diff options
Diffstat (limited to 'intern/decimation/intern/LOD_decimation.cpp')
| -rw-r--r-- | intern/decimation/intern/LOD_decimation.cpp | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/intern/decimation/intern/LOD_decimation.cpp b/intern/decimation/intern/LOD_decimation.cpp new file mode 100644 index 00000000000..7bbc0945424 --- /dev/null +++ b/intern/decimation/intern/LOD_decimation.cpp @@ -0,0 +1,156 @@ +/** + * $Id$ + * ***** 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 ***** + */ + +// implementation of external c api + + +#include "../extern/LOD_decimation.h" +#include "LOD_DecimationClass.h" + +using namespace std; + + int +LOD_LoadMesh( + LOD_Decimation_InfoPtr info +) { + if (info == NULL) return 0; + if ( + info->vertex_buffer == NULL || + info->vertex_normal_buffer == NULL || + info->triangle_index_buffer == NULL + ) { + return 0; + } + + + // create the intern object to hold all + // the decimation classes + + MEM_SmartPtr<LOD_DecimationClass> intern(LOD_DecimationClass::New(info)); + + if (intern == NULL) return 0; + + MEM_SmartPtr<vector<LOD_Vertex> > intern_vertex_buffer(new vector<LOD_Vertex>(info->vertex_num)); + if (intern_vertex_buffer == NULL) return 0; + + vector<LOD_Vertex>::iterator intern_vertex_it(intern_vertex_buffer->begin()); + + // now load in the vertices to the mesh + + const int vertex_stride = 3; + + float * vertex_ptr = info->vertex_buffer; + const float * vertex_end = vertex_ptr + info->vertex_num*vertex_stride; + + LOD_ManMesh2 &mesh = intern->Mesh(); + + for (;vertex_ptr < vertex_end; vertex_ptr += vertex_stride,++intern_vertex_it) { + intern_vertex_it->pos = MT_Vector3(vertex_ptr); + } + + mesh.SetVertices(intern_vertex_buffer); + + // load in the triangles + + const int triangle_stride = 3; + + int * triangle_ptr = info->triangle_index_buffer; + const int * triangle_end = triangle_ptr + info->face_num*triangle_stride; + + try { + + for (;triangle_ptr < triangle_end; triangle_ptr += triangle_stride) { + mesh.AddTriangle(triangle_ptr); + } + } + + catch (...) { + return 0; + } + + // ok we have built the mesh + + intern->m_e_decimation_state = LOD_DecimationClass::e_loaded; + + info->intern = (void *) (intern.Release()); + + return 1; +} + + int +LOD_PreprocessMesh( + LOD_Decimation_InfoPtr info +) { + if (info == NULL) return 0; + if (info->intern == NULL) return 0; + + LOD_DecimationClass *intern = (LOD_DecimationClass *) info->intern; + if (intern->m_e_decimation_state != LOD_DecimationClass::e_loaded) return 0; + + // arm the various internal classes so that we are ready to step + // through decimation + + intern->FaceEditor().BuildNormals(); + if (intern->Decimator().Arm() == false) return 0; + + // ok preprocessing done + intern->m_e_decimation_state = LOD_DecimationClass::e_preprocessed; + + return 1; +} + + int +LOD_CollapseEdge( + LOD_Decimation_InfoPtr info +){ + if (info == NULL) return 0; + if (info->intern == NULL) return 0; + LOD_DecimationClass *intern = (LOD_DecimationClass *) info->intern; + if (intern->m_e_decimation_state != LOD_DecimationClass::e_preprocessed) return 0; + + bool step_result = intern->Decimator().Step(); + + return step_result == true ? 1 : 0; +} + + + int +LOD_FreeDecimationData( + LOD_Decimation_InfoPtr info +){ + if (info == NULL) return 0; + if (info->intern == NULL) return 0; + LOD_DecimationClass *intern = (LOD_DecimationClass *) info->intern; + delete(intern); + info->intern = NULL; + return 1; +} + |