Definition at line 633 of file btBoxCollision.h.