Panda3D
Public Types | Public Member Functions | Static Public Member Functions | Public Attributes | List of all members
RopeNode Class Reference

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

Inheritance diagram for RopeNode:
PandaNode TypedWritableReferenceCount Namable TypedWritable ReferenceCount TypedObject

Public Types

enum  NormalMode { NM_none = 0, NM_vertex = 1 }
 
enum  RenderMode { RM_thread = 0, RM_tape = 1, RM_billboard = 2, RM_tube = 3 }
 
enum  UVMode { UV_none = 0, UV_parametric = 1, UV_distance = 2, UV_distance2 = 3 }
 
- Public Types inherited from PandaNode
enum  FancyBits {
  FB_transform = 1, FB_state = 2, FB_effects = 4, FB_tag = 16,
  FB_draw_mask = 32, FB_cull_callback = 64
}
 
enum  UnexpectedChange {
  UC_parents = 1, UC_children = 2, UC_transform = 4, UC_state = 8,
  UC_draw_mask = 16
}
 

Public Member Functions

 __init__ (str name)
 
 clearMatrix ()
 Resets the node's matrix to identity. More...
 
NurbsCurveEvaluator getCurve ()
 Returns the curve represented by the RopeNode. More...
 
const LMatrix4 getMatrix ()
 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...
 
RopeNode::NormalMode getNormalMode ()
 Returns the kind of normals to generate for the rope. More...
 
int getNumSlices ()
 Returns the number of radial subdivisions to make if RenderMode is RM_tube. More...
 
int getNumSubdiv ()
 Returns the number of subdivisions per cubic segment to draw. More...
 
RopeNode::RenderMode getRenderMode ()
 Returns the method used to render the rope. More...
 
float getThickness ()
 Returns the thickness of the rope. More...
 
const LVector3 getTubeUp ()
 Returns the normal vector used to control the "top" of the curve, when RenderMode is RM_tube. More...
 
bool getUseVertexColor ()
 Returns the "use vertex color" flag. More...
 
bool getUseVertexThickness ()
 Returns the "use vertex thickness" flag. More...
 
bool getUvDirection ()
 Returns true if the rope runs down the U coordinate of the texture, or false if it runs down the V coordinate. More...
 
RopeNode::UVMode getUvMode ()
 Returns the algorithm to use to generate UV's for the rope. More...
 
float getUvScale ()
 Returns the scaling factor to apply to generated UV's for the rope. More...
 
bool hasMatrix ()
 Returns true if the node has a matrix set, false otherwise. More...
 
 resetBound (const NodePath rel_to)
 Recomputes the bounding volume. More...
 
 setCurve (NurbsCurveEvaluator curve)
 Sets the particular curve represented by the RopeNode. More...
 
 setMatrix (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...
 
 setNormalMode (RopeNode::NormalMode normal_mode)
 Specifies the kind of normals to generate for the rope. More...
 
 setNumSlices (int num_slices)
 Specifies the number of radial subdivisions to make if RenderMode is RM_tube. More...
 
 setNumSubdiv (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...
 
 setRenderMode (RopeNode::RenderMode render_mode)
 Specifies the method used to render the rope. More...
 
 setThickness (float thickness)
 Specifies the thickness of the rope, in pixels or in spatial units, depending on the render mode. More...
 
 setTubeUp (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...
 
 setUseVertexColor (bool flag)
 Sets the "use vertex color" flag. More...
 
 setUseVertexThickness (bool flag)
 Sets the "use vertex thickness" flag. More...
 
 setUvDirection (bool u_dominant)
 Specify true to vary the U coordinate down the length of the rope, or false to vary the V coordinate. More...
 
 setUvMode (RopeNode::UVMode uv_mode)
 Specifies the algorithm to use to generate UV's for the rope. More...
 
 setUvScale (float scale)
 Specifies an additional scaling factor to apply to generated UV's along the rope. More...
 
- Public Member Functions inherited from PandaNode
PandaNode __copy__ ()
 
object __deepcopy__ (object memo)
 
 __init__ (str name)
 
int __traverse__ (Visitproc visit, void arg)
 
 addChild (PandaNode child_node, int sort, Thread current_thread)
 Adds a new child to the node. More...
 
 addStashed (PandaNode child_node, int sort, Thread current_thread)
 Adds a new child to the node, directly as a stashed child. More...
 
 adjustDrawMask (DrawMask show_mask, DrawMask hide_mask, DrawMask clear_mask)
 Adjusts the hide/show bits of this particular node. More...
 
Light asLight ()
 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...
 
 clearAttrib (TypeHandle type)
 Removes the render attribute of the given type from this node. More...
 
 clearAttrib (int slot)
 Removes the render attribute of the given type from this node. More...
 
 clearBounds ()
 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...
 
 clearEffect (TypeHandle type)
 Removes the render effect of the given type from this node. More...
 
 clearEffects (Thread current_thread)
 Resets this node to have no render effects. More...
 
 clearPythonTag (object key)
 
 clearState (Thread current_thread)
 Resets this node to leave the render state alone. More...
 
 clearTag (str key, Thread current_thread)
 Removes the value defined for this key on this particular node. More...
 
 clearTransform (Thread current_thread)
 Resets the transform on this node to the identity transform. More...
 
 clearUnexpectedChange (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...
 
PandaNode combineWith (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 compareTags (const PandaNode other)
 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...
 
 copyAllProperties (PandaNode other)
 Copies the TransformState, RenderState, RenderEffects, tags, Python tags, and the show/hide state from the other node onto this one. More...
 
 copyChildren (PandaNode other, Thread current_thread)
 Makes another instance of all the children of the other node, copying them to this node. More...
 
PandaNode copySubgraph (Thread current_thread)
 Allocates and returns a complete copy of this PandaNode and the entire scene graph rooted at this PandaNode. More...
 
 copyTags (PandaNode other)
 Copies all of the tags stored on the other node onto this node. More...
 
int countNumDescendants ()
 Returns the number of nodes at and below this level. More...
 
int findChild (PandaNode node, Thread current_thread)
 Returns the index of the indicated child node, if it is a child, or -1 if it is not. More...
 
int findParent (PandaNode node, Thread current_thread)
 Returns the index of the indicated parent node, if it is a parent, or -1 if it is not. More...
 
int findStashed (PandaNode node, Thread current_thread)
 Returns the index of the indicated stashed node, if it is a stashed child, or -1 if it is not. More...
 
const RenderAttrib getAttrib (TypeHandle type)
 Returns the render attribute of the indicated type, if it is defined on the node, or NULL if it is not. More...
 
const RenderAttrib getAttrib (int slot)
 Returns the render attribute of the indicated type, if it is defined on the node, or NULL if it is not. More...
 
const BoundingVolume getBounds (Thread current_thread)
 Returns the external bounding volume of this node: a bounding volume that contains the user bounding volume, the internal bounding volume, and all of the children's bounding volumes. More...
 
const BoundingVolume getBounds (UpdateSeq seq, Thread current_thread)
 This flavor of get_bounds() return the external bounding volume, and also fills in seq with the bounding volume's current sequence number. More...
 
BoundingVolume::BoundsType getBoundsType ()
 Returns the bounding volume type set with set_bounds_type(). More...
 
PandaNode getChild (int n, Thread current_thread)
 Returns the nth child node of this node. More...
 
list getChildren ()
 
int getChildSort (int n, Thread current_thread)
 Returns the sort index of the nth child node of this node (that is, the number that was passed to add_child()). More...
 
DrawMask getDrawControlMask ()
 Returns the set of bits in draw_show_mask that are considered meaningful. More...
 
DrawMask getDrawShowMask ()
 Returns the hide/show bits of this particular node. More...
 
const RenderEffect getEffect (TypeHandle type)
 Returns the render effect of the indicated type, if it is defined on the node, or NULL if it is not. More...
 
const RenderEffects getEffects (Thread current_thread)
 Returns the complete RenderEffects that will be applied to this node. More...
 
int getFancyBits (Thread current_thread)
 Returns the union of all of the enum FancyBits values corresponding to the various "fancy" attributes that are set on the node. More...
 
const BoundingVolume getInternalBounds (Thread current_thread)
 Returns the node's internal bounding volume. More...
 
int getInternalVertices (Thread current_thread)
 Returns the total number of vertices that will be rendered by this particular node alone, not accounting for its children. More...
 
CollideMask getIntoCollideMask ()
 Returns the "into" collide mask for this node. More...
 
CollideMask getLegalCollideMask ()
 Returns the subset of CollideMask bits that may be set for this particular type of PandaNode. More...
 
int getNestedVertices (Thread current_thread)
 Returns the total number of vertices that will be rendered by this node and all of its descendents. More...
 
CollideMask getNetCollideMask (Thread current_thread)
 Returns the union of all into_collide_mask() values set at CollisionNodes at this level and below. More...
 
DrawMask getNetDrawControlMask ()
 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 getNetDrawShowMask ()
 Returns the union of all draw_show_mask values–of renderable nodes only– at this level and below. More...
 
int getNumChildren (Thread current_thread)
 Returns the number of child nodes this node has. More...
 
int getNumParents (Thread current_thread)
 Returns the number of parent nodes this node has. More...
 
int getNumStashed (Thread current_thread)
 Returns the number of stashed nodes this node has. More...
 
const RenderAttrib getOffClipPlanes (Thread current_thread)
 Returns a ClipPlaneAttrib which represents the union of all of the clip planes that have been turned off at this level and below. More...
 
PandaNode getParent (int n, Thread current_thread)
 Returns the nth parent node of this node. More...
 
list getParents ()
 
const TransformState getPrevTransform (Thread current_thread)
 Returns the transform that has been set as this node's "previous" position. More...
 
object getPythonTag (object key)
 
object getPythonTagKeys ()
 
object getPythonTags ()
 
PandaNode::Stashed getStashed (Thread current_thread)
 Returns an object that can be used to walk through the list of children of the node. More...
 
PandaNode getStashed (int n, Thread current_thread)
 Returns the nth stashed child of this node. More...
 
list getStashed ()
 
int getStashedSort (int n, Thread current_thread)
 Returns the sort index of the nth stashed node of this node (that is, the number that was passed to add_child()). More...
 
const RenderState getState (Thread current_thread)
 Returns the complete RenderState that will be applied to all nodes at this level and below, as set on this node. More...
 
str getTag (str key, Thread current_thread)
 Retrieves the user-defined value that was previously set on this node for the particular key, if any. More...
 
object getTagKeys ()
 
const TransformState getTransform (Thread current_thread)
 Returns the transform that has been set on this particular node. More...
 
unsigned int getUnexpectedChange (unsigned int flags)
 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...
 
bool hasAttrib (TypeHandle type)
 Returns true if there is a render attribute of the indicated type defined on this node, or false if there is not. More...
 
bool hasAttrib (int slot)
 Returns true if there is a render attribute of the indicated type defined on this node, or false if there is not. More...
 
bool hasDirtyPrevTransform ()
 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 hasEffect (TypeHandle type)
 Returns true if there is a render effect of the indicated type defined on this node, or false if there is not. More...
 
bool hasPythonTag (object key)
 
bool hasTag (str key, Thread current_thread)
 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 hasTags ()
 Returns true if the node has any tags (or any Python tags) at all, false if it has none. More...
 
bool isAmbientLight ()
 Returns true if this is an AmbientLight, false if it is not a light, or it is some other kind of light. More...
 
bool isBoundsStale ()
 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...
 
bool isCollisionNode ()
 A simple downcast check. More...
 
bool isFinal (Thread current_thread)
 Returns the current state of the "final" flag. More...
 
bool isGeomNode ()
 A simple downcast check. More...
 
bool isLodNode ()
 A simple downcast check. More...
 
bool isOverallHidden ()
 Returns true if the node has been hidden to all cameras by clearing its overall bit. More...
 
bool isSceneRoot ()
 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 isUnderSceneRoot ()
 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...
 
 listTags (Ostream out, str separator)
 Writes a list of all the tag keys assigned to the node to the indicated stream. More...
 
 ls (Ostream out, int indent_level)
 Lists all the nodes at and below the current path hierarchically. More...
 
PandaNode makeCopy ()
 Returns a newly-allocated PandaNode that is a shallow copy of this one. More...
 
 markBoundsStale (Thread current_thread)
 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...
 
 markInternalBoundsStale (Thread 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...
 
 output (Ostream out)
 
 prepareScene (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...
 
 removeAllChildren (Thread current_thread)
 Removes all the children from the node at once, including stashed children. More...
 
bool removeChild (PandaNode child_node, Thread current_thread)
 Removes the indicated child from the node. More...
 
 removeChild (int child_index, Thread current_thread)
 Removes the nth child from the node. More...
 
 removeStashed (int child_index, Thread current_thread)
 Removes the nth stashed child from the node. More...
 
bool replaceChild (PandaNode orig_child, PandaNode new_child, Thread current_thread)
 Searches for the orig_child node in the node's list of children, and replaces it with the new_child instead. More...
 
 replaceNode (PandaNode other)
 Inserts this node into the scene graph in place of the other one, and removes the other node. More...
 
 resetPrevTransform (Thread current_thread)
 Resets the transform that represents this node's "previous" position to the same as the current transform. More...
 
 setAttrib (const RenderAttrib attrib, int override)
 Adds the indicated render attribute to the scene graph on this node. More...
 
 setBound (const BoundingVolume volume)
 Deprecated. More...
 
 setBounds (const BoundingVolume volume)
 Resets the bounding volume so that it is the indicated volume. More...
 
 setBoundsType (BoundingVolume::BoundsType bounds_type)
 Specifies the desired type of bounding volume that will be created for this node. More...
 
 setEffect (const RenderEffect effect)
 Adds the indicated render effect to the scene graph on this node. More...
 
 setEffects (const RenderEffects effects, Thread current_thread)
 Sets the complete RenderEffects that will be applied this node. More...
 
 setFinal (bool flag)
 Sets the "final" flag on this PandaNode. More...
 
 setIntoCollideMask (CollideMask mask)
 Sets the "into" CollideMask. More...
 
 setOverallHidden (bool overall_hidden)
 Sets or clears the hidden flag. More...
 
 setPrevTransform (const TransformState transform, Thread 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...
 
 setPythonTag (object key, object value)
 
 setState (const RenderState state, Thread current_thread)
 Sets the complete RenderState that will be applied to all nodes at this level and below. More...
 
 setTag (str key, str value, Thread current_thread)
 Associates a user-defined value with a user-defined key which is stored on the node. More...
 
 setTransform (const TransformState transform, Thread current_thread)
 Sets the transform that will be applied to this node and below. More...
 
 setUnexpectedChange (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 stashChild (PandaNode child_node, Thread current_thread)
 Stashes the indicated child node. More...
 
 stashChild (int child_index, Thread current_thread)
 Stashes the indicated child node. More...
 
 stealChildren (PandaNode other, Thread current_thread)
 Moves all the children from the other node onto this node. More...
 
bool unstashChild (PandaNode child_node, Thread current_thread)
 Returns the indicated stashed node to normal child status. More...
 
 unstashChild (int stashed_index, Thread current_thread)
 Returns the indicated stashed node to normal child status. More...
 
 write (Ostream out, int indent_level)
 
- Public Member Functions inherited from TypedWritable
object __reduce__ ()
 
object __reduce_persist__ (object pickler)
 
VectorUchar encodeToBamStream ()
 Converts the TypedWritable object into a single stream of data using a BamWriter, and returns that data as a bytes object. More...
 
bool encodeToBamStream (VectorUchar data, BamWriter writer)
 Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string. More...
 
 fillin (DatagramIterator scan, BamReader manager)
 This internal function is intended to be called by each class's make_from_bam() method to read in all of the relevant data from the BamFile for the new object. More...
 
UpdateSeq getBamModified ()
 Returns the current bam_modified counter. More...
 
 markBamModified ()
 Increments the bam_modified counter, so that this object will be invalidated and retransmitted on any open bam streams. More...
 
- Public Member Functions inherited from TypedObject
TypeHandle getType ()
 
int getTypeIndex ()
 Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. More...
 
bool isExactType (TypeHandle handle)
 Returns true if the current object is the indicated type exactly. More...
 
bool isOfType (TypeHandle handle)
 Returns true if the current object is or derives from the indicated type. More...
 
- Public Member Functions inherited from ReferenceCount
int getRefCount ()
 Returns the current reference count. More...
 
 ref ()
 Explicitly increments the reference count. More...
 
bool testRefCountIntegrity ()
 Does some easy checks to make sure that the reference count isn't completely bogus. More...
 
bool testRefCountNonzero ()
 Does some easy checks to make sure that the reference count isn't zero, or completely bogus. More...
 
bool unref ()
 Explicitly decrements the reference count. More...
 
- Public Member Functions inherited from Namable
 __init__ (const Namable)
 
 __init__ (str initial_name)
 
 clearName ()
 Resets the Namable's name to empty. More...
 
str getName ()
 
bool hasName ()
 Returns true if the Namable has a nonempty name set, false if the name is empty. More...
 
 output (Ostream out)
 Outputs the Namable. More...
 
 setName (str name)
 

Static Public Member Functions

static TypeHandle getClassType ()
 
static int getVertexColorDimension ()
 Returns the numeric extended dimension in which the color components should be found. More...
 
static int getVertexThicknessDimension ()
 Returns the numeric extended dimension in which the thickness component should be found. More...
 
- Static Public Member Functions inherited from PandaNode
static PandaNode decodeFromBamStream (VectorUchar data, BamReader reader)
 Reads the bytes created by a previous call to encode_to_bam_stream(), and extracts and returns the single object on those bytes. More...
 
static DrawMask getAllCameraMask ()
 Returns a DrawMask that is appropriate for rendering to all cameras. More...
 
static TypeHandle getClassType ()
 
static DrawMask getOverallBit ()
 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 resetAllPrevTransform (Thread 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 Public Member Functions inherited from TypedWritableReferenceCount
static TypedWritableReferenceCount decodeFromBamStream (VectorUchar data, BamReader reader)
 Reads the bytes created by a previous call to encode_to_bam_stream(), and extracts and returns the single object on those bytes. More...
 
static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from TypedWritable
static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from TypedObject
static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from ReferenceCount
static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from Namable
static TypeHandle getClassType ()
 

Public Attributes

NurbsCurveEvaluator curve
 Returns the curve represented by the RopeNode. More...
 
const LMatrix4 matrix
 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...
 
RopeNode::NormalMode normal_mode
 Returns the kind of normals to generate for the rope. More...
 
int num_slices
 Returns the number of radial subdivisions to make if RenderMode is RM_tube. More...
 
int num_subdiv
 Returns the number of subdivisions per cubic segment to draw. More...
 
RopeNode::RenderMode render_mode
 Returns the method used to render the rope. More...
 
float thickness
 Returns the thickness of the rope. More...
 
const LVector3 tube_up
 Returns the normal vector used to control the "top" of the curve, when RenderMode is RM_tube. More...
 
bool use_vertex_color
 Returns the "use vertex color" flag. More...
 
bool use_vertex_thickness
 Returns the "use vertex thickness" flag. More...
 
bool uv_direction
 Returns true if the rope runs down the U coordinate of the texture, or false if it runs down the V coordinate. More...
 
RopeNode::UVMode uv_mode
 Returns the algorithm to use to generate UV's for the rope. More...
 
float uv_scale
 Returns the scaling factor to apply to generated UV's for the rope. More...
 
int vertex_color_dimension
 Returns the numeric extended dimension in which the color components should be found. More...
 
int vertex_thickness_dimension
 Returns the numeric extended dimension in which the thickness component should be found. More...
 
- Public Attributes inherited from PandaNode
DrawMask all_camera_mask
 Returns a DrawMask that is appropriate for rendering to all cameras. More...
 
bool bounds_stale
 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...
 
BoundingVolume::BoundsType bounds_type
 Returns the bounding volume type set with set_bounds_type(). More...
 
PandaNode::Children children
 Returns an object that can be used to walk through the list of children of the node. More...
 
DrawMask draw_control_mask
 Returns the set of bits in draw_show_mask that are considered meaningful. More...
 
DrawMask draw_show_mask
 Returns the hide/show bits of this particular node. More...
 
ConstPointerToRenderEffects effects
 Returns the complete RenderEffects that will be applied to this node. More...
 
bool final
 Returns the current state of the "final" flag. More...
 
ConstPointerToBoundingVolume internal_bounds
 Returns the node's internal bounding volume. More...
 
int internal_vertices
 Returns the total number of vertices that will be rendered by this particular node alone, not accounting for its children. More...
 
CollideMask into_collide_mask
 Returns the "into" collide mask for this node. More...
 
CollideMask legal_collide_mask
 Returns the subset of CollideMask bits that may be set for this particular type of PandaNode. More...
 
int nested_vertices
 Returns the total number of vertices that will be rendered by this node and all of its descendents. More...
 
DrawMask 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...
 
bool overall_hidden
 Returns true if the node has been hidden to all cameras by clearing its overall bit. More...
 
PandaNode::Parents 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...
 
ConstPointerToTransformState prev_transform
 Returns the transform that has been set as this node's "previous" position. More...
 
object python_tags
 
PandaNode::Stashed stashed
 Returns the nth stashed child of this node. More...
 
ConstPointerToRenderState state
 Returns the complete RenderState that will be applied to all nodes at this level and below, as set on this node. More...
 
String tags []
 
ConstPointerToTransformState transform
 Returns the transform that has been set on this particular node. More...
 
- Public Attributes inherited from TypedObject
TypeHandle type
 Returns the TypeHandle representing this object's type. More...
 
- Public Attributes inherited from ReferenceCount
int ref_count
 The current reference count. More...
 
- Public Attributes inherited from Namable
const String name
 

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.

Member Enumeration Documentation

◆ NormalMode

enum NormalMode
Enumerator
NM_none 

Don't generate normals.

NM_vertex 

Generate vertex (smooth-shaded) normals.

◆ RenderMode

enum RenderMode
Enumerator
RM_thread 

Render the rope as a one-pixel thread using a linestrip.

RM_tape 

Render the rope as a triangle strip oriented to be perpendicular to the tube_up vector.

RM_billboard 

Render the rope as a triangle strip oriented to be perpendicular to the view vector.

RM_tube 

Render the rope as a hollow tube extruded along its length.

◆ UVMode

enum UVMode
Enumerator
UV_none 

Don't generate UV's along the curve.

UV_parametric 

Generate UV's based on the parametric coordinates along the curve.

UV_distance 

Generate UV's in proportion to spatial distance along the curve, by using the distance function to compute the length of each segment.

UV_distance2 

As above, but don't bother to take the square root of each segment. The distance is then in proportion to the sum-of-squares of the segments along the rope. If the segments are similar in length, this approximates the proportion of UV_distance while avoiding hundreds of square root operations.

Member Function Documentation

◆ __init__()

__init__ ( str  name)

◆ clearMatrix()

clearMatrix ( )

Resets the node's matrix to identity.

See set_matrix().

◆ getClassType()

static TypeHandle getClassType ( )
static

◆ getCurve()

NurbsCurveEvaluator getCurve ( )

Returns the curve represented by the RopeNode.

◆ getMatrix()

const LMatrix4 getMatrix ( )

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.

◆ getNormalMode()

RopeNode::NormalMode getNormalMode ( )

Returns the kind of normals to generate for the rope.

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

◆ getNumSlices()

int getNumSlices ( )

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().

◆ getNumSubdiv()

int getNumSubdiv ( )

Returns the number of subdivisions per cubic segment to draw.

See set_num_subdiv().

◆ getRenderMode()

RopeNode::RenderMode getRenderMode ( )

Returns the method used to render the rope.

See set_render_mode().

◆ getThickness()

float getThickness ( )

Returns the thickness of the rope.

See set_thickness().

◆ getTubeUp()

const LVector3 getTubeUp ( )

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

See set_tube_up().

◆ getUseVertexColor()

bool getUseVertexColor ( )

Returns the "use vertex color" flag.

See set_use_vertex_color().

◆ getUseVertexThickness()

bool getUseVertexThickness ( )

Returns the "use vertex thickness" flag.

See set_use_vertex_thickness().

◆ getUvDirection()

bool getUvDirection ( )

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

◆ getUvMode()

RopeNode::UVMode getUvMode ( )

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

◆ getUvScale()

float getUvScale ( )

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

◆ getVertexColorDimension()

static int getVertexColorDimension ( )
static

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).

◆ getVertexThicknessDimension()

static int getVertexThicknessDimension ( )
static

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

See NurbsCurveEvaluator::set_extended_vertex().

◆ hasMatrix()

bool hasMatrix ( )

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

See set_matrix().

◆ resetBound()

resetBound ( 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.

◆ setCurve()

setCurve ( NurbsCurveEvaluator  curve)

Sets the particular curve represented by the RopeNode.

◆ setMatrix()

setMatrix ( 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.

◆ setNormalMode()

setNormalMode ( RopeNode::NormalMode  normal_mode)

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.

◆ setNumSlices()

setNumSlices ( int  num_slices)

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).

◆ setNumSubdiv()

setNumSubdiv ( 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.

◆ setRenderMode()

setRenderMode ( RopeNode::RenderMode  render_mode)

Specifies the method used to render the rope.

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

◆ setThickness()

setThickness ( float  thickness)

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().

◆ setTubeUp()

setTubeUp ( 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.

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.

◆ setUseVertexColor()

setUseVertexColor ( bool  flag)

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.

◆ setUseVertexThickness()

setUseVertexThickness ( bool  flag)

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.

◆ setUvDirection()

setUvDirection ( bool  u_dominant)

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

◆ setUvMode()

setUvMode ( RopeNode::UVMode  uv_mode)

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

◆ setUvScale()

setUvScale ( float  scale)

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().

Member Data Documentation

◆ curve

Returns the curve represented by the RopeNode.

◆ matrix

const LMatrix4 matrix

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.

◆ normal_mode

RopeNode::NormalMode normal_mode

Returns the kind of normals to generate for the rope.

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

◆ num_slices

int num_slices

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().

◆ num_subdiv

int num_subdiv

Returns the number of subdivisions per cubic segment to draw.

See set_num_subdiv().

◆ render_mode

RopeNode::RenderMode render_mode

Returns the method used to render the rope.

See set_render_mode().

◆ thickness

float thickness

Returns the thickness of the rope.

See set_thickness().

◆ tube_up

const LVector3 tube_up

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

See set_tube_up().

◆ use_vertex_color

bool use_vertex_color

Returns the "use vertex color" flag.

See set_use_vertex_color().

◆ use_vertex_thickness

bool use_vertex_thickness

Returns the "use vertex thickness" flag.

See set_use_vertex_thickness().

◆ uv_direction

bool uv_direction

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

◆ uv_mode

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

◆ uv_scale

float uv_scale

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

◆ vertex_color_dimension

int vertex_color_dimension

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).

◆ vertex_thickness_dimension

int vertex_thickness_dimension

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

See NurbsCurveEvaluator::set_extended_vertex().