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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 *
******************************************************************************/
#include <sofa/component/visualmodel/ClipPlane.h>
#include <sofa/core/ObjectFactory.h>
namespace sofa
{
namespace component
{
namespace visualmodel
{
SOFA_DECL_CLASS(ClipPlane)
int ClipPlaneClass = core::RegisterObject("OpenGL Clipping Plane")
.add< ClipPlane >()
;
ClipPlane::ClipPlane()
: position(initData(&position, Vector3(0,0,0), "position", "Point crossed by the clipping plane"))
, normal(initData(&normal, Vector3(1,0,0), "normal", "Normal of the clipping plane, pointing toward the clipped region"))
, id(initData(&id, 0, "id", "Clipping plane OpenGL ID"))
, active(initData(&active,true,"active","Control whether the clipping plane should be applied or not"))
{
}
ClipPlane::~ClipPlane()
{
}
void ClipPlane::init()
{
}
void ClipPlane::reinit()
{
}
void ClipPlane::fwdDraw(Pass)
{
wasActive = glIsEnabled(GL_CLIP_PLANE0+id.getValue());
if (active.getValue())
{
glGetClipPlane(GL_CLIP_PLANE0+id.getValue(), saveEq);
Vector3 p = position.getValue();
Vector3 n = normal.getValue();
GLdouble c[4] = { (GLdouble) -n[0], (GLdouble)-n[1], (GLdouble)-n[2], (GLdouble)(p*n) };
glClipPlane(GL_CLIP_PLANE0+id.getValue(), c);
if (!wasActive)
glEnable(GL_CLIP_PLANE0+id.getValue());
}
else
{
if (wasActive)
glDisable(GL_CLIP_PLANE0+id.getValue());
}
}
void ClipPlane::bwdDraw(Pass)
{
if (active.getValue())
{
glClipPlane(GL_CLIP_PLANE0+id.getValue(), saveEq);
if (!wasActive)
glDisable(GL_CLIP_PLANE0+id.getValue());
}
else
{
if (wasActive)
glEnable(GL_CLIP_PLANE0+id.getValue());
}
}
} // namespace visualmodel
} //namespace component
} //namespace sofa
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