nuclear@5: /*
nuclear@5: metasurf - a library for implicit surface polygonization
nuclear@5: Copyright (C) 2011  John Tsiombikas <nuclear@member.fsf.org>
nuclear@5: 
nuclear@5: This program is free software: you can redistribute it and/or modify
nuclear@5: it under the terms of the GNU Lesser General Public License as published by
nuclear@5: the Free Software Foundation, either version 3 of the License, or
nuclear@5: (at your option) any later version.
nuclear@5: 
nuclear@5: This program is distributed in the hope that it will be useful,
nuclear@5: but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@5: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nuclear@5: GNU Lesser General Public License for more details.
nuclear@5: 
nuclear@5: You should have received a copy of the GNU Lesser General Public License
nuclear@5: along with this program.  If not, see <http://www.gnu.org/licenses/>.
nuclear@5: */
nuclear@5: 
nuclear@5: #ifndef METASURF_H_
nuclear@5: #define METASURF_H_
nuclear@5: 
nuclear@5: #define MSURF_GREATER	1
nuclear@5: #define MSURF_LESS		0
nuclear@5: 
nuclear@5: struct metasurface;
nuclear@5: 
nuclear@5: typedef float (*msurf_eval_func_t)(float, float, float);
nuclear@5: typedef void (*msurf_vertex_func_t)(float, float, float);
nuclear@5: typedef void (*msurf_normal_func_t)(float, float, float);
nuclear@5: 
nuclear@5: #ifdef __cplusplus
nuclear@5: extern "C" {
nuclear@5: #endif
nuclear@5: 
nuclear@5: struct metasurface *msurf_create(void);
nuclear@5: void msurf_free(struct metasurface *ms);
nuclear@5: 
nuclear@5: /* which is inside above or below the threshold */
nuclear@5: void msurf_inside(struct metasurface *ms, int inside);
nuclear@5: 
nuclear@5: /* set a scalar field evaluator function */
nuclear@5: void msurf_eval_func(struct metasurface *ms, msurf_eval_func_t func);
nuclear@5: 
nuclear@5: /* set a generated vertex callback function */
nuclear@5: void msurf_vertex_func(struct metasurface *ms, msurf_vertex_func_t func);
nuclear@5: 
nuclear@5: /* set a generated surface normal callback function (unused yet) */
nuclear@5: void msurf_normal_func(struct metasurface *ms, msurf_normal_func_t func);
nuclear@5: 
nuclear@5: /* set the bounding box (default: -1, -1, -1, 1, 1, 1)
nuclear@5:  * keep this as tight as possible to avoid wasting grid resolution
nuclear@5:  */
nuclear@5: void msurf_bounds(struct metasurface *ms, float xmin, float ymin, float zmin, float xmax, float ymax, float zmax);
nuclear@5: 
nuclear@5: /* resolution of the 3D evaluation grid, the bigger, the better, the slower
nuclear@5:  * (default: 40, 40, 40)
nuclear@5:  */
nuclear@5: void msurf_resolution(struct metasurface *ms, int xres, int yres, int zres);
nuclear@5: 
nuclear@5: /* isosurface threshold value (default: 0) */
nuclear@5: void msurf_threshold(struct metasurface *ms, float thres);
nuclear@5: 
nuclear@5: 
nuclear@5: /* finally call this to perform the polygonization */
nuclear@5: int msurf_polygonize(struct metasurface *ms);
nuclear@5: 
nuclear@5: 
nuclear@5: #ifdef __cplusplus
nuclear@5: }
nuclear@5: #endif
nuclear@5: 
nuclear@5: #endif	/* METASURF_H_ */