PlaneNode Class Reference

A node that contains a plane. More...

#include "planeNode.h"

Inheritance diagram for PlaneNode:

Public Types
enum	ClipEffect { CE_visible = 0x0001, CE_collision = 0x0002 }
Public Types inherited from PandaNode
enum	FancyBits {   FB_transform = 0x0001, FB_state = 0x0002, FB_effects = 0x0004, FB_tag = 0x0010,   FB_draw_mask = 0x0020, FB_cull_callback = 0x0040 }
typedef bool	SceneRootFunc(const PandaNode *)
enum	UnexpectedChange {   UC_parents = 0x001, UC_children = 0x002, UC_transform = 0x004, UC_state = 0x008,   UC_draw_mask = 0x010 }

Public Member Functions
	PlaneNode (const std::string &name, const LPlane &plane=LPlane())
virtual bool	cull_callback (CullTraverser *trav, CullTraverserData &data)
	This function will be called during the cull traversal to perform any additional operations that should be performed at cull time. More...
virtual TypeHandle	force_init_type ()
int	get_clip_effect () const
	Returns the clip_effect bits for this clip plane. More...
const LPlane &	get_plane () const
	Returns the plane represented by the PlaneNode. More...
int	get_priority () const
	Returns the priority associated with this clip plane. More...
virtual TypeHandle	get_type () const
PN_stdfloat	get_viz_scale () const
	Returns the size of the visual representation of the plane that is drawn if the PlaneNode is shown. More...
virtual bool	is_renderable () const
	Returns true if there is some value to visiting this particular node during the cull traversal for any camera, false otherwise. More...
virtual PandaNode *	make_copy () const
	Returns a newly-allocated Node that is a shallow copy of this one. More...
virtual void	output (std::ostream &out) const
void	set_clip_effect (int clip_effect)
	Specifies the sort of things this plane will actually clip (when it is used as a clip plane). More...
void	set_plane (const LPlane &plane)
	Sets the particular plane represented by the PlaneNode. More...
void	set_priority (int priority)
	Changes the relative importance of this PlaneNode (when it is used as a clip plane) relative to the other clip planes that are applied simultaneously. More...
void	set_viz_scale (PN_stdfloat viz_scale)
	Specifies the size of the visual representation of the plane that is drawn if the PlaneNode is shown. More...
virtual void	write_datagram (BamWriter *manager, Datagram &dg)
	Writes the contents of this object to the datagram for shipping out to a Bam file. More...
virtual void	xform (const LMatrix4 &mat)
	Transforms the contents of this PandaNode by the indicated matrix, if it means anything to do so. More...
Public Member Functions inherited from PandaNode
	PandaNode (const std::string &name)
void	add_child (PandaNode *child_node, int sort=0, Thread *current_thread=Thread::get_current_thread())
virtual void	add_for_draw (CullTraverser *trav, CullTraverserData &data)
	Adds the node's contents to the CullResult we are building up during the cull traversal, so that it will be drawn at render time. More...
void	add_stashed (PandaNode *child_node, int sort=0, Thread *current_thread=Thread::get_current_thread())
	Adds a new child to the node, directly as a stashed child. More...
void	adjust_draw_mask (DrawMask show_mask, DrawMask hide_mask, DrawMask clear_mask)
	Adjusts the hide/show bits of this particular node. More...
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. More...
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. More...
void	clear_attrib (TypeHandle type)
void	clear_attrib (int slot)
	Removes the render attribute of the given type from this node. More...
void	clear_bounds ()
	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. More...
void	clear_effect (TypeHandle type)
	Removes the render effect of the given type from this node. More...
void	clear_effects (Thread *current_thread=Thread::get_current_thread())
void	clear_state (Thread *current_thread=Thread::get_current_thread())
void	clear_tag (const std::string &key, Thread *current_thread=Thread::get_current_thread())
void	clear_transform (Thread *current_thread=Thread::get_current_thread())
void	clear_unexpected_change (unsigned int flags)
	Sets one or more of the PandaNode::UnexpectedChange bits off, indicating that the corresponding property may once again change on this node. More...
virtual PandaNode *	combine_with (PandaNode *other)
	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. More...
int	compare_tags (const PandaNode *other) const
	Returns a number less than 0, 0, or greater than 0, to indicate the similarity of tags between this node and the other one. More...
void	copy_all_properties (PandaNode *other)
	Copies the TransformState, RenderState, RenderEffects, tags, Python tags, and the show/hide state from the other node onto this one. More...
void	copy_children (PandaNode *other, Thread *current_thread=Thread::get_current_thread())
	Makes another instance of all the children of the other node, copying them to this node. More...
void	copy_tags (PandaNode *other)
	Copies all of the tags stored on the other node onto this node. More...
int	count_num_descendants () const
virtual	CPT (TransformState) calc_tight_bounds(LPoint3 &min_point
	CPT (RenderAttrib) get_attrib(TypeHandle type) const
	CPT (RenderAttrib) get_attrib(int slot) const
	CPT (RenderEffect) get_effect(TypeHandle type) const
	CPT (RenderState) get_state(Thread *current_thread
	CPT (RenderEffects) get_effects(Thread *current_thread
	CPT (TransformState) get_transform(Thread *current_thread
	CPT (TransformState) get_prev_transform(Thread *current_thread
	CPT (RenderAttrib) get_off_clip_planes(Thread *current_thread
	CPT (BoundingVolume) get_bounds(Thread *current_thread
	CPT (BoundingVolume) get_bounds(UpdateSeq &seq
	CPT (BoundingVolume) get_internal_bounds(Thread *current_thread
virtual PandaNode *	dupe_for_flatten () const
	This is similar to make_copy(), but it makes a copy for the specific purpose of flatten. More...
int	find_child (PandaNode *node, Thread *current_thread=Thread::get_current_thread()) const
	Returns the index of the indicated child node, if it is a child, or -1 if it is not. More...
int	find_parent (PandaNode *node, Thread *current_thread=Thread::get_current_thread()) const
	Returns the index of the indicated parent node, if it is a parent, or -1 if it is not. More...
int	find_stashed (PandaNode *node, Thread *current_thread=Thread::get_current_thread()) const
	Returns the index of the indicated stashed node, if it is a stashed child, or -1 if it is not. More...
BoundingVolume::BoundsType	get_bounds_type () const
PandaNode *	get_child (int n, Thread *current_thread=Thread::get_current_thread()) const
int	get_child_sort (int n, Thread *current_thread=Thread::get_current_thread()) const
	Returns the sort index of the nth child node of this node (that is, the number that was passed to add_child()). More...
Children	get_children (Thread *current_thread=Thread::get_current_thread()) const
DrawMask	get_draw_control_mask () const
DrawMask	get_draw_show_mask () const
int	get_fancy_bits (Thread *current_thread=Thread::get_current_thread()) const
	Returns the union of all of the enum FancyBits values corresponding to the various "fancy" attributes that are set on the node. More...
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. More...
int	get_internal_vertices (Thread *current_thread=Thread::get_current_thread()) const
CollideMask	get_into_collide_mask () const
virtual CollideMask	get_legal_collide_mask () const
int	get_nested_vertices (Thread *current_thread=Thread::get_current_thread()) const
CollideMask	get_net_collide_mask (Thread *current_thread=Thread::get_current_thread()) const
	Returns the union of all into_collide_mask() values set at CollisionNodes at this level and below. More...
DrawMask	get_net_draw_control_mask () const
	Returns the set of bits in get_net_draw_show_mask() that have been explicitly set via adjust_draw_mask(), rather than implicitly inherited. More...
DrawMask	get_net_draw_show_mask () const
	Returns the union of all draw_show_mask values–of renderable nodes only– at this level and below. More...
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. More...
int	get_num_children (Thread *current_thread=Thread::get_current_thread()) const
int	get_num_parents (Thread *current_thread=Thread::get_current_thread()) const
int	get_num_stashed (Thread *current_thread=Thread::get_current_thread()) const
size_t	get_num_tags () const
PandaNode *	get_parent (int n, Thread *current_thread=Thread::get_current_thread()) const
Parents	get_parents (Thread *current_thread=Thread::get_current_thread()) const
PandaNode *	get_stashed (int n, Thread *current_thread=Thread::get_current_thread()) const
Stashed	get_stashed (Thread *current_thread=Thread::get_current_thread()) const
int	get_stashed_sort (int n, Thread *current_thread=Thread::get_current_thread()) const
	Returns the sort index of the nth stashed node of this node (that is, the number that was passed to add_child()). More...
std::string	get_tag (const std::string &key, Thread *current_thread=Thread::get_current_thread()) const
std::string	get_tag_key (size_t i) const
void	get_tag_keys (vector_string &keys) const
	Fills the given vector up with the list of tags on this PandaNode. More...
unsigned int	get_unexpected_change (unsigned int flags) const
	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...
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. More...
virtual int	get_visible_child () const
	Returns the index number of the currently visible child of this node. More...
bool	has_attrib (TypeHandle type) const
bool	has_attrib (int slot) const
bool	has_dirty_prev_transform () const
bool	has_effect (TypeHandle type) const
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. More...
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). More...
bool	has_tag (const std::string &key, Thread *current_thread=Thread::get_current_thread()) const
bool	has_tags () const
virtual bool	is_ambient_light () const
	Returns true if this is an AmbientLight, false if it is not a light, or it is some other kind of light. More...
bool	is_bounds_stale () const
virtual bool	is_collision_node () const
	A simple downcast check. More...
bool	is_final (Thread *current_thread=Thread::get_current_thread()) const
virtual bool	is_geom_node () const
	A simple downcast check. More...
virtual bool	is_lod_node () const
	A simple downcast check. More...
bool	is_overall_hidden () const
bool	is_scene_root () const
	Returns true if this particular node is known to be the render root of some active DisplayRegion associated with the global GraphicsEngine, false otherwise. More...
bool	is_under_scene_root () const
	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. More...
void	list_tags (std::ostream &out, const std::string &separator="\n") const
	Writes a list of all the tag keys assigned to the node to the indicated stream. More...
void	ls (std::ostream &out, int indent_level) const
void	mark_bounds_stale (Thread *current_thread=Thread::get_current_thread()) const
void	mark_internal_bounds_stale (Thread *current_thread=Thread::get_current_thread())
void	prepare_scene (GraphicsStateGuardianBase *gsg, const RenderState *node_state)
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. More...
	PT (PandaNode) copy_subgraph(Thread *current_thread
virtual void	r_prepare_scene (GraphicsStateGuardianBase *gsg, const RenderState *node_state, GeomTransformer &transformer, Thread *current_thread)
	The recursive implementation of prepare_scene(). More...
void	remove_all_children (Thread *current_thread=Thread::get_current_thread())
	Removes all the children from the node at once, including stashed children. More...
void	remove_child (int child_index, Thread *current_thread=Thread::get_current_thread())
	Removes the nth child from the node. More...
bool	remove_child (PandaNode *child_node, Thread *current_thread=Thread::get_current_thread())
	Removes the indicated child from the node. More...
void	remove_stashed (int child_index, Thread *current_thread=Thread::get_current_thread())
	Removes the nth stashed child from the node. More...
bool	replace_child (PandaNode *orig_child, PandaNode *new_child, Thread *current_thread=Thread::get_current_thread())
	Searches for the orig_child node in the node's list of children, and replaces it with the new_child instead. More...
void	replace_node (PandaNode *other)
	Inserts this node into the scene graph in place of the other one, and removes the other node. More...
void	reset_prev_transform (Thread *current_thread=Thread::get_current_thread())
	Resets the transform that represents this node's "previous" position to the same as the current transform. More...
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 of compatible type, adding children or whatever. More...
virtual bool	safe_to_combine_children () const
	Returns true if it is generally safe to combine the children of this PandaNode with each other. More...
virtual bool	safe_to_flatten () const
	Returns true if it is generally safe to flatten out this particular kind of PandaNode by duplicating instances (by calling dupe_for_flatten()), false otherwise (for instance, a Camera cannot be safely flattened, because the Camera pointer itself is meaningful). More...
virtual bool	safe_to_flatten_below () const
	Returns true if a flatten operation may safely continue past this node, or false if nodes below this node may not be molested. More...
virtual bool	safe_to_modify_transform () const
	Returns true if it is safe to automatically adjust the transform on this kind of node. More...
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. More...
void	set_attrib (const RenderAttrib *attrib, int override=0)
	Adds the indicated render attribute to the scene graph on this node. More...
void	set_bound (const BoundingVolume *volume)
	Deprecated. More...
void	set_bounds (const BoundingVolume *volume)
	Resets the bounding volume so that it is the indicated volume. More...
void	set_bounds_type (BoundingVolume::BoundsType bounds_type)
	Specifies the desired type of bounding volume that will be created for this node. More...
void	set_effect (const RenderEffect *effect)
	Adds the indicated render effect to the scene graph on this node. More...
void	set_effects (const RenderEffects *effects, Thread *current_thread=Thread::get_current_thread())
void	set_final (bool flag)
void	set_into_collide_mask (CollideMask mask)
void	set_overall_hidden (bool overall_hidden)
void	set_prev_transform (const TransformState *transform, Thread *current_thread=Thread::get_current_thread())
	Sets the transform that represents this node's "previous" position, one frame ago, for the purposes of detecting motion for accurate collision calculations. More...
void	set_state (const RenderState *state, Thread *current_thread=Thread::get_current_thread())
void	set_tag (const std::string &key, const std::string &value, Thread *current_thread=Thread::get_current_thread())
void	set_transform (const TransformState *transform, Thread *current_thread=Thread::get_current_thread())
void	set_unexpected_change (unsigned int flags)
	Sets one or more of the PandaNode::UnexpectedChange bits on, indicating that the corresponding property should not change again on this node. More...
bool	stash_child (PandaNode *child_node, Thread *current_thread=Thread::get_current_thread())
	Stashes the indicated child node. More...
void	stash_child (int child_index, Thread *current_thread=Thread::get_current_thread())
	Stashes the indicated child node. More...
void	steal_children (PandaNode *other, Thread *current_thread=Thread::get_current_thread())
	Moves all the children from the other node onto this node. More...
bool	unstash_child (PandaNode *child_node, Thread *current_thread=Thread::get_current_thread())
	Returns the indicated stashed node to normal child status. More...
void	unstash_child (int stashed_index, Thread *current_thread=Thread::get_current_thread())
	Returns the indicated stashed node to normal child status. More...
virtual void	update_bam_nested (BamWriter *manager)
	Called by the BamWriter when this object has not itself been modified recently, but it should check its nested objects for updates. More...
virtual void	write (std::ostream &out, int indent_level) const
void	write_recorder (BamWriter *manager, Datagram &dg)
	This method is provided for the benefit of classes (like MouseRecorder) that inherit from PandaMode and also RecorderBase. More...
Public Member Functions inherited from TypedWritableReferenceCount
	TypedWritableReferenceCount (const TypedWritableReferenceCount &copy)
virtual ReferenceCount *	as_reference_count ()
	Returns the pointer cast to a ReferenceCount pointer, if it is in fact of that type. More...
void	operator= (const TypedWritableReferenceCount &copy)
Public Member Functions inherited from TypedWritable
	TypedWritable (const TypedWritable &copy)
virtual int	complete_pointers (TypedWritable **p_list, BamReader *manager)
	Receives an array of pointers, one for each time manager->read_pointer() was called in fillin(). More...
vector_uchar	encode_to_bam_stream () const
	Converts the TypedWritable object into a single stream of data using a BamWriter, and returns that data as a bytes object. More...
bool	encode_to_bam_stream (vector_uchar &data, BamWriter *writer=nullptr) const
	Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string. More...
virtual void	finalize (BamReader *manager)
	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. More...
UpdateSeq	get_bam_modified () const
	Returns the current bam_modified counter. More...
void	mark_bam_modified ()
	Increments the bam_modified counter, so that this object will be invalidated and retransmitted on any open bam streams. More...
void	operator= (const TypedWritable &copy)
virtual bool	require_fully_complete () const
	Some objects require all of their nested pointers to have been completed before the objects themselves can be completed. More...
Public Member Functions inherited from TypedObject
	TypedObject (const TypedObject &copy)=default
TypedObject *	as_typed_object ()
	Returns the object, upcast (if necessary) to a TypedObject pointer. More...
const TypedObject *	as_typed_object () const
	Returns the object, upcast (if necessary) to a TypedObject pointer. More...
int	get_best_parent_from_Set (const std::set< int > &) const
int	get_type_index () const
	Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. More...
bool	is_exact_type (TypeHandle handle) const
	Returns true if the current object is the indicated type exactly. More...
bool	is_of_type (TypeHandle handle) const
	Returns true if the current object is or derives from the indicated type. More...
TypedObject &	operator= (const TypedObject &copy)=default
Public Member Functions inherited from ReferenceCount
int	get_ref_count () const
WeakReferenceList *	get_weak_list () const
	Returns the WeakReferenceList associated with this ReferenceCount object. More...
bool	has_weak_list () const
	Returns true if this particular ReferenceCount object has a WeakReferenceList created, false otherwise. More...
void	local_object ()
	This function should be called, once, immediately after creating a new instance of some ReferenceCount-derived object on the stack. More...
void	ref () const
	Explicitly increments the reference count. More...
bool	ref_if_nonzero () const
	Atomically increases the reference count of this object if it is not zero. More...
bool	test_ref_count_integrity () const
	Does some easy checks to make sure that the reference count isn't completely bogus. More...
bool	test_ref_count_nonzero () const
	Does some easy checks to make sure that the reference count isn't zero, or completely bogus. More...
virtual bool	unref () const
	Explicitly decrements the reference count. More...
WeakReferenceList *	weak_ref ()
	Adds the indicated PointerToVoid as a weak reference to this object. More...
void	weak_unref ()
	Removes the indicated PointerToVoid as a weak reference to this object. More...
Public Member Functions inherited from Namable
	Namable (const std::string &initial_name="")
void	clear_name ()
	Resets the Namable's name to empty. More...
const std::string &	get_name () const
bool	has_name () const
	Returns true if the Namable has a nonempty name set, false if the name is empty. More...
void	output (std::ostream &out) const
	Outputs the Namable. More...
void	set_name (const std::string &name)

Static Public Member Functions
static TypeHandle	get_class_type ()
static UpdateSeq	get_sort_seq ()
	Returns a global sequence number that is incremented any time any PlaneNode in the world changes sort or priority. More...
static void	init_type ()
static void	register_with_read_factory ()
	Tells the BamReader how to create objects of type PlaneNode. More...
Static Public Member Functions inherited from PandaNode
static DrawMask	get_all_camera_mask ()
static TypeHandle	get_class_type ()
static DrawMask	get_overall_bit ()
static void	init_type ()
static	PT (PandaNode) decode_from_bam_stream(vector_uchar data
static void	register_with_read_factory ()
	Tells the BamReader how to create objects of type PandaNode. More...
static void	reset_all_prev_transform (Thread *current_thread=Thread::get_current_thread())
	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. More...
static void	set_scene_root_func (SceneRootFunc *func)
	This is used by the GraphicsEngine to hook in a pointer to the scene_root_func(), the function to determine whether the node is an active scene root. More...
Static Public Member Functions inherited from TypedWritableReferenceCount
static TypeHandle	get_class_type ()
static void	init_type ()
static	PT (TypedWritableReferenceCount) decode_from_bam_stream(vector_uchar data
Static Public Member Functions inherited from TypedWritable
static bool	decode_raw_from_bam_stream (TypedWritable *&ptr, ReferenceCount *&ref_ptr, vector_uchar data, BamReader *reader=nullptr)
	Reads the bytes created by a previous call to encode_to_bam_stream(), and extracts the single object on those bytes. More...
static TypeHandle	get_class_type ()
static void	init_type ()
Static Public Member Functions inherited from TypedObject
static TypeHandle	get_class_type ()
static void	init_type ()
	This function is declared non-inline to work around a compiler bug in g++ 2.96. More...
Static Public Member Functions inherited from ReferenceCount
static TypeHandle	get_class_type ()
static void	init_type ()
Static Public Member Functions inherited from Namable
static TypeHandle	get_class_type ()
static void	init_type ()

Additional Inherited Members
Public Attributes inherited from PandaNode
	clear_tag
	Removes the value defined for this key on this particular node. More...
virtual LPoint3 bool const TransformState Thread *	current_thread = Thread::get_current_thread()) const
Thread *	current_thread = Thread::get_current_thread()) const
virtual LPoint3 bool &	found_any
	get_all_camera_mask
	Returns a DrawMask that is appropriate for rendering to all cameras. More...
	get_bounds_type
	Returns the bounding volume type set with set_bounds_type(). More...
	get_child
	Returns the nth child node of this node. More...
	get_children
	Returns an object that can be used to walk through the list of children of the node. More...
	get_draw_control_mask
	Returns the set of bits in draw_show_mask that are considered meaningful. More...
	get_draw_show_mask
	Returns the hide/show bits of this particular node. More...
	get_effects
	get_internal_bounds
	get_internal_vertices
	get_into_collide_mask
	Returns the "into" collide mask for this node. More...
	get_legal_collide_mask
	Returns the subset of CollideMask bits that may be set for this particular type of PandaNode. More...
	get_nested_vertices
	get_num_children
	Returns the number of child nodes this node has. More...
	get_num_parents
	Returns the number of parent nodes this node has. More...
	get_num_stashed
	Returns the number of stashed nodes this node has. More...
	get_num_tags
	get_overall_bit
	get_parent
	Returns the nth parent node of this node. More...
	get_parents
	Returns an object that can be used to walk through the list of parents of the node, similar to get_children() and get_stashed(). More...
	get_prev_transform
	get_python_tags
	get_stashed
	Returns the nth stashed child of this node. More...
	get_state
	get_tag
	get_tag_key
	get_transform
	has_tag
	is_bounds_stale
	is_final
	Returns the current state of the "final" flag. More...
	is_overall_hidden
	Returns true if the node has been hidden to all cameras by clearing its overall bit. More...
virtual LPoint3 &	max_point
static BamReader *	reader = nullptr)
	set_effects
	Sets the complete RenderEffects that will be applied this node. More...
	set_final
	set_into_collide_mask
	Sets the "into" CollideMask. More...
	set_overall_hidden
	Sets or clears the hidden flag. More...
	set_state
	Sets the complete RenderState that will be applied to all nodes at this level and below. More...
	set_tag
	Associates a user-defined value with a user-defined key which is stored on the node. More...
	set_transform
	Sets the transform that will be applied to this node and below. More...
virtual LPoint3 bool const TransformState *	transform
Public Attributes inherited from TypedWritableReferenceCount
static BamReader *	reader = nullptr)
Public Attributes inherited from TypedObject
	get_type
Public Attributes inherited from ReferenceCount
	get_ref_count
	Returns the current reference count. More...
Public Attributes inherited from Namable
	get_name
	set_name
Static Public Attributes inherited from TypedWritable
static TypedWritable *const	Null = nullptr

Detailed Description

A node that contains a plane.

This is most often used as a clipping plane, but it can serve other purposes as well; whenever a plane is needed to be defined in some coordinate space in the world.

Definition at line 36 of file planeNode.h.

Member Function Documentation

cull_callback()

bool PlaneNode::cull_callback ( CullTraverser *  trav, CullTraverserData &  data  )

virtual

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.

Note that this function will *not* be called unless set_cull_callback() is called in the constructor of the derived class. It is necessary to call set_cull_callback() to indicated that we require cull_callback() to be called.

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 138 of file planeNode.cxx.

get_clip_effect()

int PlaneNode::get_clip_effect ( ) const

inline

Returns the clip_effect bits for this clip plane.

See set_clip_effect().

Definition at line 128 of file planeNode.I.

get_plane()

const LPlane & PlaneNode::get_plane ( ) const

inline

Returns the plane represented by the PlaneNode.

Definition at line 54 of file planeNode.I.

get_priority()

int PlaneNode::get_priority ( ) const

inline

Returns the priority associated with this clip plane.

See set_priority().

Definition at line 107 of file planeNode.I.

get_sort_seq()

UpdateSeq PlaneNode::get_sort_seq ( )

inlinestatic

Returns a global sequence number that is incremented any time any PlaneNode in the world changes sort or priority.

This is used by ClipPlaneAttrib to determine when it is necessary to re-sort its internal array of stages.

Definition at line 138 of file planeNode.I.

get_viz_scale()

PN_stdfloat PlaneNode::get_viz_scale ( ) const

inline

Returns the size of the visual representation of the plane that is drawn if the PlaneNode is shown.

Definition at line 78 of file planeNode.I.

is_renderable()

bool PlaneNode::is_renderable ( ) const

virtual

Returns true if there is some value to visiting this particular node during the cull traversal for any camera, false otherwise.

This will be used to optimize the result of get_net_draw_show_mask(), so that any subtrees that contain only nodes for which is_renderable() is false need not be visited.

Reimplemented from PandaNode.

Definition at line 158 of file planeNode.cxx.

make_copy()

PandaNode * PlaneNode::make_copy ( ) 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 102 of file planeNode.cxx.

register_with_read_factory()

void PlaneNode::register_with_read_factory ( )

static

Tells the BamReader how to create objects of type PlaneNode.

Definition at line 263 of file planeNode.cxx.

References BamReader::get_factory(), and Factory< Type >::register_factory().

Referenced by init_libpgraph().

set_clip_effect()

void PlaneNode::set_clip_effect ( int  clip_effect )

inline

Specifies the sort of things this plane will actually clip (when it is used as a clip plane).

This is a bitmask union of ClipEffect values. If it includes CE_visible, then it will clip visible geometry; if it includes CE_collision, then it will clip collision polygons. If it includes neither bit, it will still affect culling, but objects will either be wholly behind the clipping plane, or wholly present.

Definition at line 120 of file planeNode.I.

set_plane()

void PlaneNode::set_plane ( const LPlane &  plane )

inline

Sets the particular plane represented by the PlaneNode.

Definition at line 41 of file planeNode.I.

set_priority()

void PlaneNode::set_priority ( int  priority )

inline

Changes the relative importance of this PlaneNode (when it is used as a clip plane) relative to the other clip planes that are applied simultaneously.

The priority number is used to decide which of the requested clip planes are to be activated when more clip planes are requested than the hardware will support. The highest-priority n planes are selected for rendering.

This is similar to TextureStage::set_priority().

Definition at line 95 of file planeNode.I.

set_viz_scale()

void PlaneNode::set_viz_scale ( PN_stdfloat  viz_scale )

inline

Specifies the size of the visual representation of the plane that is drawn if the PlaneNode is shown.

Definition at line 64 of file planeNode.I.

write_datagram()

void PlaneNode::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 272 of file planeNode.cxx.

References Datagram::add_int32(), Datagram::add_uint8(), BamWriter::write_cdata(), and PandaNode::write_datagram().

xform()

void PlaneNode::xform ( const LMatrix4 &  mat )

virtual

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

For most kinds of PandaNodes, this does nothing.

Reimplemented from PandaNode.

Definition at line 111 of file planeNode.cxx.

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The documentation for this class was generated from the following files:

• panda/src/pgraph/planeNode.h
• panda/src/pgraph/planeNode.cxx
• panda/src/pgraph/planeNode.I