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Diffstat (limited to 'source/blender/freestyle/intern/winged_edge/Curvature.h')
| -rw-r--r-- | source/blender/freestyle/intern/winged_edge/Curvature.h | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/source/blender/freestyle/intern/winged_edge/Curvature.h b/source/blender/freestyle/intern/winged_edge/Curvature.h new file mode 100644 index 00000000000..20450dbdb38 --- /dev/null +++ b/source/blender/freestyle/intern/winged_edge/Curvature.h @@ -0,0 +1,143 @@ +/* + * ***** BEGIN GPL 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. + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * This Code is Copyright (C) 2010 Blender Foundation. + * All rights reserved. + * + * The Original Code is: + * GTS - Library for the manipulation of triangulated surfaces + * Copyright (C) 1999 Stephane Popinet + * and: + * OGF/Graphite: Geometry and Graphics Programming Library + Utilities + * Copyright (C) 2000-2003 Bruno Levy + * Contact: Bruno Levy levy@loria.fr + * ISA Project + * LORIA, INRIA Lorraine, + * Campus Scientifique, BP 239 + * 54506 VANDOEUVRE LES NANCY CEDEX + * FRANCE + * + * Contributor(s): none yet. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +#ifndef __FREESTYLE_CURVATURE_H__ +#define __FREESTYLE_CURVATURE_H__ + +/** \file blender/freestyle/intern/winged_edge/Curvature.h + * \ingroup freestyle + * \brief GTS - Library for the manipulation of triangulated surfaces + * \author Stephane Popinet + * \date 1999 + * \brief OGF/Graphite: Geometry and Graphics Programming Library + Utilities + * \author Bruno Levy + * \date 2000-2003 + */ + +#include "../geometry/Geom.h" + +#include "../system/FreestyleConfig.h" +#include "../system/Precision.h" + +using namespace Geometry; + +class WVertex; + +class LIB_WINGED_EDGE_EXPORT CurvatureInfo +{ +public: + CurvatureInfo() + { + K1 = 0.0; + K2 = 0.0; + e1 = Vec3r(0.0, 0.0, 0.0); + e2 = Vec3r(0.0, 0.0, 0.0); + Kr = 0.0; + dKr = 0.0; + er = Vec3r(0.0, 0.0, 0.0); + } + + CurvatureInfo(const CurvatureInfo& iBrother) + { + K1 = iBrother.K1; + K2 = iBrother.K2; + e1 = iBrother.e1; + e2 = iBrother.e2; + Kr = iBrother.Kr; + dKr = iBrother.dKr; + er = iBrother.er; + } + + CurvatureInfo(const CurvatureInfo& ca, const CurvatureInfo& cb, real t) + { + K1 = ca.K1 + t * (cb.K1 - ca.K1); + K2 = ca.K2 + t * (cb.K2 - ca.K2); + e1 = ca.e1 + t * (cb.e1 - ca.e1); + e2 = ca.e2 + t * (cb.e2 - ca.e2); + Kr = ca.Kr + t * (cb.Kr - ca.Kr); + dKr = ca.dKr + t * (cb.dKr - ca.dKr); + er = ca.er + t * (cb.er - ca.er); + } + + real K1; // maximum curvature + real K2; // minimum curvature + Vec3r e1; // maximum curvature direction + Vec3r e2; // minimum curvature direction + real Kr; // radial curvature + real dKr; // radial curvature + Vec3r er; // radial curvature direction +}; + +class Face_Curvature_Info +{ +public: + Face_Curvature_Info() {} + + ~Face_Curvature_Info() + { + for (vector<CurvatureInfo*>::iterator ci = vec_curvature_info.begin(), ciend = vec_curvature_info.end(); + ci != ciend; + ++ci) + { + delete (*ci); + } + vec_curvature_info.clear(); + } + + vector<CurvatureInfo *> vec_curvature_info; +}; + +bool LIB_WINGED_EDGE_EXPORT gts_vertex_mean_curvature_normal(WVertex *v, Vec3r &n); + +bool LIB_WINGED_EDGE_EXPORT gts_vertex_gaussian_curvature(WVertex *v, real *Kg); + +void LIB_WINGED_EDGE_EXPORT gts_vertex_principal_curvatures(real Kh, real Kg, real *K1, real *K2); + +void LIB_WINGED_EDGE_EXPORT gts_vertex_principal_directions(WVertex *v, Vec3r Kh, real Kg, Vec3r &e1, Vec3r &e2); + +namespace OGF { + +class NormalCycle ; + +void LIB_WINGED_EDGE_EXPORT compute_curvature_tensor( WVertex *start, double radius, NormalCycle& nc); + +void LIB_WINGED_EDGE_EXPORT compute_curvature_tensor_one_ring(WVertex *start, NormalCycle& nc); + +} // OGF namespace + +#endif /* __FREESTYLE_CURVATURE_H__ */ |