2 * Mathematical operations specific to D3DX9.
4 * Copyright (C) 2008 David Adam
5 * Copyright (C) 2008 Luis Busquets
6 * Copyright (C) 2008 Jérôme Gardou
7 * Copyright (C) 2008 Philip Nilsson
8 * Copyright (C) 2008 Henri Verbeet
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
25 #define NONAMELESSUNION
30 #include "d3dx9_36_private.h"
32 #include "wine/debug.h"
34 WINE_DEFAULT_DEBUG_CHANNEL(d3dx);
36 static const ID3DXMatrixStackVtbl ID3DXMatrixStack_Vtbl;
38 /*_________________D3DXColor____________________*/
40 D3DXCOLOR* WINAPI D3DXColorAdjustContrast(D3DXCOLOR *pout, CONST D3DXCOLOR *pc, FLOAT s)
42 pout->r = 0.5f + s * (pc->r - 0.5f);
43 pout->g = 0.5f + s * (pc->g - 0.5f);
44 pout->b = 0.5f + s * (pc->b - 0.5f);
49 D3DXCOLOR* WINAPI D3DXColorAdjustSaturation(D3DXCOLOR *pout, CONST D3DXCOLOR *pc, FLOAT s)
53 grey = pc->r * 0.2125f + pc->g * 0.7154f + pc->b * 0.0721f;
54 pout->r = grey + s * (pc->r - grey);
55 pout->g = grey + s * (pc->g - grey);
56 pout->b = grey + s * (pc->b - grey);
61 /*_________________Misc__________________________*/
63 FLOAT WINAPI D3DXFresnelTerm(FLOAT costheta, FLOAT refractionindex)
65 FLOAT a, d, g, result;
67 g = sqrt(refractionindex * refractionindex + costheta * costheta - 1.0f);
70 result = ( costheta * a - 1.0f ) * ( costheta * a - 1.0f ) / ( ( costheta * d + 1.0f ) * ( costheta * d + 1.0f ) ) + 1.0f;
71 result = result * 0.5f * d * d / ( a * a );
75 /*_________________D3DXMatrix____________________*/
77 D3DXMATRIX* WINAPI D3DXMatrixAffineTransformation(D3DXMATRIX *pout, FLOAT scaling, CONST D3DXVECTOR3 *rotationcenter, CONST D3DXQUATERNION *rotation, CONST D3DXVECTOR3 *translation)
79 D3DXMATRIX m1, m2, m3, m4, m5;
81 D3DXMatrixScaling(&m1, scaling, scaling, scaling);
83 if ( !rotationcenter )
85 D3DXMatrixIdentity(&m2);
86 D3DXMatrixIdentity(&m4);
90 D3DXMatrixTranslation(&m2, -rotationcenter->x, -rotationcenter->y, -rotationcenter->z);
91 D3DXMatrixTranslation(&m4, rotationcenter->x, rotationcenter->y, rotationcenter->z);
94 if ( !rotation ) D3DXMatrixIdentity(&m3);
95 else D3DXMatrixRotationQuaternion(&m3, rotation);
97 if ( !translation ) D3DXMatrixIdentity(&m5);
98 else D3DXMatrixTranslation(&m5, translation->x, translation->y, translation->z);
100 D3DXMatrixMultiply(&m1, &m1, &m2);
101 D3DXMatrixMultiply(&m1, &m1, &m3);
102 D3DXMatrixMultiply(&m1, &m1, &m4);
103 D3DXMatrixMultiply(pout, &m1, &m5);
107 D3DXMATRIX* WINAPI D3DXMatrixAffineTransformation2D(D3DXMATRIX *pout, FLOAT scaling, CONST D3DXVECTOR2 *protationcenter, FLOAT rotation, CONST D3DXVECTOR2 *ptranslation)
109 D3DXMATRIX m1, m2, m3, m4, m5;
111 D3DXVECTOR3 rot_center, trans;
113 rot.w=cos(rotation/2.0f);
116 rot.z=sin(rotation/2.0f);
118 if ( protationcenter )
120 rot_center.x=protationcenter->x;
121 rot_center.y=protationcenter->y;
133 trans.x=ptranslation->x;
134 trans.y=ptranslation->y;
144 D3DXMatrixScaling(&m1, scaling, scaling, 1.0f);
145 D3DXMatrixTranslation(&m2, -rot_center.x, -rot_center.y, -rot_center.z);
146 D3DXMatrixTranslation(&m4, rot_center.x, rot_center.y, rot_center.z);
147 D3DXMatrixRotationQuaternion(&m3, &rot);
148 D3DXMatrixTranslation(&m5, trans.x, trans.y, trans.z);
150 D3DXMatrixMultiply(&m1, &m1, &m2);
151 D3DXMatrixMultiply(&m1, &m1, &m3);
152 D3DXMatrixMultiply(&m1, &m1, &m4);
153 D3DXMatrixMultiply(pout, &m1, &m5);
158 HRESULT WINAPI D3DXMatrixDecompose(D3DXVECTOR3 *poutscale, D3DXQUATERNION *poutrotation, D3DXVECTOR3 *pouttranslation, CONST D3DXMATRIX *pm)
160 D3DXMATRIX normalized;
163 /*Compute the scaling part.*/
167 poutscale->x=D3DXVec3Length(&vec);
172 poutscale->y=D3DXVec3Length(&vec);
177 poutscale->z=D3DXVec3Length(&vec);
179 /*Compute the translation part.*/
180 pouttranslation->x=pm->u.m[3][0];
181 pouttranslation->y=pm->u.m[3][1];
182 pouttranslation->z=pm->u.m[3][2];
184 /*Let's calculate the rotation now*/
185 if ( (poutscale->x == 0.0f) || (poutscale->y == 0.0f) || (poutscale->z == 0.0f) ) return D3DERR_INVALIDCALL;
187 normalized.u.m[0][0]=pm->u.m[0][0]/poutscale->x;
188 normalized.u.m[0][1]=pm->u.m[0][1]/poutscale->x;
189 normalized.u.m[0][2]=pm->u.m[0][2]/poutscale->x;
190 normalized.u.m[1][0]=pm->u.m[1][0]/poutscale->y;
191 normalized.u.m[1][1]=pm->u.m[1][1]/poutscale->y;
192 normalized.u.m[1][2]=pm->u.m[1][2]/poutscale->y;
193 normalized.u.m[2][0]=pm->u.m[2][0]/poutscale->z;
194 normalized.u.m[2][1]=pm->u.m[2][1]/poutscale->z;
195 normalized.u.m[2][2]=pm->u.m[2][2]/poutscale->z;
197 D3DXQuaternionRotationMatrix(poutrotation,&normalized);
201 FLOAT WINAPI D3DXMatrixDeterminant(CONST D3DXMATRIX *pm)
203 D3DXVECTOR4 minor, v1, v2, v3;
206 v1.x = pm->u.m[0][0]; v1.y = pm->u.m[1][0]; v1.z = pm->u.m[2][0]; v1.w = pm->u.m[3][0];
207 v2.x = pm->u.m[0][1]; v2.y = pm->u.m[1][1]; v2.z = pm->u.m[2][1]; v2.w = pm->u.m[3][1];
208 v3.x = pm->u.m[0][2]; v3.y = pm->u.m[1][2]; v3.z = pm->u.m[2][2]; v3.w = pm->u.m[3][2];
209 D3DXVec4Cross(&minor, &v1, &v2, &v3);
210 det = - (pm->u.m[0][3] * minor.x + pm->u.m[1][3] * minor.y + pm->u.m[2][3] * minor.z + pm->u.m[3][3] * minor.w);
214 D3DXMATRIX* WINAPI D3DXMatrixInverse(D3DXMATRIX *pout, FLOAT *pdeterminant, CONST D3DXMATRIX *pm)
218 D3DXVECTOR4 v, vec[3];
221 det = D3DXMatrixDeterminant(pm);
222 if ( !det ) return NULL;
223 if ( pdeterminant ) *pdeterminant = det;
231 if ( j > i ) a = a-1;
232 vec[a].x = pm->u.m[j][0];
233 vec[a].y = pm->u.m[j][1];
234 vec[a].z = pm->u.m[j][2];
235 vec[a].w = pm->u.m[j][3];
238 D3DXVec4Cross(&v, &vec[0], &vec[1], &vec[2]);
239 out.u.m[0][i] = pow(-1.0f, i) * v.x / det;
240 out.u.m[1][i] = pow(-1.0f, i) * v.y / det;
241 out.u.m[2][i] = pow(-1.0f, i) * v.z / det;
242 out.u.m[3][i] = pow(-1.0f, i) * v.w / det;
249 D3DXMATRIX* WINAPI D3DXMatrixLookAtLH(D3DXMATRIX *pout, CONST D3DXVECTOR3 *peye, CONST D3DXVECTOR3 *pat, CONST D3DXVECTOR3 *pup)
251 D3DXVECTOR3 right, rightn, up, upn, vec, vec2;
253 D3DXVec3Subtract(&vec2, pat, peye);
254 D3DXVec3Normalize(&vec, &vec2);
255 D3DXVec3Cross(&right, pup, &vec);
256 D3DXVec3Cross(&up, &vec, &right);
257 D3DXVec3Normalize(&rightn, &right);
258 D3DXVec3Normalize(&upn, &up);
259 pout->u.m[0][0] = rightn.x;
260 pout->u.m[1][0] = rightn.y;
261 pout->u.m[2][0] = rightn.z;
262 pout->u.m[3][0] = -D3DXVec3Dot(&rightn,peye);
263 pout->u.m[0][1] = upn.x;
264 pout->u.m[1][1] = upn.y;
265 pout->u.m[2][1] = upn.z;
266 pout->u.m[3][1] = -D3DXVec3Dot(&upn, peye);
267 pout->u.m[0][2] = vec.x;
268 pout->u.m[1][2] = vec.y;
269 pout->u.m[2][2] = vec.z;
270 pout->u.m[3][2] = -D3DXVec3Dot(&vec, peye);
271 pout->u.m[0][3] = 0.0f;
272 pout->u.m[1][3] = 0.0f;
273 pout->u.m[2][3] = 0.0f;
274 pout->u.m[3][3] = 1.0f;
278 D3DXMATRIX* WINAPI D3DXMatrixLookAtRH(D3DXMATRIX *pout, CONST D3DXVECTOR3 *peye, CONST D3DXVECTOR3 *pat, CONST D3DXVECTOR3 *pup)
280 D3DXVECTOR3 right, rightn, up, upn, vec, vec2;
282 D3DXVec3Subtract(&vec2, pat, peye);
283 D3DXVec3Normalize(&vec, &vec2);
284 D3DXVec3Cross(&right, pup, &vec);
285 D3DXVec3Cross(&up, &vec, &right);
286 D3DXVec3Normalize(&rightn, &right);
287 D3DXVec3Normalize(&upn, &up);
288 pout->u.m[0][0] = -rightn.x;
289 pout->u.m[1][0] = -rightn.y;
290 pout->u.m[2][0] = -rightn.z;
291 pout->u.m[3][0] = D3DXVec3Dot(&rightn,peye);
292 pout->u.m[0][1] = upn.x;
293 pout->u.m[1][1] = upn.y;
294 pout->u.m[2][1] = upn.z;
295 pout->u.m[3][1] = -D3DXVec3Dot(&upn, peye);
296 pout->u.m[0][2] = -vec.x;
297 pout->u.m[1][2] = -vec.y;
298 pout->u.m[2][2] = -vec.z;
299 pout->u.m[3][2] = D3DXVec3Dot(&vec, peye);
300 pout->u.m[0][3] = 0.0f;
301 pout->u.m[1][3] = 0.0f;
302 pout->u.m[2][3] = 0.0f;
303 pout->u.m[3][3] = 1.0f;
307 D3DXMATRIX* WINAPI D3DXMatrixMultiply(D3DXMATRIX *pout, CONST D3DXMATRIX *pm1, CONST D3DXMATRIX *pm2)
316 out.u.m[i][j] = pm1->u.m[i][0] * pm2->u.m[0][j] + pm1->u.m[i][1] * pm2->u.m[1][j] + pm1->u.m[i][2] * pm2->u.m[2][j] + pm1->u.m[i][3] * pm2->u.m[3][j];
324 D3DXMATRIX* WINAPI D3DXMatrixMultiplyTranspose(D3DXMATRIX *pout, CONST D3DXMATRIX *pm1, CONST D3DXMATRIX *pm2)
326 D3DXMatrixMultiply(pout, pm1, pm2);
327 D3DXMatrixTranspose(pout, pout);
331 D3DXMATRIX* WINAPI D3DXMatrixOrthoLH(D3DXMATRIX *pout, FLOAT w, FLOAT h, FLOAT zn, FLOAT zf)
333 D3DXMatrixIdentity(pout);
334 pout->u.m[0][0] = 2.0f / w;
335 pout->u.m[1][1] = 2.0f / h;
336 pout->u.m[2][2] = 1.0f / (zf - zn);
337 pout->u.m[3][2] = zn / (zn - zf);
341 D3DXMATRIX* WINAPI D3DXMatrixOrthoOffCenterLH(D3DXMATRIX *pout, FLOAT l, FLOAT r, FLOAT b, FLOAT t, FLOAT zn, FLOAT zf)
343 D3DXMatrixIdentity(pout);
344 pout->u.m[0][0] = 2.0f / (r - l);
345 pout->u.m[1][1] = 2.0f / (t - b);
346 pout->u.m[2][2] = 1.0f / (zf -zn);
347 pout->u.m[3][0] = -1.0f -2.0f *l / (r - l);
348 pout->u.m[3][1] = 1.0f + 2.0f * t / (b - t);
349 pout->u.m[3][2] = zn / (zn -zf);
353 D3DXMATRIX* WINAPI D3DXMatrixOrthoOffCenterRH(D3DXMATRIX *pout, FLOAT l, FLOAT r, FLOAT b, FLOAT t, FLOAT zn, FLOAT zf)
355 D3DXMatrixIdentity(pout);
356 pout->u.m[0][0] = 2.0f / (r - l);
357 pout->u.m[1][1] = 2.0f / (t - b);
358 pout->u.m[2][2] = 1.0f / (zn -zf);
359 pout->u.m[3][0] = -1.0f -2.0f *l / (r - l);
360 pout->u.m[3][1] = 1.0f + 2.0f * t / (b - t);
361 pout->u.m[3][2] = zn / (zn -zf);
365 D3DXMATRIX* WINAPI D3DXMatrixOrthoRH(D3DXMATRIX *pout, FLOAT w, FLOAT h, FLOAT zn, FLOAT zf)
367 D3DXMatrixIdentity(pout);
368 pout->u.m[0][0] = 2.0f / w;
369 pout->u.m[1][1] = 2.0f / h;
370 pout->u.m[2][2] = 1.0f / (zn - zf);
371 pout->u.m[3][2] = zn / (zn - zf);
375 D3DXMATRIX* WINAPI D3DXMatrixPerspectiveFovLH(D3DXMATRIX *pout, FLOAT fovy, FLOAT aspect, FLOAT zn, FLOAT zf)
377 D3DXMatrixIdentity(pout);
378 pout->u.m[0][0] = 1.0f / (aspect * tan(fovy/2.0f));
379 pout->u.m[1][1] = 1.0f / tan(fovy/2.0f);
380 pout->u.m[2][2] = zf / (zf - zn);
381 pout->u.m[2][3] = 1.0f;
382 pout->u.m[3][2] = (zf * zn) / (zn - zf);
383 pout->u.m[3][3] = 0.0f;
387 D3DXMATRIX* WINAPI D3DXMatrixPerspectiveFovRH(D3DXMATRIX *pout, FLOAT fovy, FLOAT aspect, FLOAT zn, FLOAT zf)
389 D3DXMatrixIdentity(pout);
390 pout->u.m[0][0] = 1.0f / (aspect * tan(fovy/2.0f));
391 pout->u.m[1][1] = 1.0f / tan(fovy/2.0f);
392 pout->u.m[2][2] = zf / (zn - zf);
393 pout->u.m[2][3] = -1.0f;
394 pout->u.m[3][2] = (zf * zn) / (zn - zf);
395 pout->u.m[3][3] = 0.0f;
399 D3DXMATRIX* WINAPI D3DXMatrixPerspectiveLH(D3DXMATRIX *pout, FLOAT w, FLOAT h, FLOAT zn, FLOAT zf)
401 D3DXMatrixIdentity(pout);
402 pout->u.m[0][0] = 2.0f * zn / w;
403 pout->u.m[1][1] = 2.0f * zn / h;
404 pout->u.m[2][2] = zf / (zf - zn);
405 pout->u.m[3][2] = (zn * zf) / (zn - zf);
406 pout->u.m[2][3] = 1.0f;
407 pout->u.m[3][3] = 0.0f;
411 D3DXMATRIX* WINAPI D3DXMatrixPerspectiveOffCenterLH(D3DXMATRIX *pout, FLOAT l, FLOAT r, FLOAT b, FLOAT t, FLOAT zn, FLOAT zf)
413 D3DXMatrixIdentity(pout);
414 pout->u.m[0][0] = 2.0f * zn / (r - l);
415 pout->u.m[1][1] = -2.0f * zn / (b - t);
416 pout->u.m[2][0] = -1.0f - 2.0f * l / (r - l);
417 pout->u.m[2][1] = 1.0f + 2.0f * t / (b - t);
418 pout->u.m[2][2] = - zf / (zn - zf);
419 pout->u.m[3][2] = (zn * zf) / (zn -zf);
420 pout->u.m[2][3] = 1.0f;
421 pout->u.m[3][3] = 0.0f;
425 D3DXMATRIX* WINAPI D3DXMatrixPerspectiveOffCenterRH(D3DXMATRIX *pout, FLOAT l, FLOAT r, FLOAT b, FLOAT t, FLOAT zn, FLOAT zf)
427 D3DXMatrixIdentity(pout);
428 pout->u.m[0][0] = 2.0f * zn / (r - l);
429 pout->u.m[1][1] = -2.0f * zn / (b - t);
430 pout->u.m[2][0] = 1.0f + 2.0f * l / (r - l);
431 pout->u.m[2][1] = -1.0f -2.0f * t / (b - t);
432 pout->u.m[2][2] = zf / (zn - zf);
433 pout->u.m[3][2] = (zn * zf) / (zn -zf);
434 pout->u.m[2][3] = -1.0f;
435 pout->u.m[3][3] = 0.0f;
439 D3DXMATRIX* WINAPI D3DXMatrixPerspectiveRH(D3DXMATRIX *pout, FLOAT w, FLOAT h, FLOAT zn, FLOAT zf)
441 D3DXMatrixIdentity(pout);
442 pout->u.m[0][0] = 2.0f * zn / w;
443 pout->u.m[1][1] = 2.0f * zn / h;
444 pout->u.m[2][2] = zf / (zn - zf);
445 pout->u.m[3][2] = (zn * zf) / (zn - zf);
446 pout->u.m[2][3] = -1.0f;
447 pout->u.m[3][3] = 0.0f;
451 D3DXMATRIX* WINAPI D3DXMatrixReflect(D3DXMATRIX *pout, CONST D3DXPLANE *pplane)
455 D3DXPlaneNormalize(&Nplane, pplane);
456 D3DXMatrixIdentity(pout);
457 pout->u.m[0][0] = 1.0f - 2.0f * Nplane.a * Nplane.a;
458 pout->u.m[0][1] = -2.0f * Nplane.a * Nplane.b;
459 pout->u.m[0][2] = -2.0f * Nplane.a * Nplane.c;
460 pout->u.m[1][0] = -2.0f * Nplane.a * Nplane.b;
461 pout->u.m[1][1] = 1.0f - 2.0f * Nplane.b * Nplane.b;
462 pout->u.m[1][2] = -2.0f * Nplane.b * Nplane.c;
463 pout->u.m[2][0] = -2.0f * Nplane.c * Nplane.a;
464 pout->u.m[2][1] = -2.0f * Nplane.c * Nplane.b;
465 pout->u.m[2][2] = 1.0f - 2.0f * Nplane.c * Nplane.c;
466 pout->u.m[3][0] = -2.0f * Nplane.d * Nplane.a;
467 pout->u.m[3][1] = -2.0f * Nplane.d * Nplane.b;
468 pout->u.m[3][2] = -2.0f * Nplane.d * Nplane.c;
472 D3DXMATRIX* WINAPI D3DXMatrixRotationAxis(D3DXMATRIX *pout, CONST D3DXVECTOR3 *pv, FLOAT angle)
476 D3DXVec3Normalize(&v,pv);
477 D3DXMatrixIdentity(pout);
478 pout->u.m[0][0] = (1.0f - cos(angle)) * v.x * v.x + cos(angle);
479 pout->u.m[1][0] = (1.0f - cos(angle)) * v.x * v.y - sin(angle) * v.z;
480 pout->u.m[2][0] = (1.0f - cos(angle)) * v.x * v.z + sin(angle) * v.y;
481 pout->u.m[0][1] = (1.0f - cos(angle)) * v.y * v.x + sin(angle) * v.z;
482 pout->u.m[1][1] = (1.0f - cos(angle)) * v.y * v.y + cos(angle);
483 pout->u.m[2][1] = (1.0f - cos(angle)) * v.y * v.z - sin(angle) * v.x;
484 pout->u.m[0][2] = (1.0f - cos(angle)) * v.z * v.x - sin(angle) * v.y;
485 pout->u.m[1][2] = (1.0f - cos(angle)) * v.z * v.y + sin(angle) * v.x;
486 pout->u.m[2][2] = (1.0f - cos(angle)) * v.z * v.z + cos(angle);
490 D3DXMATRIX* WINAPI D3DXMatrixRotationQuaternion(D3DXMATRIX *pout, CONST D3DXQUATERNION *pq)
492 D3DXMatrixIdentity(pout);
493 pout->u.m[0][0] = 1.0f - 2.0f * (pq->y * pq->y + pq->z * pq->z);
494 pout->u.m[0][1] = 2.0f * (pq->x *pq->y + pq->z * pq->w);
495 pout->u.m[0][2] = 2.0f * (pq->x * pq->z - pq->y * pq->w);
496 pout->u.m[1][0] = 2.0f * (pq->x * pq->y - pq->z * pq->w);
497 pout->u.m[1][1] = 1.0f - 2.0f * (pq->x * pq->x + pq->z * pq->z);
498 pout->u.m[1][2] = 2.0f * (pq->y *pq->z + pq->x *pq->w);
499 pout->u.m[2][0] = 2.0f * (pq->x * pq->z + pq->y * pq->w);
500 pout->u.m[2][1] = 2.0f * (pq->y *pq->z - pq->x *pq->w);
501 pout->u.m[2][2] = 1.0f - 2.0f * (pq->x * pq->x + pq->y * pq->y);
505 D3DXMATRIX* WINAPI D3DXMatrixRotationX(D3DXMATRIX *pout, FLOAT angle)
507 D3DXMatrixIdentity(pout);
508 pout->u.m[1][1] = cos(angle);
509 pout->u.m[2][2] = cos(angle);
510 pout->u.m[1][2] = sin(angle);
511 pout->u.m[2][1] = -sin(angle);
515 D3DXMATRIX* WINAPI D3DXMatrixRotationY(D3DXMATRIX *pout, FLOAT angle)
517 D3DXMatrixIdentity(pout);
518 pout->u.m[0][0] = cos(angle);
519 pout->u.m[2][2] = cos(angle);
520 pout->u.m[0][2] = -sin(angle);
521 pout->u.m[2][0] = sin(angle);
525 D3DXMATRIX* WINAPI D3DXMatrixRotationYawPitchRoll(D3DXMATRIX *pout, FLOAT yaw, FLOAT pitch, FLOAT roll)
529 D3DXMatrixIdentity(pout);
530 D3DXMatrixRotationZ(&m, roll);
531 D3DXMatrixMultiply(pout, pout, &m);
532 D3DXMatrixRotationX(&m, pitch);
533 D3DXMatrixMultiply(pout, pout, &m);
534 D3DXMatrixRotationY(&m, yaw);
535 D3DXMatrixMultiply(pout, pout, &m);
538 D3DXMATRIX* WINAPI D3DXMatrixRotationZ(D3DXMATRIX *pout, FLOAT angle)
540 D3DXMatrixIdentity(pout);
541 pout->u.m[0][0] = cos(angle);
542 pout->u.m[1][1] = cos(angle);
543 pout->u.m[0][1] = sin(angle);
544 pout->u.m[1][0] = -sin(angle);
548 D3DXMATRIX* WINAPI D3DXMatrixScaling(D3DXMATRIX *pout, FLOAT sx, FLOAT sy, FLOAT sz)
550 D3DXMatrixIdentity(pout);
551 pout->u.m[0][0] = sx;
552 pout->u.m[1][1] = sy;
553 pout->u.m[2][2] = sz;
557 D3DXMATRIX* WINAPI D3DXMatrixShadow(D3DXMATRIX *pout, CONST D3DXVECTOR4 *plight, CONST D3DXPLANE *pplane)
562 D3DXPlaneNormalize(&Nplane, pplane);
563 dot = D3DXPlaneDot(&Nplane, plight);
564 pout->u.m[0][0] = dot - Nplane.a * plight->x;
565 pout->u.m[0][1] = -Nplane.a * plight->y;
566 pout->u.m[0][2] = -Nplane.a * plight->z;
567 pout->u.m[0][3] = -Nplane.a * plight->w;
568 pout->u.m[1][0] = -Nplane.b * plight->x;
569 pout->u.m[1][1] = dot - Nplane.b * plight->y;
570 pout->u.m[1][2] = -Nplane.b * plight->z;
571 pout->u.m[1][3] = -Nplane.b * plight->w;
572 pout->u.m[2][0] = -Nplane.c * plight->x;
573 pout->u.m[2][1] = -Nplane.c * plight->y;
574 pout->u.m[2][2] = dot - Nplane.c * plight->z;
575 pout->u.m[2][3] = -Nplane.c * plight->w;
576 pout->u.m[3][0] = -Nplane.d * plight->x;
577 pout->u.m[3][1] = -Nplane.d * plight->y;
578 pout->u.m[3][2] = -Nplane.d * plight->z;
579 pout->u.m[3][3] = dot - Nplane.d * plight->w;
583 D3DXMATRIX* WINAPI D3DXMatrixTransformation(D3DXMATRIX *pout, CONST D3DXVECTOR3 *pscalingcenter, CONST D3DXQUATERNION *pscalingrotation, CONST D3DXVECTOR3 *pscaling, CONST D3DXVECTOR3 *protationcenter, CONST D3DXQUATERNION *protation, CONST D3DXVECTOR3 *ptranslation)
585 D3DXMATRIX m1, m2, m3, m4, m5, m6, m7;
589 if ( !pscalingcenter )
597 psc.x = pscalingcenter->x;
598 psc.y = pscalingcenter->y;
599 psc.z = pscalingcenter->z;
602 if ( !protationcenter )
610 prc.x = protationcenter->x;
611 prc.y = protationcenter->y;
612 prc.z = protationcenter->z;
623 pt.x = ptranslation->x;
624 pt.y = ptranslation->y;
625 pt.z = ptranslation->z;
628 D3DXMatrixTranslation(&m1, -psc.x, -psc.y, -psc.z);
630 if ( !pscalingrotation )
632 D3DXMatrixIdentity(&m2);
633 D3DXMatrixIdentity(&m4);
637 D3DXMatrixRotationQuaternion(&m4, pscalingrotation);
638 D3DXMatrixInverse(&m2, NULL, &m4);
641 if ( !pscaling ) D3DXMatrixIdentity(&m3);
642 else D3DXMatrixScaling(&m3, pscaling->x, pscaling->y, pscaling->z);
644 if ( !protation ) D3DXMatrixIdentity(&m6);
645 else D3DXMatrixRotationQuaternion(&m6, protation);
647 D3DXMatrixTranslation(&m5, psc.x - prc.x, psc.y - prc.y, psc.z - prc.z);
648 D3DXMatrixTranslation(&m7, prc.x + pt.x, prc.y + pt.y, prc.z + pt.z);
649 D3DXMatrixMultiply(&m1, &m1, &m2);
650 D3DXMatrixMultiply(&m1, &m1, &m3);
651 D3DXMatrixMultiply(&m1, &m1, &m4);
652 D3DXMatrixMultiply(&m1, &m1, &m5);
653 D3DXMatrixMultiply(&m1, &m1, &m6);
654 D3DXMatrixMultiply(pout, &m1, &m7);
657 D3DXMATRIX* WINAPI D3DXMatrixTransformation2D(D3DXMATRIX *pout, CONST D3DXVECTOR2 *pscalingcenter, FLOAT scalingrotation, CONST D3DXVECTOR2 *pscaling, CONST D3DXVECTOR2 *protationcenter, FLOAT rotation, CONST D3DXVECTOR2 *ptranslation)
659 D3DXQUATERNION rot, sca_rot;
660 D3DXVECTOR3 rot_center, sca, sca_center, trans;
662 if ( pscalingcenter )
664 sca_center.x=pscalingcenter->x;
665 sca_center.y=pscalingcenter->y;
688 if ( protationcenter )
690 rot_center.x=protationcenter->x;
691 rot_center.y=protationcenter->y;
703 trans.x=ptranslation->x;
704 trans.y=ptranslation->y;
714 rot.w=cos(rotation/2.0f);
717 rot.z=sin(rotation/2.0f);
719 sca_rot.w=cos(scalingrotation/2.0f);
722 sca_rot.z=sin(scalingrotation/2.0f);
724 D3DXMatrixTransformation(pout, &sca_center, &sca_rot, &sca, &rot_center, &rot, &trans);
729 D3DXMATRIX* WINAPI D3DXMatrixTranslation(D3DXMATRIX *pout, FLOAT x, FLOAT y, FLOAT z)
731 D3DXMatrixIdentity(pout);
738 D3DXMATRIX* WINAPI D3DXMatrixTranspose(D3DXMATRIX *pout, CONST D3DXMATRIX *pm)
740 CONST D3DXMATRIX m = *pm;
744 for (j=0; j<4; j++) pout->u.m[i][j] = m.u.m[j][i];
749 /*_________________D3DXMatrixStack____________________*/
751 static const unsigned int INITIAL_STACK_SIZE = 32;
753 HRESULT WINAPI D3DXCreateMatrixStack(DWORD flags, LPD3DXMATRIXSTACK* ppstack)
755 ID3DXMatrixStackImpl* object;
757 TRACE("flags %#x, ppstack %p\n", flags, ppstack);
759 object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(ID3DXMatrixStackImpl));
760 if ( object == NULL )
763 return E_OUTOFMEMORY;
765 object->lpVtbl = &ID3DXMatrixStack_Vtbl;
768 object->stack = HeapAlloc(GetProcessHeap(), 0, INITIAL_STACK_SIZE * sizeof(D3DXMATRIX));
771 HeapFree(GetProcessHeap(), 0, object);
773 return E_OUTOFMEMORY;
777 object->stack_size = INITIAL_STACK_SIZE;
778 D3DXMatrixIdentity(&object->stack[0]);
780 TRACE("Created matrix stack %p\n", object);
782 *ppstack = (LPD3DXMATRIXSTACK)object;
786 static HRESULT WINAPI ID3DXMatrixStackImpl_QueryInterface(ID3DXMatrixStack *iface, REFIID riid, void **ppobj)
788 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
789 if (IsEqualGUID(riid, &IID_IUnknown) || IsEqualGUID(riid, &IID_ID3DXMatrixStack))
791 ID3DXMatrixStack_AddRef(iface);
796 ERR("(%p)->(%s,%p),not found\n",This,debugstr_guid(riid),ppobj);
797 return E_NOINTERFACE;
800 static ULONG WINAPI ID3DXMatrixStackImpl_AddRef(ID3DXMatrixStack *iface)
802 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
803 ULONG ref = InterlockedIncrement(&This->ref);
804 TRACE("(%p) : AddRef from %d\n", This, ref - 1);
808 static ULONG WINAPI ID3DXMatrixStackImpl_Release(ID3DXMatrixStack* iface)
810 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
811 ULONG ref = InterlockedDecrement(&This->ref);
814 HeapFree(GetProcessHeap(), 0, This->stack);
815 HeapFree(GetProcessHeap(), 0, This);
817 TRACE("(%p) : ReleaseRef to %d\n", This, ref);
821 static D3DXMATRIX* WINAPI ID3DXMatrixStackImpl_GetTop(ID3DXMatrixStack *iface)
823 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
825 TRACE("iface %p\n", iface);
827 return &This->stack[This->current];
830 static HRESULT WINAPI ID3DXMatrixStackImpl_LoadIdentity(ID3DXMatrixStack *iface)
832 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
834 TRACE("iface %p\n", iface);
836 D3DXMatrixIdentity(&This->stack[This->current]);
841 static HRESULT WINAPI ID3DXMatrixStackImpl_LoadMatrix(ID3DXMatrixStack *iface, CONST D3DXMATRIX *pm)
843 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
845 TRACE("iface %p\n", iface);
847 This->stack[This->current] = *pm;
852 static HRESULT WINAPI ID3DXMatrixStackImpl_MultMatrix(ID3DXMatrixStack *iface, CONST D3DXMATRIX *pm)
854 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
856 TRACE("iface %p\n", iface);
858 D3DXMatrixMultiply(&This->stack[This->current], &This->stack[This->current], pm);
863 static HRESULT WINAPI ID3DXMatrixStackImpl_MultMatrixLocal(ID3DXMatrixStack *iface, CONST D3DXMATRIX *pm)
865 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
867 TRACE("iface %p\n", iface);
869 D3DXMatrixMultiply(&This->stack[This->current], pm, &This->stack[This->current]);
874 static HRESULT WINAPI ID3DXMatrixStackImpl_Pop(ID3DXMatrixStack *iface)
876 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
878 TRACE("iface %p\n", iface);
880 /* Popping the last element on the stack returns D3D_OK, but does nothing. */
881 if (!This->current) return D3D_OK;
883 if (This->current <= This->stack_size / 4 && This->stack_size >= INITIAL_STACK_SIZE * 2)
885 unsigned int new_size;
886 D3DXMATRIX *new_stack;
888 new_size = This->stack_size / 2;
889 new_stack = HeapReAlloc(GetProcessHeap(), 0, This->stack, new_size * sizeof(D3DXMATRIX));
892 This->stack_size = new_size;
893 This->stack = new_stack;
902 static HRESULT WINAPI ID3DXMatrixStackImpl_Push(ID3DXMatrixStack *iface)
904 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
906 TRACE("iface %p\n", iface);
908 if (This->current == This->stack_size - 1)
910 unsigned int new_size;
911 D3DXMATRIX *new_stack;
913 if (This->stack_size > UINT_MAX / 2) return E_OUTOFMEMORY;
915 new_size = This->stack_size * 2;
916 new_stack = HeapReAlloc(GetProcessHeap(), 0, This->stack, new_size * sizeof(D3DXMATRIX));
917 if (!new_stack) return E_OUTOFMEMORY;
919 This->stack_size = new_size;
920 This->stack = new_stack;
924 This->stack[This->current] = This->stack[This->current - 1];
929 static HRESULT WINAPI ID3DXMatrixStackImpl_RotateAxis(ID3DXMatrixStack *iface, CONST D3DXVECTOR3 *pv, FLOAT angle)
932 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
934 TRACE("iface %p\n", iface);
936 if (!pv) return D3DERR_INVALIDCALL;
937 D3DXMatrixRotationAxis(&temp, pv, angle);
938 D3DXMatrixMultiply(&This->stack[This->current], &This->stack[This->current], &temp);
943 static HRESULT WINAPI ID3DXMatrixStackImpl_RotateAxisLocal(ID3DXMatrixStack *iface, CONST D3DXVECTOR3 *pv, FLOAT angle)
946 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
948 TRACE("iface %p\n", iface);
950 if (!pv) return D3DERR_INVALIDCALL;
951 D3DXMatrixRotationAxis(&temp, pv, angle);
952 D3DXMatrixMultiply(&This->stack[This->current], &temp, &This->stack[This->current]);
957 static HRESULT WINAPI ID3DXMatrixStackImpl_RotateYawPitchRoll(ID3DXMatrixStack *iface, FLOAT x, FLOAT y, FLOAT z)
960 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
962 TRACE("iface %p\n", iface);
964 D3DXMatrixRotationYawPitchRoll(&temp, x, y, z);
965 D3DXMatrixMultiply(&This->stack[This->current], &This->stack[This->current], &temp);
970 static HRESULT WINAPI ID3DXMatrixStackImpl_RotateYawPitchRollLocal(ID3DXMatrixStack *iface, FLOAT x, FLOAT y, FLOAT z)
973 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
975 TRACE("iface %p\n", iface);
977 D3DXMatrixRotationYawPitchRoll(&temp, x, y, z);
978 D3DXMatrixMultiply(&This->stack[This->current], &temp, &This->stack[This->current]);
983 static HRESULT WINAPI ID3DXMatrixStackImpl_Scale(ID3DXMatrixStack *iface, FLOAT x, FLOAT y, FLOAT z)
986 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
988 TRACE("iface %p\n", iface);
990 D3DXMatrixScaling(&temp, x, y, z);
991 D3DXMatrixMultiply(&This->stack[This->current], &This->stack[This->current], &temp);
996 static HRESULT WINAPI ID3DXMatrixStackImpl_ScaleLocal(ID3DXMatrixStack *iface, FLOAT x, FLOAT y, FLOAT z)
999 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
1001 TRACE("iface %p\n", iface);
1003 D3DXMatrixScaling(&temp, x, y, z);
1004 D3DXMatrixMultiply(&This->stack[This->current], &temp, &This->stack[This->current]);
1009 static HRESULT WINAPI ID3DXMatrixStackImpl_Translate(ID3DXMatrixStack *iface, FLOAT x, FLOAT y, FLOAT z)
1012 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
1014 TRACE("iface %p\n", iface);
1016 D3DXMatrixTranslation(&temp, x, y, z);
1017 D3DXMatrixMultiply(&This->stack[This->current], &This->stack[This->current], &temp);
1022 static HRESULT WINAPI ID3DXMatrixStackImpl_TranslateLocal(ID3DXMatrixStack *iface, FLOAT x, FLOAT y, FLOAT z)
1025 ID3DXMatrixStackImpl *This = (ID3DXMatrixStackImpl *)iface;
1027 TRACE("iface %p\n", iface);
1029 D3DXMatrixTranslation(&temp, x, y, z);
1030 D3DXMatrixMultiply(&This->stack[This->current], &temp,&This->stack[This->current]);
1035 static const ID3DXMatrixStackVtbl ID3DXMatrixStack_Vtbl =
1037 ID3DXMatrixStackImpl_QueryInterface,
1038 ID3DXMatrixStackImpl_AddRef,
1039 ID3DXMatrixStackImpl_Release,
1040 ID3DXMatrixStackImpl_Pop,
1041 ID3DXMatrixStackImpl_Push,
1042 ID3DXMatrixStackImpl_LoadIdentity,
1043 ID3DXMatrixStackImpl_LoadMatrix,
1044 ID3DXMatrixStackImpl_MultMatrix,
1045 ID3DXMatrixStackImpl_MultMatrixLocal,
1046 ID3DXMatrixStackImpl_RotateAxis,
1047 ID3DXMatrixStackImpl_RotateAxisLocal,
1048 ID3DXMatrixStackImpl_RotateYawPitchRoll,
1049 ID3DXMatrixStackImpl_RotateYawPitchRollLocal,
1050 ID3DXMatrixStackImpl_Scale,
1051 ID3DXMatrixStackImpl_ScaleLocal,
1052 ID3DXMatrixStackImpl_Translate,
1053 ID3DXMatrixStackImpl_TranslateLocal,
1054 ID3DXMatrixStackImpl_GetTop
1057 /*_________________D3DXPLANE________________*/
1059 D3DXPLANE* WINAPI D3DXPlaneFromPointNormal(D3DXPLANE *pout, CONST D3DXVECTOR3 *pvpoint, CONST D3DXVECTOR3 *pvnormal)
1061 pout->a = pvnormal->x;
1062 pout->b = pvnormal->y;
1063 pout->c = pvnormal->z;
1064 pout->d = -D3DXVec3Dot(pvpoint, pvnormal);
1068 D3DXPLANE* WINAPI D3DXPlaneFromPoints(D3DXPLANE *pout, CONST D3DXVECTOR3 *pv1, CONST D3DXVECTOR3 *pv2, CONST D3DXVECTOR3 *pv3)
1070 D3DXVECTOR3 edge1, edge2, normal, Nnormal;
1072 edge1.x = 0.0f; edge1.y = 0.0f; edge1.z = 0.0f;
1073 edge2.x = 0.0f; edge2.y = 0.0f; edge2.z = 0.0f;
1074 D3DXVec3Subtract(&edge1, pv2, pv1);
1075 D3DXVec3Subtract(&edge2, pv3, pv1);
1076 D3DXVec3Cross(&normal, &edge1, &edge2);
1077 D3DXVec3Normalize(&Nnormal, &normal);
1078 D3DXPlaneFromPointNormal(pout, pv1, &Nnormal);
1082 D3DXVECTOR3* WINAPI D3DXPlaneIntersectLine(D3DXVECTOR3 *pout, CONST D3DXPLANE *pp, CONST D3DXVECTOR3 *pv1, CONST D3DXVECTOR3 *pv2)
1084 D3DXVECTOR3 direction, normal;
1090 direction.x = pv2->x - pv1->x;
1091 direction.y = pv2->y - pv1->y;
1092 direction.z = pv2->z - pv1->z;
1093 dot = D3DXVec3Dot(&normal, &direction);
1094 if ( !dot ) return NULL;
1095 temp = ( pp->d + D3DXVec3Dot(&normal, pv1) ) / dot;
1096 pout->x = pv1->x - temp * direction.x;
1097 pout->y = pv1->y - temp * direction.y;
1098 pout->z = pv1->z - temp * direction.z;
1102 D3DXPLANE* WINAPI D3DXPlaneNormalize(D3DXPLANE *pout, CONST D3DXPLANE *pp)
1107 norm = sqrt(pp->a * pp->a + pp->b * pp->b + pp->c * pp->c);
1110 out.a = pp->a / norm;
1111 out.b = pp->b / norm;
1112 out.c = pp->c / norm;
1113 out.d = pp->d / norm;
1126 D3DXPLANE* WINAPI D3DXPlaneTransform(D3DXPLANE *pout, CONST D3DXPLANE *pplane, CONST D3DXMATRIX *pm)
1128 CONST D3DXPLANE plane = *pplane;
1129 pout->a = pm->u.m[0][0] * plane.a + pm->u.m[1][0] * plane.b + pm->u.m[2][0] * plane.c + pm->u.m[3][0] * plane.d;
1130 pout->b = pm->u.m[0][1] * plane.a + pm->u.m[1][1] * plane.b + pm->u.m[2][1] * plane.c + pm->u.m[3][1] * plane.d;
1131 pout->c = pm->u.m[0][2] * plane.a + pm->u.m[1][2] * plane.b + pm->u.m[2][2] * plane.c + pm->u.m[3][2] * plane.d;
1132 pout->d = pm->u.m[0][3] * plane.a + pm->u.m[1][3] * plane.b + pm->u.m[2][3] * plane.c + pm->u.m[3][3] * plane.d;
1136 D3DXPLANE* WINAPI D3DXPlaneTransformArray(D3DXPLANE* out, UINT outstride, CONST D3DXPLANE* in, UINT instride, CONST D3DXMATRIX* matrix, UINT elements)
1140 for (i = 0; i < elements; ++i) {
1142 (D3DXPLANE*)((char*)out + outstride * i),
1143 (CONST D3DXPLANE*)((const char*)in + instride * i),
1149 /*_________________D3DXQUATERNION________________*/
1151 D3DXQUATERNION* WINAPI D3DXQuaternionBaryCentric(D3DXQUATERNION *pout, CONST D3DXQUATERNION *pq1, CONST D3DXQUATERNION *pq2, CONST D3DXQUATERNION *pq3, FLOAT f, FLOAT g)
1153 D3DXQUATERNION temp1, temp2;
1154 D3DXQuaternionSlerp(pout, D3DXQuaternionSlerp(&temp1, pq1, pq2, f + g), D3DXQuaternionSlerp(&temp2, pq1, pq3, f+g), g / (f + g));
1158 D3DXQUATERNION* WINAPI D3DXQuaternionExp(D3DXQUATERNION *pout, CONST D3DXQUATERNION *pq)
1162 norm = sqrt(pq->x * pq->x + pq->y * pq->y + pq->z * pq->z);
1165 pout->x = sin(norm) * pq->x / norm;
1166 pout->y = sin(norm) * pq->y / norm;
1167 pout->z = sin(norm) * pq->z / norm;
1168 pout->w = cos(norm);
1180 D3DXQUATERNION* WINAPI D3DXQuaternionInverse(D3DXQUATERNION *pout, CONST D3DXQUATERNION *pq)
1185 norm = D3DXQuaternionLengthSq(pq);
1187 out.x = -pq->x / norm;
1188 out.y = -pq->y / norm;
1189 out.z = -pq->z / norm;
1190 out.w = pq->w / norm;
1196 D3DXQUATERNION* WINAPI D3DXQuaternionLn(D3DXQUATERNION *pout, CONST D3DXQUATERNION *pq)
1198 FLOAT norm, normvec, theta;
1200 norm = D3DXQuaternionLengthSq(pq);
1201 if ( norm > 1.0001f )
1208 else if( norm > 0.99999f)
1210 normvec = sqrt( pq->x * pq->x + pq->y * pq->y + pq->z * pq->z );
1211 theta = atan2(normvec, pq->w) / normvec;
1212 pout->x = theta * pq->x;
1213 pout->y = theta * pq->y;
1214 pout->z = theta * pq->z;
1219 FIXME("The quaternion (%f, %f, %f, %f) has a norm <1. This should not happen. Windows returns a result anyway. This case is not implemented yet.\n", pq->x, pq->y, pq->z, pq->w);
1224 D3DXQUATERNION* WINAPI D3DXQuaternionMultiply(D3DXQUATERNION *pout, CONST D3DXQUATERNION *pq1, CONST D3DXQUATERNION *pq2)
1227 out.x = pq2->w * pq1->x + pq2->x * pq1->w + pq2->y * pq1->z - pq2->z * pq1->y;
1228 out.y = pq2->w * pq1->y - pq2->x * pq1->z + pq2->y * pq1->w + pq2->z * pq1->x;
1229 out.z = pq2->w * pq1->z + pq2->x * pq1->y - pq2->y * pq1->x + pq2->z * pq1->w;
1230 out.w = pq2->w * pq1->w - pq2->x * pq1->x - pq2->y * pq1->y - pq2->z * pq1->z;
1235 D3DXQUATERNION* WINAPI D3DXQuaternionNormalize(D3DXQUATERNION *pout, CONST D3DXQUATERNION *pq)
1240 norm = D3DXQuaternionLength(pq);
1242 out.x = pq->x / norm;
1243 out.y = pq->y / norm;
1244 out.z = pq->z / norm;
1245 out.w = pq->w / norm;
1252 D3DXQUATERNION* WINAPI D3DXQuaternionRotationAxis(D3DXQUATERNION *pout, CONST D3DXVECTOR3 *pv, FLOAT angle)
1256 D3DXVec3Normalize(&temp, pv);
1257 pout->x = sin( angle / 2.0f ) * temp.x;
1258 pout->y = sin( angle / 2.0f ) * temp.y;
1259 pout->z = sin( angle / 2.0f ) * temp.z;
1260 pout->w = cos( angle / 2.0f );
1264 D3DXQUATERNION* WINAPI D3DXQuaternionRotationMatrix(D3DXQUATERNION *pout, CONST D3DXMATRIX *pm)
1267 FLOAT maxdiag, S, trace;
1269 trace = pm->u.m[0][0] + pm->u.m[1][1] + pm->u.m[2][2] + 1.0f;
1272 pout->x = ( pm->u.m[1][2] - pm->u.m[2][1] ) / ( 2.0f * sqrt(trace) );
1273 pout->y = ( pm->u.m[2][0] - pm->u.m[0][2] ) / ( 2.0f * sqrt(trace) );
1274 pout->z = ( pm->u.m[0][1] - pm->u.m[1][0] ) / ( 2.0f * sqrt(trace) );
1275 pout->w = sqrt(trace) / 2.0f;
1279 maxdiag = pm->u.m[0][0];
1282 if ( pm->u.m[i][i] > maxdiag )
1285 maxdiag = pm->u.m[i][i];
1291 S = 2.0f * sqrt(1.0f + pm->u.m[0][0] - pm->u.m[1][1] - pm->u.m[2][2]);
1292 pout->x = 0.25f * S;
1293 pout->y = ( pm->u.m[0][1] + pm->u.m[1][0] ) / S;
1294 pout->z = ( pm->u.m[0][2] + pm->u.m[2][0] ) / S;
1295 pout->w = ( pm->u.m[1][2] - pm->u.m[2][1] ) / S;
1298 S = 2.0f * sqrt(1.0f + pm->u.m[1][1] - pm->u.m[0][0] - pm->u.m[2][2]);
1299 pout->x = ( pm->u.m[0][1] + pm->u.m[1][0] ) / S;
1300 pout->y = 0.25f * S;
1301 pout->z = ( pm->u.m[1][2] + pm->u.m[2][1] ) / S;
1302 pout->w = ( pm->u.m[2][0] - pm->u.m[0][2] ) / S;
1305 S = 2.0f * sqrt(1.0f + pm->u.m[2][2] - pm->u.m[0][0] - pm->u.m[1][1]);
1306 pout->x = ( pm->u.m[0][2] + pm->u.m[2][0] ) / S;
1307 pout->y = ( pm->u.m[1][2] + pm->u.m[2][1] ) / S;
1308 pout->z = 0.25f * S;
1309 pout->w = ( pm->u.m[0][1] - pm->u.m[1][0] ) / S;
1315 D3DXQUATERNION* WINAPI D3DXQuaternionRotationYawPitchRoll(D3DXQUATERNION *pout, FLOAT yaw, FLOAT pitch, FLOAT roll)
1317 pout->x = sin( yaw / 2.0f) * cos(pitch / 2.0f) * sin(roll / 2.0f) + cos(yaw / 2.0f) * sin(pitch / 2.0f) * cos(roll / 2.0f);
1318 pout->y = sin( yaw / 2.0f) * cos(pitch / 2.0f) * cos(roll / 2.0f) - cos(yaw / 2.0f) * sin(pitch / 2.0f) * sin(roll / 2.0f);
1319 pout->z = cos(yaw / 2.0f) * cos(pitch / 2.0f) * sin(roll / 2.0f) - sin( yaw / 2.0f) * sin(pitch / 2.0f) * cos(roll / 2.0f);
1320 pout->w = cos( yaw / 2.0f) * cos(pitch / 2.0f) * cos(roll / 2.0f) + sin(yaw / 2.0f) * sin(pitch / 2.0f) * sin(roll / 2.0f);
1324 D3DXQUATERNION* WINAPI D3DXQuaternionSlerp(D3DXQUATERNION *pout, CONST D3DXQUATERNION *pq1, CONST D3DXQUATERNION *pq2, FLOAT t)
1326 FLOAT dot, epsilon, temp, theta, u;
1331 dot = D3DXQuaternionDot(pq1, pq2);
1337 if( 1.0f - dot > 0.001f )
1340 temp = sin(theta * temp) / sin(theta);
1341 u = sin(theta * u) / sin(theta);
1343 pout->x = temp * pq1->x + epsilon * u * pq2->x;
1344 pout->y = temp * pq1->y + epsilon * u * pq2->y;
1345 pout->z = temp * pq1->z + epsilon * u * pq2->z;
1346 pout->w = temp * pq1->w + epsilon * u * pq2->w;
1350 D3DXQUATERNION* WINAPI D3DXQuaternionSquad(D3DXQUATERNION *pout, CONST D3DXQUATERNION *pq1, CONST D3DXQUATERNION *pq2, CONST D3DXQUATERNION *pq3, CONST D3DXQUATERNION *pq4, FLOAT t)
1352 D3DXQUATERNION temp1, temp2;
1354 D3DXQuaternionSlerp(pout, D3DXQuaternionSlerp(&temp1, pq1, pq4, t), D3DXQuaternionSlerp(&temp2, pq2, pq3, t), 2.0f * t * (1.0f - t));
1358 void WINAPI D3DXQuaternionToAxisAngle(CONST D3DXQUATERNION *pq, D3DXVECTOR3 *paxis, FLOAT *pangle)
1363 *pangle = 2.0f * acos(pq->w);
1366 /*_________________D3DXVec2_____________________*/
1368 D3DXVECTOR2* WINAPI D3DXVec2BaryCentric(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv1, CONST D3DXVECTOR2 *pv2, CONST D3DXVECTOR2 *pv3, FLOAT f, FLOAT g)
1370 pout->x = (1.0f-f-g) * (pv1->x) + f * (pv2->x) + g * (pv3->x);
1371 pout->y = (1.0f-f-g) * (pv1->y) + f * (pv2->y) + g * (pv3->y);
1375 D3DXVECTOR2* WINAPI D3DXVec2CatmullRom(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv0, CONST D3DXVECTOR2 *pv1, CONST D3DXVECTOR2 *pv2, CONST D3DXVECTOR2 *pv3, FLOAT s)
1377 pout->x = 0.5f * (2.0f * pv1->x + (pv2->x - pv0->x) *s + (2.0f *pv0->x - 5.0f * pv1->x + 4.0f * pv2->x - pv3->x) * s * s + (pv3->x -3.0f * pv2->x + 3.0f * pv1->x - pv0->x) * s * s * s);
1378 pout->y = 0.5f * (2.0f * pv1->y + (pv2->y - pv0->y) *s + (2.0f *pv0->y - 5.0f * pv1->y + 4.0f * pv2->y - pv3->y) * s * s + (pv3->y -3.0f * pv2->y + 3.0f * pv1->y - pv0->y) * s * s * s);
1382 D3DXVECTOR2* WINAPI D3DXVec2Hermite(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv1, CONST D3DXVECTOR2 *pt1, CONST D3DXVECTOR2 *pv2, CONST D3DXVECTOR2 *pt2, FLOAT s)
1384 FLOAT h1, h2, h3, h4;
1386 h1 = 2.0f * s * s * s - 3.0f * s * s + 1.0f;
1387 h2 = s * s * s - 2.0f * s * s + s;
1388 h3 = -2.0f * s * s * s + 3.0f * s * s;
1389 h4 = s * s * s - s * s;
1391 pout->x = h1 * (pv1->x) + h2 * (pt1->x) + h3 * (pv2->x) + h4 * (pt2->x);
1392 pout->y = h1 * (pv1->y) + h2 * (pt1->y) + h3 * (pv2->y) + h4 * (pt2->y);
1396 D3DXVECTOR2* WINAPI D3DXVec2Normalize(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv)
1401 norm = D3DXVec2Length(pv);
1409 out.x = pv->x / norm;
1410 out.y = pv->y / norm;
1416 D3DXVECTOR4* WINAPI D3DXVec2Transform(D3DXVECTOR4 *pout, CONST D3DXVECTOR2 *pv, CONST D3DXMATRIX *pm)
1418 pout->x = pm->u.m[0][0] * pv->x + pm->u.m[1][0] * pv->y + pm->u.m[3][0];
1419 pout->y = pm->u.m[0][1] * pv->x + pm->u.m[1][1] * pv->y + pm->u.m[3][1];
1420 pout->z = pm->u.m[0][2] * pv->x + pm->u.m[1][2] * pv->y + pm->u.m[3][2];
1421 pout->w = pm->u.m[0][3] * pv->x + pm->u.m[1][3] * pv->y + pm->u.m[3][3];
1425 D3DXVECTOR4* WINAPI D3DXVec2TransformArray(D3DXVECTOR4* out, UINT outstride, CONST D3DXVECTOR2* in, UINT instride, CONST D3DXMATRIX* matrix, UINT elements)
1429 for (i = 0; i < elements; ++i) {
1431 (D3DXVECTOR4*)((char*)out + outstride * i),
1432 (CONST D3DXVECTOR2*)((const char*)in + instride * i),
1438 D3DXVECTOR2* WINAPI D3DXVec2TransformCoord(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv, CONST D3DXMATRIX *pm)
1444 norm = pm->u.m[0][3] * pv->x + pm->u.m[1][3] * pv->y + pm->u.m[3][3];
1446 pout->x = (pm->u.m[0][0] * v.x + pm->u.m[1][0] * v.y + pm->u.m[3][0]) / norm;
1447 pout->y = (pm->u.m[0][1] * v.x + pm->u.m[1][1] * v.y + pm->u.m[3][1]) / norm;
1452 D3DXVECTOR2* WINAPI D3DXVec2TransformCoordArray(D3DXVECTOR2* out, UINT outstride, CONST D3DXVECTOR2* in, UINT instride, CONST D3DXMATRIX* matrix, UINT elements)
1456 for (i = 0; i < elements; ++i) {
1457 D3DXVec2TransformCoord(
1458 (D3DXVECTOR2*)((char*)out + outstride * i),
1459 (CONST D3DXVECTOR2*)((const char*)in + instride * i),
1465 D3DXVECTOR2* WINAPI D3DXVec2TransformNormal(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv, CONST D3DXMATRIX *pm)
1467 CONST D3DXVECTOR2 v = *pv;
1468 pout->x = pm->u.m[0][0] * v.x + pm->u.m[1][0] * v.y;
1469 pout->y = pm->u.m[0][1] * v.x + pm->u.m[1][1] * v.y;
1473 D3DXVECTOR2* WINAPI D3DXVec2TransformNormalArray(D3DXVECTOR2* out, UINT outstride, CONST D3DXVECTOR2 *in, UINT instride, CONST D3DXMATRIX *matrix, UINT elements)
1477 for (i = 0; i < elements; ++i) {
1478 D3DXVec2TransformNormal(
1479 (D3DXVECTOR2*)((char*)out + outstride * i),
1480 (CONST D3DXVECTOR2*)((const char*)in + instride * i),
1486 /*_________________D3DXVec3_____________________*/
1488 D3DXVECTOR3* WINAPI D3DXVec3BaryCentric(D3DXVECTOR3 *pout, CONST D3DXVECTOR3 *pv1, CONST D3DXVECTOR3 *pv2, CONST D3DXVECTOR3 *pv3, FLOAT f, FLOAT g)
1490 pout->x = (1.0f-f-g) * (pv1->x) + f * (pv2->x) + g * (pv3->x);
1491 pout->y = (1.0f-f-g) * (pv1->y) + f * (pv2->y) + g * (pv3->y);
1492 pout->z = (1.0f-f-g) * (pv1->z) + f * (pv2->z) + g * (pv3->z);
1496 D3DXVECTOR3* WINAPI D3DXVec3CatmullRom( D3DXVECTOR3 *pout, CONST D3DXVECTOR3 *pv0, CONST D3DXVECTOR3 *pv1, CONST D3DXVECTOR3 *pv2, CONST D3DXVECTOR3 *pv3, FLOAT s)
1498 pout->x = 0.5f * (2.0f * pv1->x + (pv2->x - pv0->x) *s + (2.0f *pv0->x - 5.0f * pv1->x + 4.0f * pv2->x - pv3->x) * s * s + (pv3->x -3.0f * pv2->x + 3.0f * pv1->x - pv0->x) * s * s * s);
1499 pout->y = 0.5f * (2.0f * pv1->y + (pv2->y - pv0->y) *s + (2.0f *pv0->y - 5.0f * pv1->y + 4.0f * pv2->y - pv3->y) * s * s + (pv3->y -3.0f * pv2->y + 3.0f * pv1->y - pv0->y) * s * s * s);
1500 pout->z = 0.5f * (2.0f * pv1->z + (pv2->z - pv0->z) *s + (2.0f *pv0->z - 5.0f * pv1->z + 4.0f * pv2->z - pv3->z) * s * s + (pv3->z -3.0f * pv2->z + 3.0f * pv1->z - pv0->z) * s * s * s);
1504 D3DXVECTOR3* WINAPI D3DXVec3Hermite(D3DXVECTOR3 *pout, CONST D3DXVECTOR3 *pv1, CONST D3DXVECTOR3 *pt1, CONST D3DXVECTOR3 *pv2, CONST D3DXVECTOR3 *pt2, FLOAT s)
1506 FLOAT h1, h2, h3, h4;
1508 h1 = 2.0f * s * s * s - 3.0f * s * s + 1.0f;
1509 h2 = s * s * s - 2.0f * s * s + s;
1510 h3 = -2.0f * s * s * s + 3.0f * s * s;
1511 h4 = s * s * s - s * s;
1513 pout->x = h1 * (pv1->x) + h2 * (pt1->x) + h3 * (pv2->x) + h4 * (pt2->x);
1514 pout->y = h1 * (pv1->y) + h2 * (pt1->y) + h3 * (pv2->y) + h4 * (pt2->y);
1515 pout->z = h1 * (pv1->z) + h2 * (pt1->z) + h3 * (pv2->z) + h4 * (pt2->z);
1519 D3DXVECTOR3* WINAPI D3DXVec3Normalize(D3DXVECTOR3 *pout, CONST D3DXVECTOR3 *pv)
1524 norm = D3DXVec3Length(pv);
1533 out.x = pv->x / norm;
1534 out.y = pv->y / norm;
1535 out.z = pv->z / norm;
1541 D3DXVECTOR3* WINAPI D3DXVec3Project(D3DXVECTOR3 *pout, CONST D3DXVECTOR3 *pv, CONST D3DVIEWPORT9 *pviewport, CONST D3DXMATRIX *pprojection, CONST D3DXMATRIX *pview, CONST D3DXMATRIX *pworld)
1546 D3DXMatrixMultiply(&m, pworld, pview);
1547 D3DXMatrixMultiply(&m, &m, pprojection);
1548 D3DXVec3TransformCoord(&out, pv, &m);
1549 out.x = pviewport->X + ( 1.0f + out.x ) * pviewport->Width / 2.0f;
1550 out.y = pviewport->Y + ( 1.0f - out.y ) * pviewport->Height / 2.0f;
1551 out.z = pviewport->MinZ + out.z * ( pviewport->MaxZ - pviewport->MinZ );
1556 D3DXVECTOR3* WINAPI D3DXVec3ProjectArray(D3DXVECTOR3* out, UINT outstride, CONST D3DXVECTOR3* in, UINT instride, CONST D3DVIEWPORT9* viewport, CONST D3DXMATRIX* projection, CONST D3DXMATRIX* view, CONST D3DXMATRIX* world, UINT elements)
1560 for (i = 0; i < elements; ++i) {
1562 (D3DXVECTOR3*)((char*)out + outstride * i),
1563 (CONST D3DXVECTOR3*)((const char*)in + instride * i),
1564 viewport, projection, view, world);
1569 D3DXVECTOR4* WINAPI D3DXVec3Transform(D3DXVECTOR4 *pout, CONST D3DXVECTOR3 *pv, CONST D3DXMATRIX *pm)
1571 pout->x = pm->u.m[0][0] * pv->x + pm->u.m[1][0] * pv->y + pm->u.m[2][0] * pv->z + pm->u.m[3][0];
1572 pout->y = pm->u.m[0][1] * pv->x + pm->u.m[1][1] * pv->y + pm->u.m[2][1] * pv->z + pm->u.m[3][1];
1573 pout->z = pm->u.m[0][2] * pv->x + pm->u.m[1][2] * pv->y + pm->u.m[2][2] * pv->z + pm->u.m[3][2];
1574 pout->w = pm->u.m[0][3] * pv->x + pm->u.m[1][3] * pv->y + pm->u.m[2][3] * pv->z + pm->u.m[3][3];
1578 D3DXVECTOR4* WINAPI D3DXVec3TransformArray(D3DXVECTOR4* out, UINT outstride, CONST D3DXVECTOR3* in, UINT instride, CONST D3DXMATRIX* matrix, UINT elements)
1582 for (i = 0; i < elements; ++i) {
1584 (D3DXVECTOR4*)((char*)out + outstride * i),
1585 (CONST D3DXVECTOR3*)((const char*)in + instride * i),
1591 D3DXVECTOR3* WINAPI D3DXVec3TransformCoord(D3DXVECTOR3 *pout, CONST D3DXVECTOR3 *pv, CONST D3DXMATRIX *pm)
1596 norm = pm->u.m[0][3] * pv->x + pm->u.m[1][3] * pv->y + pm->u.m[2][3] *pv->z + pm->u.m[3][3];
1598 out.x = (pm->u.m[0][0] * pv->x + pm->u.m[1][0] * pv->y + pm->u.m[2][0] * pv->z + pm->u.m[3][0]) / norm;
1599 out.y = (pm->u.m[0][1] * pv->x + pm->u.m[1][1] * pv->y + pm->u.m[2][1] * pv->z + pm->u.m[3][1]) / norm;
1600 out.z = (pm->u.m[0][2] * pv->x + pm->u.m[1][2] * pv->y + pm->u.m[2][2] * pv->z + pm->u.m[3][2]) / norm;
1607 D3DXVECTOR3* WINAPI D3DXVec3TransformCoordArray(D3DXVECTOR3* out, UINT outstride, CONST D3DXVECTOR3* in, UINT instride, CONST D3DXMATRIX* matrix, UINT elements)
1611 for (i = 0; i < elements; ++i) {
1612 D3DXVec3TransformCoord(
1613 (D3DXVECTOR3*)((char*)out + outstride * i),
1614 (CONST D3DXVECTOR3*)((const char*)in + instride * i),
1620 D3DXVECTOR3* WINAPI D3DXVec3TransformNormal(D3DXVECTOR3 *pout, CONST D3DXVECTOR3 *pv, CONST D3DXMATRIX *pm)
1622 CONST D3DXVECTOR3 v = *pv;
1623 pout->x = pm->u.m[0][0] * v.x + pm->u.m[1][0] * v.y + pm->u.m[2][0] * v.z;
1624 pout->y = pm->u.m[0][1] * v.x + pm->u.m[1][1] * v.y + pm->u.m[2][1] * v.z;
1625 pout->z = pm->u.m[0][2] * v.x + pm->u.m[1][2] * v.y + pm->u.m[2][2] * v.z;
1630 D3DXVECTOR3* WINAPI D3DXVec3TransformNormalArray(D3DXVECTOR3* out, UINT outstride, CONST D3DXVECTOR3* in, UINT instride, CONST D3DXMATRIX* matrix, UINT elements)
1634 for (i = 0; i < elements; ++i) {
1635 D3DXVec3TransformNormal(
1636 (D3DXVECTOR3*)((char*)out + outstride * i),
1637 (CONST D3DXVECTOR3*)((const char*)in + instride * i),
1643 D3DXVECTOR3* WINAPI D3DXVec3Unproject(D3DXVECTOR3 *pout, CONST D3DXVECTOR3 *pv, CONST D3DVIEWPORT9 *pviewport, CONST D3DXMATRIX *pprojection, CONST D3DXMATRIX *pview, CONST D3DXMATRIX *pworld)
1648 D3DXMatrixMultiply(&m, pworld, pview);
1649 D3DXMatrixMultiply(&m, &m, pprojection);
1650 D3DXMatrixInverse(&m, NULL, &m);
1651 out.x = 2.0f * ( pv->x - pviewport->X ) / pviewport->Width - 1.0f;
1652 out.y = 1.0f - 2.0f * ( pv->y - pviewport->Y ) / pviewport->Height;
1653 out.z = ( pv->z - pviewport->MinZ) / ( pviewport->MaxZ - pviewport->MinZ );
1654 D3DXVec3TransformCoord(&out, &out, &m);
1659 D3DXVECTOR3* WINAPI D3DXVec3UnprojectArray(D3DXVECTOR3* out, UINT outstride, CONST D3DXVECTOR3* in, UINT instride, CONST D3DVIEWPORT9* viewport, CONST D3DXMATRIX* projection, CONST D3DXMATRIX* view, CONST D3DXMATRIX* world, UINT elements)
1663 for (i = 0; i < elements; ++i) {
1665 (D3DXVECTOR3*)((char*)out + outstride * i),
1666 (CONST D3DXVECTOR3*)((const char*)in + instride * i),
1667 viewport, projection, view, world);
1672 /*_________________D3DXVec4_____________________*/
1674 D3DXVECTOR4* WINAPI D3DXVec4BaryCentric(D3DXVECTOR4 *pout, CONST D3DXVECTOR4 *pv1, CONST D3DXVECTOR4 *pv2, CONST D3DXVECTOR4 *pv3, FLOAT f, FLOAT g)
1676 pout->x = (1.0f-f-g) * (pv1->x) + f * (pv2->x) + g * (pv3->x);
1677 pout->y = (1.0f-f-g) * (pv1->y) + f * (pv2->y) + g * (pv3->y);
1678 pout->z = (1.0f-f-g) * (pv1->z) + f * (pv2->z) + g * (pv3->z);
1679 pout->w = (1.0f-f-g) * (pv1->w) + f * (pv2->w) + g * (pv3->w);
1683 D3DXVECTOR4* WINAPI D3DXVec4CatmullRom(D3DXVECTOR4 *pout, CONST D3DXVECTOR4 *pv0, CONST D3DXVECTOR4 *pv1, CONST D3DXVECTOR4 *pv2, CONST D3DXVECTOR4 *pv3, FLOAT s)
1685 pout->x = 0.5f * (2.0f * pv1->x + (pv2->x - pv0->x) *s + (2.0f *pv0->x - 5.0f * pv1->x + 4.0f * pv2->x - pv3->x) * s * s + (pv3->x -3.0f * pv2->x + 3.0f * pv1->x - pv0->x) * s * s * s);
1686 pout->y = 0.5f * (2.0f * pv1->y + (pv2->y - pv0->y) *s + (2.0f *pv0->y - 5.0f * pv1->y + 4.0f * pv2->y - pv3->y) * s * s + (pv3->y -3.0f * pv2->y + 3.0f * pv1->y - pv0->y) * s * s * s);
1687 pout->z = 0.5f * (2.0f * pv1->z + (pv2->z - pv0->z) *s + (2.0f *pv0->z - 5.0f * pv1->z + 4.0f * pv2->z - pv3->z) * s * s + (pv3->z -3.0f * pv2->z + 3.0f * pv1->z - pv0->z) * s * s * s);
1688 pout->w = 0.5f * (2.0f * pv1->w + (pv2->w - pv0->w) *s + (2.0f *pv0->w - 5.0f * pv1->w + 4.0f * pv2->w - pv3->w) * s * s + (pv3->w -3.0f * pv2->w + 3.0f * pv1->w - pv0->w) * s * s * s);
1692 D3DXVECTOR4* WINAPI D3DXVec4Cross(D3DXVECTOR4 *pout, CONST D3DXVECTOR4 *pv1, CONST D3DXVECTOR4 *pv2, CONST D3DXVECTOR4 *pv3)
1695 out.x = pv1->y * (pv2->z * pv3->w - pv3->z * pv2->w) - pv1->z * (pv2->y * pv3->w - pv3->y * pv2->w) + pv1->w * (pv2->y * pv3->z - pv2->z *pv3->y);
1696 out.y = -(pv1->x * (pv2->z * pv3->w - pv3->z * pv2->w) - pv1->z * (pv2->x * pv3->w - pv3->x * pv2->w) + pv1->w * (pv2->x * pv3->z - pv3->x * pv2->z));
1697 out.z = pv1->x * (pv2->y * pv3->w - pv3->y * pv2->w) - pv1->y * (pv2->x *pv3->w - pv3->x * pv2->w) + pv1->w * (pv2->x * pv3->y - pv3->x * pv2->y);
1698 out.w = -(pv1->x * (pv2->y * pv3->z - pv3->y * pv2->z) - pv1->y * (pv2->x * pv3->z - pv3->x *pv2->z) + pv1->z * (pv2->x * pv3->y - pv3->x * pv2->y));
1703 D3DXVECTOR4* WINAPI D3DXVec4Hermite(D3DXVECTOR4 *pout, CONST D3DXVECTOR4 *pv1, CONST D3DXVECTOR4 *pt1, CONST D3DXVECTOR4 *pv2, CONST D3DXVECTOR4 *pt2, FLOAT s)
1705 FLOAT h1, h2, h3, h4;
1707 h1 = 2.0f * s * s * s - 3.0f * s * s + 1.0f;
1708 h2 = s * s * s - 2.0f * s * s + s;
1709 h3 = -2.0f * s * s * s + 3.0f * s * s;
1710 h4 = s * s * s - s * s;
1712 pout->x = h1 * (pv1->x) + h2 * (pt1->x) + h3 * (pv2->x) + h4 * (pt2->x);
1713 pout->y = h1 * (pv1->y) + h2 * (pt1->y) + h3 * (pv2->y) + h4 * (pt2->y);
1714 pout->z = h1 * (pv1->z) + h2 * (pt1->z) + h3 * (pv2->z) + h4 * (pt2->z);
1715 pout->w = h1 * (pv1->w) + h2 * (pt1->w) + h3 * (pv2->w) + h4 * (pt2->w);
1719 D3DXVECTOR4* WINAPI D3DXVec4Normalize(D3DXVECTOR4 *pout, CONST D3DXVECTOR4 *pv)
1724 norm = D3DXVec4Length(pv);
1726 out.x = pv->x / norm;
1727 out.y = pv->y / norm;
1728 out.z = pv->z / norm;
1729 out.w = pv->w / norm;
1735 D3DXVECTOR4* WINAPI D3DXVec4Transform(D3DXVECTOR4 *pout, CONST D3DXVECTOR4 *pv, CONST D3DXMATRIX *pm)
1738 out.x = pm->u.m[0][0] * pv->x + pm->u.m[1][0] * pv->y + pm->u.m[2][0] * pv->z + pm->u.m[3][0] * pv->w;
1739 out.y = pm->u.m[0][1] * pv->x + pm->u.m[1][1] * pv->y + pm->u.m[2][1] * pv->z + pm->u.m[3][1] * pv->w;
1740 out.z = pm->u.m[0][2] * pv->x + pm->u.m[1][2] * pv->y + pm->u.m[2][2] * pv->z + pm->u.m[3][2] * pv->w;
1741 out.w = pm->u.m[0][3] * pv->x + pm->u.m[1][3] * pv->y + pm->u.m[2][3] * pv->z + pm->u.m[3][3] * pv->w;
1746 D3DXVECTOR4* WINAPI D3DXVec4TransformArray(D3DXVECTOR4* out, UINT outstride, CONST D3DXVECTOR4* in, UINT instride, CONST D3DXMATRIX* matrix, UINT elements)
1750 for (i = 0; i < elements; ++i) {
1752 (D3DXVECTOR4*)((char*)out + outstride * i),
1753 (CONST D3DXVECTOR4*)((const char*)in + instride * i),