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/******************************************************************************
* SOFA, Simulation Open-Framework Architecture, version 1.0 beta 4 *
* (c) 2006-2009 MGH, INRIA, USTL, UJF, CNRS *
* *
* 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; either version 2.1 of the License, or (at *
* your option) any later version. *
* *
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
*******************************************************************************
* SOFA :: Modules *
* *
* Authors: The SOFA Team and external contributors (see Authors.txt) *
* *
* Contact information: contact@sofa-framework.org *
******************************************************************************/
/*
* OglShaderVisualModel.cpp
*
* Created on: 9 févr. 2009
* Author: froy
*/
#include <sofa/component/visualmodel/OglShaderVisualModel.h>
#include <sofa/core/ObjectFactory.h>
#include <sofa/component/topology/PointSetTopologyChange.h>
#include <sofa/component/topology/TriangleSetTopologyChange.h>
#include <sofa/component/topology/QuadSetTopologyChange.h>
#include <sofa/component/topology/TetrahedronSetTopologyChange.h>
#include <sofa/component/topology/HexahedronSetTopologyChange.h>
#include <sofa/component/topology/PointSetGeometryAlgorithms.h>
#include <sofa/simulation/common/Node.h>
#include <sofa/defaulttype/VecTypes.h>
namespace sofa
{
namespace component
{
namespace visualmodel
{
using namespace sofa::core::componentmodel::topology;
using namespace sofa::core::componentmodel::behavior;
SOFA_DECL_CLASS(OglShaderVisualModel)
int OglShaderVisualModelClass = core::RegisterObject("Visual model for OpenGL display using Glew extensions")
.add< OglShaderVisualModel >()
;
OglShaderVisualModel::OglShaderVisualModel()
{
// TODO Auto-generated constructor stub
vrestpositions.setContext( this->getContext());
vrestpositions.setID( std::string("restPosition"));
vrestpositions.setIndexShader( 0);
vrestnormals.setContext( this->getContext());
vrestnormals.setID( "restNormal");
vrestnormals.setIndexShader( 0);
}
OglShaderVisualModel::~OglShaderVisualModel()
{
// TODO Auto-generated destructor stub
}
void OglShaderVisualModel::init()
{
OglModel::init();
sofa::core::objectmodel::BaseContext* context = this->getContext();
shader = context->core::objectmodel::BaseContext::get<OglShader>();
if( shader)
{
vrestpositions.setContext( this->getContext());
vrestpositions.init();
ResizableExtVector<Coord>& vrestpos = * ( vrestpositions.beginEdit() );
vrestpos.resize ( vertices.size() );
for ( unsigned int i = 0; i < vertices.size(); i++ )
{
vrestpos[i] = vertices[i];
}
vrestpositions.endEdit();
vrestnormals.setContext( this->getContext());
vrestnormals.init();
ResizableExtVector<Coord>& vrestnorm = * ( vrestnormals.beginEdit() );
vrestnorm.resize ( vnormals.size() );
for ( unsigned int i = 0; i < vnormals.size(); i++ )
{
vrestnorm[i] = vnormals[i];
}
vrestnormals.endEdit();
}
}
void OglShaderVisualModel::initVisual()
{
OglModel::initVisual();
//Store other attributes
if(shader)
{
vrestpositions.initVisual();
vrestnormals.initVisual();
}
}
void OglShaderVisualModel::handleTopologyChange()
{
vrestpositions.handleTopologyChange();
vrestnormals.handleTopologyChange();
VisualModelImpl::handleTopologyChange();
//TODO// update the rest position when inserting a point. Then, call computeNormals() to update the attributes.
// Not done here because we don't have the rest position of the model.
// For the moment, the only class using dynamic topology is HexaToTriangleTopologicalMapping which update itself the attributes...
}
void OglShaderVisualModel::computeRestNormals()
{
const ResizableExtVector<Coord>& vrestpos = vrestpositions.getValue();
ResizableExtVector<Coord>& restNormals = * ( vrestnormals.beginEdit() );
for (unsigned int i = 0; i < triangles.size() ; i++)
{
const Coord v1 = vrestpos[triangles[i][0]];
const Coord v2 = vrestpos[triangles[i][1]];
const Coord v3 = vrestpos[triangles[i][2]];
Coord n = cross(v2-v1, v3-v1);
n.normalize();
restNormals[triangles[i][0]] += n;
restNormals[triangles[i][1]] += n;
restNormals[triangles[i][2]] += n;
}
for (unsigned int i = 0; i < quads.size() ; i++)
{
const Coord & v1 = vrestpos[quads[i][0]];
const Coord & v2 = vrestpos[quads[i][1]];
const Coord & v3 = vrestpos[quads[i][2]];
const Coord & v4 = vrestpos[quads[i][3]];
Coord n1 = cross(v2-v1, v4-v1);
Coord n2 = cross(v3-v2, v1-v2);
Coord n3 = cross(v4-v3, v2-v3);
Coord n4 = cross(v1-v4, v3-v4);
n1.normalize(); n2.normalize(); n3.normalize(); n4.normalize();
restNormals[quads[i][0]] += n1;
restNormals[quads[i][1]] += n2;
restNormals[quads[i][2]] += n3;
restNormals[quads[i][3]] += n4;
}
for (unsigned int i = 0; i < restNormals.size(); i++)
{
restNormals[i].normalize();
}
vrestnormals.endEdit();
}
} //namespace visualmodel
} //namespace component
} //namespace sofa
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