d8482ef1ba
One solution is naturally to create a new class that would inherit the osg::ComputeBoundVisitor, and use that. I don't like that idea as the ComputeBoundVisitor does actually have what I need - it is only hidden in a protected function. I am therefor suggesting a slight generalization of the ComputeBoundVisitor with the attached patch, which is tested. The patch has two parts: we add applyBBox() so that one can use that in a customized traverse-function and add a bbox to the visitor. I considered calling this function expandByBBox(), but I though applyBBox was better. The MatrixStack is made available to the outside world. That enables a traverse-function to do whatever it wishes. I do actually only need one of the two, as I can implement what I wish either way, but adding getMatrixStack() will make more generic expansions possible. " From Robert Osfield, changed the name of the new applyBBox(..) method to applyBoundingBox(..) to keep it's naming more consistent with the rest of the OSG.
65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
/* -*-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_COMPUTEBOUNDSVISITOR
|
|
#define OSG_COMPUTEBOUNDSVISITOR 1
|
|
|
|
#include <osg/NodeVisitor>
|
|
#include <osg/BoundingBox>
|
|
#include <osg/Polytope>
|
|
|
|
namespace osg {
|
|
|
|
class OSG_EXPORT ComputeBoundsVisitor : public osg::NodeVisitor
|
|
{
|
|
public:
|
|
|
|
ComputeBoundsVisitor(TraversalMode traversalMode = TRAVERSE_ALL_CHILDREN);
|
|
|
|
META_NodeVisitor(osg, ComputeBoundsVisitor)
|
|
|
|
virtual void reset();
|
|
|
|
osg::BoundingBox& getBoundingBox() { return _bb; }
|
|
|
|
void getPolytope(osg::Polytope& polytope, float margin=0.1) const;
|
|
|
|
void getBase(osg::Polytope& polytope, float margin=0.1) const;
|
|
|
|
void apply(osg::Node& node);
|
|
|
|
void apply(osg::Transform& transform);
|
|
|
|
void apply(osg::Geode& geode);
|
|
|
|
inline void pushMatrix(osg::Matrix& matrix) { _matrixStack.push_back(matrix); }
|
|
|
|
inline void popMatrix() { _matrixStack.pop_back(); }
|
|
|
|
void applyDrawable(osg::Drawable* drawable);
|
|
|
|
void applyBoundingBox(const osg::BoundingBox&);
|
|
|
|
typedef std::vector<osg::Matrix> MatrixStack;
|
|
|
|
const MatrixStack& getMatrixStack() const { return _matrixStack; }
|
|
|
|
protected:
|
|
MatrixStack _matrixStack;
|
|
osg::BoundingBox _bb;
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|