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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* 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
* OpenSceneGraph Public License for more details.
*/
#ifndef OSG_CLUSTERCULLINGCALLBACK
#define OSG_CLUSTERCULLINGCALLBACK 1
#include <osg/Drawable>
#include <osg/NodeCallback>
namespace osg {
/** Implements cluster culling to cull back facing drawables. Derived from
* Drawable::CullCallback.
*/
class OSG_EXPORT ClusterCullingCallback : public Drawable::CullCallback, public NodeCallback
{
public:
ClusterCullingCallback();
ClusterCullingCallback(const ClusterCullingCallback& ccc,const CopyOp& copyop);
ClusterCullingCallback(const osg::Vec3& controlPoint, const osg::Vec3& normal, float deviation);
ClusterCullingCallback(const osg::Drawable* drawable);
META_Object(osg,ClusterCullingCallback);
/** Computes the control point, normal, and deviation from the
* given drawable contents. */
void computeFrom(const osg::Drawable* drawable);
/** Transform the ClusterCullingCallback's positional members to a new coordinate frame.*/
void transform(const osg::Matrixd& matrix);
void set(const osg::Vec3& controlPoint, const osg::Vec3& normal, float deviation, float radius);
void setControlPoint(const osg::Vec3& controlPoint) { _controlPoint = controlPoint; }
const osg::Vec3& getControlPoint() const { return _controlPoint; }
void setNormal(const osg::Vec3& normal) { _normal = normal; }
const osg::Vec3& getNormal() const { return _normal; }
void setRadius(float radius) { _radius = radius; }
float getRadius() const { return _radius; }
void setDeviation(float deviation) { _deviation = deviation; }
float getDeviation() const { return _deviation; }
virtual bool cull(osg::NodeVisitor*, osg::Drawable*, osg::State*) const;
/** Callback method called by the NodeVisitor when visiting a node.*/
virtual void operator()(Node* node, NodeVisitor* nv);
protected:
virtual ~ClusterCullingCallback() {}
osg::Vec3 _controlPoint;
osg::Vec3 _normal;
float _radius;
float _deviation;
};
}
#endif