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re3/rwsdk/include/d3d8/rtbezpat.h

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/*
* Data structures for rtbezpat toolkit
* Copyright (c) Criterion Software Limited
*/
#if (!defined(RTBEZPAT_H))
#define RTBEZPAT_H
/**
* \defgroup rtbezpatch RtBezPat
* \ingroup rttool
*
* The Bezier Patch Toolkit is a group of functions that support the way
* RenderWare processes patches.
*/
/**
* \ingroup rtbezpatch
* \typedef RtBezierV4d
* typedef for struct RtBezierV4d.
*/
typedef struct RtBezierV4d RtBezierV4d;
/**
* \ingroup rtbezpatch
* \struct RtBezierV4d
* This type represents 4d points and vectors specified by
* the (x, y, z, w) coordinates of a 4d point or
* the (x, y, z, w) components of a 4d vector.
*/
struct RtBezierV4d
{
RwReal x;
/**< X value */
RwReal y;
/**< Y value */
RwReal z;
/**< Z value */
RwReal w;
/**< W value */
};
/**
* \ingroup rtbezpatch
* \typedef RtBezierRow
* typedef for a row of vectors.
* RtBezierRow is an array of 4 vectors
*/
typedef RtBezierV4d RtBezierRow[4];
/**
* \ingroup rtbezpatch
* \typedef RtBezierMatrix
* typedef for a matrix of 4*4 vectors.
* RtBezierMatrix is an array of 4 rows.
*/
typedef RtBezierRow RtBezierMatrix[4];
/*
* Bernstein polynomials;
*/
#define RtBern03(_u, _cu) ( (_cu) * (_cu) * (_cu) )
#define RtBern13(_u, _cu) ( 3 * (_u) * (_cu) * (_cu) )
#define RtBern23(_u, _cu) ( 3 * (_u) * (_u) * (_cu) )
#define RtBern33(_u, _cu) ( (_u) * (_u) * (_u) )
#define RtBezierQuadSample3dMacro(_out, _P, _u, _v) \
MACRO_START \
{ \
const RtBezierV4d * const P0 = &(_P)[0][0]; \
const RtBezierV4d * const P1 = &(_P)[1][0]; \
const RtBezierV4d * const P2 = &(_P)[2][0]; \
const RtBezierV4d * const P3 = &(_P)[3][0]; \
const RwReal _pu = (_u); \
const RwReal _cu = ((RwReal)1) - _pu; \
const RwReal B03u = RtBern03(_pu,_cu); \
const RwReal B13u = RtBern13(_pu,_cu); \
const RwReal B23u = RtBern23(_pu,_cu); \
const RwReal B33u = RtBern33(_pu,_cu); \
const RwReal _pv = (_v); \
const RwReal _cv = ((RwReal)1) - _pv; \
const RwReal B03v = RtBern03(_pv,_cv); \
const RwReal B13v = RtBern13(_pv,_cv); \
const RwReal B23v = RtBern23(_pv,_cv); \
const RwReal B33v = RtBern33(_pv,_cv); \
RtBezierRow A; \
\
A[0].x = B03u*P0[0].x + B13u*P1[0].x + B23u*P2[0].x + B33u*P3[0].x; \
A[0].y = B03u*P0[0].y + B13u*P1[0].y + B23u*P2[0].y + B33u*P3[0].y; \
A[0].z = B03u*P0[0].z + B13u*P1[0].z + B23u*P2[0].z + B33u*P3[0].z; \
A[1].x = B03u*P0[1].x + B13u*P1[1].x + B23u*P2[1].x + B33u*P3[1].x; \
A[1].y = B03u*P0[1].y + B13u*P1[1].y + B23u*P2[1].y + B33u*P3[1].y; \
A[1].z = B03u*P0[1].z + B13u*P1[1].z + B23u*P2[1].z + B33u*P3[1].z; \
A[2].x = B03u*P0[2].x + B13u*P1[2].x + B23u*P2[2].x + B33u*P3[2].x; \
A[2].y = B03u*P0[2].y + B13u*P1[2].y + B23u*P2[2].y + B33u*P3[2].y; \
A[2].z = B03u*P0[2].z + B13u*P1[2].z + B23u*P2[2].z + B33u*P3[2].z; \
A[3].x = B03u*P0[3].x + B13u*P1[3].x + B23u*P2[3].x + B33u*P3[3].x; \
A[3].y = B03u*P0[3].y + B13u*P1[3].y + B23u*P2[3].y + B33u*P3[3].y; \
A[3].z = B03u*P0[3].z + B13u*P1[3].z + B23u*P2[3].z + B33u*P3[3].z; \
\
(_out)->x = A[0].x*B03v + A[1].x*B13v + A[2].x*B23v + A[3].x*B33v; \
(_out)->y = A[0].y*B03v + A[1].y*B13v + A[2].y*B23v + A[3].y*B33v; \
(_out)->z = A[0].z*B03v + A[1].z*B13v + A[2].z*B23v + A[3].z*B33v; \
} \
MACRO_STOP
#define RtBezierQuadDifferenceStepU3dMacro(_row) \
MACRO_START \
{ \
(_row)[0].x += (_row)[1].x; \
(_row)[0].y += (_row)[1].y; \
(_row)[0].z += (_row)[1].z; \
\
(_row)[1].x += (_row)[2].x; \
(_row)[1].y += (_row)[2].y; \
(_row)[1].z += (_row)[2].z; \
\
(_row)[2].x += (_row)[3].x; \
(_row)[2].y += (_row)[3].y; \
(_row)[2].z += (_row)[3].z; \
\
} \
MACRO_STOP
#define RtBezierQuadDifferenceStepU4dMacro(_row) \
MACRO_START \
{ \
(_row)[0].x += (_row)[1].x; \
(_row)[0].y += (_row)[1].y; \
(_row)[0].z += (_row)[1].z; \
(_row)[0].w += (_row)[1].w; \
\
(_row)[1].x += (_row)[2].x; \
(_row)[1].y += (_row)[2].y; \
(_row)[1].z += (_row)[2].z; \
(_row)[1].w += (_row)[2].w; \
\
(_row)[2].x += (_row)[3].x; \
(_row)[2].y += (_row)[3].y; \
(_row)[2].z += (_row)[3].z; \
(_row)[2].w += (_row)[3].w; \
\
} \
MACRO_STOP
#define RtBezierQuadDifferenceStepV3dMacro(_mat) \
MACRO_START \
{ \
RtBezierV4d * const m0 = &(_mat)[0][0]; \
RtBezierV4d * const m1 = &(_mat)[1][0]; \
RtBezierV4d * const m2 = &(_mat)[2][0]; \
RtBezierV4d * const m3 = &(_mat)[3][0]; \
\
/* (_row) 0 */ \
m0[0].x += m1[0].x; \
m0[0].y += m1[0].y; \
m0[0].z += m1[0].z; \
\
m0[1].x += m1[1].x; \
m0[1].y += m1[1].y; \
m0[1].z += m1[1].z; \
\
m0[2].x += m1[2].x; \
m0[2].y += m1[2].y; \
m0[2].z += m1[2].z; \
\
m0[3].x += m1[3].x; \
m0[3].y += m1[3].y; \
m0[3].z += m1[3].z; \
\
/* (_row) 1 */ \
m1[0].x += m2[0].x; \
m1[0].y += m2[0].y; \
m1[0].z += m2[0].z; \
\
m1[1].x += m2[1].x; \
m1[1].y += m2[1].y; \
m1[1].z += m2[1].z; \
\
m1[2].x += m2[2].x; \
m1[2].y += m2[2].y; \
m1[2].z += m2[2].z; \
\
m1[3].x += m2[3].x; \
m1[3].y += m2[3].y; \
m1[3].z += m2[3].z; \
\
/* (_row) 2 */ \
m2[0].x += m3[0].x; \
m2[0].y += m3[0].y; \
m2[0].z += m3[0].z; \
\
m2[1].x += m3[1].x; \
m2[1].y += m3[1].y; \
m2[1].z += m3[1].z; \
\
m2[2].x += m3[2].x; \
m2[2].y += m3[2].y; \
m2[2].z += m3[2].z; \
\
m2[3].x += m3[3].x; \
m2[3].y += m3[3].y; \
m2[3].z += m3[3].z; \
} \
MACRO_STOP
#define RtBezierQuadDifferenceStepV4dMacro(_mat) \
MACRO_START \
{ \
RtBezierV4d * const m0 = &(_mat)[0][0]; \
RtBezierV4d * const m1 = &(_mat)[1][0]; \
RtBezierV4d * const m2 = &(_mat)[2][0]; \
RtBezierV4d * const m3 = &(_mat)[3][0]; \
\
/* (_row) 0 */ \
m0[0].x += m1[0].x; \
m0[0].y += m1[0].y; \
m0[0].z += m1[0].z; \
m0[0].w += m1[0].w; \
\
m0[1].x += m1[1].x; \
m0[1].y += m1[1].y; \
m0[1].z += m1[1].z; \
m0[1].w += m1[1].w; \
\
m0[2].x += m1[2].x; \
m0[2].y += m1[2].y; \
m0[2].z += m1[2].z; \
m0[2].w += m1[2].w; \
\
m0[3].x += m1[3].x; \
m0[3].y += m1[3].y; \
m0[3].z += m1[3].z; \
m0[3].w += m1[3].w; \
\
/* (_row) 1 */ \
m1[0].x += m2[0].x; \
m1[0].y += m2[0].y; \
m1[0].z += m2[0].z; \
m1[0].w += m2[0].w; \
\
m1[1].x += m2[1].x; \
m1[1].y += m2[1].y; \
m1[1].z += m2[1].z; \
m1[1].w += m2[1].w; \
\
m1[2].x += m2[2].x; \
m1[2].y += m2[2].y; \
m1[2].z += m2[2].z; \
m1[2].w += m2[2].w; \
\
m1[3].x += m2[3].x; \
m1[3].y += m2[3].y; \
m1[3].z += m2[3].z; \
m1[3].w += m2[3].w; \
\
/* (_row) 2 */ \
m2[0].x += m3[0].x; \
m2[0].y += m3[0].y; \
m2[0].z += m3[0].z; \
m2[0].w += m3[0].w; \
\
m2[1].x += m3[1].x; \
m2[1].y += m3[1].y; \
m2[1].z += m3[1].z; \
m2[1].w += m3[1].w; \
\
m2[2].x += m3[2].x; \
m2[2].y += m3[2].y; \
m2[2].z += m3[2].z; \
m2[2].w += m3[2].w; \
\
m2[3].x += m3[3].x; \
m2[3].y += m3[3].y; \
m2[3].z += m3[3].z; \
m2[3].w += m3[3].w; \
} \
MACRO_STOP
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
extern void
RtBezierQuadControlFit3d(RtBezierMatrix B,
RtBezierMatrix P);
extern void
RtBezierQuadBernsteinWeight3d(RtBezierMatrix W,
RtBezierMatrix B);
extern void
RtBezierQuadBernsteinWeight4d(RtBezierMatrix W,
RtBezierMatrix B);
extern void
RtBezierQuadPointDifference3d(RtBezierMatrix D,
RtBezierMatrix W,
RwReal PointU,
RwReal PointV,
RwReal StepU,
RwReal stepV);
extern void
RtBezierQuadPointDifference4d(RtBezierMatrix D,
RtBezierMatrix W,
RwReal PointU,
RwReal PointV,
RwReal StepU,
RwReal stepV);
extern void
RtBezierQuadOriginDifference3d(RtBezierMatrix D,
RtBezierMatrix W,
RwReal stepU,
RwReal setpV);
extern void
RtBezierQuadOriginDifference4d(RtBezierMatrix D,
RtBezierMatrix W,
RwReal stepU,
RwReal setpV);
#if ( defined(RWDEBUG) || defined(RWSUPPRESSINLINE) )
extern void
RtBezierQuadSample3d(RwV3d * out,
RtBezierMatrix B,
RwReal u,
RwReal v);
extern void RtBezierQuadDifferenceStepU3d(RtBezierRow row);
extern void RtBezierQuadDifferenceStepU4d(RtBezierRow row);
extern void RtBezierQuadDifferenceStepV3d(RtBezierMatrix mat);
extern void RtBezierQuadDifferenceStepV4d(RtBezierMatrix mat);
#else /* ( defined(RWDEBUG) || defined(RWSUPPRESSINLINE) ) */
#define RtBezierQuadSample3d(_out, _P, _u, _v) \
RtBezierQuadSample3dMacro(_out, _P, _u, _v)
#define RtBezierQuadDifferenceStepU3d(_row) \
RtBezierQuadDifferenceStepU3dMacro(_row)
#define RtBezierQuadDifferenceStepU4d(_row) \
RtBezierQuadDifferenceStepU4dMacro(_row)
#define RtBezierQuadDifferenceStepV3d(_mat) \
RtBezierQuadDifferenceStepV3dMacro(_mat)
#define RtBezierQuadDifferenceStepV4d(_mat) \
RtBezierQuadDifferenceStepV4dMacro(_mat)
#endif /* ( defined(RWDEBUG) || defined(RWSUPPRESSINLINE) ) */
/*
*
*/
extern void
RtBezierTriangleControlFit3d(RtBezierMatrix T, RtBezierMatrix P);
extern void
RtBezierQuadFromTriangle(RtBezierMatrix Q, RtBezierMatrix T);
extern void
RtBezierQuadTangent(RtBezierMatrix D,
RwReal theta,
RtBezierMatrix P);
extern void
RtBezierQuadTangentPair(RtBezierMatrix Dt,
RtBezierMatrix Dp,
RwReal theta,
RtBezierMatrix P);
extern void
RtBezierQuadGetNormals(RtBezierMatrix N,
RtBezierMatrix B);
#if (defined(RWDEBUG) && defined(RWVERBOSE))
extern void
_rtBezierGnuPlot(RtBezierMatrix B,
RwChar * name,
RwChar * title);
#else /* (defined(RWDEBUG) && defined(RWVERBOSE)) */
#define _rtBezierGnuPlot(B, name, title) /* No-op */
#endif /* (defined(RWDEBUG) && defined(RWVERBOSE)) */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* (!defined(RTBEZPAT_H)) */
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