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89 lines
3.8 KiB
89 lines
3.8 KiB
/**************************************************************************** |
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* VCGLib o o * |
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* Visual and Computer Graphics Library o o * |
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* _ O _ * |
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* Copyright(C) 2004-2016 \/)\/ * |
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* Visual Computing Lab /\/| * |
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* ISTI - Italian National Research Council | * |
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* \ * |
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* All rights reserved. * |
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* * |
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* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (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 (http://www.gnu.org/licenses/gpl.txt) * |
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* for more details. * |
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* * |
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****************************************************************************/ |
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#ifndef __VCG_TRI_UPDATE_EDGES |
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#define __VCG_TRI_UPDATE_EDGES |
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#include <vcg/space/plane3.h> |
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namespace vcg { |
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namespace tri { |
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/// \ingroup trimesh |
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/// \brief This class is used to compute or update the precomputed data used to efficiently compute point-face distances. |
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template <class ComputeMeshType> |
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class UpdateComponentEP |
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{ |
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public: |
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typedef ComputeMeshType MeshType; |
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typedef typename MeshType::VertexType VertexType; |
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typedef typename MeshType::VertexPointer VertexPointer; |
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typedef typename MeshType::VertexIterator VertexIterator; |
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typedef typename MeshType::FaceType FaceType; |
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typedef typename MeshType::FacePointer FacePointer; |
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typedef typename MeshType::FaceIterator FaceIterator; |
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typedef typename MeshType::FaceType::CoordType::ScalarType ScalarType; |
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static void ComputeEdgePlane(FaceType &f) |
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{ |
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f.Flags() = f.Flags() & (~(FaceType::NORMX|FaceType::NORMY|FaceType::NORMZ)); |
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// Primo calcolo degli edges |
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f.Edge(0) = f.V(1)->P(); f.Edge(0) -= f.V(0)->P(); |
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f.Edge(1) = f.V(2)->P(); f.Edge(1) -= f.V(1)->P(); |
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f.Edge(2) = f.V(0)->P(); f.Edge(2) -= f.V(2)->P(); |
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// Calcolo di plane |
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f.Plane().SetDirection(f.Edge(0)^f.Edge(1)); |
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f.Plane().SetOffset(f.Plane().Direction().dot(f.V(0)->P())); |
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f.Plane().Normalize(); |
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// Calcolo migliore proiezione |
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ScalarType nx = math::Abs(f.Plane().Direction()[0]); |
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ScalarType ny = math::Abs(f.Plane().Direction()[1]); |
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ScalarType nz = math::Abs(f.Plane().Direction()[2]); |
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ScalarType d; |
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if(nx>ny && nx>nz) { f.Flags() |= FaceType::NORMX; d = 1/f.Plane().Direction()[0]; } |
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else if(ny>nz) { f.Flags() |= FaceType::NORMY; d = 1/f.Plane().Direction()[1]; } |
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else { f.Flags() |= FaceType::NORMZ; d = 1/f.Plane().Direction()[2]; } |
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// Scalatura spigoli |
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f.Edge(0)*=d; |
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f.Edge(1)*=d; |
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f.Edge(2)*=d; |
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} |
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static void Set(ComputeMeshType &m) |
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{ |
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if(!FaceType::HasEdgePlane()) throw vcg::MissingComponentException("PerFaceEdgePlane"); |
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for(FaceIterator f = m.face.begin(); f!=m.face.end(); ++f) |
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if(!(*f).IsD()) |
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ComputeEdgePlane(*f); |
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} |
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}; // end class |
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} // End namespace |
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} // End namespace |
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#endif
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