# CullTraverserData

from pandac.PandaModules import CullTraverserData

Class : CullTraverserData
Description : This collects together the pieces of data that are accumulated for each node while walking the scene graph during the cull traversal.
Having this as a separate object simplifies the parameter list to CullTraverser::r_traverse(), as well as to other functions like PandaNode::cull_callback(). It also makes it easier to add cull parameters, and provides a place to abstract out some of the cull behavior (like view-frustum culling).

## Inheritance:

CullTraverserData:

## Methods of CullTraverserData:

applyTransformAndState
getModelviewTransform
getNetTransform
isInView
isThisNodeHidden
node

applyTransformAndState void CullTraverserData::apply_transform_and_state(CullTraverser *trav); Description: Applies the transform and state from the current node onto the current data. This also evaluates billboards, etc. Description: Applies the indicated transform and state changes (e.g. as extracted from a node) onto the current data. This also evaluates billboards, etc.

getModelviewTransform ConstPointerTo< TransformState > CullTraverserData::get_modelview_transform(CullTraverser const *trav) const; Description: Returns the modelview transform: the relative transform from the camera to the model.

getNetTransform TransformState const *CullTraverserData::get_net_transform(CullTraverser const *trav) const; Description: Returns the net transform: the relative transform from root of the scene graph to the current node.

isInView bool CullTraverserData::is_in_view(BitMask< unsigned int, 32 > const &camera_mask); Description: Returns true if the current node is within the view frustum, false otherwise. If the node's bounding volume falls completely within the view frustum, this will also reset the view frustum pointer, saving some work for future nodes.

isThisNodeHidden bool CullTraverserData::is_this_node_hidden(CullTraverser const *trav) const; Description: Returns true if this particular node is hidden, even though we might be traversing past this node to find a child node that has had show_through() called for it. If this returns true, the node should not be rendered.

node PandaNode *CullTraverserData::node(void) const; Description: Returns the node traversed to so far.