FGFS-4.1/OpenSceneGraph
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dded osg::ClipNode class for managing OpenGL clipping planes, and osgclip demo.

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This commit is contained in:
Robert Osfield
2002-05-02 00:14:40 +00:00
parent 3c25b7ab7c
commit ae8076f83b
20 changed files with 610 additions and 35 deletions
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27
src/osgUtil/CullVisitor.cpp
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@@ -4,6 +4,7 @@
#include <osg/LOD>
#include <osg/Billboard>
#include <osg/LightSource>
#include <osg/ClipNode>
#include <osg/Notify>
#include <osg/TexEnv>
#include <osg/AlphaFunc>
@@ -60,6 +61,7 @@ class PrintVisitor : public NodeVisitor
virtual void apply(Geode& node) { apply((Node&)node); }
virtual void apply(Billboard& node) { apply((Geode&)node); }
virtual void apply(LightSource& node) { apply((Node&)node); }
virtual void apply(ClipNode& node) { apply((Node&)node); }
virtual void apply(Group& node) { apply((Node&)node); }
virtual void apply(Transform& node) { apply((Group&)node); }
@@ -524,13 +526,34 @@ void CullVisitor::apply(LightSource& node)
Light* light = node.getLight();
if (light)
{
addLight(light,&matrix);
addPositionedAttribute(&matrix,light);
}
// pop the node's state off the geostate stack.
if (node_state) popStateSet();
}
void CullVisitor::apply(ClipNode& node)
{
// push the node's state.
StateSet* node_state = node.getStateSet();
if (node_state) pushStateSet(node_state);
Matrix& matrix = getModelViewMatrix();
const ClipNode::ClipPlaneList& planes = node.getClipPlaneList();
for(ClipNode::ClipPlaneList::const_iterator itr=planes.begin();
itr!=planes.end();
++itr)
{
addPositionedAttribute(&matrix,itr->get());
}
handle_cull_callbacks_and_traverse(node);
// pop the node's state off the geostate stack.
if (node_state) popStateSet();
}
void CullVisitor::apply(Group& node)
{
@@ -824,7 +847,7 @@ ImpostorSprite* CullVisitor::createImpostorSprite(Impostor& node)
if (!bs.isValid())
{
std::cout << "bb invalid"<<&node<<std::endl;
osg::notify(osg::WARN) << "bb invalid"<<&node<<std::endl;
return NULL;
}