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RopeNode Class Reference

This class draws a visible representation of the NURBS curve stored in its NurbsCurveEvaluator. More...

#include "ropeNode.h"

Inheritance diagram for RopeNode:
PandaNode TypedWritableReferenceCount Namable LinkedListNode TypedWritable ReferenceCount MemoryBase TypedObject MemoryBase MemoryBase

Public Types

enum  NormalMode { NM_none, NM_vertex }
 
enum  RenderMode { RM_thread, RM_tape, RM_billboard, RM_tube }
 
enum  UVMode { UV_none, UV_parametric, UV_distance, UV_distance2 }
 
- 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

 RopeNode (const string &name)
 
void clear_matrix ()
 Resets the node's matrix to identity. More...
 
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 ()
 
NurbsCurveEvaluatorget_curve () const
 Returns the curve represented by the RopeNode. More...
 
const LMatrix4get_matrix () const
 Returns the optional matrix which is used to transform each control vertex after it has been transformed into the RopeNode's coordinate space, but before the polygon vertices are generated. More...
 
NormalMode get_normal_mode () const
 Returns the kind of normals to generate for the rope. More...
 
int get_num_slices () const
 Returns the number of radial subdivisions to make if RenderMode is RM_tube. More...
 
int get_num_subdiv () const
 Returns the number of subdivisions per cubic segment to draw. More...
 
RenderMode get_render_mode () const
 Returns the method used to render the rope. More...
 
PN_stdfloat get_thickness () const
 Returns the thickness of the rope. More...
 
const LVector3get_tube_up () const
 Returns the normal vector used to control the "top" of the curve, when RenderMode is RM_tube. More...
 
virtual TypeHandle get_type () const
 
bool get_use_vertex_color () const
 Returns the "use vertex color" flag. More...
 
bool get_use_vertex_thickness () const
 Returns the "use vertex thickness" flag. More...
 
bool get_uv_direction () const
 Returns true if the rope runs down the U coordinate of the texture, or false if it runs down the V coordinate. More...
 
UVMode get_uv_mode () const
 Returns the algorithm to use to generate UV's for the rope. More...
 
PN_stdfloat get_uv_scale () const
 Returns the scaling factor to apply to generated UV's for the rope. More...
 
bool has_matrix () const
 Returns true if the node has a matrix set, false otherwise. 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 PandaNodemake_copy () const
 Returns a newly-allocated Node that is a shallow copy of this one. More...
 
virtual void output (ostream &out) const
 
void reset_bound (const NodePath &rel_to)
 Recomputes the bounding volume. More...
 
virtual bool safe_to_transform () const
 Returns true if it is generally safe to transform this particular kind of Node by calling the xform() method, false otherwise. More...
 
void set_curve (NurbsCurveEvaluator *curve)
 Sets the particular curve represented by the RopeNode. More...
 
void set_matrix (const LMatrix4 &matrix)
 Specifies an optional matrix which is used to transform each control vertex after it has been transformed into the RopeNode's coordinate space, but before the polygon vertices are generated. More...
 
void set_normal_mode (NormalMode normal_mode)
 Specifies the kind of normals to generate for the rope. More...
 
void set_num_slices (int num_slices)
 Specifies the number of radial subdivisions to make if RenderMode is RM_tube. More...
 
void set_num_subdiv (int num_subdiv)
 Specifies the number of subdivisions per cubic segment (that is, per unique knot value) to draw in a fixed uniform tesselation of the curve. More...
 
void set_render_mode (RenderMode render_mode)
 Specifies the method used to render the rope. More...
 
void set_thickness (PN_stdfloat thickness)
 Specifies the thickness of the rope, in pixels or in spatial units, depending on the render mode. More...
 
void set_tube_up (const LVector3 &tube_up)
 Specifies a normal vector, generally perpendicular to the main axis of the starting point of the curve, that controls the "top" of the curve, when RenderMode is RM_tube. More...
 
void set_use_vertex_color (bool flag)
 Sets the "use vertex color" flag. More...
 
void set_use_vertex_thickness (bool flag)
 Sets the "use vertex thickness" flag. More...
 
void set_uv_direction (bool u_dominant)
 Specify true to vary the U coordinate down the length of the rope, or false to vary the V coordinate. More...
 
void set_uv_mode (UVMode uv_mode)
 Specifies the algorithm to use to generate UV's for the rope. More...
 
void set_uv_scale (PN_stdfloat scale)
 Specifies an additional scaling factor to apply to generated UV's along the rope. More...
 
virtual void write (ostream &out, int indent_level=0) const
 
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...
 
- Public Member Functions inherited from PandaNode
 PandaNode (const string &name)
 
void add_child (PandaNode *child_node, int sort=0, Thread *current_thread=Thread::get_current_thread())
 Adds a new child to the node. More...
 
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 Lightas_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)
 Removes the render attribute of the given type from this node. More...
 
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())
 Resets this node to have no render effects. More...
 
void clear_state (Thread *current_thread=Thread::get_current_thread())
 Resets this node to leave the render state alone. More...
 
void clear_tag (const string &key, Thread *current_thread=Thread::get_current_thread())
 Removes the value defined for this key on this particular node. More...
 
void clear_transform (Thread *current_thread=Thread::get_current_thread())
 Resets the transform on this node to the identity transform. More...
 
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 PandaNodecombine_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
 Returns the number of nodes at and below this level. More...
 
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 PandaNodedupe_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
 Returns the bounding volume type set with set_bounds_type(). More...
 
PandaNodeget_child (int n, Thread *current_thread=Thread::get_current_thread()) const
 Returns the nth child node of this node. More...
 
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
 Returns an object that can be used to walk through the list of children of the node. More...
 
DrawMask get_draw_control_mask () const
 Returns the set of bits in draw_show_mask that are considered meaningful. More...
 
DrawMask get_draw_show_mask () const
 Returns the hide/show bits of this particular node. More...
 
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
 Returns the "into" collide mask for this node. More...
 
virtual CollideMask get_legal_collide_mask () const
 Returns the subset of CollideMask bits that may be set for this particular type of PandaNode. More...
 
int get_nested_vertices (Thread *current_thread=Thread::get_current_thread()) const
 Returns the total number of vertices that will be rendered by this node and all of its descendents. More...
 
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
 Returns the number of child nodes this node has. More...
 
int get_num_parents (Thread *current_thread=Thread::get_current_thread()) const
 Returns the number of parent nodes this node has. More...
 
int get_num_stashed (Thread *current_thread=Thread::get_current_thread()) const
 Returns the number of stashed nodes this node has. More...
 
PandaNodeget_parent (int n, Thread *current_thread=Thread::get_current_thread()) const
 Returns the nth parent node of this node. More...
 
Parents get_parents (Thread *current_thread=Thread::get_current_thread()) const
 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...
 
PandaNodeget_stashed (int n, Thread *current_thread=Thread::get_current_thread()) const
 Returns the nth stashed child of this node. More...
 
Stashed get_stashed (Thread *current_thread=Thread::get_current_thread()) const
 Returns an object that can be used to walk through the list of children of the node. More...
 
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...
 
string get_tag (const string &key, Thread *current_thread=Thread::get_current_thread()) const
 Retrieves the user-defined value that was previously set on this node for the particular key, if any. More...
 
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
 Returns true if there is a render attribute of the indicated type defined on this node, or false if there is not. More...
 
bool has_attrib (int slot) const
 Returns true if there is a render attribute of the indicated type defined on this node, or false if there is not. More...
 
bool has_dirty_prev_transform () const
 Returns true if this node has the _dirty_prev_transform flag set, which indicates its _prev_transform is different from its _transform value (in pipeline stage 0). More...
 
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. More...
 
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 string &key, Thread *current_thread=Thread::get_current_thread()) const
 Returns true if a value has been defined on this node for the particular key (even if that value is the empty string), or false if no value has been set. More...
 
bool has_tags () const
 Returns true if the node has any tags (or any Python tags) at all, false if it has none. More...
 
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
 Returns true if the bounding volume of this node is stale and will be implicitly recomputed at the next call to get_bounds(), or false if it is fresh and need not be recomputed. More...
 
virtual bool is_collision_node () const
 A simple downcast check. More...
 
bool is_final (Thread *current_thread=Thread::get_current_thread()) const
 Returns the current state of the "final" flag. More...
 
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
 Returns true if the node has been hidden to all cameras by clearing its overall bit. More...
 
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 (ostream &out, const string &separator="\n") const
 Writes a list of all the tag keys assigned to the node to the indicated stream. More...
 
void ls (ostream &out, int indent_level) const
 Lists all the nodes at and below the current path hierarchically. More...
 
 MAKE_SEQ (get_parents, get_num_parents, get_parent)
 
 MAKE_SEQ (get_children, get_num_children, get_child)
 
 MAKE_SEQ (get_stashed, get_num_stashed, get_stashed)
 
void mark_bounds_stale (Thread *current_thread=Thread::get_current_thread()) const
 Indicates that the bounding volume, or something that influences the bounding volume (or any of the other things stored in CData, like net_collide_mask), may have changed for this node, and that it must be recomputed. More...
 
void mark_internal_bounds_stale (Thread *current_thread=Thread::get_current_thread())
 Should be called by a derived class to mark the internal bounding volume stale, so that compute_internal_bounds() will be called when the bounding volume is next requested. More...
 
void prepare_scene (GraphicsStateGuardianBase *gsg, const RenderState *node_state)
 Walks through the scene graph beginning at this node, and does whatever initialization is required to render the scene properly with the indicated GSG. More...
 
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...
 
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())
 Sets the complete RenderEffects that will be applied this node. More...
 
void set_final (bool flag)
 Sets the "final" flag on this PandaNode. More...
 
void set_into_collide_mask (CollideMask mask)
 Sets the "into" CollideMask. More...
 
void set_overall_hidden (bool overall_hidden)
 Sets or clears the hidden flag. More...
 
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())
 Sets the complete RenderState that will be applied to all nodes at this level and below. More...
 
void set_tag (const string &key, const string &value, Thread *current_thread=Thread::get_current_thread())
 Associates a user-defined value with a user-defined key which is stored on the node. More...
 
void set_transform (const TransformState *transform, Thread *current_thread=Thread::get_current_thread())
 Sets the transform that will be applied to this node and below. More...
 
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...
 
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...
 
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 TypedWritableReferenceCount
 TypedWritableReferenceCount (const TypedWritableReferenceCount &copy)
 
virtual ReferenceCountas_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...
 
string encode_to_bam_stream () const
 Converts the TypedWritable object into a single stream of data using a BamWriter, and returns that data as a string string. More...
 
bool encode_to_bam_stream (string &data, BamWriter *writer=NULL) 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)
 
TypedObjectas_typed_object ()
 Returns the object, upcast (if necessary) to a TypedObject pointer. More...
 
const TypedObjectas_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...
 
void operator= (const TypedObject &copy)
 
- Public Member Functions inherited from ReferenceCount
int get_ref_count () const
 Returns the current reference count. More...
 
WeakReferenceListget_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 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...
 
void weak_ref (WeakPointerToVoid *ptv)
 Adds the indicated PointerToVoid as a weak reference to this object. More...
 
void weak_unref (WeakPointerToVoid *ptv)
 Removes the indicated PointerToVoid as a weak reference to this object. More...
 
- Public Member Functions inherited from Namable
 Namable (const string &initial_name="")
 
 Namable (const Namable &copy)
 
void clear_name ()
 Resets the Namable's name to empty. More...
 
const 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...
 
Namableoperator= (const Namable &other)
 
void output (ostream &out) const
 Outputs the Namable. More...
 
void set_name (const string &name)
 

Static Public Member Functions

static TypeHandle get_class_type ()
 
static int get_vertex_color_dimension ()
 Returns the numeric extended dimension in which the color components should be found. More...
 
static int get_vertex_thickness_dimension ()
 Returns the numeric extended dimension in which the thickness component should be found. More...
 
static void init_type ()
 
static void register_with_read_factory ()
 Tells the BamReader how to create objects of type RopeNode. More...
 
- Static Public Member Functions inherited from PandaNode
static DrawMask get_all_camera_mask ()
 Returns a DrawMask that is appropriate for rendering to all cameras. More...
 
static TypeHandle get_class_type ()
 
static DrawMask get_overall_bit ()
 Returns the special bit that, when specifically cleared in the node's DrawMask, indicates that the node is hidden to all cameras, regardless of the remaining DrawMask bits. More...
 
static void init_type ()
 
static PT (PandaNode) decode_from_bam_stream(const string &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(const string &data
 
- Static Public Member Functions inherited from TypedWritable
static bool decode_raw_from_bam_stream (TypedWritable *&ptr, ReferenceCount *&ref_ptr, const string &data, BamReader *reader=NULL)
 Reads the string created by a previous call to encode_to_bam_stream(), and extracts the single object on that string. 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
virtual LPoint3 bool const
TransformState Thread
current_thread = Thread::get_current_thread()) const
 
Threadcurrent_thread = Thread::get_current_thread()) const
 
virtual LPoint3 bool & found_any
 
virtual LPoint3max_point
 
static BamReaderreader = NULL)
 
virtual LPoint3 bool const
TransformState * 
transform
 
- Public Attributes inherited from TypedWritableReferenceCount
static BamReaderreader = NULL)
 
- Static Public Attributes inherited from TypedWritable
static TypedWritable *const Null = (TypedWritable*)0L
 

Detailed Description

This class draws a visible representation of the NURBS curve stored in its NurbsCurveEvaluator.

It automatically recomputes the curve every frame.

This is not related to NurbsCurve, CubicCurveseg or any of the ParametricCurve-derived objects in this module. It is a completely parallel implementation of NURBS curves, and will probably eventually replace the whole ParametricCurve class hierarchy.

Definition at line 38 of file ropeNode.h.

Member Function Documentation

void RopeNode::clear_matrix ( )
inline

Resets the node's matrix to identity.

See set_matrix().

Definition at line 443 of file ropeNode.I.

References LMatrix4f::ident_mat().

bool RopeNode::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 150 of file ropeNode.cxx.

References get_curve(), get_matrix(), WorkingNodePath::get_node_path(), get_num_subdiv(), get_render_mode(), and has_matrix().

NurbsCurveEvaluator * RopeNode::get_curve ( ) const
inline

Returns the curve represented by the RopeNode.

Definition at line 81 of file ropeNode.I.

Referenced by cull_callback().

const LMatrix4 & RopeNode::get_matrix ( ) const
inline

Returns the optional matrix which is used to transform each control vertex after it has been transformed into the RopeNode's coordinate space, but before the polygon vertices are generated.

Definition at line 470 of file ropeNode.I.

Referenced by cull_callback().

RopeNode::NormalMode RopeNode::get_normal_mode ( ) const
inline

Returns the kind of normals to generate for the rope.

This is only applicable when the RenderMode is set to RM_tube.

Definition at line 208 of file ropeNode.I.

int RopeNode::get_num_slices ( ) const
inline

Returns the number of radial subdivisions to make if RenderMode is RM_tube.

It is ignored in the other render modes. See set_num_slices().

Definition at line 343 of file ropeNode.I.

int RopeNode::get_num_subdiv ( ) const
inline

Returns the number of subdivisions per cubic segment to draw.

See set_num_subdiv().

Definition at line 310 of file ropeNode.I.

Referenced by cull_callback().

RopeNode::RenderMode RopeNode::get_render_mode ( ) const
inline

Returns the method used to render the rope.

See set_render_mode().

Definition at line 106 of file ropeNode.I.

Referenced by cull_callback().

PN_stdfloat RopeNode::get_thickness ( ) const
inline

Returns the thickness of the rope.

See set_thickness().

Definition at line 416 of file ropeNode.I.

const LVector3 & RopeNode::get_tube_up ( ) const
inline

Returns the normal vector used to control the "top" of the curve, when RenderMode is RM_tube.

See set_tube_up().

Definition at line 239 of file ropeNode.I.

bool RopeNode::get_use_vertex_color ( ) const
inline

Returns the "use vertex color" flag.

See set_use_vertex_color().

Definition at line 269 of file ropeNode.I.

bool RopeNode::get_use_vertex_thickness ( ) const
inline

Returns the "use vertex thickness" flag.

See set_use_vertex_thickness().

Definition at line 375 of file ropeNode.I.

bool RopeNode::get_uv_direction ( ) const
inline

Returns true if the rope runs down the U coordinate of the texture, or false if it runs down the V coordinate.

Definition at line 155 of file ropeNode.I.

RopeNode::UVMode RopeNode::get_uv_mode ( ) const
inline

Returns the algorithm to use to generate UV's for the rope.

Definition at line 130 of file ropeNode.I.

PN_stdfloat RopeNode::get_uv_scale ( ) const
inline

Returns the scaling factor to apply to generated UV's for the rope.

Definition at line 181 of file ropeNode.I.

int RopeNode::get_vertex_color_dimension ( )
inlinestatic

Returns the numeric extended dimension in which the color components should be found.

See NurbsCurveEvaluator::set_extended_vertex().

The color components will be expected at (n, n + 1, n + 2, n + 3).

Definition at line 285 of file ropeNode.I.

int RopeNode::get_vertex_thickness_dimension ( )
inlinestatic

Returns the numeric extended dimension in which the thickness component should be found.

See NurbsCurveEvaluator::set_extended_vertex().

Definition at line 388 of file ropeNode.I.

bool RopeNode::has_matrix ( ) const
inline

Returns true if the node has a matrix set, false otherwise.

See set_matrix().

Definition at line 456 of file ropeNode.I.

Referenced by cull_callback().

bool RopeNode::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 201 of file ropeNode.cxx.

PandaNode * RopeNode::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 107 of file ropeNode.cxx.

void RopeNode::register_with_read_factory ( )
static

Tells the BamReader how to create objects of type RopeNode.

Definition at line 932 of file ropeNode.cxx.

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

void RopeNode::reset_bound ( const NodePath rel_to)

Recomputes the bounding volume.

This is normally called automatically, but it must occasionally be called explicitly when the curve has changed properties outside of this node's knowledge.

Definition at line 241 of file ropeNode.cxx.

References Thread::get_current_thread(), Thread::get_pipeline_stage(), and PandaNode::mark_internal_bounds_stale().

bool RopeNode::safe_to_transform ( ) const
virtual

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

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

Reimplemented from PandaNode.

Definition at line 120 of file ropeNode.cxx.

void RopeNode::set_curve ( NurbsCurveEvaluator curve)
inline

Sets the particular curve represented by the RopeNode.

Definition at line 70 of file ropeNode.I.

void RopeNode::set_matrix ( const LMatrix4 matrix)
inline

Specifies an optional matrix which is used to transform each control vertex after it has been transformed into the RopeNode's coordinate space, but before the polygon vertices are generated.

Definition at line 430 of file ropeNode.I.

void RopeNode::set_normal_mode ( RopeNode::NormalMode  normal_mode)
inline

Specifies the kind of normals to generate for the rope.

This is only applicable when the RenderMode is set to RM_tube; in the other render modes, normals are never generated.

Definition at line 195 of file ropeNode.I.

void RopeNode::set_num_slices ( int  num_slices)
inline

Specifies the number of radial subdivisions to make if RenderMode is RM_tube.

It is ignored in the other render modes.

Increasing this number increases the roundness of a cross-section of the tube. The minimum value for a dimensional tube is 3; setting it to 2 will get you a thin piece of tape (which is similar to RM_billboard, except it won't rotate to face the camera).

Definition at line 329 of file ropeNode.I.

void RopeNode::set_num_subdiv ( int  num_subdiv)
inline

Specifies the number of subdivisions per cubic segment (that is, per unique knot value) to draw in a fixed uniform tesselation of the curve.

Definition at line 297 of file ropeNode.I.

void RopeNode::set_render_mode ( RopeNode::RenderMode  render_mode)
inline

Specifies the method used to render the rope.

The simplest is RM_thread, which just draws a one-pixel line segment.

Definition at line 94 of file ropeNode.I.

void RopeNode::set_thickness ( PN_stdfloat  thickness)
inline

Specifies the thickness of the rope, in pixels or in spatial units, depending on the render mode.

See set_render_mode().

The thickness may also be specified on a per-vertex basis. See set_use_vertex_thickness().

Definition at line 403 of file ropeNode.I.

void RopeNode::set_tube_up ( const LVector3 tube_up)
inline

Specifies a normal vector, generally perpendicular to the main axis of the starting point of the curve, that controls the "top" of the curve, when RenderMode is RM_tube.

This is used to orient the vertices that make up the tube. If this vector is too nearly parallel with the starting direction of the curve, there may be a tendency for the whole tube to gimble-lock around its primary axis.

Definition at line 226 of file ropeNode.I.

void RopeNode::set_use_vertex_color ( bool  flag)
inline

Sets the "use vertex color" flag.

When this is true, the R, G, B, A vertex color is assumed to be stored as the dimensions n + 0, n + 1, n + 2, n + 3, respectively, of the extended vertex values, where n is the value returned by get_vertex_color_dimension(). Use NurbsCurveEvaluator::set_extended_vertex() to set these values.

Definition at line 257 of file ropeNode.I.

void RopeNode::set_use_vertex_thickness ( bool  flag)
inline

Sets the "use vertex thickness" flag.

When this is true, the vertex thickness is assumed to be stored as the dimension get_vertex_thickness_dimension(), of the extended vertex values. Use NurbsCurveEvaluator::set_extended_vertex() to set these values.

In this mode, the overall thickness is also applied as a scale to the vertex thickness. Not all render modes support vertex thickness.

Definition at line 363 of file ropeNode.I.

void RopeNode::set_uv_direction ( bool  u_dominant)
inline

Specify true to vary the U coordinate down the length of the rope, or false to vary the V coordinate.

Definition at line 142 of file ropeNode.I.

void RopeNode::set_uv_mode ( RopeNode::UVMode  uv_mode)
inline

Specifies the algorithm to use to generate UV's for the rope.

Definition at line 118 of file ropeNode.I.

void RopeNode::set_uv_scale ( PN_stdfloat  uv_scale)
inline

Specifies an additional scaling factor to apply to generated UV's along the rope.

This scale factor is applied in whichever direction is along the rope, as specified by set_uv_direction().

Definition at line 169 of file ropeNode.I.

void RopeNode::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 943 of file ropeNode.cxx.

References BamWriter::write_cdata(), and PandaNode::write_datagram().


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