dlls/d3dx9_36/math.c

   1 /*
   2  * Mathematical operations specific to D3DX9.
   3  *
   4  * Copyright (C) 2008 Philip Nilsson
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #define NONAMELESSUNION
  22
  23 #include "config.h"
  24 #include "windef.h"
  25 #include "wingdi.h"
  26 #include "wine/debug.h"
  27 #include "d3dx9.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(d3dx);
  30
  31 /*************************************************************************
  32  * D3DXMatrixDecompose
  33  */
  34 HRESULT WINAPI D3DXMatrixDecompose(D3DXVECTOR3 *poutscale, D3DXQUATERNION *poutrotation, D3DXVECTOR3 *pouttranslation, D3DXMATRIX *pm)
  35 {
  36     D3DXMATRIX normalized;
  37     D3DXVECTOR3 vec;
  38
  39     if (!pm)
  40     {
  41      return D3DERR_INVALIDCALL;
  42     }
  43
  44     /*Compute the scaling part.*/
  45     vec.x=pm->u.m[0][0];
  46     vec.y=pm->u.m[0][1];
  47     vec.z=pm->u.m[0][2];
  48     poutscale->x=D3DXVec3Length(&vec);
  49
  50     vec.x=pm->u.m[1][0];
  51     vec.y=pm->u.m[1][1];
  52     vec.z=pm->u.m[1][2];
  53     poutscale->y=D3DXVec3Length(&vec);
  54
  55     vec.x=pm->u.m[2][0];
  56     vec.y=pm->u.m[2][1];
  57     vec.z=pm->u.m[2][2];
  58     poutscale->z=D3DXVec3Length(&vec);
  59
  60     /*Compute the translation part.*/
  61     pouttranslation->x=pm->u.m[3][0];
  62     pouttranslation->y=pm->u.m[3][1];
  63     pouttranslation->z=pm->u.m[3][2];
  64
  65     /*Let's calculate the rotation now*/
  66     if ( (poutscale->x == 0.0f) || (poutscale->y == 0.0f) || (poutscale->z == 0.0f) )
  67     {
  68      return D3DERR_INVALIDCALL;
  69     }
  70
  71     normalized.u.m[0][0]=pm->u.m[0][0]/poutscale->x;
  72     normalized.u.m[0][1]=pm->u.m[0][1]/poutscale->x;
  73     normalized.u.m[0][2]=pm->u.m[0][2]/poutscale->x;
  74     normalized.u.m[1][0]=pm->u.m[1][0]/poutscale->y;
  75     normalized.u.m[1][1]=pm->u.m[1][1]/poutscale->y;
  76     normalized.u.m[1][2]=pm->u.m[1][2]/poutscale->y;
  77     normalized.u.m[2][0]=pm->u.m[2][0]/poutscale->z;
  78     normalized.u.m[2][1]=pm->u.m[2][1]/poutscale->z;
  79     normalized.u.m[2][2]=pm->u.m[2][2]/poutscale->z;
  80
  81     D3DXQuaternionRotationMatrix(poutrotation,&normalized);
  82     return S_OK;
  83 }
  84
  85 /*************************************************************************
  86  * D3DXPlaneTransformArray
  87  */
  88 D3DXPLANE* WINAPI D3DXPlaneTransformArray(
  89     D3DXPLANE* out, UINT outstride, CONST D3DXPLANE* in, UINT instride,
  90     CONST D3DXMATRIX* matrix, UINT elements)
  91 {
  92     UINT i;
  93     TRACE("\n");
  94     for (i = 0; i < elements; ++i) {
  95         D3DXPlaneTransform(
  96             (D3DXPLANE*)((char*)out + outstride * i),
  97             (CONST D3DXPLANE*)((const char*)in + instride * i),
  98             matrix);
  99     }
 100     return out;
 101 }
 102
 103 /*************************************************************************
 104  * D3DXVec2TransformArray
 105  *
 106  * Transform an array of vectors by a matrix.
 107  */
 108 D3DXVECTOR4* WINAPI D3DXVec2TransformArray(
 109     D3DXVECTOR4* out, UINT outstride, CONST D3DXVECTOR2* in, UINT instride,
 110     CONST D3DXMATRIX* matrix, UINT elements)
 111 {
 112     UINT i;
 113     TRACE("\n");
 114     for (i = 0; i < elements; ++i) {
 115         D3DXVec2Transform(
 116             (D3DXVECTOR4*)((char*)out + outstride * i),
 117             (CONST D3DXVECTOR2*)((const char*)in + instride * i),
 118             matrix);
 119     }
 120     return out;
 121 }
 122
 123 /*************************************************************************
 124  * D3DXVec2TransformCoordArray
 125  */
 126 D3DXVECTOR2* WINAPI D3DXVec2TransformCoordArray(
 127     D3DXVECTOR2* out, UINT outstride, CONST D3DXVECTOR2* in, UINT instride,
 128     CONST D3DXMATRIX* matrix, UINT elements)
 129 {
 130     UINT i;
 131     TRACE("\n");
 132     for (i = 0; i < elements; ++i) {
 133         D3DXVec2TransformCoord(
 134             (D3DXVECTOR2*)((char*)out + outstride * i),
 135             (CONST D3DXVECTOR2*)((const char*)in + instride * i),
 136             matrix);
 137     }
 138     return out;
 139 }
 140
 141 /*************************************************************************
 142  * D3DXVec2TransformNormalArray
 143  */
 144 D3DXVECTOR2* WINAPI D3DXVec2TransformNormalArray(
 145     D3DXVECTOR2* out, UINT outstride, CONST D3DXVECTOR2 *in, UINT instride,
 146     CONST D3DXMATRIX *matrix, UINT elements)
 147 {
 148     UINT i;
 149     TRACE("\n");
 150     for (i = 0; i < elements; ++i) {
 151         D3DXVec2TransformNormal(
 152             (D3DXVECTOR2*)((char*)out + outstride * i),
 153             (CONST D3DXVECTOR2*)((const char*)in + instride * i),
 154             matrix);
 155     }
 156     return out;
 157 }
 158
 159 /*************************************************************************
 160  * D3DXVec3ProjectArray
 161  *
 162  * Projects an array of vectors to the screen.
 163  */
 164 D3DXVECTOR3* WINAPI D3DXVec3ProjectArray(
 165     D3DXVECTOR3* out, UINT outstride, CONST D3DXVECTOR3* in, UINT instride,
 166     CONST D3DVIEWPORT9* viewport, CONST D3DXMATRIX* projection,
 167     CONST D3DXMATRIX* view, CONST D3DXMATRIX* world, UINT elements)
 168 {
 169     UINT i;
 170     TRACE("\n");
 171     for (i = 0; i < elements; ++i) {
 172         D3DXVec3Project(
 173             (D3DXVECTOR3*)((char*)out + outstride * i),
 174             (CONST D3DXVECTOR3*)((const char*)in + instride * i),
 175             viewport, projection, view, world);
 176     }
 177     return out;
 178 }
 179
 180 /*************************************************************************
 181  * D3DXVec3TransformArray
 182  */
 183 D3DXVECTOR4* WINAPI D3DXVec3TransformArray(
 184     D3DXVECTOR4* out, UINT outstride, CONST D3DXVECTOR3* in, UINT instride,
 185     CONST D3DXMATRIX* matrix, UINT elements)
 186 {
 187     UINT i;
 188     TRACE("\n");
 189     for (i = 0; i < elements; ++i) {
 190         D3DXVec3Transform(
 191             (D3DXVECTOR4*)((char*)out + outstride * i),
 192             (CONST D3DXVECTOR3*)((const char*)in + instride * i),
 193             matrix);
 194     }
 195     return out;
 196 }
 197
 198 /*************************************************************************
 199  * D3DXVec3TransformCoordArray
 200  */
 201 D3DXVECTOR3* WINAPI D3DXVec3TransformCoordArray(
 202     D3DXVECTOR3* out, UINT outstride, CONST D3DXVECTOR3* in, UINT instride,
 203     CONST D3DXMATRIX* matrix, UINT elements)
 204 {
 205     UINT i;
 206     TRACE("\n");
 207     for (i = 0; i < elements; ++i) {
 208         D3DXVec3TransformCoord(
 209             (D3DXVECTOR3*)((char*)out + outstride * i),
 210             (CONST D3DXVECTOR3*)((const char*)in + instride * i),
 211             matrix);
 212     }
 213     return out;
 214 }
 215
 216 /*************************************************************************
 217  * D3DXVec3TransformNormalArray
 218  */
 219 D3DXVECTOR3* WINAPI D3DXVec3TransformNormalArray(
 220     D3DXVECTOR3* out, UINT outstride, CONST D3DXVECTOR3* in, UINT instride,
 221     CONST D3DXMATRIX* matrix, UINT elements)
 222 {
 223     UINT i;
 224     TRACE("\n");
 225     for (i = 0; i < elements; ++i) {
 226         D3DXVec3TransformNormal(
 227             (D3DXVECTOR3*)((char*)out + outstride * i),
 228             (CONST D3DXVECTOR3*)((const char*)in + instride * i),
 229             matrix);
 230     }
 231     return out;
 232 }
 233
 234 /*************************************************************************
 235  * D3DXVec3UnprojectArray
 236  */
 237 D3DXVECTOR3* WINAPI D3DXVec3UnprojectArray(
 238     D3DXVECTOR3* out, UINT outstride, CONST D3DXVECTOR3* in, UINT instride,
 239     CONST D3DVIEWPORT9* viewport, CONST D3DXMATRIX* projection,
 240     CONST D3DXMATRIX* view, CONST D3DXMATRIX* world, UINT elements)
 241 {
 242     UINT i;
 243     TRACE("\n");
 244     for (i = 0; i < elements; ++i) {
 245         D3DXVec3Unproject(
 246             (D3DXVECTOR3*)((char*)out + outstride * i),
 247             (CONST D3DXVECTOR3*)((const char*)in + instride * i),
 248             viewport, projection, view, world);
 249     }
 250     return out;
 251 }
 252
 253 /*************************************************************************
 254  * D3DXVec4TransformArray
 255  */
 256 D3DXVECTOR4* WINAPI D3DXVec4TransformArray(
 257     D3DXVECTOR4* out, UINT outstride, CONST D3DXVECTOR4* in, UINT instride,
 258     CONST D3DXMATRIX* matrix, UINT elements)
 259 {
 260     UINT i;
 261     TRACE("\n");
 262     for (i = 0; i < elements; ++i) {
 263         D3DXVec4Transform(
 264             (D3DXVECTOR4*)((char*)out + outstride * i),
 265             (CONST D3DXVECTOR4*)((const char*)in + instride * i),
 266             matrix);
 267     }
 268     return out;
 269 }