/* adds a cube to the scene */
unsigned int addSubdivCube (RTCScene scene_i)
{
unsigned int geomID = rtcNewSubdivisionMesh(scene_i, RTC_GEOMETRY_STATIC, NUM_QUAD_FACES, NUM_QUAD_INDICES, NUM_VERTICES, 0, 0, 0);
rtcSetBuffer(scene_i, geomID, RTC_VERTEX_BUFFER, cube_vertices, 0, sizeof(Vec3fa ));
rtcSetBuffer(scene_i, geomID, RTC_INDEX_BUFFER, cube_quad_indices , 0, sizeof(unsigned int));
rtcSetBuffer(scene_i, geomID, RTC_FACE_BUFFER, cube_quad_faces, 0, sizeof(unsigned int));
float* level = (float*) rtcMapBuffer(scene_i, geomID, RTC_LEVEL_BUFFER);
for (size_t i=0; i<NUM_QUAD_INDICES; i++) level[i] = 4;
rtcUnmapBuffer(scene_i, geomID, RTC_LEVEL_BUFFER);
/* create face color array */
colors = (Vec3fa*) alignedMalloc(6*sizeof(Vec3fa));
colors[0] = Vec3fa(1,0,0); // left side
colors[1] = Vec3fa(0,1,0); // right side
colors[2] = Vec3fa(0.5f); // bottom side
colors[3] = Vec3fa(1.0f); // top side
colors[4] = Vec3fa(0,0,1); // front side
colors[5] = Vec3fa(1,1,0); // back side
/* set intersection filter for the cube */
if (g_mode != MODE_NORMAL) {
rtcSetIntersectionFilterFunctionN(scene_i,geomID,intersectionFilterN);
rtcSetOcclusionFilterFunctionN (scene_i,geomID,occlusionFilterN);
}
else {
rtcSetIntersectionFilterFunction(scene_i,geomID,intersectionFilter);
rtcSetOcclusionFilterFunction (scene_i,geomID,occlusionFilter);
}
return geomID;
}
/* adds a cube to the scene */
unsigned int addCube (RTCScene scene_i)
{
/* create a triangulated cube with 12 triangles and 8 vertices */
unsigned int mesh = rtcNewTriangleMesh (scene_i, RTC_GEOMETRY_STATIC, 12, 8);
/* set vertices */
Vertex* vertices = (Vertex*) rtcMapBuffer(scene_i,mesh,RTC_VERTEX_BUFFER);
vertices[0].x = -1; vertices[0].y = -1; vertices[0].z = -1;
vertices[1].x = -1; vertices[1].y = -1; vertices[1].z = +1;
vertices[2].x = -1; vertices[2].y = +1; vertices[2].z = -1;
vertices[3].x = -1; vertices[3].y = +1; vertices[3].z = +1;
vertices[4].x = +1; vertices[4].y = -1; vertices[4].z = -1;
vertices[5].x = +1; vertices[5].y = -1; vertices[5].z = +1;
vertices[6].x = +1; vertices[6].y = +1; vertices[6].z = -1;
vertices[7].x = +1; vertices[7].y = +1; vertices[7].z = +1;
rtcUnmapBuffer(scene_i,mesh,RTC_VERTEX_BUFFER);
/* create triangle color array */
colors = new Vec3f[12];
/* set triangles and colors */
int tri = 0;
Triangle* triangles = (Triangle*) rtcMapBuffer(scene_i,mesh,RTC_INDEX_BUFFER);
// left side
colors[tri] = Vec3f(1,0,0); triangles[tri].v0 = 0; triangles[tri].v1 = 2; triangles[tri].v2 = 1; tri++;
colors[tri] = Vec3f(1,0,0); triangles[tri].v0 = 1; triangles[tri].v1 = 2; triangles[tri].v2 = 3; tri++;
// right side
colors[tri] = Vec3f(0,1,0); triangles[tri].v0 = 4; triangles[tri].v1 = 5; triangles[tri].v2 = 6; tri++;
colors[tri] = Vec3f(0,1,0); triangles[tri].v0 = 5; triangles[tri].v1 = 7; triangles[tri].v2 = 6; tri++;
// bottom side
colors[tri] = Vec3f(0.5f); triangles[tri].v0 = 0; triangles[tri].v1 = 1; triangles[tri].v2 = 4; tri++;
colors[tri] = Vec3f(0.5f); triangles[tri].v0 = 1; triangles[tri].v1 = 5; triangles[tri].v2 = 4; tri++;
// top side
colors[tri] = Vec3f(1.0f); triangles[tri].v0 = 2; triangles[tri].v1 = 6; triangles[tri].v2 = 3; tri++;
colors[tri] = Vec3f(1.0f); triangles[tri].v0 = 3; triangles[tri].v1 = 6; triangles[tri].v2 = 7; tri++;
// front side
colors[tri] = Vec3f(0,0,1); triangles[tri].v0 = 0; triangles[tri].v1 = 4; triangles[tri].v2 = 2; tri++;
colors[tri] = Vec3f(0,0,1); triangles[tri].v0 = 2; triangles[tri].v1 = 4; triangles[tri].v2 = 6; tri++;
// back side
colors[tri] = Vec3f(1,1,0); triangles[tri].v0 = 1; triangles[tri].v1 = 3; triangles[tri].v2 = 5; tri++;
colors[tri] = Vec3f(1,1,0); triangles[tri].v0 = 3; triangles[tri].v1 = 7; triangles[tri].v2 = 5; tri++;
rtcUnmapBuffer(scene_i,mesh,RTC_INDEX_BUFFER);
/* set intersection filter for the cube */
rtcSetIntersectionFilterFunction(scene_i,mesh,(RTCFilterFunc)&intersectionFilter);
rtcSetOcclusionFilterFunction (scene_i,mesh,(RTCFilterFunc)&occlusionFilter);
return mesh;
}
/* adds a cube to the scene */
unsigned int addCube (RTCScene scene_i, const Vec3fa& offset, const Vec3fa& scale, float rotation)
{
/* create a triangulated cube with 12 triangles and 8 vertices */
unsigned int geomID = rtcNewTriangleMesh (scene_i, RTC_GEOMETRY_STATIC, NUM_TRI_FACES, NUM_VERTICES);
//rtcSetBuffer(scene_i, geomID, RTC_VERTEX_BUFFER, cube_vertices, 0, sizeof(Vec3fa ));
Vec3fa* ptr = (Vec3fa*) rtcMapBuffer(scene_i, geomID, RTC_VERTEX_BUFFER);
for (size_t i=0; i<NUM_VERTICES; i++) {
float x = cube_vertices[i][0];
float y = cube_vertices[i][1];
float z = cube_vertices[i][2];
Vec3fa vtx = Vec3fa(x,y,z);
ptr[i] = Vec3fa(offset+LinearSpace3fa::rotate(Vec3fa(0,1,0),rotation)*LinearSpace3fa::scale(scale)*vtx);
}
rtcUnmapBuffer(scene_i,geomID,RTC_VERTEX_BUFFER);
rtcSetBuffer(scene_i, geomID, RTC_INDEX_BUFFER, cube_tri_indices , 0, 3*sizeof(unsigned int));
/* create per-triangle color array */
colors = (Vec3fa*) alignedMalloc(12*sizeof(Vec3fa));
colors[0] = Vec3fa(1,0,0); // left side
colors[1] = Vec3fa(1,0,0);
colors[2] = Vec3fa(0,1,0); // right side
colors[3] = Vec3fa(0,1,0);
colors[4] = Vec3fa(0.5f); // bottom side
colors[5] = Vec3fa(0.5f);
colors[6] = Vec3fa(1.0f); // top side
colors[7] = Vec3fa(1.0f);
colors[8] = Vec3fa(0,0,1); // front side
colors[9] = Vec3fa(0,0,1);
colors[10] = Vec3fa(1,1,0); // back side
colors[11] = Vec3fa(1,1,0);
/* set intersection filter for the cube */
if (g_mode != MODE_NORMAL) {
rtcSetIntersectionFilterFunctionN(scene_i,geomID,intersectionFilterN);
rtcSetOcclusionFilterFunctionN (scene_i,geomID,occlusionFilterN);
}
else {
rtcSetIntersectionFilterFunction(scene_i,geomID,intersectionFilter);
rtcSetOcclusionFilterFunction (scene_i,geomID,occlusionFilter);
}
return geomID;
}
