First checkin for OpenMesh 2.0

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@2 fdac6126-5c0c-442c-9429-916003d36597
2009-02-06 13:37:46 +00:00
parent c3321ebdd9
commit 97f515985d
417 changed files with 76182 additions and 0 deletions
--- a/Tools/Decimater/ModQuadricT.cc
+++ b/Tools/Decimater/ModQuadricT.cc
@@ -0,0 +1,125 @@
+//=============================================================================
+//
+//                               OpenMesh
+//        Copyright (C) 2003 by Computer Graphics Group, RWTH Aachen
+//                           www.openmesh.org
+//
+//-----------------------------------------------------------------------------
+//
+//                                License
+//
+//   This library is free software; you can redistribute it and/or modify it
+//   under the terms of the GNU Lesser General Public License as published 
+//   by the Free Software Foundation, version 2.
+//
+//   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
+//   Lesser General Public License for more details. 
+//
+//   You should have received a copy of the GNU Lesser General Public 
+//   License along with this library; if not, write to the Free Software
+//   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+//-----------------------------------------------------------------------------
+//
+//   $Revision: 1802 $
+//   $Date: 2008-05-19 11:55:07 +0200 (Mo, 19. Mai 2008) $
+//
+//=============================================================================
+
+/** \file ModQuadricT.cc
+    Bodies of template member function.
+ */
+
+//=============================================================================
+//
+//  CLASS ModQuadric - IMPLEMENTATION
+//
+//=============================================================================
+
+#define OPENMESH_DECIMATER_MODQUADRIC_CC
+
+//== INCLUDES =================================================================
+
+#include <OpenMesh/Tools/Decimater/ModQuadricT.hh>
+
+
+//== NAMESPACE ===============================================================
+
+namespace OpenMesh { // BEGIN_NS_OPENMESH
+namespace Decimater { // BEGIN_NS_DECIMATER
+
+
+//== IMPLEMENTATION ==========================================================
+
+
+template<class DecimaterType>
+void
+ModQuadricT<DecimaterType>::
+initialize()
+{
+  using Geometry::Quadricd;
+  // alloc quadrics
+  if (!quadrics_.is_valid())
+    Base::mesh().add_property( quadrics_ );
+
+  // clear quadrics
+  typename Mesh::VertexIter  v_it  = Base::mesh().vertices_begin(),
+                             v_end = Base::mesh().vertices_end();
+
+  for (; v_it != v_end; ++v_it)
+    Base::mesh().property(quadrics_, v_it).clear();
+
+  // calc (normal weighted) quadric
+  typename Mesh::FaceIter          f_it  = Base::mesh().faces_begin(),
+                                   f_end = Base::mesh().faces_end();
+
+  typename Mesh::FaceVertexIter    fv_it;
+  typename Mesh::VertexHandle      vh0, vh1, vh2;
+  typedef Vec3d                    Vec3;
+  double                           a,b,c,d, area;
+
+  for (; f_it != f_end; ++f_it)
+  {
+    fv_it = Base::mesh().fv_iter(f_it.handle());
+    vh0 = fv_it.handle();  ++fv_it;
+    vh1 = fv_it.handle();  ++fv_it;
+    vh2 = fv_it.handle();
+
+    Vec3 v0, v1, v2;
+    {
+      using namespace OpenMesh;
+
+      v0 = vector_cast<Vec3>(Base::mesh().point(vh0));
+      v1 = vector_cast<Vec3>(Base::mesh().point(vh1));
+      v2 = vector_cast<Vec3>(Base::mesh().point(vh2));
+    }
+
+    Vec3 n = (v1-v0) % (v2-v0);
+    area = n.norm();
+    if (area > FLT_MIN)
+    {
+      n /= area;
+      area *= 0.5;
+    }
+
+    a = n[0];
+    b = n[1];
+    c = n[2];
+    d = -(vector_cast<Vec3>(Base::mesh().point(vh0))|n);
+
+    Quadricd q(a, b, c, d);
+    q *= area;
+
+    Base::mesh().property(quadrics_, vh0) += q;
+    Base::mesh().property(quadrics_, vh1) += q;
+    Base::mesh().property(quadrics_, vh2) += q;
+  }
+}
+
+
+//=============================================================================
+} // END_NS_DECIMATER
+} // END_NS_OPENMESH
+//=============================================================================