forked from bartvdbraak/blender
114 lines
3.1 KiB
C
114 lines
3.1 KiB
C
/**
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* $Id$
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/**
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* @author Laurence Bourn
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* @date 6/7/2001
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*
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* This is the external interface for the decimation module.
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*/
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#ifndef NAN_INCLUDED_LOD_decimation_h
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#define NAN_INCLUDED_LOD_decimation_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* External decimation structure
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*/
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typedef struct LOD_Decimation_Info {
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float * vertex_buffer;
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float * vertex_normal_buffer;
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int * triangle_index_buffer;
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int vertex_num;
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int face_num;
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void * intern;
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} LOD_Decimation_Info;
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typedef LOD_Decimation_Info* LOD_Decimation_InfoPtr;
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/**
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* Create internal mesh representation from
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* LOD_Decimation_Info structure.
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* @return 1 on successful loading
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* @return 0 on failure
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* @warning This should be changed to return an enumeration
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* detailing the error encountered
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*/
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extern int LOD_LoadMesh(LOD_Decimation_InfoPtr info);
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/**
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* Allocate and Compute internal data strucures required for
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* decimation.
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* @return 1 on successful computation of data
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* @return 0 on failure
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* @warning This should be changed to return an enumeration
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* detailing the error encountered
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*/
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extern int LOD_PreprocessMesh(LOD_Decimation_InfoPtr info);
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/**
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* Once both the stages above have been completed
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* this function collapses a single edge in the mesh.
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* The LOD_Decimation_Info structure is updated
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* to represent the new mesh.
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* @return 1 if an edge was collapsed.
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* @return 0 if no suitable edge was found to be collapsable
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* You should stop calling this method in this case
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* @warning Do not expect that the order of polygons, vertices or
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* vertex normals will be preserved by this operation. This function
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* returns a packed array of polygons and vertices and so necessarily
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* the order will be different. This means you should not expect to
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* find the same polygon in the same place in the polygon array after
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* this function has been called.
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*/
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extern int LOD_CollapseEdge(LOD_Decimation_InfoPtr info);
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/**
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* Free any memory the decimation process used
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* during the decimation process
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* @return 1 if internal data successfully freed
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* @return 0 if no data was freed
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*/
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extern int LOD_FreeDecimationData(LOD_Decimation_InfoPtr);
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#ifdef __cplusplus
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}
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#endif
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#endif // NAN_INCLUDED_LOD_decimation_h
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