diff options
Diffstat (limited to 'intern/bsp/intern/BSP_CSGMeshBuilder.cpp')
| -rwxr-xr-x | intern/bsp/intern/BSP_CSGMeshBuilder.cpp | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/intern/bsp/intern/BSP_CSGMeshBuilder.cpp b/intern/bsp/intern/BSP_CSGMeshBuilder.cpp new file mode 100755 index 00000000000..cbe4bfc920d --- /dev/null +++ b/intern/bsp/intern/BSP_CSGMeshBuilder.cpp @@ -0,0 +1,152 @@ +/** + * $Id$ + * ***** BEGIN GPL/BL DUAL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. The Blender + * Foundation also sells licenses for use in proprietary software under + * the Blender License. See http://www.blender.org/BL/ for information + * about this. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): none yet. + * + * ***** END GPL/BL DUAL LICENSE BLOCK ***** + */ + +#include "BSP_CSGMeshBuilder.h" + + +using namespace std; + + MEM_SmartPtr<BSP_CSGMesh> +BSP_CSGMeshBuilder:: +NewMesh( + CSG_MeshPropertyDescriptor &props, + CSG_FaceIteratorDescriptor &face_it, + CSG_VertexIteratorDescriptor &vertex_it +) { + + MEM_SmartPtr<BSP_CSGMesh> mesh = BSP_CSGMesh::New(); + if (mesh == NULL) return NULL; + + MEM_SmartPtr<BSP_CSGUserData> fv_data = new BSP_CSGUserData(props.user_face_vertex_data_size); + MEM_SmartPtr<BSP_CSGUserData> face_data = new BSP_CSGUserData(props.user_data_size); + + + MEM_SmartPtr<vector<BSP_MVertex> > vertices(new vector<BSP_MVertex>); + if (vertices == NULL || fv_data == NULL || face_data == NULL) return NULL; + + // The size of the vertex data array will be at least the number of faces. + + fv_data->Reserve(face_it.num_elements); + face_data->Reserve(face_it.num_elements); + + vertices->reserve(vertex_it.num_elements); + + CSG_IVertex vertex; + + while (!vertex_it.Done(vertex_it.it)) { + vertex_it.Fill(vertex_it.it,&vertex); + + MT_Point3 pos(vertex.position); + vertices->push_back(BSP_MVertex(pos)); + + vertex_it.Step(vertex_it.it); + } + + // pass ownership of the vertices to the mesh. + mesh->SetVertices(vertices); + + // now for the polygons. + + CSG_IFace face; + // we may need to decalare some memory for user defined face properties. + + if (props.user_data_size) { + face.user_face_data = new char[props.user_data_size]; + } else { + face.user_face_data = NULL; + } + + if (props.user_face_vertex_data_size) { + char * fv_data = NULL; + fv_data = new char[4 * props.user_face_vertex_data_size]; + + face.user_face_vertex_data[0] = fv_data; + face.user_face_vertex_data[1] = fv_data + props.user_face_vertex_data_size; + face.user_face_vertex_data[2] = fv_data + 2*props.user_face_vertex_data_size; + face.user_face_vertex_data[3] = fv_data + 3*props.user_face_vertex_data_size; + } else { + face.user_face_vertex_data[0] = NULL; + face.user_face_vertex_data[1] = NULL; + face.user_face_vertex_data[2] = NULL; + face.user_face_vertex_data[3] = NULL; + } + + + int tri_index[3]; + int fv_index[3]; + + while (!face_it.Done(face_it.it)) { + face_it.Fill(face_it.it,&face); + + // Let's not rely on quads being coplanar - especially if they + // are coming out of that soup of code from blender... + if (face.vertex_number == 4) { + tri_index[0] = face.vertex_index[2]; + tri_index[1] = face.vertex_index[3]; + tri_index[2] = face.vertex_index[0]; + + fv_index[0] = fv_data->Duplicate(face.user_face_vertex_data[2]); + fv_index[1] = fv_data->Duplicate(face.user_face_vertex_data[3]); + fv_index[2] = fv_data->Duplicate(face.user_face_vertex_data[0]); + + mesh->AddPolygon(tri_index,fv_index,3); + + // bit of an unspoken relationship between mesh face buffer + // and the face data which I guess should be changed. + face_data->Duplicate(face.user_face_data); + + } + + fv_index[0] = fv_data->Duplicate(face.user_face_vertex_data[0]); + fv_index[1] = fv_data->Duplicate(face.user_face_vertex_data[1]); + fv_index[2] = fv_data->Duplicate(face.user_face_vertex_data[2]); + + mesh->AddPolygon(face.vertex_index,fv_index,3); + // bit of an unspoken relationship between mesh face buffer + // and the face data which I guess should be changed. + face_data->Duplicate(face.user_face_data); + + + face_it.Step(face_it.it); + } + + // give the user face vertex data over to the mesh. + + mesh->SetFaceVertexData(fv_data); + mesh->SetFaceData(face_data); + + // that's it + + delete[] static_cast<char *>(face.user_face_data); + delete[] static_cast<char *>(face.user_face_vertex_data[0]); + return mesh; +} + |