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/*
* ***** 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__ */
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