# CollisionNode

from pandac.PandaModules import CollisionNode

Class : CollisionNode
Description : A node in the scene graph that can hold any number of CollisionSolids. This may either represent a bit of static geometry in the scene that things will collide with, or an animated object twirling around in the world and running into things.

## Inheritance:

CollisionNode: PandaNode
PandaNode: TypedWritable Namable LinkedListNode ReferenceCount
TypedWritable: TypedObject
TypedObject: MemoryBase
MemoryBase:
Namable:
LinkedListNode:
ReferenceCount: MemoryBase

## Methods of CollisionNode:

CollisionNode (Constructor)
addSolid
clearSolids
getClassType
getColliderSort
getDefaultCollideMask
getFromCollideMask
getIntoCollideMask
getNumSolids
getSolid
modifySolid
removeSolid
setCollideMask
setColliderSort
setFromCollideMask
setIntoCollideMask
setSolid

## Methods of PandaNode:

PandaNode (Constructor)
addChild
addStashed
adjustDrawMask
asLight
clearAttrib
clearBounds
clearEffect
clearEffects
clearPythonTag
clearState
clearTag
clearTransform
clearUnexpectedChange
combineWith
compareTags
copyAllProperties
copyChildren
copySubgraph
copyTags
countNumDescendants
findChild
findParent
findStashed
getAllCameraMask
getAttrib
getBounds
getBoundsType
getChild
getChildSort
getClassType
getDrawControlMask
getDrawShowMask
getEffect
getEffects
getFancyBits
getInternalBounds
getInternalVertices
getIntoCollideMask
getLegalCollideMask
getNestedVertices
getNetCollideMask
getNetDrawControlMask
getNetDrawShowMask
getNumChildren
getNumParents
getNumStashed
getOffClipPlanes
getOverallBit
getParent
getPrevTransform
getPythonTag
getStashed
getStashedSort
getState
getTag
getTransform
getUnexpectedChange
hasAttrib
hasDirtyPrevTransform
hasEffect
hasPythonTag
hasTag
hasTags
isAmbientLight
isBoundsStale
isFinal
isGeomNode
isLodNode
isOverallHidden
isSceneRoot
isUnderSceneRoot
listTags
ls
markBoundsStale
markInternalBoundsStale
output
prepareScene
removeAllChildren
removeChild
removeStashed
replaceChild
replaceNode
resetAllPrevTransform
resetPrevTransform
setAttrib
setBound
setBounds
setBoundsType
setEffect
setEffects
setFinal
setIntoCollideMask
setOverallHidden
setPrevTransform
setPythonTag
setState
setTag
setTransform
setUnexpectedChange
stashChild
stealChildren
unstashChild
write

## Methods of TypedWritable:

getClassType

## Methods of TypedObject:

getClassType
getType
getTypeIndex
isExactType
isOfType

## Methods of Namable:

Namable (Constructor)
clearName
getClassType
getName
hasName
operator =
output
setName

## Methods of ReferenceCount:

getClassType
getRefCount
ref
testRefCountIntegrity
testRefCountNonzero
unref

## Constants in PandaNode:

UCParents | (UnexpectedChange)
UCChildren | (UnexpectedChange)
UCTransform | (UnexpectedChange)
UCState | (UnexpectedChange)
UCDrawMask | (UnexpectedChange)
FBTransform | (FancyBits)
FBState | (FancyBits)
FBEffects | (FancyBits)
FBTag | (FancyBits)
FBDrawMask | (FancyBits)
FBCullCallback | (FancyBits)

CollisionNode CollisionNode::CollisionNode(string const &name); Description:

addSolid int CollisionNode::add_solid(CollisionSolid const *solid); Description: Adds the indicated solid to the node. Returns the index of the new solid within the node's list of solids.

clearSolids void CollisionNode::clear_solids(void); Description: Removes all solids from the node.

getClassType static TypeHandle CollisionNode::get_class_type(void); Undocumented function.

getColliderSort int CollisionNode::get_collider_sort(void) const; Description: Returns the collider_sort value that has been set for this particular node. See set_collider_sort().

getDefaultCollideMask static BitMask< unsigned int, 32 > CollisionNode::get_default_collide_mask(void); Description: Returns the default into_collide_mask assigned to new CollisionNodes.

getFromCollideMask BitMask< unsigned int, 32 > CollisionNode::get_from_collide_mask(void) const; Description: Returns the current "from" CollideMask. In order for a collision to be detected from this object into another object, the intersection of this object's "from" mask and the other object's "into" mask must be nonzero.

getIntoCollideMask BitMask< unsigned int, 32 > CollisionNode::get_into_collide_mask(void) const; Description: Returns the current "into" CollideMask. In order for a collision to be detected from another object into this object, the intersection of the other object's "from" mask and this object's "into" mask must be nonzero.

getNumSolids int CollisionNode::get_num_solids(void) const; Description:

getSolid ConstPointerTo< CollisionSolid > CollisionNode::get_solid(int n) const; Description:

modifySolid PointerTo< CollisionSolid > CollisionNode::modify_solid(int n); Description:

removeSolid void CollisionNode::remove_solid(int n); Description: Removes the solid with the indicated index. This will shift all subsequent indices down by one.

setCollideMask void CollisionNode::set_collide_mask(BitMask< unsigned int, 32 > mask); Description: Simultaneously sets both the "from" and "into" CollideMask values to the same thing.

setColliderSort void CollisionNode::set_collider_sort(int sort); Description: Sets a particular collider_sort value on this node. This controls the order in which colliders (that is, "from nodes") are grouped together for the collision traversal. If there are 32 or fewer colliders added to any particular CollisionTraverser, then this value has no meaning. It is only useful if there are many colliders, which may force the CollisionTraverser to make multiple passes through the data; in that case, it may be a useful optimization to group colliders that have similar bounding volumes together (by giving them similar sort values).

setFromCollideMask void CollisionNode::set_from_collide_mask(BitMask< unsigned int, 32 > mask); Description: Sets the "from" CollideMask. In order for a collision to be detected from this object into another object, the intersection of this object's "from" mask and the other object's "into" mask must be nonzero.

setIntoCollideMask void CollisionNode::set_into_collide_mask(BitMask< unsigned int, 32 > mask); Description: Sets the "into" CollideMask. In order for a collision to be detected from another object into this object, the intersection of the other object's "from" mask and this object's "into" mask must be nonzero.

setSolid void CollisionNode::set_solid(int n, CollisionSolid *solid); Description: Replaces the solid with the indicated index.

PandaNode PandaNode::PandaNode(string const &name); There are two different interfaces here for making and breaking parent-child connections: the fundamental PandaNode interface, via add_child() and remove_child() (and related functions), and the NodePath support interface, via attach(), detach(), and reparent(). They both do essentially the same thing, but with slightly different inputs. The PandaNode interfaces try to guess which NodePaths should be updated as a result of the scene graph change, while the NodePath interfaces already know. The NodePath support interface functions are strictly called from within the NodePath class, and are used to implement NodePath::reparent_to() and NodePath::remove_node(), etc. The fundamental interface, on the other hand, is intended to be called directly by the user. The fundamental interface has a slightly lower overhead because it does not need to create a NodePathComponent chain where one does not already exist; however, the NodePath support interface is more useful when the NodePath already does exist, because it ensures that the particular NodePath calling it is kept appropriately up-to-date. Description: Description: Do not call the copy constructor directly; instead, use make_copy() or copy_subgraph() to make a copy of a node.

addChild void PandaNode::add_child(PandaNode *child_node, int sort = (0), Thread *current_thread = ((get_current_thread()))); Description: Adds a new child to the node. The child is added in the relative position indicated by sort; if all children have the same sort index, the child is added at the end. If the same child is added to a node more than once, the previous instance is first removed.

addStashed void PandaNode::add_stashed(PandaNode *child_node, int sort = (0), Thread *current_thread = ((get_current_thread()))); Description: Adds a new child to the node, directly as a stashed child. The child is not added in the normal sense, but will be revealed if unstash_child() is called on it later. If the same child is added to a node more than once, the previous instance is first removed. This can only be called from the top pipeline stage (i.e. from App).

adjustDrawMask void PandaNode::adjust_draw_mask(BitMask< unsigned int, 32 > show_mask, BitMask< unsigned int, 32 > hide_mask, BitMask< unsigned int, 32 > clear_mask); Description: Adjusts the hide/show bits of this particular node. These three parameters can be used to adjust the _draw_control_mask and _draw_show_mask independently, which work together to provide per-camera visibility for the node and its descendents. _draw_control_mask indicates the bits in _draw_show_mask that are significant. Each different bit corresponds to a different camera (and these bits are assigned via Camera::set_camera_mask()). Where _draw_control_mask has a 1 bit, a 1 bit in _draw_show_mask indicates the node is visible to that camera, and a 0 bit indicates the node is hidden to that camera. Where _draw_control_mask is 0, the node is hidden only if a parent node is hidden. The meaning of the three parameters is as follows: * Wherever show_mask is 1, _draw_show_mask and _draw_control_mask will be set 1. Thus, show_mask indicates the set of cameras to which the node should be shown. * Wherever hide_mask is 1, _draw_show_mask will be set 0 and _draw_control_mask will be set 1. Thus, hide_mask indicates the set of cameras from which the node should be hidden. * Wherever clear_mask is 1, _draw_control_mask will be set 0. Thus, clear_mask indicates the set of cameras from which the hidden state should be inherited from a parent.

asLight virtual Light *PandaNode::as_light(void); Description: Cross-casts the node to a Light pointer, if it is one of the four kinds of Light nodes, or returns NULL if it is not.

clearAttrib void PandaNode::clear_attrib(TypeHandle type); Description: Removes the render attribute of the given type from this node. This node, and the subgraph below, will now inherit the indicated render attribute from the nodes above this one.

clearBounds void PandaNode::clear_bounds(void); Description: Reverses the effect of a previous call to set_bounds(), and allows the node's bounding volume to be automatically computed once more based on the contents of the node.

clearEffect void PandaNode::clear_effect(TypeHandle type); Description: Removes the render effect of the given type from this node.

clearEffects void PandaNode::clear_effects(Thread *current_thread = ((get_current_thread()))); Description: Resets this node to have no render effects.

clearPythonTag void PandaNode::clear_python_tag(string const &key); Description: Removes the Python object defined for this key on this particular node. After a call to clear_python_tag(), has_python_tag() will return false for the indicated key.

clearState void PandaNode::clear_state(Thread *current_thread = ((get_current_thread()))); Description: Resets this node to leave the render state alone. Nodes at this level and below will once again inherit their render state unchanged from the nodes above this level.

clearTag void PandaNode::clear_tag(string const &key, Thread *current_thread = ((get_current_thread()))); Description: Removes the value defined for this key on this particular node. After a call to clear_tag(), has_tag() will return false for the indicated key.

clearTransform void PandaNode::clear_transform(Thread *current_thread = ((get_current_thread()))); Description: Resets the transform on this node to the identity transform.

clearUnexpectedChange void PandaNode::clear_unexpected_change(unsigned int flags); Description: Sets one or more of the PandaNode::UnexpectedChange bits off, indicating that the corresponding property may once again change on this node. See set_unexpected_change(). The input parameter is the union of bits that are to be cleared. Since this is a developer debugging tool only, this function does nothing in a production (NDEBUG) build.

combineWith virtual PandaNode *PandaNode::combine_with(PandaNode *other); published so that characters can be combined. Description: Collapses this PandaNode with the other PandaNode, if possible, and returns a pointer to the combined PandaNode, or NULL if the two PandaNodes cannot safely be combined. The return value may be this, other, or a new PandaNode altogether. This function is called from GraphReducer::flatten(), and need not deal with children; its job is just to decide whether to collapse the two PandaNodes and what the collapsed PandaNode should look like.

compareTags int PandaNode::compare_tags(PandaNode const *other) const; Description: Returns a number less than 0, 0, or greater than 0, to indicate the similarity of tags between this node and the other one. If this returns 0, the tags are identical. If it returns other than 0, then the tags are different; and the nodes may be sorted into a consistent (but arbitrary) ordering based on this number.

copyAllProperties void PandaNode::copy_all_properties(PandaNode *other); Description: Copies the TransformState, RenderState, RenderEffects, tags, Python tags, and the show/hide state from the other node onto this one. Typically this is used to prepare a node to replace another node in the scene graph (also see replace_node()).

copyChildren void PandaNode::copy_children(PandaNode *other, Thread *current_thread = ((get_current_thread()))); Description: Makes another instance of all the children of the other node, copying them to this node.

copySubgraph PointerTo< PandaNode > PandaNode::copy_subgraph(Thread *current_thread = ((get_current_thread()))) const; Description: Allocates and returns a complete copy of this PandaNode and the entire scene graph rooted at this PandaNode. Some data may still be shared from the original (e.g. vertex index tables), but nothing that will impede normal use of the PandaNode.

copyTags void PandaNode::copy_tags(PandaNode *other); HAVE_PYTHON Description: Copies all of the tags stored on the other node onto this node. If a particular tag exists on both nodes, the contents of this node's value is replaced by that of the other.

countNumDescendants int PandaNode::count_num_descendants(void) const; Description: Returns the number of nodes at and below this level.

findChild int PandaNode::find_child(PandaNode *node, Thread *current_thread = ((get_current_thread()))) const; Description: Returns the index of the indicated child node, if it is a child, or -1 if it is not.

findParent int PandaNode::find_parent(PandaNode *node, Thread *current_thread = ((get_current_thread()))) const; Description: Returns the index of the indicated parent node, if it is a parent, or -1 if it is not.

findStashed int PandaNode::find_stashed(PandaNode *node, Thread *current_thread = ((get_current_thread()))) const; Description: Returns the index of the indicated stashed node, if it is a stashed child, or -1 if it is not.

getAllCameraMask static BitMask< unsigned int, 32 > PandaNode::get_all_camera_mask(void); Description: Returns a DrawMask that is appropriate for rendering to all cameras.

getAttrib RenderAttrib const *PandaNode::get_attrib(TypeHandle type) const; Description: Returns the render attribute of the indicated type, if it is defined on the node, or NULL if it is not. This checks only what is set on this particular node level, and has nothing to do with what render attributes may be inherited from parent nodes.

getBounds ConstPointerTo< BoundingVolume > PandaNode::get_bounds(Thread *current_thread = ((get_current_thread()))) const; Description: Returns the external bounding volume of this node: a bounding volume that contains the user bounding volume, the internal bounding volume, and all of the children's bounding volumes. Description: This flavor of get_bounds() return the external bounding volume, and also fills in seq with the bounding volume's current sequence number. When this sequence number changes, it indicates that the bounding volume might have changed, e.g. because some nested child's bounding volume has changed. Although this might occasionally increment without changing the bounding volume, the bounding volume will never change without incrementing this counter, so as long as this counter remains unchanged you can be confident the bounding volume is also unchanged.

getBoundsType BoundingVolume::BoundsType PandaNode::get_bounds_type(void) const; A node has three bounding volumes: an "external" bounding volume that represents the node and all of its children, an "internal" bounding volume which represents only the node itself (and is usually empty, unless a specific node type sets it otherwise), and a "user" bounding volume which is specified by the user. We define set_bounds() and get_bounds() functions so that set_bounds() sets the user bounding volume, while get_bounds() returns the external bounding volume. Although it might seem strange and confusing to do this, this is actually the natural way the user thinks about nodes and bounding volumes. Description: Returns the bounding volume type set with set_bounds_type().

getChild PandaNode *PandaNode::get_child(int n, Thread *current_thread = ((get_current_thread()))) const; Description: Returns the nth child node of this node. See get_num_children(). Also see get_children(), if your intention is to iterate through the complete list of children; get_children() is preferable in this case.

getChildSort int PandaNode::get_child_sort(int n, Thread *current_thread = ((get_current_thread()))) const; Description: Returns the sort index of the nth child node of this node (that is, the number that was passed to add_child()). See get_num_children().

getClassType static TypeHandle PandaNode::get_class_type(void); Undocumented function.

getDrawControlMask BitMask< unsigned int, 32 > PandaNode::get_draw_control_mask(void) const; Description: Returns the set of bits in draw_show_mask that are considered meaningful. See adjust_draw_mask().

getDrawShowMask BitMask< unsigned int, 32 > PandaNode::get_draw_show_mask(void) const; Description: Returns the hide/show bits of this particular node. See adjust_draw_mask().

getEffect RenderEffect const *PandaNode::get_effect(TypeHandle type) const; Description: Returns the render effect of the indicated type, if it is defined on the node, or NULL if it is not.

getEffects RenderEffects const *PandaNode::get_effects(Thread *current_thread = ((get_current_thread()))) const; Description: Returns the complete RenderEffects that will be applied to this node.

getFancyBits int PandaNode::get_fancy_bits(Thread *current_thread = ((get_current_thread()))) const; Description: Returns the union of all of the enum FancyBits values corresponding to the various "fancy" attributes that are set on the node. If this returns 0, the node has nothing interesting about it. This is intended to speed traversal by quickly skipping past nodes that don't particularly affect the render state.

getInternalBounds ConstPointerTo< BoundingVolume > PandaNode::get_internal_bounds(Thread *current_thread = ((get_current_thread()))) const; Description: Returns the node's internal bounding volume. This is the bounding volume around the node alone, without including children. If the user has called set_bounds(), it will be the specified bounding volume. Description: Returns the node's internal bounding volume. This is the bounding volume around the node alone, without including children.

getInternalVertices int PandaNode::get_internal_vertices(Thread *current_thread = ((get_current_thread()))) const; Description: Returns the total number of vertices that will be rendered by this particular node alone, not accounting for its children. This may not include all vertices for certain dynamic effects.

getIntoCollideMask BitMask< unsigned int, 32 > PandaNode::get_into_collide_mask(void) const; Description: Returns the "into" collide mask for this node.

getLegalCollideMask virtual BitMask< unsigned int, 32 > PandaNode::get_legal_collide_mask(void) const; Description: Returns the subset of CollideMask bits that may be set for this particular type of PandaNode. For most nodes, this is 0; it doesn't make sense to set a CollideMask for most kinds of nodes. For nodes that can be collided with, such as GeomNode and CollisionNode, this returns all bits on.

getNestedVertices int PandaNode::get_nested_vertices(Thread *current_thread = ((get_current_thread()))) const; Description: Returns the total number of vertices that will be rendered by this node and all of its descendents. This is not necessarily an accurate count of vertices that will actually be rendered, since this will include all vertices of all LOD's, and it will also include hidden nodes. It may also omit or only approximate certain kinds of dynamic geometry. However, it will not include stashed nodes.

getNetCollideMask BitMask< unsigned int, 32 > PandaNode::get_net_collide_mask(Thread *current_thread = ((get_current_thread()))) const; Description: Returns the union of all into_collide_mask() values set at CollisionNodes at this level and below.

getNetDrawControlMask BitMask< unsigned int, 32 > PandaNode::get_net_draw_control_mask(void) const; Description: Returns the set of bits in get_net_draw_show_mask() that have been explicitly set via adjust_draw_mask(), rather than implicitly inherited. A 1 bit in any position of this mask indicates that (a) this node has renderable children, and (b) some child of this node has made an explicit hide() or show_through() call for the corresponding bit.

getNetDrawShowMask BitMask< unsigned int, 32 > PandaNode::get_net_draw_show_mask(void) const; Description: Returns the union of all draw_show_mask values--of renderable nodes only--at this level and below. If any bit in this mask is 0, there is no reason to traverse below this node for a camera with the corresponding camera_mask. The bits in this mask that do not correspond to a 1 bit in the net_draw_control_mask are meaningless (and will be set to 1). For bits that *do* correspond to a 1 bit in the net_draw_control_mask, a 1 bit indicates that at least one child should be visible, while a 0 bit indicates that all children are hidden.

getNumChildren int PandaNode::get_num_children(Thread *current_thread = ((get_current_thread()))) const; Description: Returns the number of child nodes this node has. The order of the child nodes *is* meaningful and is based on the sort number that was passed to add_child(), and also on the order in which the nodes were added.

getNumParents int PandaNode::get_num_parents(Thread *current_thread = ((get_current_thread()))) const; Description: Returns the number of parent nodes this node has. If this number is greater than 1, the node has been multiply instanced. The order of the parent nodes is not meaningful and is not related to the order in which the node was instanced to them.

getNumStashed int PandaNode::get_num_stashed(Thread *current_thread = ((get_current_thread()))) const; Description: Returns the number of stashed nodes this node has. These are former children of the node that have been moved to the special stashed list via stash_child().

getOffClipPlanes ConstPointerTo< RenderAttrib > PandaNode::get_off_clip_planes(Thread *current_thread = ((get_current_thread()))) const; Description: Returns a ClipPlaneAttrib which represents the union of all of the clip planes that have been turned *off* at this level and below.

getOverallBit static BitMask< unsigned int, 32 > PandaNode::get_overall_bit(void); Description: Returns the special bit that, when specifically cleared in the node's DrawMask, indicates that the node is hidden to all cameras, regardless of the remaining DrawMask bits.

getParent PandaNode *PandaNode::get_parent(int n, Thread *current_thread = ((get_current_thread()))) const; Description: Returns the nth parent node of this node. See get_num_parents(). Also see get_parents(), if your intention is to iterate through the complete list of parents; get_parents() is preferable in this case.

getPrevTransform TransformState const *PandaNode::get_prev_transform(Thread *current_thread = ((get_current_thread()))) const; Description: Returns the transform that has been set as this node's "previous" position. See set_prev_transform().

getPythonTag PyObject *PandaNode::get_python_tag(string const &key) const; Description: Retrieves the Python object that was previously set on this node for the particular key, if any. If no value has been previously set, returns None.

getStashed PandaNode *PandaNode::get_stashed(int n, Thread *current_thread = ((get_current_thread()))) const; Description: Returns the nth stashed child of this node. See get_num_stashed(). Also see get_stashed(), if your intention is to iterate through the complete list of stashed children; get_stashed() is preferable in this case. Description: Returns an object that can be used to walk through the list of children of the node. When you intend to visit multiple children, using this is slightly faster than calling get_stashed() directly on the PandaNode, since this object avoids reopening the PipelineCycler each time. This object also protects you from self-modifying loops (e.g. adding or removing children during traversal), since a virtual copy of the children is made ahead of time. The virtual copy is fast--it is a form of copy-on-write, so the list is not actually copied unless it is modified during the traversal.

getStashedSort int PandaNode::get_stashed_sort(int n, Thread *current_thread = ((get_current_thread()))) const; Description: Returns the sort index of the nth stashed node of this node (that is, the number that was passed to add_child()). See get_num_stashed().

getState RenderState const *PandaNode::get_state(Thread *current_thread = ((get_current_thread()))) const; Description: Returns the complete RenderState that will be applied to all nodes at this level and below, as set on this node. This returns only the RenderState set on this particular node, and has nothing to do with state that might be inherited from above.

getTag string PandaNode::get_tag(string const &key, Thread *current_thread = ((get_current_thread()))) const; Description: Retrieves the user-defined value that was previously set on this node for the particular key, if any. If no value has been previously set, returns the empty string.

getTransform TransformState const *PandaNode::get_transform(Thread *current_thread = ((get_current_thread()))) const; Description: Returns the transform that has been set on this particular node. This is not the net transform from the root, but simply the transform on this particular node.

getUnexpectedChange unsigned int PandaNode::get_unexpected_change(unsigned int flags) const; Description: Returns nonzero if any of the bits in the input parameter are set on this node, or zero if none of them are set. More specifically, this returns the particular set of bits (masked by the input parameter) that have been set on this node. See set_unexpected_change(). Since this is a developer debugging tool only, this function always returns zero in a production (NDEBUG) build.

hasAttrib bool PandaNode::has_attrib(TypeHandle type) const; Description: Returns true if there is a render attribute of the indicated type defined on this node, or false if there is not.

hasDirtyPrevTransform bool PandaNode::has_dirty_prev_transform(void) const; Description: Returns true if this node has the _dirty_prev_transform flag set, which indicates its _prev_transform is different from its _transform value (in pipeline stage 0). In this case, the node will be visited by reset_prev_transform().

hasEffect bool PandaNode::has_effect(TypeHandle type) const; Description: Returns true if there is a render effect of the indicated type defined on this node, or false if there is not.

hasPythonTag bool PandaNode::has_python_tag(string const &key) const; Description: Returns true if a Python object has been defined on this node for the particular key (even if that object is None), or false if no object has been set.

hasTag bool PandaNode::has_tag(string const &key, Thread *current_thread = ((get_current_thread()))) const; Description: Returns true if a value has been defined on this node for the particular key (even if that value is the empty string), or false if no value has been set.

hasTags bool PandaNode::has_tags(void) const; HAVE_PYTHON Description: Returns true if the node has any tags (or any Python tags) at all, false if it has none.

isAmbientLight virtual bool PandaNode::is_ambient_light(void) const; Description: Returns true if this is an AmbientLight, false if it is not a light, or it is some other kind of light.

isBoundsStale bool PandaNode::is_bounds_stale(void) const; Description: Returns true if the bounding volume of this node is stale and will be implicitly recomputed at the next call to get_bounds(), or false if it is fresh and need not be recomputed.

isFinal bool PandaNode::is_final(Thread *current_thread = ((get_current_thread()))) const; Description: Returns the current state of the "final" flag. Initially, this flag is off (false), but it may be changed by an explicit call to set_final(). See set_final().

isGeomNode virtual bool PandaNode::is_geom_node(void) const; Description: A simple downcast check. Returns true if this kind of node happens to inherit from GeomNode, false otherwise. This is provided as a a faster alternative to calling is_of_type(GeomNode::get_class_type()), since this test is so important to rendering.

isLodNode virtual bool PandaNode::is_lod_node(void) const; Description: A simple downcast check. Returns true if this kind of node happens to inherit from LODNode, false otherwise. This is provided as a a faster alternative to calling is_of_type(LODNode::get_class_type()).

isOverallHidden bool PandaNode::is_overall_hidden(void) const; Description: Returns true if the node has been hidden to all cameras by clearing its overall bit.

isSceneRoot bool PandaNode::is_scene_root(void) const; Description: Returns true if this particular node is known to be the render root of some active DisplayRegion associated with the global GraphicsEngine, false otherwise.

isUnderSceneRoot bool PandaNode::is_under_scene_root(void) const; Description: Returns true if this particular node is in a live scene graph: that is, it is a child or descendent of a node that is itself a scene root. If this is true, this node may potentially be traversed by the render traverser. Stashed nodes don't count for this purpose, but hidden nodes do.

listTags void PandaNode::list_tags(ostream &out, string const &separator = ("\n")) const; Description: Writes a list of all the tag keys assigned to the node to the indicated stream. Writes one instance of the separator following each key (but does not write a terminal separator). The value associated with each key is not written. This is mainly for the benefit of the realtime user, to see the list of all of the associated tag keys.

ls void PandaNode::ls(ostream &out, int indent_level) const; Description: Lists all the nodes at and below the current path hierarchically.

markBoundsStale void PandaNode::mark_bounds_stale(Thread *current_thread = ((get_current_thread()))) const; Description: Indicates that the bounding volume, or something that influences the bounding volume (or any of the other things stored in CData, like net_collide_mask), may have changed for this node, and that it must be recomputed. With no parameters, this means to iterate through all stages including and upstream of the current pipeline stage. This method is intended for internal use; usually it is not necessary for a user to call this directly. It will be called automatically by derived classes when appropriate.

markInternalBoundsStale void PandaNode::mark_internal_bounds_stale(Thread *current_thread = ((get_current_thread()))); Description: Should be called by a derived class to mark the internal bounding volume stale, so that recompute_internal_bounds() will be called when the bounding volume is next requested. Description: Should be called by a derived class to mark the internal bounding volume stale, so that compute_internal_bounds() will be called when the bounding volume is next requested. With no parameters, this means to iterate through all stages including and upstream of the current pipeline stage. It is normally not necessary to call this method directly; each node should be responsible for calling it when its internals have changed.

output virtual void PandaNode::output(ostream &out) const; Description:

prepareScene void PandaNode::prepare_scene(GraphicsStateGuardianBase *gsg, RenderState const *net_state); Description: Walks through the scene graph beginning at this node, and does whatever initialization is required to render the scene properly with the indicated GSG. It is not strictly necessary to call this, since the GSG will initialize itself when the scene is rendered, but this may take some of the overhead away from that process. In particular, this will ensure that textures within the scene are loaded in texture memory, and display lists are built up from static geometry.

removeAllChildren void PandaNode::remove_all_children(Thread *current_thread = ((get_current_thread()))); Description: Removes all the children from the node at once, including stashed children. This can only be called from the top pipeline stage (i.e. from App).

removeChild void PandaNode::remove_child(int child_index, Thread *current_thread = ((get_current_thread()))); Description: Removes the nth child from the node. Description: Removes the indicated child from the node. Returns true if the child was removed, false if it was not already a child of the node. This will also successfully remove the child if it had been stashed.

removeStashed void PandaNode::remove_stashed(int child_index, Thread *current_thread = ((get_current_thread()))); Description: Removes the nth stashed child from the node.

replaceChild bool PandaNode::replace_child(PandaNode *orig_child, PandaNode *new_child, Thread *current_thread = ((get_current_thread()))); Description: Searches for the orig_child node in the node's list of children, and replaces it with the new_child instead. Returns true if the replacement is made, or false if the node is not a child or if there is some other problem.

replaceNode void PandaNode::replace_node(PandaNode *other); Description: Inserts this node into the scene graph in place of the other one, and removes the other node. All scene graph attributes (TransformState, RenderState, etc.) are copied to this node. All children are moved to this node, and removed from the old node. The new node is left in the same place in the old node's parent's list of children. Even NodePaths that reference the old node are updated in-place to reference the new node instead. This method is intended to be used to replace a node of a given type in the scene graph with a node of a different type.

resetAllPrevTransform static void PandaNode::reset_all_prev_transform(Thread *current_thread = ((get_current_thread()))); Description: Visits all nodes in the world with the _dirty_prev_transform flag--that is, all nodes whose _prev_transform is different from the _transform in pipeline stage 0--and resets the _prev_transform to be the same as _transform.

resetPrevTransform void PandaNode::reset_prev_transform(Thread *current_thread = ((get_current_thread()))); Description: Resets the transform that represents this node's "previous" position to the same as the current transform. This is not the same thing as clearing it to identity.

setAttrib void PandaNode::set_attrib(RenderAttrib const *attrib, int override = (0)); Description: Adds the indicated render attribute to the scene graph on this node. This attribute will now apply to this node and everything below. If there was already an attribute of the same type, it is replaced.

setBound void PandaNode::set_bound(BoundingVolume const *volume); Description: Deprecated. Use set_bounds() instead.

setBounds void PandaNode::set_bounds(BoundingVolume const *volume); Description: Resets the bounding volume so that it is the indicated volume. When it is explicitly set, the bounding volume will no longer be automatically computed according to the contents of the node itself, for nodes like GeomNodes and TextNodes that contain substance (but the bounding volume will still be automatically expanded to include its children). Call clear_bounds() if you would like to return the bounding volume to its default behavior later.

setBoundsType void PandaNode::set_bounds_type(BoundingVolume::BoundsType bounds_type); A node has three bounding volumes: an "external" bounding volume that represents the node and all of its children, an "internal" bounding volume which represents only the node itself (and is usually empty, unless a specific node type sets it otherwise), and a "user" bounding volume which is specified by the user. We define set_bounds() and get_bounds() functions so that set_bounds() sets the user bounding volume, while get_bounds() returns the external bounding volume. Although it might seem strange and confusing to do this, this is actually the natural way the user thinks about nodes and bounding volumes. Description: Specifies the desired type of bounding volume that will be created for this node. This is normally BoundingVolume::BT_default, which means to set the type according to the config variable "bounds-type". If this is BT_sphere or BT_box, a BoundingSphere or BoundingBox is explicitly created. If it is BT_best, the appropriate type to best enclose the node's children is created. This affects the bounding volume returned by get_bounds(), which is not exactly the same bounding volume modified by set_bounds(), because a new bounding volume has to be created that includes this node and all of its children.

setEffect void PandaNode::set_effect(RenderEffect const *effect); Description: Adds the indicated render effect to the scene graph on this node. If there was already an effect of the same type, it is replaced.

setEffects void PandaNode::set_effects(RenderEffects const *effects, Thread *current_thread = ((get_current_thread()))); Description: Sets the complete RenderEffects that will be applied this node. This completely replaces whatever has been set on this node via repeated calls to set_attrib().

setFinal void PandaNode::set_final(bool flag); Description: Sets the "final" flag on this PandaNode. If this is true, than no bounding volume need be tested below it; a positive intersection with this node's bounding volume is deemed to be a positive intersection with all geometry inside. This is useful to quickly force a larger bounding volume around a node when the GeomNodes themselves are inaccurate for some reason, without forcing a recompute of every nested bounding volume. It's also helpful when the bounding volume is tricked by some special properties, like billboards, that may move geometry out of its bounding volume otherwise.

setIntoCollideMask void PandaNode::set_into_collide_mask(BitMask< unsigned int, 32 > mask); Description: Sets the "into" CollideMask. This specifies the set of bits that must be shared with a CollisionNode's "from" CollideMask in order for the CollisionNode to detect a collision with this particular node. The actual CollideMask that will be set is masked by the return value from get_legal_collide_mask(). Thus, the into_collide_mask cannot be set to anything other than nonzero except for those types of nodes that can be collided into, such as CollisionNodes and GeomNodes.

setOverallHidden void PandaNode::set_overall_hidden(bool overall_hidden); Description: Sets or clears the hidden flag. When the hidden flag is true, the node and all of its children are invisible to all cameras, regardless of the setting of any draw masks. Setting the hidden flag to false restores the previous visibility as established by the draw masks. This actually works by twiddling the reserved _overall_bit in the node's draw mask, which has special meaning.

setPrevTransform void PandaNode::set_prev_transform(TransformState const *transform, Thread *current_thread = ((get_current_thread()))); Description: Sets the transform that represents this node's "previous" position, one frame ago, for the purposes of detecting motion for accurate collision calculations.

setPythonTag void PandaNode::set_python_tag(string const &key, PyObject *value); Description: Associates an arbitrary Python object with a user-defined key which is stored on the node. This is similar to set_tag(), except it can store any Python object instead of just a string. However, the Python object is not recorded to a bam file. Each unique key stores a different string value. There is no effective limit on the number of different keys that may be stored or on the length of any one key's value.

setState void PandaNode::set_state(RenderState const *state, Thread *current_thread = ((get_current_thread()))); Description: Sets the complete RenderState that will be applied to all nodes at this level and below. (The actual state that will be applied to lower nodes is based on the composition of RenderStates from above this node as well). This completely replaces whatever has been set on this node via repeated calls to set_attrib().

setTag void PandaNode::set_tag(string const &key, string const &value, Thread *current_thread = ((get_current_thread()))); Description: Associates a user-defined value with a user-defined key which is stored on the node. This value has no meaning to Panda; but it is stored indefinitely on the node until it is requested again. Each unique key stores a different string value. There is no effective limit on the number of different keys that may be stored or on the length of any one key's value.

setTransform void PandaNode::set_transform(TransformState const *transform, Thread *current_thread = ((get_current_thread()))); Description: Sets the transform that will be applied to this node and below. This defines a new coordinate space at this point in the scene graph and below.

setUnexpectedChange void PandaNode::set_unexpected_change(unsigned int flags); Description: Sets one or more of the PandaNode::UnexpectedChange bits on, indicating that the corresponding property should not change again on this node. Once one of these bits has been set, if the property changes, an assertion failure will be raised, which is designed to assist the developer in identifying the troublesome code that modified the property unexpectedly. The input parameter is the union of bits that are to be set. To clear these bits later, use clear_unexpected_change(). Since this is a developer debugging tool only, this function does nothing in a production (NDEBUG) build.

stashChild bool PandaNode::stash_child(PandaNode *child_node, Thread *current_thread = ((get_current_thread()))); Description: Stashes the indicated child node. This removes the child from the list of active children and puts it on a special list of stashed children. This child node no longer contributes to the bounding volume of the PandaNode, and is not visited in normal traversals. It is invisible and uncollidable. The child may later be restored by calling unstash_child(). This function returns true if the child node was successfully stashed, or false if it was not a child of the node in the first place (e.g. it was previously stashed). This can only be called from the top pipeline stage (i.e. from App).

stealChildren void PandaNode::steal_children(PandaNode *other, Thread *current_thread = ((get_current_thread()))); Description: Moves all the children from the other node onto this node.

unstashChild bool PandaNode::unstash_child(PandaNode *child_node, Thread *current_thread = ((get_current_thread()))); Description: Returns the indicated stashed node to normal child status. This removes the child from the list of stashed children and puts it on the normal list of active children. This child node once again contributes to the bounding volume of the PandaNode, and will be visited in normal traversals. It is visible and collidable. This function returns true if the child node was successfully stashed, or false if it was not a child of the node in the first place (e.g. it was previously stashed). This can only be called from the top pipeline stage (i.e. from App).

write virtual void PandaNode::write(ostream &out, int indent_level) const; Description:

getClassType static TypeHandle TypedWritable::get_class_type(void); Undocumented function.

getClassType static TypeHandle TypedObject::get_class_type(void); Undocumented function.

getType virtual TypeHandle TypedObject::get_type(void) const = 0; Derived classes should override this function to return get_class_type().

getTypeIndex int TypedObject::get_type_index(void) const; Description: Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. This is equivalent to get_type().get_index().

isExactType bool TypedObject::is_exact_type(TypeHandle handle) const; Description: Returns true if the current object is the indicated type exactly.

isOfType bool TypedObject::is_of_type(TypeHandle handle) const; Description: Returns true if the current object is or derives from the indicated type.

Namable Namable::Namable(string const &initial_name = ("")); Description:

clearName void Namable::clear_name(void); Description: Resets the Namable's name to empty.

getClassType static TypeHandle Namable::get_class_type(void); Undocumented function.

getName string const &Namable::get_name(void) const; Description:

hasName bool Namable::has_name(void) const; Description: Returns true if the Namable has a nonempty name set, false if the name is empty.

operator = Namable &Namable::operator =(Namable const &other); Description:

output void Namable::output(ostream &out) const; In the absence of any definition to the contrary, outputting a Namable will write out its name. Description: Outputs the Namable. This function simply writes the name to the output stream; most Namable derivatives will probably redefine this.

setName void Namable::set_name(string const &name); Description:

getClassType static TypeHandle ReferenceCount::get_class_type(void); Undocumented function.

getRefCount int ReferenceCount::get_ref_count(void) const; Description: Returns the current reference count.

ref void ReferenceCount::ref(void) const; Description: Explicitly increments the reference count. User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically. This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it.

testRefCountIntegrity bool ReferenceCount::test_ref_count_integrity(void) const; Description: Does some easy checks to make sure that the reference count isn't completely bogus. Returns true if ok, false otherwise.

testRefCountNonzero bool ReferenceCount::test_ref_count_nonzero(void) const; Description: Does some easy checks to make sure that the reference count isn't zero, or completely bogus. Returns true if ok, false otherwise.

unref bool ReferenceCount::unref(void) const; Description: Explicitly decrements the reference count. Note that the object will not be implicitly deleted by unref() simply because the reference count drops to zero. (Having a member function delete itself is problematic; plus, we don't have a virtual destructor anyway.) However, see the helper function unref_delete(). User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically. This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it. The return value is true if the new reference count is nonzero, false if it is zero.