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/* -*-c++-*-
* Copyright (C) 2008 Cedric Pinson <cedric.pinson@plopbyte.net>
*
* 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 OSGANIMATION_RIGGEOMETRY_H
#define OSGANIMATION_RIGGEOMETRY_H
#include <osgAnimation/Export>
#include <osgAnimation/Skeleton>
#include <osgAnimation/RigTransform>
#include <osgAnimation/VertexInfluence>
#include <osg/Geometry>
namespace osgAnimation
{
// The idea is to compute a bounding box with a factor x of the first step we compute the bounding box
class OSGANIMATION_EXPORT RigComputeBoundingBoxCallback : public osg::Drawable::ComputeBoundingBoxCallback
{
public:
RigComputeBoundingBoxCallback(double factor = 2.0): _computed(false), _factor(factor) {}
RigComputeBoundingBoxCallback(const RigComputeBoundingBoxCallback& rhs, const osg::CopyOp& copyop) :
osg::Drawable::ComputeBoundingBoxCallback(rhs, copyop),
_computed(false),
_factor(rhs._factor) {}
META_Object(osgAnimation, RigComputeBoundingBoxCallback);
void reset() { _computed = false; }
virtual osg::BoundingBox computeBound(const osg::Drawable& drawable) const;
protected:
mutable bool _computed;
double _factor;
mutable osg::BoundingBox _boundingBox;
};
class OSGANIMATION_EXPORT RigGeometry : public osg::Geometry
{
public:
RigGeometry();
RigGeometry(const RigGeometry& b, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY);
META_Object(osgAnimation, RigGeometry);
inline void setInfluenceMap(VertexInfluenceMap* vertexInfluenceMap) { _vertexInfluenceMap = vertexInfluenceMap; }
inline const VertexInfluenceMap* getInfluenceMap() const { return _vertexInfluenceMap.get(); }
inline VertexInfluenceMap* getInfluenceMap() { return _vertexInfluenceMap.get(); }
inline const Skeleton* getSkeleton() const { return _root.get(); }
inline Skeleton* getSkeleton() { return _root.get(); }
// will be used by the update callback to init correctly the rig mesh
inline void setSkeleton(Skeleton* root) { _root = root; }
void setNeedToComputeMatrix(bool state) { _needToComputeMatrix = state; }
bool getNeedToComputeMatrix() const { return _needToComputeMatrix; }
void computeMatrixFromRootSkeleton();
// set implementation of rig method
inline RigTransform* getRigTransformImplementation() { return _rigTransformImplementation.get(); }
inline void setRigTransformImplementation(RigTransform* rig) { _rigTransformImplementation = rig; }
inline const RigTransform* getRigTransformImplementation() const { return _rigTransformImplementation.get(); }
void update();
void buildVertexInfluenceSet() { _rigTransformImplementation->prepareData(*this); }
const osg::Matrix& getMatrixFromSkeletonToGeometry() const;
const osg::Matrix& getInvMatrixFromSkeletonToGeometry() const;
inline osg::Geometry* getSourceGeometry() { return _geometry.get(); }
inline const osg::Geometry* getSourceGeometry() const { return _geometry.get(); }
inline void setSourceGeometry(osg::Geometry* geometry) { _geometry = geometry; }
void copyFrom(osg::Geometry& from);
struct FindNearestParentSkeleton : public osg::NodeVisitor
{
osg::ref_ptr<Skeleton> _root;
FindNearestParentSkeleton() : osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_PARENTS) {}
void apply(osg::Transform& node)
{
if (_root.valid())
return;
_root = dynamic_cast<osgAnimation::Skeleton*>(&node);
traverse(node);
}
};
protected:
osg::ref_ptr<osg::Geometry> _geometry;
osg::ref_ptr<RigTransform> _rigTransformImplementation;
osg::ref_ptr<VertexInfluenceMap> _vertexInfluenceMap;
osg::Matrix _matrixFromSkeletonToGeometry;
osg::Matrix _invMatrixFromSkeletonToGeometry;
osg::observer_ptr<Skeleton> _root;
bool _needToComputeMatrix;
};
struct UpdateRigGeometry : public osg::Drawable::UpdateCallback
{
UpdateRigGeometry() {}
UpdateRigGeometry(const UpdateRigGeometry& org, const osg::CopyOp& copyop):
osg::Object(org, copyop),
osg::Callback(org, copyop),
osg::DrawableUpdateCallback(org, copyop) {}
META_Object(osgAnimation, UpdateRigGeometry);
virtual void update(osg::NodeVisitor* nv, osg::Drawable* drw)
{
RigGeometry* geom = dynamic_cast<RigGeometry*>(drw);
if(!geom)
return;
if(!geom->getSkeleton() && !geom->getParents().empty())
{
RigGeometry::FindNearestParentSkeleton finder;
if(geom->getParents().size() > 1)
osg::notify(osg::WARN) << "A RigGeometry should not have multi parent ( " << geom->getName() << " )" << std::endl;
geom->getParents()[0]->accept(finder);
if(!finder._root.valid())
{
osg::notify(osg::WARN) << "A RigGeometry did not find a parent skeleton for RigGeometry ( " << geom->getName() << " )" << std::endl;
return;
}
geom->getRigTransformImplementation()->prepareData(*geom);
geom->setSkeleton(finder._root.get());
}
if(!geom->getSkeleton())
return;
if(geom->getNeedToComputeMatrix())
geom->computeMatrixFromRootSkeleton();
if(geom->getSourceGeometry())
{
osg::Drawable::UpdateCallback * up = dynamic_cast<osg::Drawable::UpdateCallback*>(geom->getSourceGeometry()->getUpdateCallback());
if(up)
up->update(nv, geom->getSourceGeometry());
}
geom->update();
}
};
}
#endif
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