/* adds a ground plane to the scene */
unsigned int addGroundPlane (RTCScene scene_i)
{
/* create a triangulated plane with 2 triangles and 4 vertices */
unsigned int mesh = rtcNewTriangleMesh (scene_i, RTC_GEOMETRY_STATIC, 2, 4);
/* set vertices */
Vertex* vertices = (Vertex*) rtcMapBuffer(scene_i,mesh,RTC_VERTEX_BUFFER);
vertices[0].x = -10; vertices[0].y = -2; vertices[0].z = -10;
vertices[1].x = -10; vertices[1].y = -2; vertices[1].z = +10;
vertices[2].x = +10; vertices[2].y = -2; vertices[2].z = -10;
vertices[3].x = +10; vertices[3].y = -2; vertices[3].z = +10;
rtcUnmapBuffer(scene_i,mesh,RTC_VERTEX_BUFFER);
/* set triangles */
Triangle* triangles = (Triangle*) rtcMapBuffer(scene_i,mesh,RTC_INDEX_BUFFER);
triangles[0].v0 = 0; triangles[0].v1 = 2; triangles[0].v2 = 1;
triangles[1].v0 = 1; triangles[1].v1 = 2; triangles[1].v2 = 3;
rtcUnmapBuffer(scene_i,mesh,RTC_INDEX_BUFFER);
return mesh;
}
RTCScene convertScene(ISPCScene* scene_in)
{
//scene_in->numHairSets = 0;
//scene_in->numMeshes = 0;
/* create scene */
RTCScene scene_out = rtcNewScene(RTC_SCENE_STATIC | RTC_SCENE_INCOHERENT, RTC_INTERSECT1);
/* add all hair sets to the scene */
for (int i=0; i<scene_in->numHairSets; i++)
{
ISPCHairSet* hair = scene_in->hairs[i];
unsigned int geomID = rtcNewHairGeometry (scene_out, RTC_GEOMETRY_STATIC, hair->numHairs, hair->numVertices, hair->v2 ? 2 : 1);
rtcSetBuffer(scene_out,geomID,RTC_VERTEX_BUFFER,hair->v,0,sizeof(Vertex));
if (hair->v2) rtcSetBuffer(scene_out,geomID,RTC_VERTEX_BUFFER1,hair->v2,0,sizeof(Vertex));
rtcSetBuffer(scene_out,geomID,RTC_INDEX_BUFFER,hair->hairs,0,sizeof(ISPCHair));
rtcSetOcclusionFilterFunction(scene_out,geomID,(RTCFilterFunc)&filterDispatch);
}
/* add all triangle meshes to the scene */
for (int i=0; i<scene_in->numMeshes; i++)
{
ISPCMesh* mesh = scene_in->meshes[i];
unsigned int geomID = rtcNewTriangleMesh (scene_out, RTC_GEOMETRY_STATIC, mesh->numTriangles, mesh->numVertices, mesh->positions2 ? 2 : 1);
rtcSetBuffer(scene_out,geomID,RTC_VERTEX_BUFFER,mesh->positions,0,sizeof(Vertex));
if (mesh->positions2) rtcSetBuffer(scene_out,geomID,RTC_VERTEX_BUFFER1,mesh->positions2,0,sizeof(Vertex));
rtcSetBuffer(scene_out,geomID,RTC_INDEX_BUFFER,mesh->triangles,0,sizeof(ISPCTriangle));
rtcSetOcclusionFilterFunction(scene_out,geomID,(RTCFilterFunc)&filterDispatch);
}
/* commit changes to scene */
#if !defined(PARALLEL_COMMIT)
rtcCommit (scene_out);
#else
launch[ getNumHWThreads() ] parallelCommit(scene_out);
#endif
return scene_out;
}
extern "C" unsigned ispcNewTriangleMesh (RTCScene scene, RTCGeometryFlags flags, size_t numTriangles, size_t numVertices, size_t numTimeSteps) {
return rtcNewTriangleMesh((RTCScene)scene,flags,numTriangles,numVertices,numTimeSteps);
}
/* 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 = (Vec3fa*) alignedMalloc(12*sizeof(Vec3fa));
/* set triangles and colors */
int tri = 0;
Triangle* triangles = (Triangle*) rtcMapBuffer(scene_i,mesh,RTC_INDEX_BUFFER);
// left side
colors[tri] = Vec3fa(1,0,0);
triangles[tri].v0 = 0;
triangles[tri].v1 = 2;
triangles[tri].v2 = 1;
tri++;
colors[tri] = Vec3fa(1,0,0);
triangles[tri].v0 = 1;
triangles[tri].v1 = 2;
triangles[tri].v2 = 3;
tri++;
// right side
colors[tri] = Vec3fa(0,1,0);
triangles[tri].v0 = 4;
triangles[tri].v1 = 5;
triangles[tri].v2 = 6;
tri++;
colors[tri] = Vec3fa(0,1,0);
triangles[tri].v0 = 5;
triangles[tri].v1 = 7;
triangles[tri].v2 = 6;
tri++;
// bottom side
colors[tri] = Vec3fa(0.5f);
triangles[tri].v0 = 0;
triangles[tri].v1 = 1;
triangles[tri].v2 = 4;
tri++;
colors[tri] = Vec3fa(0.5f);
triangles[tri].v0 = 1;
triangles[tri].v1 = 5;
triangles[tri].v2 = 4;
tri++;
// top side
colors[tri] = Vec3fa(1.0f);
triangles[tri].v0 = 2;
triangles[tri].v1 = 6;
triangles[tri].v2 = 3;
tri++;
colors[tri] = Vec3fa(1.0f);
triangles[tri].v0 = 3;
triangles[tri].v1 = 6;
triangles[tri].v2 = 7;
tri++;
// front side
colors[tri] = Vec3fa(0,0,1);
triangles[tri].v0 = 0;
triangles[tri].v1 = 4;
triangles[tri].v2 = 2;
tri++;
colors[tri] = Vec3fa(0,0,1);
triangles[tri].v0 = 2;
triangles[tri].v1 = 4;
triangles[tri].v2 = 6;
tri++;
// back side
colors[tri] = Vec3fa(1,1,0);
triangles[tri].v0 = 1;
triangles[tri].v1 = 3;
triangles[tri].v2 = 5;
tri++;
colors[tri] = Vec3fa(1,1,0);
triangles[tri].v0 = 3;
triangles[tri].v1 = 7;
triangles[tri].v2 = 5;
tri++;
rtcUnmapBuffer(scene_i,mesh,RTC_INDEX_BUFFER);
return mesh;
}
RTCScene convertScene(ISPCScene* scene_in)
{
//scene_in->numHairSets = 0;
//scene_in->numMeshes = 0;
/* create scene */
RTCScene scene_out = rtcNewScene(RTC_SCENE_STATIC | RTC_SCENE_INCOHERENT, RTC_INTERSECT1);
/* add all hair sets to the scene */
for (int i=0; i<scene_in->numHairSets; i++)
{
ISPCHairSet* hair = scene_in->hairs[i];
unsigned int geomID = rtcNewHairGeometry (scene_out, RTC_GEOMETRY_STATIC, hair->numHairs, hair->numVertices, hair->v2 ? 2 : 1);
rtcSetBuffer(scene_out,geomID,RTC_VERTEX_BUFFER,hair->v,0,sizeof(Vertex));
if (hair->v2) rtcSetBuffer(scene_out,geomID,RTC_VERTEX_BUFFER1,hair->v2,0,sizeof(Vertex));
rtcSetBuffer(scene_out,geomID,RTC_INDEX_BUFFER,hair->hairs,0,sizeof(ISPCHair));
rtcSetOcclusionFilterFunction(scene_out,geomID,(RTCFilterFunc)&filterDispatch);
}
/* add all triangle meshes to the scene */
for (int i=0; i<scene_in->numMeshes; i++)
{
ISPCMesh* mesh = scene_in->meshes[i];
if (mesh->numQuads)
{
g_subdiv_mode = true;
size_t numPrimitives = mesh->numQuads;
size_t numEdges = mesh->numQuads*4;
mesh->edge_level = new float[numEdges];
int *index_buffer = new int[numEdges];
for (size_t i=0; i<numEdges; i++)
mesh->edge_level[i] = FIXED_EDGE_TESSELLATION_VALUE;
/* create a triangle mesh */
unsigned int geomID = rtcNewSubdivisionMesh (scene_out, RTC_GEOMETRY_STATIC, numPrimitives, numEdges, mesh->numVertices, 0, 0, 0);
mesh->geomID = geomID;
unsigned int* faces = (unsigned int*) rtcMapBuffer(scene_out, geomID, RTC_FACE_BUFFER);
for (size_t i=0; i<mesh->numQuads ; i++) faces[i] = 4;
rtcUnmapBuffer(scene_out,geomID,RTC_FACE_BUFFER);
for (size_t i=0; i<mesh->numQuads; i++)
{
index_buffer[4*i+0] = mesh->quads[i].v0;
index_buffer[4*i+1] = mesh->quads[i].v1;
index_buffer[4*i+2] = mesh->quads[i].v2;
index_buffer[4*i+3] = mesh->quads[i].v3;
}
rtcSetBuffer(scene_out, geomID, RTC_VERTEX_BUFFER, mesh->positions , 0, sizeof(Vec3fa ));
rtcSetBuffer(scene_out, geomID, RTC_INDEX_BUFFER, index_buffer , 0, sizeof(unsigned int));
rtcSetBuffer(scene_out, geomID, RTC_LEVEL_BUFFER, mesh->edge_level, 0, sizeof(float));
#if ENABLE_DISPLACEMENTS == 1
rtcSetDisplacementFunction(scene_out,geomID,(RTCDisplacementFunc)&displacementFunction,NULL);
#endif
}
else if (mesh->numTriangles)
{
unsigned int geomID = rtcNewTriangleMesh (scene_out, RTC_GEOMETRY_STATIC, mesh->numTriangles, mesh->numVertices, mesh->positions2 ? 2 : 1);
rtcSetBuffer(scene_out,geomID,RTC_VERTEX_BUFFER,mesh->positions,0,sizeof(Vertex));
if (mesh->positions2) rtcSetBuffer(scene_out,geomID,RTC_VERTEX_BUFFER1,mesh->positions2,0,sizeof(Vertex));
rtcSetBuffer(scene_out,geomID,RTC_INDEX_BUFFER,mesh->triangles,0,sizeof(ISPCTriangle));
rtcSetOcclusionFilterFunction(scene_out,geomID,(RTCFilterFunc)&filterDispatch);
}
}
/* commit changes to scene */
rtcCommit (scene_out);
return scene_out;
}
