diff options
Diffstat (limited to 'source/blender/freestyle/intern/stroke/Chain.cpp')
| -rw-r--r-- | source/blender/freestyle/intern/stroke/Chain.cpp | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/source/blender/freestyle/intern/stroke/Chain.cpp b/source/blender/freestyle/intern/stroke/Chain.cpp new file mode 100644 index 00000000000..59cebbd5da0 --- /dev/null +++ b/source/blender/freestyle/intern/stroke/Chain.cpp @@ -0,0 +1,156 @@ +/* + * ***** 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. + * + * The Original Code is Copyright (C) 2010 Blender Foundation. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): none yet. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file blender/freestyle/intern/stroke/Chain.h + * \ingroup freestyle + * \brief Class to define a chain of viewedges. + * \author Stephane Grabli + * \date 09/01/2003 + */ + +#include "Chain.h" + +#include "../view_map/ViewMapAdvancedIterators.h" +#include "../view_map/ViewMapIterators.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(); +} |