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/* GTS - Library for the manipulation of triangulated surfaces
* Copyright (C) 1999 Stéphane Popinet
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __CURVATURE_H__
#define __CURVATURE_H__
# include "../system/FreestyleConfig.h"
# include "../system/Precision.h"
# include "../geometry/Geom.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);
/*
* OGF/Graphite: Geometry and Graphics Programming Library + Utilities
* Copyright (C) 2000-2003 Bruno Levy
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* If you modify this software, you should include a notice giving the
* name of the person performing the modification, the date of modification,
* and the reason for such modification.
*
* Contact: Bruno Levy
*
* levy@loria.fr
*
* ISA Project
* LORIA, INRIA Lorraine,
* Campus Scientifique, BP 239
* 54506 VANDOEUVRE LES NANCY CEDEX
* FRANCE
*
* Note that the GNU General Public License does not permit incorporating
* the Software into proprietary programs.
*/
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
) ;
}
#endif /* __CURVATURE_H__ */
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