void CURRENT_CLASS::apply(osg::Geode &geode)
{
// Contained drawables will only be individually considered if we are
// allowed to continue traversing.
if(shouldContinueTraversal(geode))
{
osg::Drawable *drawable;
double zNear, zFar;
// Handle each drawable in this geode
for(unsigned int i = 0; i < geode.getNumDrawables(); ++i)
{
drawable = geode.getDrawable(i);
const osg::BoundingBox &bb = drawable->getBound();
if(bb.valid())
{
bool containsTest = _localFrusta.back().contains(bb);
// Make sure drawable will be visible in the scene
if(!containsTest)
continue;
// Compute near/far distances for current drawable
zNear = distanceDA(bb.corner(_bbCorners.back().first),
_viewMatrices.back());
zFar = distanceDA(bb.corner(_bbCorners.back().second),
_viewMatrices.back());
if(zNear > zFar)
std::swap(zNear,zFar);
pushDistancePair(zNear,zFar);
}
}
}
}
void CURRENT_CLASS::apply(osg::Transform &transform)
{
if(shouldContinueTraversal(transform))
{
// Compute transform for current node
osg::Matrix currMatrix = _viewMatrices.back();
bool pushMatrix = transform.computeLocalToWorldMatrix(currMatrix,this);
if(pushMatrix)
{
// Store the new modelview matrix and view frustum
_viewMatrices.push_back(currMatrix);
pushLocalFrustum();
}
++_currentDepth;
traverse(transform);
--_currentDepth;
if(pushMatrix)
{
// Restore the old modelview matrix and view frustum
_localFrusta.pop_back();
_bbCorners.pop_back();
_viewMatrices.pop_back();
}
}
}
void CURRENT_CLASS::apply(osg::Node &node)
{
if(shouldContinueTraversal(node))
{
// Traverse this node
++_currentDepth;
traverse(node);
--_currentDepth;
}
}
void DistanceAccumulator::apply(osg::Node &node)
{
if(shouldContinueTraversal(node))
{
// Traverse this node
++_currentDepth;
traverse(node);
--_currentDepth;
}
}
void CURRENT_CLASS::apply(osg::Projection &proj)
{
if(shouldContinueTraversal(proj))
{
// Push the new projection matrix view frustum
_projectionMatrices.push_back(proj.getMatrix());
pushLocalFrustum();
// Traverse the group
++_currentDepth;
traverse(proj);
--_currentDepth;
// Reload original matrix and frustum
_localFrusta.pop_back();
_bbCorners.pop_back();
_projectionMatrices.pop_back();
}
}
