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Ensure RigGeometry child geometries have sensible bounds without actually computing them.

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This commit is contained in:
AnyOldName3 2018-08-08 23:24:57 +01:00
parent 586ac2d12d
commit 6286f5a1d4
2 changed files with 24 additions and 0 deletions
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10
components/sceneutil/riggeometry.cpp
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@ -41,6 +41,8 @@ void RigGeometry::setSourceGeometry(osg::ref_ptr<osg::Geometry> sourceGeometry)
to.setSupportsDisplayList(false);
to.setUseVertexBufferObjects(true);
to.setCullingActive(false); // make sure to disable culling since that's handled by this class
to.setComputeBoundingBoxCallback(new CopyBoundingBoxCallback());
to.setComputeBoundingSphereCallback(new CopyBoundingSphereCallback());
// vertices and normals are modified every frame, so we need to deep copy them.
// assign a dedicated VBO to make sure that modifications don't interfere with source geometry's VBO.
@ -273,6 +275,14 @@ void RigGeometry::updateBounds(osg::NodeVisitor *nv)
_boundingSphereComputed = true;
for (unsigned int i=0; i<getNumParents(); ++i)
getParent(i)->dirtyBound();
for (unsigned int i = 0; i < 2; ++i)
{
osg::Geometry& geom = *mGeometry[i];
static_cast<CopyBoundingBoxCallback*>(geom.getComputeBoundingBoxCallback())->boundingBox = _boundingBox;
static_cast<CopyBoundingSphereCallback*>(geom.getComputeBoundingSphereCallback())->boundingSphere = _boundingSphere;
geom.dirtyBound();
}
}
}

14
components/sceneutil/riggeometry.hpp
View File

@ -51,6 +51,20 @@ namespace SceneUtil
virtual bool supports(const osg::PrimitiveFunctor&) const { return true; }
virtual void accept(osg::PrimitiveFunctor&) const;
struct CopyBoundingBoxCallback : osg::Drawable::ComputeBoundingBoxCallback
{
osg::BoundingBox boundingBox;
virtual osg::BoundingBox computeBound(const osg::Drawable&) const override { return boundingBox; }
};
struct CopyBoundingSphereCallback : osg::Node::ComputeBoundingSphereCallback
{
osg::BoundingSphere boundingSphere;
virtual osg::BoundingSphere computeBound(const osg::Node&) const override { return boundingSphere; }
};
private:
void cull(osg::NodeVisitor* nv);
void updateBounds(osg::NodeVisitor* nv);