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Added handling of CameraNode into PickVisitor in src/osgProducer/Viewer.cpp. This

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is unlikely to be the final solution, but does at least fix part of the problem of handling
picking HUD's underneath CameraNodes.
This commit is contained in:
Robert Osfield
2005-11-02 15:23:54 +00:00
parent 7e858b15f1
commit b0df518d11
2 changed files with 33 additions and 19 deletions
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24
src/osgProducer/Viewer.cpp
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@@ -88,17 +88,16 @@ public:
_nodeMaskOverride = mask; }
virtual void apply(osg::Projection& pr)
{ // stack the intersect rays, transform to new projection, traverse
// Assumes that the Projection is an absolute projection
void handleProjectionMatrix(const osg::Matrixd& matrix, osg::Group& node)
{
osg::Matrixd mt;
mt.invert(pr.getMatrix());
mt.invert(matrix);
osg::Vec3 npt=osg::Vec3(xp,yp,-1.0f) * mt, farpt=osg::Vec3(xp,yp,1.0f) * mt;
// traversing the nodes children, using the projection direction
for (unsigned int i=0; i<pr.getNumChildren(); i++)
for (unsigned int i=0; i<node.getNumChildren(); i++)
{
osg::Node *nodech=pr.getChild(i);
osg::Node *nodech=node.getChild(i);
osgUtil::IntersectVisitor::HitList &hli=_piv.getIntersections(nodech,npt, farpt);
for(osgUtil::IntersectVisitor::HitList::iterator hitr=hli.begin();
hitr!=hli.end();
@@ -111,6 +110,19 @@ public:
}
}
virtual void apply(osg::Projection& pr)
{
handleProjectionMatrix(pr.getMatrix(), pr);
}
virtual void apply(osg::CameraNode& camera)
{
// just handling the projection matrix here, this leaves the question about non identity view matrices....
// we need to think about the effects of this. Robert Osfield, Novemenber 2005.
handleProjectionMatrix(camera.getProjectionMatrix(), camera);
}
osgUtil::IntersectVisitor::HitList& getHits(osg::Node *node, const osg::Vec3& near_point, const osg::Vec3& far_point)
{
// High level get intersection with sceneview using a ray from x,y on the screen