convhull_3d.h

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/*
 Copyright (c) 2017-2018 Leo McCormack
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 
 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
*/
 
#ifndef CONVHULL_3D_INCLUDED
#define CONVHULL_3D_INCLUDED
 
#if !defined(__cplusplus) && defined(_MSC_VER)
# pragma warning(disable : 4201)
#endif
 
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
 
#ifdef CONVHULL_3D_USE_FLOAT_PRECISION
typedef float CH_FLOAT;
#else
typedef double CH_FLOAT;
#endif
typedef struct _ch_vertex {
    union{
        struct{
            CH_FLOAT x, y, z;
        };
        CH_FLOAT v[3];
    };
} ch_vertex;
typedef ch_vertex ch_vec3;
 
void convhull_3d_build(/* Input arguments */
                       ch_vertex* const in_vertices,
                       const int nVert,
                       /* Output arguments */
                       int** out_faces,
                       CH_FLOAT** out_cf,
                       CH_FLOAT** out_df,
                       int* nOut_faces);
 
void convhull_nd_build(/* Input arguments */
                       CH_FLOAT* const in_vertices,
                       const int nVert,
                       const int d,
                       /* Output arguments */
                       int** out_faces,
                       CH_FLOAT** out_cf,
                       CH_FLOAT** out_df,
                       int* nOut_faces);
 
void convhull_3d_export_obj(/* Input arguments */
                            ch_vertex* const vertices,
                            const int nVert,
                            int* const faces,
                            const int nFaces,
                            const int keepOnlyUsedVerticesFLAG,
                            char* const obj_filename);
 
void convhull_3d_export_m(/* Input arguments */
                          ch_vertex* const vertices,
                          const int nVert,
                          int* const faces,
                          const int nFaces,
                          char* const m_filename);
 
void extractVerticesFromObjFile(/* Input arguments */
                                char* const obj_filename,
                                /* Output arguments */
                                ch_vertex** out_vertices,
                                int* out_nVert);        
 
#ifdef __cplusplus
} /*extern "C"*/
#endif /* __cplusplus */
 
#endif /* CONVHULL_3D_INCLUDED */