1 files changed, 151 insertions, 0 deletions
diff --git a/source/blender/freestyle/intern/stroke/Chain.cpp b/source/blender/freestyle/intern/stroke/Chain.cpp
new file mode 100755
index 00000000000..bf61a3b32cb
--- /dev/null
+++ b/source/blender/freestyle/intern/stroke/Chain.cpp
@@ -0,0 +1,151 @@
+
+//
+//  Copyright (C) : Please refer to the COPYRIGHT file distributed 
+//   with this source distribution. 
+//
+//  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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "Chain.h"
+#include "../view_map/ViewMapIterators.h"
+#include "../view_map/ViewMapAdvancedIterators.h"
+
+void Chain::push_viewedge_back(ViewEdge *iViewEdge, bool orientation)
+{
+  ViewEdge::vertex_iterator v;
+  ViewEdge::vertex_iterator vend;
+  ViewEdge::vertex_iterator vfirst;
+  Vec3r previous, current;
+  if(true == orientation)
+  {
+    v=iViewEdge->vertices_begin();
+    vfirst = v;
+    vend=iViewEdge->vertices_end();
+  }
+  else
+  {
+    v=iViewEdge->vertices_last();
+    vfirst = v;
+    vend=iViewEdge->vertices_end();
+  }
+
+  if(!_Vertices.empty())
+  {
+    previous = _Vertices.back()->point2d();
+    if(orientation)
+      ++v;
+    else
+      --v;
+    // Ensure the continuity of underlying FEdges
+    CurvePoint *cp = _Vertices.back(); // assumed to be instantiated as new CurvePoint(iSVertex, 0, 0.f);
+    SVertex *sv_first = (*vfirst);
+    FEdge *fe = _fedgeB->duplicate();
+    fe->setVertexB(sv_first);
+    fe->vertexA()->shape()->AddEdge(fe);
+    fe->vertexA()->AddFEdge(fe);
+    fe->vertexB()->AddFEdge(fe);
+    cp->setA(sv_first);
+  }
+  else
+    previous = (*v)->point2d(); 
+  do{
+    current = (*v)->point2d();
+    Curve::push_vertex_back(*v);
+    //_Length += (current-previous).norm();
+    previous = current;
+    if(orientation)
+      ++v;
+    else
+      --v;
+  }while((v!=vend) && (v!=vfirst));
+
+  if(v==vfirst)
+  {
+    //Add last one:
+    current = (*v)->point2d();
+    Curve::push_vertex_back(*v);
+    //_Length += (current-previous).norm();
+  }
+
+  _fedgeB = (orientation) ? iViewEdge->fedgeB() : iViewEdge->fedgeA();
+} 
+
+void Chain::push_viewedge_front(ViewEdge *iViewEdge, bool orientation)
+{
+  orientation = !orientation;
+  ViewEdge::vertex_iterator v;
+  ViewEdge::vertex_iterator vend;
+  ViewEdge::vertex_iterator vfirst;
+  Vec3r previous, current;
+  if(true == orientation)
+  {
+    v=iViewEdge->vertices_begin();
+    vfirst = v;
+    vend=iViewEdge->vertices_end();
+  }
+  else
+  {
+    v=iViewEdge->vertices_last();
+    vfirst = v;
+    vend=iViewEdge->vertices_end();
+  }
+
+  if(!_Vertices.empty())
+  {
+    previous = _Vertices.front()->point2d();
+    if(orientation)
+      ++v;
+    else
+      --v;
+    // Ensure the continuity of underlying FEdges
+    CurvePoint *cp = _Vertices.front(); // assumed to be instantiated as new CurvePoint(iSVertex, 0, 0.f);
+    SVertex *sv_last = cp->A();
+    SVertex *sv_curr = (*v);
+    FEdge *fe = (orientation) ? iViewEdge->fedgeA() : iViewEdge->fedgeB();
+    FEdge *fe2 = fe->duplicate();
+    fe2->setVertexA(sv_curr);
+    fe2->setVertexB(sv_last);
+    sv_last->AddFEdge(fe2);
+    sv_curr->AddFEdge(fe2);
+    sv_curr->shape()->AddEdge(fe2);
+  }
+  else
+    previous = (*v)->point2d(); 
+  do{
+    current = (*v)->point2d();
+    Curve::push_vertex_front((*v));
+    //_Length += (current-previous).norm();
+    previous = current;
+    if(orientation)
+      ++v;
+    else
+      --v;
+  }while((v!=vend) && (v!=vfirst));
+  
+  if(v==vfirst)
+  {
+    //Add last one:
+    current = (*v)->point2d();
+    Curve::push_vertex_front(*v);
+    //_Length += (current-previous).norm();
+  }
+
+  if (!_fedgeB)
+	_fedgeB = (orientation) ? iViewEdge->fedgeB() : iViewEdge->fedgeA();
+}
+
+
+