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/***************************************************************************
* *
* Module : rtbary.h *
* *
* Purpose : Barycentric operations *
* *
**************************************************************************/
#ifndef RTBARY_H
#define RTBARY_H
/**
* \defgroup rtbary RtBary
* \ingroup rttool
*
* Barycentric Toolkit for RenderWare.
*/
/****************************************************************************
Includes
*/
#include <rwcore.h>
#include <rtbary.rpe> /* automatically generated header file */
/****************************************************************************
Global types
*/
/**
* \ingroup rtbary
* \typedef RtBaryV4d
* typedef for the 4 element homogeneous row of a transform matrix mapping
* a point from Cartesian space to the barycentric space defined by a triangle.
*/
typedef RwReal RtBaryV4d[4];
/**
* \ingroup rtbary
* \typedef RtBaryTransform
* typedef for the 4x4 homogeneous transform matrix mapping a point
* from Cartesian space to the barycentric space defined by a triangle.
*/
typedef RtBaryV4d RtBaryTransform[4];
/****************************************************************************
Defines
*/
#define RtBaryV3dFromWeightsMacro(_out, _b, _v0, _v1, _v2) \
MACRO_START \
{ \
(_out)->x = (RwReal)( ((_v0)->x * (_b)[0]) + \
((_v1)->x * (_b)[1]) + \
((_v2)->x * (_b)[2]) ); \
(_out)->y = (RwReal)( ((_v0)->y * (_b)[0]) + \
((_v1)->y * (_b)[1]) + \
((_v2)->y * (_b)[2]) ); \
(_out)->z = (RwReal)( ((_v0)->z * (_b)[0]) + \
((_v1)->z * (_b)[1]) + \
((_v2)->z * (_b)[2]) ); \
} \
MACRO_STOP
#define RtBaryWeightsFromV3dMacro(_out, _m, _in) \
MACRO_START \
{ \
(_out)[0] = ( (_m)[0][0] * (_in)->x + \
(_m)[1][0] * (_in)->y + \
(_m)[2][0] * (_in)->z + \
(_m)[3][0] ); \
(_out)[1] = ( (_m)[0][1] * (_in)->x + \
(_m)[1][1] * (_in)->y + \
(_m)[2][1] * (_in)->z + \
(_m)[3][1] ); \
(_out)[2] = ( (_m)[0][2] * (_in)->x + \
(_m)[1][2] * (_in)->y + \
(_m)[2][2] * (_in)->z + \
(_m)[3][2] ); \
(_out)[3] = ( (_m)[0][3] * (_in)->x + \
(_m)[1][3] * (_in)->y + \
(_m)[2][3] * (_in)->z + \
(_m)[3][3] ); \
} \
MACRO_STOP
#if (! ( defined(RWDEBUG) || defined(RWSUPPRESSINLINE) ))
#define RtBaryV3dFromWeights(_out, _b, _v0, _v1, _v2) \
RtBaryV3dFromWeightsMacro(_out, _b, _v0, _v1, _v2)
#define RtBaryWeightsFromV3d(_out, _m, _in) \
RtBaryWeightsFromV3dMacro(_out, _m, _in)
#endif /* (! ( defined(RWDEBUG) || defined(RWSUPPRESSINLINE) )) */
/****************************************************************************
Function prototypes
*/
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
extern RwBool
RtBaryGetTransform(RtBaryTransform m,
RwReal * const area,
const RwV3d * const v0,
const RwV3d * const v1,
const RwV3d * const v2);
#if ( defined(RWDEBUG) || defined(RWSUPPRESSINLINE) )
extern void
RtBaryV3dFromWeights(RwV3d * const out,
const RtBaryV4d weights,
const RwV3d * const v0,
const RwV3d * const v1,
const RwV3d * const v2);
extern void
RtBaryWeightsFromV3d(RtBaryV4d out,
RtBaryTransform mat,
const RwV3d * const in);
extern void
_rtImportWorldBaryFromEdge(RtBaryV4d out,
RtBaryTransform mat,
const RwV3d * const in);
#endif /* ( defined(RWDEBUG) || defined(RWSUPPRESSINLINE) ) */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* RTBARY_H */
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