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//
// Filename : ViewMapTesselator.h
// Author(s) : Stephane Grabli
// Purpose : Class to build a Node Tree designed to be displayed
// from a Silhouette View Map structure.
// Date of creation : 26/03/2002
//
///////////////////////////////////////////////////////////////////////////////
//
// 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.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef VIEWMAPTESSELATOR_H
# define VIEWMAPTESSELATOR_H
# include "../scene_graph/NodeShape.h"
# include "../winged_edge/WEdge.h"
# include "Silhouette.h"
# include "ViewMap.h"
# include "../scene_graph/NodeGroup.h"
# include "../scene_graph/LineRep.h"
# include "../scene_graph/OrientedLineRep.h"
# include "../scene_graph/VertexRep.h"
class NodeShape;
class NodeGroup;
class SShape;
class WShape;
class LIB_VIEW_MAP_EXPORT ViewMapTesselator
{
public:
inline ViewMapTesselator() {_nature = Nature::SILHOUETTE | Nature::BORDER | Nature::CREASE;_Material.SetDiffuse(0,0,0,1);_overloadMaterial=false;}
virtual ~ViewMapTesselator() {}
/*! Builds a set of lines rep contained under a
* a NodeShape, itself contained under a NodeGroup from a ViewMap
*/
NodeGroup* Tesselate(ViewMap* iViewMap) ;
/*! Builds a set of lines rep contained under a
* a NodeShape, itself contained under a NodeGroup from a
* set of view edges
*/
template<class ViewEdgesIterator>
NodeGroup* Tesselate(ViewEdgesIterator begin, ViewEdgesIterator end) ;
/*! Builds a set of lines rep contained among a
* a NodeShape, from a WShape
*/
NodeGroup* Tesselate(WShape* iWShape);
inline void SetNature(Nature::EdgeNature iNature) {_nature = iNature;}
inline void SetMaterial(const Material& iMaterial) {_Material=iMaterial;_overloadMaterial=true;}
inline Nature::EdgeNature nature() {return _nature;}
inline const Material& material() const {return _Material;}
protected:
virtual void AddVertexToLine(LineRep *iLine, SVertex *v) = 0;
private:
Nature::EdgeNature _nature;
Material _Material;
bool _overloadMaterial;
};
/*! Class to tesselate the 2D projected silhouette */
class ViewMapTesselator2D : public ViewMapTesselator
{
public:
inline ViewMapTesselator2D() : ViewMapTesselator() {}
virtual ~ViewMapTesselator2D() {}
protected:
virtual void AddVertexToLine(LineRep *iLine, SVertex *v)
{
iLine->AddVertex(v->point2D());
}
};
/*! Class to tesselate the 3D silhouette */
class ViewMapTesselator3D : public ViewMapTesselator
{
public:
inline ViewMapTesselator3D() : ViewMapTesselator() {}
virtual ~ViewMapTesselator3D() {}
protected:
virtual void AddVertexToLine(LineRep *iLine, SVertex *v)
{
iLine->AddVertex(v->point3D());
}
};
//
// Implementation
//
///////////////////////////////////////////////
template<class ViewEdgesIterator>
NodeGroup * ViewMapTesselator::Tesselate(ViewEdgesIterator begin, ViewEdgesIterator end)
{
NodeGroup *group = new NodeGroup;
NodeShape *tshape = new NodeShape;
group->AddChild(tshape);
//tshape->material().SetDiffuse(0.f, 0.f, 0.f, 1.f);
tshape->SetMaterial(_Material);
LineRep* line;
FEdge *firstEdge;
FEdge *nextFEdge, *currentEdge;
int id=0;
// for(vector<ViewEdge*>::const_iterator c=viewedges.begin(),cend=viewedges.end();
// c!=cend;
// c++)
for(ViewEdgesIterator c=begin, cend=end;
c!=cend;
c++)
{
// if((*c)->qi() > 0){
// continue;
// }
// if(!((*c)->nature() & (_nature)))
// continue;
//
firstEdge = (*c)->fedgeA();
// if(firstEdge->invisibility() > 0)
// continue;
line = new OrientedLineRep();
if(_overloadMaterial)
line->SetMaterial(_Material);
// there might be chains containing a single element
if(0 == (firstEdge)->nextEdge())
{
line->SetStyle(LineRep::LINES);
// line->AddVertex((*c)->vertexA()->point3D());
// line->AddVertex((*c)->vertexB()->point3D());
AddVertexToLine(line, firstEdge->vertexA());
AddVertexToLine(line, firstEdge->vertexB());
}
else
{
line->SetStyle(LineRep::LINE_STRIP);
//firstEdge = (*c);
nextFEdge = firstEdge;
currentEdge = firstEdge;
do
{
//line->AddVertex(nextFEdge->vertexA()->point3D());
AddVertexToLine(line, nextFEdge->vertexA());
currentEdge = nextFEdge;
nextFEdge = nextFEdge->nextEdge();
}while((nextFEdge != NULL) && (nextFEdge != firstEdge));
// Add the last vertex
//line->AddVertex(currentEdge->vertexB()->point3D());
AddVertexToLine(line, currentEdge->vertexB());
}
line->SetId((*c)->getId().getFirst());
line->ComputeBBox();
tshape->AddRep(line);
id++;
}
return group;
}
#endif // VIEWMAPTESSELATOR_H
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