1 files changed, 396 insertions, 0 deletions

diff --git a/sdk/rwsdk/include/d3d8/rtbezpat.h b/sdk/rwsdk/include/d3d8/rtbezpat.h
new file mode 100644
index 00000000..f25f5ce9
--- /dev/null
+++ b/sdk/rwsdk/include/d3d8/rtbezpat.h
@@ -0,0 +1,396 @@
+/*
+ * Data structures for rtbezpat toolkit
+ * Copyright (c) Criterion Software Limited
+ */
+
+#if (!defined(RTBEZPAT_H))
+#define RTBEZPAT_H
+
+/**
+ * \defgroup rtbezpatch RtBezPat
+ * \ingroup mathtools
+ *
+ * The Bezier Patch Toolkit is a group of functions that support the way
+ * RenderWare processes patches.
+ */
+
+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
+ * \ref RtBezierRow
+ *  typedef for a row of vectors.
+ * RtBezierRow is an  array of 4 vectors
+ */
+typedef RtBezierV4d RtBezierRow[4];
+
+/**
+ * \ingroup rtbezpatch
+ * \ref 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)) */