71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
/*
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2012 Blender Foundation.
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* All rights reserved.
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*
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* Contributor(s): Sergey Sharybin
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#ifndef __BLI_VORONOI_H__
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#define __BLI_VORONOI_H__
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struct ListBase;
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/** \file BLI_voronoi.h
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* \ingroup bli
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*/
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typedef struct VoronoiSite {
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float co[2];
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float color[3];
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} VoronoiSite;
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typedef struct VoronoiEdge {
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struct VoronoiEdge *next, *prev;
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float start[2], end[2]; /* start and end points */
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/* this fields are used during diagram computation only */
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float direction[2]; /* directional vector, from "start", points to "end", normal of |left, right| */
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float left[2]; /* point on Voronoi place on the left side of edge */
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float right[2]; /* point on Voronoi place on the right side of edge */
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float f, g; /* directional coeffitients satisfying equation y = f * x + g (edge lies on this line) */
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/* some edges consist of two parts, so we add the pointer to another part to connect them at the end of an algorithm */
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struct VoronoiEdge *neighbor;
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} VoronoiEdge;
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typedef struct VoronoiTriangulationPoint {
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float co[2];
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float color[3];
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int power;
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} VoronoiTriangulationPoint;
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void BLI_voronoi_compute(const VoronoiSite *sites, int sites_total, int width, int height, struct ListBase *edges);
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void BLI_voronoi_triangulate(const VoronoiSite *sites, int sites_total, struct ListBase *edges, int width, int height,
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VoronoiTriangulationPoint **triangulated_points_r, int *triangulated_points_total_r,
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int (**triangles_r)[3], int *triangles_total_r);
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#endif /* __BLI_VORONOI_H__ */
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