dlls/d3drm/tests/vector.c

   1 /*
   2  * Copyright 2007 Vijay Kiran Kamuju
   3  * Copyright 2007 David Adam
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include <assert.h>
  21 #include "wine/test.h"
  22 #include "d3drmdef.h"
  23 #include <math.h>
  24
  25 #define PI (4*atan(1.0))
  26 #define admit_error 0.000001
  27
  28 #define expect_vec(expectedvec,gotvec) \
  29   ok( ((fabs(expectedvec.x-gotvec.x)<admit_error)&&(fabs(expectedvec.y-gotvec.y)<admit_error)&&(fabs(expectedvec.z-gotvec.z)<admit_error)), \
  30   "Expected Vector= (%f, %f, %f)\n , Got Vector= (%f, %f, %f)\n", \
  31   expectedvec.x,expectedvec.y,expectedvec.z, gotvec.x, gotvec.y, gotvec.z);
  32
  33 void VectorTest(void)
  34 {
  35     D3DVALUE mod,par;
  36     D3DVECTOR e,r,u,v,casnul,norm,ray;
  37
  38     u.x=2.0;u.y=2.0;u.z=1.0;
  39     v.x=4.0;v.y=4.0;v.z=0.0;
  40
  41 /*______________________VectorAdd_________________________________*/
  42     D3DRMVectorAdd(&r,&u,&v);
  43     e.x=6.0;e.y=6.0;e.z=1.0;
  44     expect_vec(e,r);
  45
  46 /*_______________________VectorSubtract__________________________*/
  47     D3DRMVectorSubtract(&r,&u,&v);
  48     e.x=-2.0;e.y=-2.0;e.z=1.0;
  49     expect_vec(e,r);
  50
  51 /*_______________________VectorCrossProduct_______________________*/
  52     D3DRMVectorCrossProduct(&r,&u,&v);
  53     e.x=-4.0;e.y=4.0;e.z=0.0;
  54     expect_vec(e,r);
  55
  56 /*_______________________VectorDotProduct__________________________*/
  57     mod=D3DRMVectorDotProduct(&u,&v);
  58     ok((mod == 16.0), "Expected 16.0, Got %f",mod);
  59
  60 /*_______________________VectorModulus_____________________________*/
  61     mod=D3DRMVectorModulus(&u);
  62     ok((mod == 3.0), "Expected 3.0, Got %f",mod);
  63
  64 /*_______________________VectorNormalize___________________________*/
  65     D3DRMVectorNormalize(&u);
  66     e.x=2.0/3.0;e.y=2.0/3.0;e.z=1.0/3.0;
  67     expect_vec(e,u);
  68
  69 /* If u is the NULL vector, MSDN says that the return vector is NULL. In fact, the returned vector is (1,0,0). The following test case prove it. */
  70
  71     casnul.x=0.0; casnul.y=0.0; casnul.z=0.0;
  72     D3DRMVectorNormalize(&casnul);
  73     e.x=1.0; e.y=0.0; e.z=0.0;
  74     expect_vec(e,casnul);
  75
  76 /*____________________VectorReflect_________________________________*/
  77     ray.x=3.0; ray.y=-4.0; ray.z=5.0;
  78     norm.x=1.0; norm.y=-2.0; norm.z=6.0;
  79     e.x=79.0; e.y=-160.0; e.z=487.0;
  80     D3DRMVectorReflect(&r,&ray,&norm);
  81     expect_vec(e,r);
  82
  83 /*_______________________VectorScale__________________________*/
  84     par=2.5;
  85     D3DRMVectorScale(&r,&v,par);
  86     e.x=10.0; e.y=10.0; e.z=0.0;
  87     expect_vec(e,r);
  88 }
  89
  90 START_TEST(vector)
  91 {
  92     VectorTest();
  93 }