dlls/d3dx8/tests/mesh.c

   1 /*
   2  * Copyright 2008 David Adam
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "d3dx8.h"
  20
  21 #include "wine/test.h"
  22
  23 #define admitted_error 0.0001f
  24
  25 static BOOL compare(FLOAT u, FLOAT v)
  26 {
  27     return (fabs(u-v) < admitted_error);
  28 }
  29
  30 static void D3DXBoundProbeTest(void)
  31 {
  32     BOOL result;
  33     D3DXVECTOR3 bottom_point, center, top_point, raydirection, rayposition;
  34     FLOAT radius;
  35
  36 /*____________Test the Box case___________________________*/
  37     bottom_point.x = -3.0f; bottom_point.y = -2.0f; bottom_point.z = -1.0f;
  38     top_point.x = 7.0f; top_point.y = 8.0f; top_point.z = 9.0f;
  39
  40     raydirection.x = -4.0f; raydirection.y = -5.0f; raydirection.z = -6.0f;
  41     rayposition.x = 5.0f; rayposition.y = 5.0f; rayposition.z = 11.0f;
  42     result = D3DXBoxBoundProbe(&bottom_point, &top_point, &rayposition, &raydirection);
  43     ok(result == TRUE, "expected TRUE, received FALSE\n");
  44
  45     raydirection.x = 4.0f; raydirection.y = 5.0f; raydirection.z = 6.0f;
  46     rayposition.x = 5.0f; rayposition.y = 5.0f; rayposition.z = 11.0f;
  47     result = D3DXBoxBoundProbe(&bottom_point, &top_point, &rayposition, &raydirection);
  48     ok(result == FALSE, "expected FALSE, received TRUE\n");
  49
  50     rayposition.x = -4.0f; rayposition.y = 1.0f; rayposition.z = -2.0f;
  51     result = D3DXBoxBoundProbe(&bottom_point, &top_point, &rayposition, &raydirection);
  52     ok(result == TRUE, "expected TRUE, received FALSE\n");
  53
  54     bottom_point.x = 1.0f; bottom_point.y = 0.0f; bottom_point.z = 0.0f;
  55     top_point.x = 1.0f; top_point.y = 0.0f; top_point.z = 0.0f;
  56     rayposition.x = 0.0f; rayposition.y = 1.0f; rayposition.z = 0.0f;
  57     raydirection.x = 0.0f; raydirection.y = 3.0f; raydirection.z = 0.0f;
  58     result = D3DXBoxBoundProbe(&bottom_point, &top_point, &rayposition, &raydirection);
  59     ok(result == FALSE, "expected FALSE, received TRUE\n");
  60
  61     bottom_point.x = 1.0f; bottom_point.y = 2.0f; bottom_point.z = 3.0f;
  62     top_point.x = 10.0f; top_point.y = 15.0f; top_point.z = 20.0f;
  63
  64     raydirection.x = 7.0f; raydirection.y = 8.0f; raydirection.z = 9.0f;
  65     rayposition.x = 3.0f; rayposition.y = 7.0f; rayposition.z = -6.0f;
  66     result = D3DXBoxBoundProbe(&bottom_point, &top_point, &rayposition, &raydirection);
  67     ok(result == TRUE, "expected TRUE, received FALSE\n");
  68
  69     bottom_point.x = 0.0f; bottom_point.y = 0.0f; bottom_point.z = 0.0f;
  70     top_point.x = 1.0f; top_point.y = 1.0f; top_point.z = 1.0f;
  71
  72     raydirection.x = 0.0f; raydirection.y = 1.0f; raydirection.z = .0f;
  73     rayposition.x = -3.0f; rayposition.y = 0.0f; rayposition.z = 0.0f;
  74     result = D3DXBoxBoundProbe(&bottom_point, &top_point, &rayposition, &raydirection);
  75     ok(result == FALSE, "expected FALSE, received TRUE\n");
  76
  77     raydirection.x = 1.0f; raydirection.y = 0.0f; raydirection.z = .0f;
  78     rayposition.x = -3.0f; rayposition.y = 0.0f; rayposition.z = 0.0f;
  79     result = D3DXBoxBoundProbe(&bottom_point, &top_point, &rayposition, &raydirection);
  80     ok(result == TRUE, "expected TRUE, received FALSE\n");
  81
  82 /*____________Test the Sphere case________________________*/
  83     radius = sqrt(77.0f);
  84     center.x = 1.0f; center.y = 2.0f; center.z = 3.0f;
  85     raydirection.x = 2.0f; raydirection.y = -4.0f; raydirection.z = 2.0f;
  86
  87     rayposition.x = 5.0f; rayposition.y = 5.0f; rayposition.z = 9.0f;
  88     result = D3DXSphereBoundProbe(&center, radius, &rayposition, &raydirection);
  89     ok(result == TRUE, "expected TRUE, received FALSE\n");
  90
  91     rayposition.x = 45.0f; rayposition.y = -75.0f; rayposition.z = 49.0f;
  92     result = D3DXSphereBoundProbe(&center, radius, &rayposition, &raydirection);
  93     ok(result == FALSE, "expected FALSE, received TRUE\n");
  94
  95     rayposition.x = 5.0f; rayposition.y = 7.0f; rayposition.z = 9.0f;
  96     result = D3DXSphereBoundProbe(&center, radius, &rayposition, &raydirection);
  97     ok(result == FALSE, "expected FALSE, received TRUE\n");
  98
  99     rayposition.x = 5.0f; rayposition.y = 11.0f; rayposition.z = 9.0f;
 100     result = D3DXSphereBoundProbe(&center, radius, &rayposition, &raydirection);
 101     ok(result == FALSE, "expected FALSE, received TRUE\n");
 102 }
 103
 104 static void D3DXIntersectTriTest(void)
 105 {
 106     BOOL exp_res, got_res;
 107     D3DXVECTOR3 position, ray, vertex[3];
 108     FLOAT exp_dist, got_dist, exp_u, got_u, exp_v, got_v;
 109
 110     vertex[0].x = 1.0f; vertex[0].y = 0.0f; vertex[0].z = 0.0f;
 111     vertex[1].x = 2.0f; vertex[1].y = 0.0f; vertex[1].z = 0.0f;
 112     vertex[2].x = 1.0f; vertex[2].y = 1.0f; vertex[2].z = 0.0f;
 113
 114     position.x = -14.5f; position.y = -23.75f; position.z = -32.0f;
 115
 116     ray.x = 2.0f; ray.y = 3.0f; ray.z = 4.0f;
 117
 118     exp_res = TRUE; exp_u = 0.5f; exp_v = 0.25f; exp_dist = 8.0f;
 119
 120     got_res = D3DXIntersectTri(&vertex[0],&vertex[1],&vertex[2],&position,&ray,&got_u,&got_v,&got_dist);
 121     ok( got_res == exp_res, "Expected result = %d, got %d\n",exp_res,got_res);
 122     ok( compare(exp_u,got_u), "Expected u = %f, got %f\n",exp_u,got_u);
 123     ok( compare(exp_v,got_v), "Expected v = %f, got %f\n",exp_v,got_v);
 124     ok( compare(exp_dist,got_dist), "Expected distance = %f, got %f\n",exp_dist,got_dist);
 125
 126 /*Only positive ray is taken in account*/
 127
 128     vertex[0].x = 1.0f; vertex[0].y = 0.0f; vertex[0].z = 0.0f;
 129     vertex[1].x = 2.0f; vertex[1].y = 0.0f; vertex[1].z = 0.0f;
 130     vertex[2].x = 1.0f; vertex[2].y = 1.0f; vertex[2].z = 0.0f;
 131
 132     position.x = 17.5f; position.y = 24.25f; position.z = 32.0f;
 133
 134     ray.x = 2.0f; ray.y = 3.0f; ray.z = 4.0f;
 135
 136     exp_res = FALSE;
 137
 138     got_res = D3DXIntersectTri(&vertex[0],&vertex[1],&vertex[2],&position,&ray,&got_u,&got_v,&got_dist);
 139     ok( got_res == exp_res, "Expected result = %d, got %d\n",exp_res,got_res);
 140
 141 /*Intersection between ray and triangle in a same plane is considered as empty*/
 142
 143     vertex[0].x = 4.0f; vertex[0].y = 0.0f; vertex[0].z = 0.0f;
 144     vertex[1].x = 6.0f; vertex[1].y = 0.0f; vertex[1].z = 0.0f;
 145     vertex[2].x = 4.0f; vertex[2].y = 2.0f; vertex[2].z = 0.0f;
 146
 147     position.x = 1.0f; position.y = 1.0f; position.z = 0.0f;
 148
 149     ray.x = 1.0f; ray.y = 0.0f; ray.z = 0.0f;
 150
 151     exp_res = FALSE;
 152
 153     got_res = D3DXIntersectTri(&vertex[0],&vertex[1],&vertex[2],&position,&ray,&got_u,&got_v,&got_dist);
 154     ok( got_res == exp_res, "Expected result = %d, got %d\n",exp_res,got_res);
 155 }
 156
 157 START_TEST(mesh)
 158 {
 159     D3DXBoundProbeTest();
 160     D3DXIntersectTriTest();
 161 }