source: GTP/trunk/Lib/Vis/OnlineCullingCHC/OGRE/src/OgreSceneNodeHierarchyInterface.cpp @ 2455

#include <OgreIteratorWrappers.h>
#include <OgreCamera.h>
#include <OgreSceneNode.h>
#include <OgreEntity.h>
#include <OgreSubEntity.h>
#include <OgreLogManager.h>
#include "OgreSceneNodeHierarchyInterface.h"
#include "OgrePlatformOcclusionQuery.h"


namespace Ogre {

//-----------------------------------------------------------------------
SceneNodeHierarchyInterface::SceneNodeHierarchyInterface(SceneManager *sm, RenderSystem *rsys): 
PlatformHierarchyInterface(sm, rsys)
{               
}
//-----------------------------------------------------------------------
void SceneNodeHierarchyInterface::TraverseNode(GtpVisibility::HierarchyNode *node)
{
        ++ mNumTraversedNodes;
        
        SceneNode *sceneNode = static_cast<SceneNode *>(node);

        if (HasGeometry(node))
        {
                RenderNode(node);
        }

        // internal node: add children to priority queue for further processing
        Node::ChildNodeIterator it = sceneNode->getChildIterator();
                                
        while (it.hasMoreElements())                    
        { 
                mDistanceQueue->push(it.getNext());
        }
}
//-----------------------------------------------------------------------
void SceneNodeHierarchyInterface::RenderNode(GtpVisibility::HierarchyNode *node)
{
#ifdef GTP_VISIBILITY_MODIFIED_OGRE
        SceneNode *sceneNode = static_cast<SceneNode *>(node);

        if (sceneNode->lastRendered() != sceneNode->lastVisited())
        {
                sceneNode->setLastRendered(sceneNode->lastVisited());
                mVisibleNodes.push_back(node);

                mSceneManager->_renderSceneNode(mCamera, sceneNode, mLeavePassesInQueue);
        }
#endif
}
//-----------------------------------------------------------------------
bool SceneNodeHierarchyInterface::IsLeaf(GtpVisibility::HierarchyNode *node) const
{
        return (static_cast<SceneNode *>(node)->numChildren() == 0);
}
//-----------------------------------------------------------------------
bool SceneNodeHierarchyInterface::HasGeometry(GtpVisibility::HierarchyNode *node) const
{
        return static_cast<SceneNode *>(node)->numAttachedObjects() > 0;
}
//-----------------------------------------------------------------------
void SceneNodeHierarchyInterface::PullUpVisibility(GtpVisibility::HierarchyNode *node) const
{
#ifdef GTP_VISIBILITY_MODIFIED_OGRE
        SceneNode *sceneNode = static_cast<SceneNode *>(node);

        while (sceneNode && !sceneNode->isNodeVisible())
        {
                sceneNode->setNodeVisible(true);
                sceneNode = sceneNode->getParentSceneNode();
        }
#endif
}
//-----------------------------------------------------------------------
float SceneNodeHierarchyInterface::GetSquaredDistance(GtpVisibility::HierarchyNode *node) const
{
        return static_cast<SceneNode *>(node)->getSquaredViewDepth(mCamera);
}
//-----------------------------------------------------------------------
void SceneNodeHierarchyInterface::SetNodeVisible(GtpVisibility::HierarchyNode *node, 
                                                                                                 const bool visible) const
{
#ifdef GTP_VISIBILITY_MODIFIED_OGRE
        SceneNode *sceneNode = static_cast<SceneNode *>(node);
        sceneNode->setNodeVisible(visible);
#endif
}
//-----------------------------------------------------------------------
void SceneNodeHierarchyInterface::SetLastVisited(GtpVisibility::HierarchyNode *node, 
                                                                                                 const unsigned int frameId) const
{
#ifdef GTP_VISIBILITY_MODIFIED_OGRE
        SceneNode *sceneNode = static_cast<SceneNode *>(node);
        sceneNode->setLastVisited(frameId);
#endif
}
//-----------------------------------------------------------------------
bool SceneNodeHierarchyInterface::IsNodeVisible(GtpVisibility::HierarchyNode *node) const
{
#ifdef GTP_VISIBILITY_MODIFIED_OGRE
        SceneNode *sceneNode = static_cast<SceneNode *>(node);
        return sceneNode->isNodeVisible();
#else
        return true;
#endif
}
//-----------------------------------------------------------------------
unsigned int SceneNodeHierarchyInterface::LastVisited(GtpVisibility::HierarchyNode *node) const
{
#ifdef GTP_VISIBILITY_MODIFIED_OGRE
        SceneNode *sceneNode = static_cast<SceneNode *>(node);
        return sceneNode->lastVisited();
#else
        return 0;
#endif
}
//-----------------------------------------------------------------------
AxisAlignedBox *SceneNodeHierarchyInterface::GetBoundingBox(GtpVisibility::HierarchyNode *node)
{
        // only create renderable bounding box for new node
        if (node != mOldNode)
        {
                mOldNode = node;
                mBox = static_cast<SceneNode *>(node)->_getWorldAABB();
        }

        return &mBox;
}
//-----------------------------------------------------------------------
void SceneNodeHierarchyInterface::VisualizeCulledNode(GtpVisibility::HierarchyNode *node, 
                                                                                                          GtpVisibility::CullingType type) const
{
        // TODO
}
//-----------------------------------------------------------------------
void SceneNodeHierarchyInterface::GetNodeGeometryList(GtpVisibility::HierarchyNode *node,       
                                                                                                          GeometryVector *geometryList, 
                                                                                                          bool includeChildren)
{
        SceneNode::ObjectIterator objIt = 
                static_cast<SceneNode *>(node)->getAttachedObjectIterator();

        while (objIt.hasMoreElements())
    {
                MovableObject *movable = objIt.getNext();
                
                // we are interested only in the entities, i.e., instances of geometry
                if (movable->getMovableType() == "Entity")
                {
                        Entity *ent = static_cast<Entity *>(movable);
                        geometryList->push_back(ent);
                }
    }
}

} // namespace Ogre