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CollisionNode Class Reference

A node in the scene graph that can hold any number of CollisionSolids. More...

#include <collisionNode.h>

Inheritance diagram for CollisionNode:

PandaNode TypedWritable Namable BoundedObject ReferenceCount TypedObject List of all members.

Public Types

enum  BoundingVolumeType { BVT_static, BVT_dynamic_sphere }

Public Member Functions

 CollisionNode (const string &name)
virtual ~CollisionNode ()
virtual PandaNode * make_copy () const
 Returns a newly-allocated Node that is a shallow copy of this one.

virtual bool preserve_name () const
 Returns true if the node's name has extrinsic meaning and must be preserved across a flatten operation, false otherwise.

virtual void xform (const LMatrix4f &mat)
 Transforms the contents of this node by the indicated matrix, if it means anything to do so.

virtual PandaNode * combine_with (PandaNode *other)
 Collapses this node with the other node, if possible, and returns a pointer to the combined node, or NULL if the two nodes cannot safely be combined.

virtual bool has_cull_callback () const
 Should be overridden by derived classes to return true if cull_callback() has been defined.

virtual bool cull_callback (CullTraverser *trav, CullTraverserData &data)
 If has_cull_callback() returns true, this function will be called during the cull traversal to perform any additional operations that should be performed at cull time.

virtual void output (ostream &out) const
 Writes a brief description of the node to the indicated output stream.

void set_collide_mask (CollideMask mask)
 Simultaneously sets both the "from" and "into" CollideMask values to the same thing.

void set_from_collide_mask (CollideMask mask)
 Sets the "from" CollideMask.

void set_into_collide_mask (CollideMask mask)
 Sets the "into" CollideMask.

CollideMask get_from_collide_mask () const
 Returns the current "from" CollideMask.

CollideMask get_into_collide_mask () const
 Returns the current "into" CollideMask.

void set_collide_geom (bool flag)
 Sets the state of the "collide geom" flag for this CollisionNode.

bool get_collide_geom () const
 Returns the current state of the collide_geom flag.

int get_num_solids () const
CollisionSolid * get_solid (int n) const
void remove_solid (int n)
 Removes the solid with the indicated index.

int add_solid (CollisionSolid *solid)
 Adds the indicated solid to the node.

virtual void set_velocity (const LVector3f &vel)
 Indicates the instantaneous velocity of the node.

void clear_velocity ()
 Removes the velocity information associated with the node.

bool has_velocity () const
 Returns true if the node has an associated velocity, false otherwise.

const LVector3f & get_velocity () const
 Returns the instantaneous velocity of the node, in its own coordinate space.

virtual void write_datagram (BamWriter *manager, Datagram &dg)
 Writes the contents of this object to the datagram for shipping out to a Bam file.

virtual int complete_pointers (TypedWritable **plist, BamReader *manager)
 Receives an array of pointers, one for each time manager->read_pointer() was called in fillin().

virtual TypeHandle get_type (void) const
virtual TypeHandle force_init_type ()
virtual bool safe_to_flatten () const
 Returns true if it is generally safe to flatten out this particular kind of PandaNode by duplicating instances, false otherwise (for instance, a Camera cannot be safely flattened, because the Camera pointer itself is meaningful).

virtual bool safe_to_transform () const
 Returns true if it is generally safe to transform this particular kind of PandaNode by calling the xform() method, false otherwise.

virtual bool safe_to_modify_transform () const
 Returns true if it is safe to automatically adjust the transform on this kind of node.

virtual bool safe_to_combine () const
 Returns true if it is generally safe to combine this particular kind of PandaNode with other kinds of PandaNodes, adding children or whatever.

virtual bool safe_to_flatten_below () const
 Returns true if a flatten operation may safely continue past this node, or false if it should drop all attributes here and stop.

virtual int get_unsafe_to_apply_attribs () const
 Returns the union of all attributes from SceneGraphReducer::AttribTypes that may not safely be applied to the vertices of this node.

virtual void apply_attribs_to_vertices (const AccumulatedAttribs &attribs, int attrib_types, GeomTransformer &transformer)
 Applies whatever attributes are specified in the AccumulatedAttribs object (and by the attrib_types bitmask) to the vertices on this node, if appropriate.

virtual ConstPointerTo< TransformState > calc_tight_bounds (LPoint3f &min_point, LPoint3f &max_point, bool &found_any, const TransformState *transform) const
 This is used to support NodePath::calc_tight_bounds().

virtual bool has_selective_visibility () const
 Should be overridden by derived classes to return true if this kind of node has some restrictions on the set of children that should be rendered.

virtual int get_first_visible_child () const
 Returns the index number of the first visible child of this node, or a number >= get_num_children() if there are no visible children of this node.

virtual int get_next_visible_child (int n) const
 Returns the index number of the next visible child of this node following the indicated child, or a number >= get_num_children() if there are no more visible children of this node.

virtual bool has_single_child_visibility () const
 Should be overridden by derived classes to return true if this kind of node has the special property that just one of its children is visible at any given time, and furthermore that the particular visible child can be determined without reference to any external information (such as a camera).

virtual int get_visible_child () const
 Returns the index number of the currently visible child of this node.

PointerTo< PandaNode > copy_subgraph () const
 Allocates and returns a complete copy of this PandaNode and the entire scene graph rooted at this PandaNode.

int get_num_parents () const
 Returns the number of parent nodes this node has.

PandaNode * get_parent (int n) const
 Returns the nth parent node of this node.

int find_parent (PandaNode *node) const
 Returns the index of the indicated parent node, if it is a parent, or -1 if it is not.

int get_num_children () const
 Returns the number of child nodes this node has.

PandaNode * get_child (int n) const
 Returns the nth child node of this node.

int get_child_sort (int n) const
 Returns the sort index of the nth child node of this node (that is, the number that was passed to add_child()).

int find_child (PandaNode *node) const
 Returns the index of the indicated child node, if it is a child, or -1 if it is not.

void add_child (PandaNode *child_node, int sort=0)
 Adds a new child to the node.

void remove_child (int n)
 Removes the nth child from the node.

bool remove_child (PandaNode *child_node)
 Removes the indicated child from the node.

bool replace_child (PandaNode *orig_child, PandaNode *new_child)
 Searches for the orig_child node in the node's list of children, and replaces it with the new_child instead.

bool stash_child (PandaNode *child_node)
 Stashes the indicated child node.

void stash_child (int child_index)
 Stashes the indicated child node.

bool unstash_child (PandaNode *child_node)
 Returns the indicated stashed node to normal child status.

void unstash_child (int stashed_index)
 Returns the indicated stashed node to normal child status.

int get_num_stashed () const
 Returns the number of stashed nodes this node has.

PandaNode * get_stashed (int n) const
 Returns the nth stashed node of this node.

int get_stashed_sort (int n) const
 Returns the sort index of the nth stashed node of this node (that is, the number that was passed to add_child()).

int find_stashed (PandaNode *node) const
 Returns the index of the indicated stashed node, if it is a stashed child, or -1 if it is not.

void add_stashed (PandaNode *child_node, int sort=0)
 Adds a new child to the node, directly as a stashed child.

void remove_stashed (int n)
 Removes the nth stashed child from the node.

void remove_all_children ()
 Removes all the children from the node at once, including stashed children.

void steal_children (PandaNode *other)
 Moves all the children from the other node onto this node.

void copy_children (PandaNode *other)
 Makes another instance of all the children of the other node, copying them to this node.

void set_attrib (const RenderAttrib *attrib, int override=0)
 Adds the indicated render attribute to the scene graph on this node.

const RenderAttrib * get_attrib (TypeHandle type) const
 Returns the render attribute of the indicated type, if it is defined on the node, or NULL if it is not.

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

void clear_attrib (TypeHandle type)
 Removes the render attribute of the given type from this node.

void set_effect (const RenderEffect *effect)
 Adds the indicated render effect to the scene graph on this node.

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

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

void clear_effect (TypeHandle type)
 Removes the render effect of the given type from this node.

void set_state (const RenderState *state)
 Sets the complete RenderState that will be applied to all nodes at this level and below.

const RenderState * get_state () const
 Returns the complete RenderState that will be applied to all nodes at this level and below, as set on this node.

void clear_state ()
 Resets this node to leave the render state alone.

void set_effects (const RenderEffects *effects)
 Sets the complete RenderEffects that will be applied this node.

const RenderEffects * get_effects () const
 Returns the complete RenderEffects that will be applied to this node.

void clear_effects ()
 Resets this node to have no render effects.

void set_transform (const TransformState *transform)
 Sets the transform that will be applied to this node and below.

const TransformState * get_transform () const
 Returns the transform that has been set on this particular node.

void clear_transform ()
 Resets the transform on this node to the identity transform.

void set_draw_mask (DrawMask mask)
 Sets the hide/show bits of this particular node.

DrawMask get_draw_mask () const
 Returns the hide/show bits of this particular node.

CollideMask get_net_collide_mask () const
 Returns the union of all into_collide_mask() values set at CollisionNodes at this level and below.

virtual void write (ostream &out, int indent_level) const
void ls (ostream &out, int indent_level) const
 Lists all the nodes at and below the current path hierarchically.

void set_bound (BoundingVolumeType type)
 Sets the type of the external bounding volume that is placed around this node and all of its children.

void set_bound (const BoundingVolume &volume)
 Resets the internal bounding volume so that it is the indicated volume.

void set_bound (BoundingVolumeType type)
 Sets the type of the bounding volume that will be dynamically computed for this particular node.

const BoundingVolume & get_bound () const
 Returns the node's external bounding volume.

const BoundingVolume & get_internal_bound () const
 Returns the node's internal bounding volume.

virtual bool is_geom_node () const
 A simple downcast check.

virtual Light * as_light ()
 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.

Children get_children () const
 Returns an object that can be used to walk through the list of children of the node.

ChildrenCopy get_children_copy () const
 Returns an object that can be used to walk through the list of children of the node.

virtual void finalize ()
 Called by the BamReader to perform any final actions needed for setting up the object after all objects have been read and all pointers have been completed.

int get_type_index () const
 Returns the internal index number associated with this object's TypeHandle, a unique number for each different type.

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

bool is_exact_type (TypeHandle handle) const
 Returns true if the current object is the indicated type exactly.

void set_name (const string &name)
void clear_name ()
 Resets the Namable's name to empty.

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

const string & get_name () const
bool mark_bound_stale ()
 Marks the current bounding volume as stale, so that it will be recomputed later.

void force_bound_stale ()
 Marks the current volume as stale and propagates the effect at least one level, even if it had already been marked stale.

bool is_bound_stale () const
 Returns true if the bound is currently marked stale and will be recomputed the next time get_bound() is called.

void set_final (bool flag)
 Sets the "final" flag on this BoundedObject.

bool is_final () const
 Returns the current state of the "final" flag.

int get_ref_count () const
 Returns the current reference count.

int ref () const
 Explicitly increments the reference count.

int unref () const
 Explicitly decrements the reference count.

void test_ref_count_integrity () const
 Does some easy checks to make sure that the reference count isn't completely bogus.


Static Public Member Functions

void register_with_read_factory ()
 Tells the BamReader how to create objects of type CollisionNode.

TypeHandle get_class_type (void)
void init_type (void)

Static Public Attributes

TypedWritable *const Null = (TypedWritable*)0L

Protected Types

typedef pmap< PandaNode *,
PandaNode * > 		InstanceMap

Protected Member Functions

 CollisionNode (const CollisionNode &copy)
virtual BoundingVolume * recompute_bound ()
 Recomputes the dynamic bounding volume for this object.

virtual BoundingVolume * recompute_internal_bound ()
 Called when needed to recompute the node's _internal_bound object.

void fillin (DatagramIterator &scan, BamReader *manager)
 This internal function is called by make_from_bam to read in all of the relevant data from the BamFile for the new CollisionNode.

virtual void propagate_stale_bound ()
 Called by BoundedObject::mark_bound_stale(), this should make sure that all bounding volumes that depend on this one are marked stale also.

void changed_internal_bound ()
 Should be called whenever you adjust the _internal_bound member, to force the external bounding volume to be recomputed.

virtual void parents_changed ()
 Called after a scene graph update that either adds or remove parents from this node, this just provides a hook for derived PandaNode objects that need to update themselves based on the set of parents the node has.

virtual void children_changed ()
 Called after a scene graph update that either adds or remove children from this node, this just provides a hook for derived PandaNode objects that need to update themselves based on the set of children the node has.

virtual void transform_changed ()
 Called after the node's transform has been changed for any reason, this just provides a hook so derived classes can do something special in this case.

void add_net_collide_mask (CollideMask mask)
 Adds the indicated bits into the net_collide_mask for this node.

virtual PointerTo< PandaNode > r_copy_subgraph (InstanceMap &inst_map) const
 This is the recursive implementation of copy_subgraph().

virtual void r_copy_children (const PandaNode *from, InstanceMap &inst_map)
 This is called by r_copy_subgraph(); the copy has already been made of this particular node (and this is the copy); this function's job is to copy all of the children from the original.

const BoundingVolume * get_bound_ptr () const
 Returns the state of the _bound pointer.

BoundingVolume * set_bound_ptr (BoundingVolume *bound)
 Changes the _bound pointer.


Static Protected Member Functions

TypedWritable * make_from_bam (const FactoryParams &params)
 This function is called by the BamReader's factory when a new object of type CollisionNode is encountered in the Bam file.


Protected Attributes

BoundedObject _internal_bound

Private Types

typedef pvector< PointerTo<
CollisionSolid > > 		Solids
enum  Flags { F_collide_geom = 0x0001, F_has_velocity = 0x0002 }

Private Member Functions

ConstPointerTo< RenderState > get_last_pos_state ()
 Returns a RenderState for rendering the ghosted collision solid that represents the previous frame's position, for those collision nodes that indicate a velocity.


Private Attributes

CollideMask _from_collide_mask
CollideMask _into_collide_mask
LVector3f _velocity
int _flags
Solids _solids

Static Private Attributes

TypeHandle _type_handle

Friends

class PandaNode::Children

Detailed 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.

Definition at line 47 of file collisionNode.h.

Member Typedef Documentation

typedef pmap<PandaNode *, PandaNode *> PandaNode::InstanceMap [protected, inherited]
 

Definition at line 206 of file pandaNode.h.

typedef pvector< PointerTo< CollisionSolid > > CollisionNode::Solids [private]
 

Definition at line 107 of file collisionNode.h.

Member Enumeration Documentation

enum BoundedObject::BoundingVolumeType [inherited]
 

Enumeration values:
BVT_static 
BVT_dynamic_sphere 

Definition at line 58 of file boundedObject.h.

enum CollisionNode::Flags [private]
 

Enumeration values:
F_collide_geom 
F_has_velocity 

Reimplemented from BoundedObject.

Definition at line 100 of file collisionNode.h.

Constructor & Destructor Documentation

CollisionNode::CollisionNode (  const string &  name  ) 
 

Definition at line 48 of file collisionNode.cxx.

References PandaNode::set_draw_mask().

Referenced by ~CollisionNode().

CollisionNode::CollisionNode (  const CollisionNode &  copy  )  [protected]
 

Definition at line 67 of file collisionNode.cxx.

CollisionNode::~CollisionNode (   )  [virtual]
 

Definition at line 85 of file collisionNode.cxx.

References CollisionNode().

Member Function Documentation

void PandaNode::add_child (  PandaNode *  child_node,
int  sort = 0
)  [inherited]
 

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.

Definition at line 1090 of file pandaNode.cxx.

References PandaNode::_cycler, PandaNode::children_changed(), PandaNode::new_connection(), PT, and PandaNode::remove_child().

Referenced by PandaNode::replace_child(), and PandaNode::steal_children().

void PandaNode::add_net_collide_mask (  CollideMask  mask  )  [inline, protected, inherited]
 

Adds the indicated bits into the net_collide_mask for this node.

This is normally called only by CollisionNode::recompute_bound().

Definition at line 1071 of file pandaNode.I.

int CollisionNode::add_solid (  CollisionSolid *  solid  )  [inline]
 

Adds the indicated solid to the node.

Returns the index of the new solid within the node's list of solids.

Definition at line 235 of file collisionNode.I.

void PandaNode::add_stashed (  PandaNode *  child_node,
int  sort = 0
)  [inherited]
 

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.

Definition at line 1406 of file pandaNode.cxx.

void PandaNode::apply_attribs_to_vertices (  const AccumulatedAttribs &  attribs,
int  attrib_types,
GeomTransformer &  transformer
)  [virtual, inherited]
 

Applies whatever attributes are specified in the AccumulatedAttribs object (and by the attrib_types bitmask) to the vertices on this node, if appropriate.

If this node uses geom arrays like a GeomNode, the supplied GeomTransformer may be used to unify shared arrays across multiple different nodes.

This is a generalization of xform().

Reimplemented in GeomNode, and TextNode.

Definition at line 687 of file pandaNode.cxx.

Light * PandaNode::as_light (   )  [virtual, inherited]
 

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.

Reimplemented in LightLensNode, and LightNode.

Definition at line 1641 of file pandaNode.cxx.

ConstPointerTo< TransformState > PandaNode::calc_tight_bounds (  LPoint3f &  min_point,
LPoint3f &  max_point,
bool &  found_any,
const TransformState *  transform
)  const [virtual, inherited]
 

This is used to support NodePath::calc_tight_bounds().

It is not intended to be called directly, and it has nothing to do with the normal Panda bounding-volume computation.

If the node contains any geometry, this updates min_point and max_point to enclose its bounding box. found_any is to be set true if the node has any geometry at all, or left alone if it has none. This method may be called over several nodes, so it may enter with min_point, max_point, and found_any already set.

This function is recursive, and the return value is the transform after it has been modified by this node's transform.

Reimplemented in GeomNode, and TextNode.

Definition at line 807 of file pandaNode.cxx.

Referenced by NodePath::clear_depth_test().

void PandaNode::changed_internal_bound (   )  [inline, protected, inherited]
 

Should be called whenever you adjust the _internal_bound member, to force the external bounding volume to be recomputed.

Definition at line 1054 of file pandaNode.I.

void PandaNode::children_changed (   )  [protected, virtual, inherited]
 

Called after a scene graph update that either adds or remove children from this node, this just provides a hook for derived PandaNode objects that need to update themselves based on the set of children the node has.

Definition at line 1840 of file pandaNode.cxx.

Referenced by PandaNode::add_child(), and PandaNode::remove_child().

void PandaNode::clear_attrib (  TypeHandle  type  )  [inline, inherited]
 

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.

Definition at line 630 of file pandaNode.I.

Referenced by NodePath::clear_bin(), NodePath::clear_render_mode(), NodePath::has_texture(), and NodePath::set_texture_off().

void PandaNode::clear_effect (  TypeHandle  type  )  [inline, inherited]
 

Removes the render effect of the given type from this node.

Definition at line 703 of file pandaNode.I.

References PandaNode::_cycler, BoundedObject::get_bound(), and INLINE.

void PandaNode::clear_effects (   )  [inline, inherited]
 

Resets this node to have no render effects.

Definition at line 819 of file pandaNode.I.

References PandaNode::_cycler, and INLINE.

void Namable::clear_name (   )  [inline, inherited]
 

Resets the Namable's name to empty.

Definition at line 82 of file namable.I.

References Namable::_name, and INLINE.

void PandaNode::clear_state (   )  [inline, inherited]
 

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.

Definition at line 769 of file pandaNode.I.

References PandaNode::_internal_bound.

void PandaNode::clear_transform (   )  [inline, inherited]
 

Resets the transform on this node to the identity transform.

Definition at line 875 of file pandaNode.I.

Referenced by NodePath::get_transform().

void CollisionNode::clear_velocity (   )  [inline]
 

Removes the velocity information associated with the node.

See set_velocity().

Definition at line 252 of file collisionNode.I.

PandaNode * CollisionNode::combine_with (  PandaNode *  other  )  [virtual]
 

Collapses this node with the other node, if possible, and returns a pointer to the combined node, or NULL if the two nodes cannot safely be combined.

The return value may be this, other, or a new node 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 nodes and what the collapsed node should look like.

Reimplemented from PandaNode.

Definition at line 189 of file collisionNode.cxx.

References _solids, CullTraverserData::_state, CPT, get_velocity(), CollisionSolid::get_viz(), has_velocity(), RenderState::make_empty(), TransformState::make_pos(), and CullTraverser::traverse().

int CollisionNode::complete_pointers (  TypedWritable **  plist,
BamReader *  manager
)  [virtual]
 

Receives an array of pointers, one for each time manager->read_pointer() was called in fillin().

Returns the number of pointers processed.

Reimplemented from TypedWritable.

Definition at line 524 of file collisionNode.cxx.

void PandaNode::copy_children (  PandaNode *  other  )  [inherited]
 

Makes another instance of all the children of the other node, copying them to this node.

Definition at line 1546 of file pandaNode.cxx.

References NULL.

PointerTo< PandaNode > PandaNode::copy_subgraph (   )  const [inherited]
 

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.

Definition at line 1037 of file pandaNode.cxx.

References PandaNode::_cycler, PandaNode::get_num_stashed(), PandaNode::get_stashed(), PandaNode::get_stashed_sort(), nassertv, PT, and PandaNode::remove_stashed().

bool CollisionNode::cull_callback (  CullTraverser *  trav,
CullTraverserData &  data
)  [virtual]
 

If has_cull_callback() returns true, this function will be called during the cull traversal to perform any additional operations that should be performed at cull time.

This may include additional manipulation of render state or additional visible/invisible decisions, or any other arbitrary operation.

By the time this function is called, the node has already passed the bounding-volume test for the viewing frustum, and the node's transform and state have already been applied to the indicated CullTraverserData object.

The return value is true if this node should be visible, or false if it should be culled.

Reimplemented from PandaNode.

Definition at line 268 of file collisionNode.cxx.

References _flags, _velocity, and F_has_velocity.

void CollisionNode::fillin (  DatagramIterator &  scan,
BamReader *  manager
)  [protected]
 

This internal function is called by make_from_bam to read in all of the relevant data from the BamFile for the new CollisionNode.

Reimplemented from PandaNode.

Definition at line 574 of file collisionNode.cxx.

void TypedWritable::finalize (  void   )  [virtual, inherited]
 

Called by the BamReader to perform any final actions needed for setting up the object after all objects have been read and all pointers have been completed.

Reimplemented in PartBundle, RenderAttrib, RenderEffect, RenderEffects, RenderState, and TransformState.

Definition at line 112 of file typedWritable.cxx.

Referenced by BamReader::skip_pointer().

int PandaNode::find_child (  PandaNode *  node  )  const [inherited]
 

Returns the index of the indicated child node, if it is a child, or -1 if it is not.

Definition at line 1053 of file pandaNode.cxx.

Referenced by PandaNode::cull_callback(), PandaFramework::event_i(), PandaFramework::event_l(), and PandaNode::get_parent().

int PandaNode::find_parent (  PandaNode *  node  )  const [inline, inherited]
 

Returns the index of the indicated parent node, if it is a parent, or -1 if it is not.

Definition at line 350 of file pandaNode.I.

Referenced by PandaNode::cull_callback(), and PandaNode::has_selective_visibility().

int PandaNode::find_stashed (  PandaNode *  node  )  const [inherited]
 

Returns the index of the indicated stashed node, if it is a stashed child, or -1 if it is not.

Definition at line 1370 of file pandaNode.cxx.

Referenced by NodePath::clear_two_sided(), and PandaNode::cull_callback().

void BoundedObject::force_bound_stale (   )  [inline, inherited]
 

Marks the current volume as stale and propagates the effect at least one level, even if it had already been marked stale.

Definition at line 188 of file boundedObject.I.

References BoundedObject::_cycler, BoundedObject::F_final, and INLINE.

Referenced by PandaNode::remove_child().

virtual TypeHandle CollisionNode::force_init_type (  void   )  [inline, virtual]
 

Reimplemented from PandaNode.

Definition at line 131 of file collisionNode.h.

const RenderAttrib * PandaNode::get_attrib (  TypeHandle  type  )  const [inline, inherited]
 

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.

Definition at line 587 of file pandaNode.I.

References PandaNode::_cycler, and INLINE.

Referenced by NodePath::get_bin_draw_order(), NodePath::get_bin_name(), NodePath::get_color(), NodePath::get_quat(), NodePath::has_bin(), NodePath::has_material(), NodePath::has_texture_off(), NodePath::set_mat(), and NodePath::set_material().

const BoundingVolume & PandaNode::get_bound (   )  const [inline, inherited]
 

Returns the node's external bounding volume.

This is the bounding volume around the node and all of its children.

Reimplemented from BoundedObject.

Definition at line 1015 of file pandaNode.I.

const BoundingVolume * BoundedObject::get_bound_ptr (   )  const [inline, protected, inherited]
 

Returns the state of the _bound pointer.

To be used only internally by derived classes.

This returns a const pointer only; the bounding volume should not be modified directly, because that might interfere with pipelining. Instead, create a new copy with make_copy(), modify the copy, and set_bound_ptr() with the copy.

Alternatively, if you have just called recompute_bound(), which is guaranteed to reset the pointer, just use the return value from that as a non-const BoundingVolume pointer.

Definition at line 318 of file boundedObject.I.

PandaNode * PandaNode::get_child (  int  n  )  const [inline, inherited]
 

Returns the nth child node of this node.

See get_num_children().

Definition at line 390 of file pandaNode.I.

References PandaNode::_cycler, INLINE, nassertr, and NULL.

Referenced by PandaFramework::event_i(), PandaFramework::event_l(), PandaNode::has_single_child_visibility(), PT(), and PandaNode::replace_child().

int PandaNode::get_child_sort (  int  n  )  const [inline, inherited]
 

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().

Definition at line 409 of file pandaNode.I.

References PandaNode::_cycler, INLINE, and nassertr.

Referenced by PandaNode::has_single_child_visibility(), and PandaNode::replace_child().

PandaNode::Children PandaNode::get_children (   )  const [inline, inherited]
 

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_child() directly on the PandaNode, since this object keeps the PipelineCycler open the whole time.

However, this object does not protect you from self-modifying loops (e.g. adding or removing children during traversal).

Definition at line 1103 of file pandaNode.I.

Referenced by CullTraverser::get_bounds_inner_viz_state(), NodePath::get_top_node(), SortByState::operator()(), PandaNode::preserve_name(), NodePath::set_transparency(), and DataGraphTraverser::traverse().

PandaNode::ChildrenCopy PandaNode::get_children_copy (   )  const [inline, inherited]
 

Returns an object that can be used to walk through the list of children of the node.

Unlike get_children(), this function actually returns an object that protects you from self-modifying loops, because it makes and returns a copy of the complete children list.

Definition at line 1127 of file pandaNode.I.

TypeHandle CollisionNode::get_class_type (  void   )  [inline, static]
 

Reimplemented from PandaNode.

Definition at line 120 of file collisionNode.h.

Referenced by DeferredNodeProperty::compose(), PandaFramework::reset_frame_rate(), PandaFramework::set_texture(), and xform().

bool CollisionNode::get_collide_geom (   )  const [inline]
 

Returns the current state of the collide_geom flag.

See set_collide_geom().

Definition at line 176 of file collisionNode.I.

References _flags, F_has_velocity, and INLINE.

DrawMask PandaNode::get_draw_mask (   )  const [inline, inherited]
 

Returns the hide/show bits of this particular node.

See set_draw_mask().

Definition at line 938 of file pandaNode.I.

Referenced by CullTraverserData::~CullTraverserData().

const RenderEffect * PandaNode::get_effect (  TypeHandle  type  )  const [inline, inherited]
 

Returns the render effect of the indicated type, if it is defined on the node, or NULL if it is not.

Definition at line 664 of file pandaNode.I.

References INLINE, and PandaNode::r_list_descendants().

const RenderEffects * PandaNode::get_effects (   )  const [inline, inherited]
 

Returns the complete RenderEffects that will be applied to this node.

Definition at line 805 of file pandaNode.I.

References PandaNode::_cycler, and INLINE.

Referenced by CullTraverser::traverse().

int PandaNode::get_first_visible_child (   )  const [virtual, inherited]
 

Returns the index number of the first visible child of this node, or a number >= get_num_children() if there are no visible children of this node.

This is called during the cull traversal, but only if has_selective_visibility() has already returned true. See has_selective_visibility().

Reimplemented in SelectiveChildNode.

Definition at line 941 of file pandaNode.cxx.

Referenced by CullTraverser::get_bounds_inner_viz_state().

CollideMask CollisionNode::get_from_collide_mask (   )  const [inline]
 

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.

Definition at line 103 of file collisionNode.I.

References _flags, F_collide_geom, and INLINE.

const BoundingVolume & PandaNode::get_internal_bound (   )  const [inline, inherited]
 

Returns the node's internal bounding volume.

This is the bounding volume around the node alone, without including children.

Definition at line 1032 of file pandaNode.I.

CollideMask CollisionNode::get_into_collide_mask (   )  const [inline]
 

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.

Definition at line 124 of file collisionNode.I.

References _flags, and F_collide_geom.

ConstPointerTo< RenderState > CollisionNode::get_last_pos_state (   )  [private]
 

Returns a RenderState for rendering the ghosted collision solid that represents the previous frame's position, for those collision nodes that indicate a velocity.

Definition at line 457 of file collisionNode.cxx.

References _flags, _from_collide_mask, and _into_collide_mask.

const string & Namable::get_name (   )  const [inline, inherited]
 

Definition at line 109 of file namable.I.

Referenced by ComputedVerticesMaker::add_normal(), GLGraphicsStateGuardian::begin_bind_clip_planes(), GLGraphicsStateGuardian::begin_bind_lights(), BuilderBucket::BuilderBucket(), EggVertex::clear_grefs(), AnimBundleMaker::create_xfm_channel(), SceneGraphReducer::do_flatten_siblings(), BuilderBucket::done_geom(), DXTextureContext8::DXTextureContext8(), PartGroup::find_child(), EggLoader::find_collision_geometry(), EggGroupUniquifier::get_category(), PartBundle::get_control_effect(), PartGroup::get_num_children(), EggMorph< Parameter >::get_offset(), AnimChannelBase::has_changed(), Namable::has_name(), EggMaterial::is_equivalent_to(), Texture::load(), EggLoader::make_node(), AnimBundleMaker::make_node(), FindApproxPath::Component::matches(), LineSegs::move_to(), MovingPartBase::MovingPartBase(), NodeMap::NodeMap(), EggMorph< Parameter >::operator<(), operator<<(), MouseWatcherRegion::output(), AnimGroup::output(), EggXfmSAnim::r_transform(), Texture::read(), MouseWatcherGroup::remove_region(), EggLoader::reparent_decals(), CRGraphicsStateGuardian::set_blend_mode(), NodePath::set_color(), GLGraphicsStateGuardian::set_draw_buffer(), AnimChannelScalarTable::set_table(), NodePath::set_transparency(), NodePathComponent::uncollapse(), Texture::unprepare(), TextNode::wordwrap_to(), MovingPartBase::write(), xform(), and EggVertex::~EggVertex().

CollideMask PandaNode::get_net_collide_mask (   )  const [inline, inherited]
 

Returns the union of all into_collide_mask() values set at CollisionNodes at this level and below.

Definition at line 954 of file pandaNode.I.

int PandaNode::get_next_visible_child (  int  n  )  const [virtual, inherited]
 

Returns the index number of the next visible child of this node following the indicated child, or a number >= get_num_children() if there are no more visible children of this node.

See has_selective_visibility() and get_first_visible_child().

Reimplemented in SelectiveChildNode.

Definition at line 964 of file pandaNode.cxx.

int PandaNode::get_num_children (   )  const [inline, inherited]
 

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.

Definition at line 374 of file pandaNode.I.

Referenced by PandaFramework::event_l(), SelectiveChildNode::has_selective_visibility(), PandaNode::has_single_child_visibility(), PT(), and LODNode::xform().

int PandaNode::get_num_parents (   )  const [inline, inherited]
 

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.

Definition at line 317 of file pandaNode.I.

References PandaNode::_cycler, INLINE, and nassertr.

Referenced by ParticleSystem::birth_litter(), DataNode::define_output(), Fog::output(), PandaNode::transform_changed(), and DataGraphTraverser::traverse().

int CollisionNode::get_num_solids (   )  const [inline]
 

Definition at line 188 of file collisionNode.I.

References _flags, F_has_velocity, and INLINE.

int PandaNode::get_num_stashed (   )  const [inline, inherited]
 

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().

Definition at line 508 of file pandaNode.I.

References PandaNode::_cycler, and INLINE.

Referenced by PandaNode::copy_subgraph().

PandaNode * PandaNode::get_parent (  int  n  )  const [inline, inherited]
 

Returns the nth parent node of this node.

See get_num_parents().

Definition at line 333 of file pandaNode.I.

References PandaNode::find_child(), INLINE, and PandaNode::stash_child().

Referenced by ParticleSystem::birth_litter(), and DataNode::define_output().

int ReferenceCount::get_ref_count (   )  const [inline, inherited]
 

Returns the current reference count.

Definition at line 183 of file referenceCount.I.

Referenced by RenderState::determine_bin_index(), RenderEffects::determine_show_bounds(), FontPool::ns_garbage_collect(), TexturePool::ns_garbage_collect(), MaterialPool::ns_get_material(), and TexturePool::ns_release_texture().

CollisionSolid * CollisionNode::get_solid (  int  n  )  const [inline]
 

Definition at line 200 of file collisionNode.I.

References _velocity, has_velocity(), INLINE, and nassertr.

PandaNode * PandaNode::get_stashed (  int  n  )  const [inline, inherited]
 

Returns the nth stashed node of this node.

See get_num_stashed().

Definition at line 524 of file pandaNode.I.

References PandaNode::_cycler, and INLINE.

Referenced by PandaNode::copy_subgraph().

int PandaNode::get_stashed_sort (  int  n  )  const [inline, inherited]
 

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().

Definition at line 543 of file pandaNode.I.

References PandaNode::_cycler, and INLINE.

Referenced by PandaNode::copy_subgraph().

const RenderState * PandaNode::get_state (   )  const [inline, inherited]
 

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.

Reimplemented in PGItem.

Definition at line 749 of file pandaNode.I.

References BoundedObject::get_bound(), and INLINE.

Referenced by NodePath::do_billboard_point_eye().

const TransformState * PandaNode::get_transform (   )  const [inline, inherited]
 

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.

Reimplemented in TrackerNode, and TextNode.

Definition at line 859 of file pandaNode.I.

Referenced by NodePath::do_billboard_point_world(), PandaNode::preserve_name(), NodePath::set_transform(), ActorNode::update_transform(), and CullTraverserData::~CullTraverserData().

virtual TypeHandle CollisionNode::get_type (  void   )  const [inline, virtual]
 

Reimplemented from PandaNode.

Definition at line 128 of file collisionNode.h.

int TypedObject::get_type_index (   )  const [inline, inherited]
 

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().

Definition at line 71 of file typedObject.I.

References TypeHandle::get_name(), TypedObject::get_type(), and INLINE.

int PandaNode::get_unsafe_to_apply_attribs (   )  const [virtual, inherited]
 

Returns the union of all attributes from SceneGraphReducer::AttribTypes that may not safely be applied to the vertices of this node.

If this is nonzero, these attributes must be dropped at this node as a state change.

This is a generalization of safe_to_transform().

Reimplemented in TextNode.

Definition at line 660 of file pandaNode.cxx.

const LVector3f & CollisionNode::get_velocity (   )  const [inline]
 

Returns the instantaneous velocity of the node, in its own coordinate space.

This represents the delta between its current position and its position last frame. See set_velocity().

Definition at line 286 of file collisionNode.I.

Referenced by combine_with(), and CollisionLevelState::prepare_collider().

int PandaNode::get_visible_child (   )  const [virtual, inherited]
 

Returns the index number of the currently visible child of this node.

This is only meaningful if has_single_child_visibility() has returned true.

Reimplemented in SequenceNode, and SwitchNode.

Definition at line 1016 of file pandaNode.cxx.

bool PandaNode::has_attrib (  TypeHandle  type  )  const [inline, inherited]
 

Returns true if there is a render attribute of the indicated type defined on this node, or false if there is not.

Definition at line 609 of file pandaNode.I.

References PandaNode::_cycler, INLINE, and RenderEffects::make_empty().

Referenced by NodePath::clear_material(), NodePath::get_hpr(), NodePath::set_hpr_scale(), and NodePath::set_sz().

bool CollisionNode::has_cull_callback (   )  const [virtual]
 

Should be overridden by derived classes to return true if cull_callback() has been defined.

Otherwise, returns false to indicate cull_callback() does not need to be called for this node during the cull traversal.

Reimplemented from PandaNode.

Definition at line 227 of file collisionNode.cxx.

bool PandaNode::has_effect (  TypeHandle  type  )  const [inline, inherited]
 

Returns true if there is a render effect of the indicated type defined on this node, or false if there is not.

Definition at line 686 of file pandaNode.I.

Referenced by NodePath::set_render_mode_wireframe().

bool Namable::has_name (   )  const [inline, inherited]
 

Returns true if the Namable has a nonempty name set, false if the name is empty.

Definition at line 97 of file namable.I.

References Namable::get_name(), and INLINE.

Referenced by EggGroupUniquifier::EggGroupUniquifier(), Texture::read(), and Texture::Texture().

bool PandaNode::has_selective_visibility (   )  const [virtual, inherited]
 

Should be overridden by derived classes to return true if this kind of node has some restrictions on the set of children that should be rendered.

Node with this property include LODNodes, SwitchNodes, and SequenceNodes.

If this function returns true, get_first_visible_child() and get_next_visible_child() will be called to walk through the list of children during cull, instead of iterating through the entire list. This method is called after cull_callback(), so cull_callback() may be responsible for the decisions as to which children are visible at the moment.

Reimplemented in SelectiveChildNode.

Definition at line 918 of file pandaNode.cxx.

References PandaNode::find_parent(), nassertr, and NULL.

Referenced by CullTraverser::get_bounds_inner_viz_state().

bool PandaNode::has_single_child_visibility (   )  const [virtual, inherited]
 

Should be overridden by derived classes to return true if this kind of node has the special property that just one of its children is visible at any given time, and furthermore that the particular visible child can be determined without reference to any external information (such as a camera).

At present, only SequenceNodes and SwitchNodes fall into this category.

If this function returns true, get_visible_child() can be called to return the index of the currently-visible child.

Reimplemented in SequenceNode, and SwitchNode.

Definition at line 999 of file pandaNode.cxx.

References PandaNode::_cycler, PandaNode::get_child(), PandaNode::get_child_sort(), PandaNode::get_num_children(), nassertv, PT, and PandaNode::remove_child().

bool CollisionNode::has_velocity (   )  const [inline]
 

Returns true if the node has an associated velocity, false otherwise.

See set_velocity().

Definition at line 267 of file collisionNode.I.

Referenced by combine_with(), and get_solid().

void CollisionNode::init_type (  void   )  [inline, static]
 

Reimplemented from PandaNode.

Definition at line 123 of file collisionNode.h.

bool BoundedObject::is_bound_stale (   )  const [inline, inherited]
 

Returns true if the bound is currently marked stale and will be recomputed the next time get_bound() is called.

This function is defined up at the top of this file, because several of the inline functions below reference it.

Definition at line 217 of file boundedObject.I.

References BoundedObject::_cycler, and INLINE.

Referenced by BoundedObject::~BoundedObject().

bool TypedObject::is_exact_type (  TypeHandle  handle  )  const [inline, inherited]
 

Returns true if the current object is the indicated type exactly.

Definition at line 101 of file typedObject.I.

Referenced by PT(), and xform().

bool BoundedObject::is_final (   )  const [inline, inherited]
 

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().

Definition at line 280 of file boundedObject.I.

bool PandaNode::is_geom_node (   )  const [virtual, inherited]
 

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.

Reimplemented in GeomNode.

Definition at line 1624 of file pandaNode.cxx.

References PandaNode::detach(), NodePathComponent::get_node(), NodePathComponent::is_top_node(), nassertv, NULL, and NodePathComponent::set_next().

Referenced by CullTraverser::get_bounds_inner_viz_state(), NodePath::get_transparency(), PT(), and NodePath::set_transparency().

bool TypedObject::is_of_type (  TypeHandle  handle  )  const [inline, inherited]
 

Returns true if the current object is or derives from the indicated type.

Definition at line 86 of file typedObject.I.

Referenced by EggMaterialCollection::collapse_equivalent_materials(), EggTextureCollection::collapse_equivalent_textures(), DeferredNodeProperty::compose(), AnimBundleMaker::create_s_channel(), CharacterMaker::create_slider(), ProjectionScreen::cull_callback(), DataNode::define_output(), EggNode::determine_draw_order(), CharacterMaker::egg_to_index(), EggGroupUniquifier::EggGroupUniquifier(), EggPoolUniquifier::EggPoolUniquifier(), EggGroupNode::find_textures(), StaticTextFont::get_glyph(), EggMaterialCollection::insert_materials(), EggTextureCollection::insert_textures(), CharacterJoint::make_copy(), PT(), EggGroupNode::r_flatten_transforms(), EggGroupNode::r_transform_vertices(), EggGroupNode::recompute_polygon_normals(), CollisionLevelState::reserve(), PandaFramework::reset_frame_rate(), PandaFramework::set_texture(), EggGroupNode::steal_children(), and DataGraphTraverser::traverse().

void PandaNode::ls (  ostream &  out,
int  indent_level
)  const [inline, inherited]
 

Lists all the nodes at and below the current path hierarchically.

Definition at line 893 of file pandaNode.I.

Referenced by PGEntry::erase().

PandaNode * CollisionNode::make_copy (  void   )  const [virtual]
 

Returns a newly-allocated Node that is a shallow copy of this one.

It will be a different Node pointer, but its internal data may or may not be shared with that of the original Node.

Reimplemented from PandaNode.

Definition at line 103 of file collisionNode.cxx.

References nassertv.

TypedWritable * CollisionNode::make_from_bam (  const FactoryParams &  params  )  [static, protected]
 

This function is called by the BamReader's factory when a new object of type CollisionNode is encountered in the Bam file.

It should create the CollisionNode and extract its information from the file.

Reimplemented from PandaNode.

Definition at line 550 of file collisionNode.cxx.

bool BoundedObject::mark_bound_stale (   )  [inline, inherited]
 

Marks the current bounding volume as stale, so that it will be recomputed later.

This may have a cascading effect up to the root of all graphs of which the node is a part. Returns true if the setting was changed, or false if it was already marked stale (or if it is a static bounding volume).

Definition at line 162 of file boundedObject.I.

References BoundedObject::_cycler, BoundedObject::F_bound_stale, and INLINE.

Referenced by CollisionSphere::CollisionSphere(), GeomNode::combine_with(), CollisionPlane::get_normal(), PGItem::instance_to_state_def(), CollisionPlane::make_copy(), PGItem::set_active(), CollisionSphere::set_center(), TextNode::set_coordinate_system(), PandaNode::set_effect(), set_from_collide_mask(), GeomNode::set_geom_state(), CollisionRay::set_origin(), CollisionSegment::set_point_a(), CollisionSphere::test_intersection(), CollisionSegment::test_intersection(), CollisionRay::test_intersection(), and xform().

void CollisionNode::output (  ostream &  out  )  const [virtual]
 

Writes a brief description of the node to the indicated output stream.

This is invoked by the << operator. It may be overridden in derived classes to include some information relevant to the class.

Reimplemented from PandaNode.

Definition at line 319 of file collisionNode.cxx.

void PandaNode::parents_changed (   )  [protected, virtual, inherited]
 

Called after a scene graph update that either adds or remove parents from this node, this just provides a hook for derived PandaNode objects that need to update themselves based on the set of parents the node has.

Reimplemented in DataNode.

Definition at line 1820 of file pandaNode.cxx.

References PandaNode::_cycler, PandaNode::CData::_paths, PipelineCyclerBase::get_num_stages(), PipelineCyclerBase::is_stage_unique(), PipelineCyclerBase::release_write_stage(), and PipelineCycler< CData >::write_stage().

bool CollisionNode::preserve_name (   )  const [virtual]
 

Returns true if the node's name has extrinsic meaning and must be preserved across a flatten operation, false otherwise.

Reimplemented from PandaNode.

Definition at line 120 of file collisionNode.cxx.

References _solids.

void PandaNode::propagate_stale_bound (   )  [protected, virtual, inherited]
 

Called by BoundedObject::mark_bound_stale(), this should make sure that all bounding volumes that depend on this one are marked stale also.

Reimplemented from BoundedObject.

Definition at line 1690 of file pandaNode.cxx.

References PandaNode::_cycler, PandaNode::NodePathComponent, and PT.

void PandaNode::r_copy_children (  const PandaNode *  from,
PandaNode::InstanceMap &  inst_map
)  [protected, virtual, inherited]
 

This is called by r_copy_subgraph(); the copy has already been made of this particular node (and this is the copy); this function's job is to copy all of the children from the original.

Note that it includes the parameter inst_map, which is a map type, and is not (and cannot be) exported from PANDA.DLL. Thus, any derivative of PandaNode that is not also a member of PANDA.DLL *cannot* access this map, and probably should not even override this function.

Reimplemented in Character.

Definition at line 1925 of file pandaNode.cxx.

References PandaNode::_cycler, PandaNode::fix_path_lengths(), and PandaNode::get_generic_component().

PointerTo< PandaNode > PandaNode::r_copy_subgraph (  PandaNode::InstanceMap &  inst_map  )  const [protected, virtual, inherited]
 

This is the recursive implementation of copy_subgraph().

It returns a copy of the entire subgraph rooted at this node.

Note that it includes the parameter inst_map, which is a map type, and is not (and cannot be) exported from PANDA.DLL. Thus, any derivative of PandaNode that is not also a member of PANDA.DLL *cannot* access this map.

Definition at line 1884 of file pandaNode.cxx.

Referenced by PandaNode::steal_children().

BoundingVolume * CollisionNode::recompute_bound (   )  [protected, virtual]
 

Recomputes the dynamic bounding volume for this object.

This is the bounding volume for the node and all of its children, and normally does not need to be specialized beyond PandaNode; we specialize this function just so we can piggyback on it the setting the _net_collide_mask bits.

Reimplemented from PandaNode.

Definition at line 386 of file collisionNode.cxx.

References _solids.

BoundingVolume * CollisionNode::recompute_internal_bound (   )  [protected, virtual]
 

Called when needed to recompute the node's _internal_bound object.

Nodes that contain anything of substance should redefine this to do the right thing.

Reimplemented from PandaNode.

Definition at line 407 of file collisionNode.cxx.

References _solids.

int ReferenceCount::ref (   )  const [inline, inherited]
 

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.

The return value is the new reference count.

Definition at line 225 of file referenceCount.I.

Referenced by ClientDevice::ClientDevice(), EggGroupNode::find_textures(), EggGroupNode::r_apply_texmats(), EggGroupNode::r_flatten_transforms(), and EggGroupNode::reverse_vertex_ordering().

void CollisionNode::register_with_read_factory (  void   )  [static]
 

Tells the BamReader how to create objects of type CollisionNode.

Reimplemented from PandaNode.

Definition at line 482 of file collisionNode.cxx.

void PandaNode::remove_all_children (   )  [inherited]
 

Removes all the children from the node at once, including stashed children.

Definition at line 1465 of file pandaNode.cxx.

References PandaNode::get_type(), PandaNode::make_copy(), nassertr, NULL, and PT.

bool PandaNode::remove_child (  PandaNode *  child_node  )  [inherited]
 

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.

Definition at line 1157 of file pandaNode.cxx.

void PandaNode::remove_child (  int  n  )  [inherited]
 

Removes the nth child from the node.

Definition at line 1121 of file pandaNode.cxx.

References PandaNode::_cycler, PandaNode::children_changed(), BoundedObject::force_bound_stale(), nassertv, PT, and PandaNode::sever_connection().

Referenced by PandaNode::add_child(), PandaNode::cull_callback(), and PandaNode::has_single_child_visibility().

void CollisionNode::remove_solid (  int  n  )  [inline]
 

Removes the solid with the indicated index.

This will shift all subsequent indices down by one.

Definition at line 216 of file collisionNode.I.

void PandaNode::remove_stashed (  int  n  )  [inherited]
 

Removes the nth stashed child from the node.

Definition at line 1433 of file pandaNode.cxx.

Referenced by PandaNode::copy_subgraph(), and PandaNode::cull_callback().

bool PandaNode::replace_child (  PandaNode *  orig_child,
PandaNode *  new_child
)  [inherited]
 

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.

Definition at line 1203 of file pandaNode.cxx.

References PandaNode::add_child(), PandaNode::get_child(), and PandaNode::get_child_sort().

Referenced by SceneGraphReducer::consider_siblings().

bool PandaNode::safe_to_combine (   )  const [virtual, inherited]
 

Returns true if it is generally safe to combine this particular kind of PandaNode with other kinds of PandaNodes, adding children or whatever.

For instance, an LODNode should not be combined with any other PandaNode, because its set of children is meaningful.

Reimplemented in LODNode, ModelNode, SequenceNode, and SwitchNode.

Definition at line 601 of file pandaNode.cxx.

Referenced by SortByState::operator()().

bool PandaNode::safe_to_flatten (  void   )  const [virtual, inherited]
 

Returns true if it is generally safe to flatten out this particular kind of PandaNode by duplicating instances, false otherwise (for instance, a Camera cannot be safely flattened, because the Camera pointer itself is meaningful).

Reimplemented in AnimBundleNode, PartBundleNode, ParametricCurve, Camera, ModelNode, ForceNode, and PhysicalNode.

Definition at line 532 of file pandaNode.cxx.

bool PandaNode::safe_to_flatten_below (   )  const [virtual, inherited]
 

Returns true if a flatten operation may safely continue past this node, or false if it should drop all attributes here and stop.

Definition at line 618 of file pandaNode.cxx.

References NULL.

bool PandaNode::safe_to_modify_transform (   )  const [virtual, inherited]
 

Returns true if it is safe to automatically adjust the transform on this kind of node.

Usually, this is only a bad idea if the user expects to find a particular transform on the node.

ModelNodes with the preserve_transform flag set are presently the only kinds of nodes that should not have their transform even adjusted.

Reimplemented in ModelNode.

Definition at line 578 of file pandaNode.cxx.

bool PandaNode::safe_to_transform (   )  const [virtual, inherited]
 

Returns true if it is generally safe to transform this particular kind of PandaNode by calling the xform() method, false otherwise.

For instance, it's usually a bad idea to attempt to xform a Character.

Reimplemented in Character, ParametricCurve, RopeNode, Camera, and ModelNode.

Definition at line 551 of file pandaNode.cxx.

References AccumulatedAttribs::_transform, SceneGraphReducer::TT_transform, and PandaNode::xform().

void PandaNode::set_attrib (  const RenderAttrib *  attrib,
int  override = 0
)  [inline, inherited]
 

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.

Definition at line 565 of file pandaNode.I.

References PandaNode::_cycler, INLINE, and RenderState::make_empty().

Referenced by NodePath::clear_texture(), NodePath::get_mat(), NodePath::set_bin(), NodePath::set_color_off(), NodePath::set_pos_hpr(), NodePath::set_render_mode_filled(), and NodePath::set_scale().

void BoundedObject::set_bound (  BoundedObject::BoundingVolumeType  type  )  [inline, inherited]
 

Sets the type of the bounding volume that will be dynamically computed for this particular node.

Presently, this should only be BVT_dynamic_sphere.

Definition at line 115 of file boundedObject.I.

void PandaNode::set_bound (  const BoundingVolume &  volume  )  [inline, inherited]
 

Resets the internal bounding volume so that it is the indicated volume.

The external bounding volume as returned by get_bound() (which includes all of the node's children) will be adjusted to include this internal volume.

Reimplemented from BoundedObject.

Definition at line 995 of file pandaNode.I.

void PandaNode::set_bound (  BoundingVolumeType  type  )  [inline, inherited]
 

Sets the type of the external bounding volume that is placed around this node and all of its children.

Definition at line 972 of file pandaNode.I.

BoundingVolume * BoundedObject::set_bound_ptr (  BoundingVolume *  bound  )  [inline, protected, inherited]
 

Changes the _bound pointer.

To be used only internally by derived classes, usually in recompute_bound(). The return value is the same pointer passed in, as a convenience (it will now be reference counted).

Definition at line 340 of file boundedObject.I.

void CollisionNode::set_collide_geom (  bool  flag  )  [inline]
 

Sets the state of the "collide geom" flag for this CollisionNode.

Normally, this is false; when this is set true, the CollisionSolids in this node will test for collisions with actual renderable geometry, in addition to whatever CollisionSolids may be indicated by the from_collide_mask.

Setting this to true causes this to test *all* GeomNodes for collisions. It is an all-or-none thing; there is no way to collide with only some GeomNodes, as GeomNodes have no into_collide_mask.

Definition at line 157 of file collisionNode.I.

References _solids.

void CollisionNode::set_collide_mask (  CollideMask  mask  )  [inline]
 

Simultaneously sets both the "from" and "into" CollideMask values to the same thing.

Definition at line 34 of file collisionNode.I.

References _from_collide_mask, and INLINE.

void PandaNode::set_draw_mask (  DrawMask  mask  )  [inline, inherited]
 

Sets the hide/show bits of this particular node.

During the cull traversal, a node is not visited if none of its draw mask bits intersect with the camera's draw mask bits. These masks can be used to selectively hide and show different parts of the scene graph from different cameras that are otherwise viewing the same scene. See Camera::set_camera_mask().

Definition at line 922 of file pandaNode.I.

Referenced by CollisionNode(), NodePath::get_z(), NodePath::heads_up(), EggLoader::make_node(), and NodePath::set_pos().

void PandaNode::set_effect (  const RenderEffect *  effect  )  [inline, inherited]
 

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.

Definition at line 648 of file pandaNode.I.

References PandaNode::_cycler, INLINE, TransformState::make_identity(), BoundedObject::mark_bound_stale(), and PandaNode::transform_changed().

Referenced by NodePath::get_fog(), and NodePath::has_fog().

void PandaNode::set_effects (  const RenderEffects *  effects  )  [inline, inherited]
 

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().

Definition at line 789 of file pandaNode.I.

References PandaNode::_cycler, and INLINE.

void BoundedObject::set_final (  bool  flag  )  [inline, inherited]
 

Sets the "final" flag on this BoundedObject.

If this is true, than no bounding volume need be tested below it; a positive intersection with this 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.

Definition at line 256 of file boundedObject.I.

void CollisionNode::set_from_collide_mask (  CollideMask  mask  )  [inline]
 

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.

Definition at line 56 of file collisionNode.I.

References _into_collide_mask, and BoundedObject::mark_bound_stale().

Referenced by DeferredNodeProperty::compose().

void CollisionNode::set_into_collide_mask (  CollideMask  mask  )  [inline]
 

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.

Definition at line 77 of file collisionNode.I.

Referenced by DeferredNodeProperty::compose().

void Namable::set_name (  const string &  name  )  [inline, inherited]
 

Definition at line 69 of file namable.I.

References Namable::_name.

Referenced by BuilderBucket::BuilderBucket(), SceneGraphReducer::do_flatten_siblings(), Texture::read(), PandaNode::reparent(), and Texture::Texture().

void PandaNode::set_state (  const RenderState *  state  )  [inline, inherited]
 

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().

Definition at line 727 of file pandaNode.I.

Referenced by NodePath::get_key(), and GeomParticleRenderer::kill_particle().

void PandaNode::set_transform (  const TransformState *  transform  )  [inline, inherited]
 

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.

Definition at line 837 of file pandaNode.I.

Referenced by NodePath::get_child().

void CollisionNode::set_velocity (  const LVector3f &  vel  )  [virtual]
 

Indicates the instantaneous velocity of the node.

This is only meaningful for nodes that represent "colliders", that is, nodes added to a CollisionTraverser to be tested for collision into other objects.

The velocity vector represents the delta from this node's position last frame to its current position. The collision traverser automatically clears it after it has performed the traversal.

This velocity information is optional and, if available, is used by the collision traverser to help determine which walls the collider is actually intersecting with, and which it is simply passing by.

Reimplemented from PandaNode.

Definition at line 362 of file collisionNode.cxx.

void PandaNode::stash_child (  int  child_index  )  [inherited]
 

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().

Definition at line 1292 of file pandaNode.cxx.

References NULL.

bool PandaNode::stash_child (  PandaNode *  child_node  )  [inline, inherited]
 

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).

Definition at line 446 of file pandaNode.I.

Referenced by PandaNode::get_parent().

void PandaNode::steal_children (  PandaNode *  other  )  [inherited]
 

Moves all the children from the other node onto this node.

Definition at line 1504 of file pandaNode.cxx.

References PandaNode::_cycler, PandaNode::add_child(), PT, and PandaNode::r_copy_subgraph().

void ReferenceCount::test_ref_count_integrity (   )  const [inline, inherited]
 

Does some easy checks to make sure that the reference count isn't completely bogus.

Definition at line 328 of file referenceCount.I.

References INLINE.

Referenced by EggNode::determine_bin(), and ReferenceCount::~ReferenceCount().

void PandaNode::transform_changed (   )  [protected, virtual, inherited]
 

Called after the node's transform has been changed for any reason, this just provides a hook so derived classes can do something special in this case.

Reimplemented in ActorNode.

Definition at line 1856 of file pandaNode.cxx.

References PandaNode::_cycler, PandaNode::get_num_parents(), PandaNode::get_top_component(), NULL, and PT.

Referenced by PandaNode::set_effect().

int ReferenceCount::unref (   )  const [inline, inherited]
 

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 the new reference count.

Definition at line 293 of file referenceCount.I.

References INLINE.

Referenced by RenderState::determine_bin_index(), and RenderEffects::determine_show_bounds().

void PandaNode::unstash_child (  int  stashed_index  )  [inherited]
 

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.

Definition at line 1336 of file pandaNode.cxx.

bool PandaNode::unstash_child (  PandaNode *  child_node  )  [inline, inherited]
 

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).

Definition at line 486 of file pandaNode.I.

References PandaNode::_cycler, and INLINE.

void PandaNode::write (  ostream &  out,
int  indent_level
)  const [virtual, inherited]
 

Reimplemented in AnalogNode, ButtonNode, ClassicNurbsCurve, NurbsPPCurve, RopeNode, AmbientLight, DirectionalLight, LensNode, LightLensNode, LightNode, PlaneNode, PointLight, Spotlight, TextNode, ButtonThrower, and MouseWatcher.

Definition at line 1588 of file pandaNode.cxx.

Referenced by LightNode::as_light(), GeomNode::calc_tight_bounds(), and AnalogNode::~AnalogNode().

void CollisionNode::write_datagram (  BamWriter *  manager,
Datagram &  dg
)  [virtual]
 

Writes the contents of this object to the datagram for shipping out to a Bam file.

Reimplemented from PandaNode.

Definition at line 497 of file collisionNode.cxx.

void CollisionNode::xform (  const LMatrix4f &  mat  )  [virtual]
 

Transforms the contents of this node by the indicated matrix, if it means anything to do so.

For most kinds of nodes, this does nothing.

Reimplemented from PandaNode.

Definition at line 137 of file collisionNode.cxx.

References _solids, PandaNode::combine_with(), DCAST, get_class_type(), Namable::get_name(), TypedObject::is_exact_type(), BoundedObject::mark_bound_stale(), NULL, and PT.

Friends And Related Function Documentation

friend class PandaNode::Children [friend, inherited]
 

Reimplemented in GeomNode.

Definition at line 392 of file pandaNode.h.

Member Data Documentation

int CollisionNode::_flags [private]
 

Definition at line 105 of file collisionNode.h.

Referenced by cull_callback(), get_collide_geom(), get_from_collide_mask(), get_into_collide_mask(), get_last_pos_state(), and get_num_solids().

CollideMask CollisionNode::_from_collide_mask [private]
 

Definition at line 96 of file collisionNode.h.

Referenced by get_last_pos_state(), and set_collide_mask().

BoundedObject PandaNode::_internal_bound [protected, inherited]
 

Definition at line 213 of file pandaNode.h.

Referenced by PandaNode::clear_state().

CollideMask CollisionNode::_into_collide_mask [private]
 

Definition at line 97 of file collisionNode.h.

Referenced by get_last_pos_state(), and set_from_collide_mask().

Solids CollisionNode::_solids [private]
 

Definition at line 108 of file collisionNode.h.

Referenced by combine_with(), preserve_name(), recompute_bound(), recompute_internal_bound(), set_collide_geom(), and xform().

TypeHandle CollisionNode::_type_handle [static, private]
 

Reimplemented from PandaNode.

Definition at line 37 of file collisionNode.cxx.

LVector3f CollisionNode::_velocity [private]
 

Definition at line 98 of file collisionNode.h.

Referenced by cull_callback(), and get_solid().

TypedWritable *const TypedWritable::Null = (TypedWritable*)0L [static, inherited]
 

Definition at line 25 of file typedWritable.cxx.

Referenced by Child::complete_pointers(), Parent::complete_pointers(), Person::complete_pointers(), LoaderFileTypeBam::get_extension(), PartGroup::pick_channel_index(), BamReader::read_pointer(), and AnimGroup::write_datagram().

The documentation for this class was generated from the following files:
Generated on Fri May 2 00:48:32 2003 for Panda by doxygen1.3