Panda3D
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Interfaces with the SpeedTree library to render SpeedTree objects, especially trees, within the Panda3D scene graph. More...
#include "speedTreeNode.h"
Classes | |
class | InstanceList |
Public Member Functions | |
SpeedTreeNode (const string &name) | |
SpeedTreeNode (const SpeedTreeNode ©) | |
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... | |
bool | add_from_stf (const Filename &stf_filename, const LoaderOptions &options=LoaderOptions()) |
Opens and reads the named STF (SpeedTree Forest) file, and adds the SRT files named within as instances of this node. More... | |
bool | add_from_stf (istream &in, const Filename &pathname, const LoaderOptions &options=LoaderOptions(), Loader *loader=NULL) |
Reads text data from the indicated stream, which is understood to represent the named STF (SpeedTree Forest) file, and adds the SRT files named within as instances of this node. More... | |
void | add_instance (const STTree *tree, const STTransform &transform) |
Adds a new instance of the indicated tree at the indicated transform. More... | |
void | add_instances (const NodePath &root, const TransformState *transform=TransformState::make_identity()) |
Walks the scene graph beginning at root, looking for nested SpeedTreeNodes. More... | |
void | add_instances_from (const SpeedTreeNode *other) |
Adds all of the instances defined within the indicated SpeedTreeNode as instances of this node. More... | |
void | add_instances_from (const SpeedTreeNode *other, const TransformState *transform) |
Adds all of the instances defined within the indicated SpeedTreeNode as instances of this node, after applying the indicated scene-graph transform. More... | |
void | add_random_instances (const STTree *tree, int quantity, PN_stdfloat x_min, PN_stdfloat x_max, PN_stdfloat y_min, PN_stdfloat y_max, PN_stdfloat scale_min, PN_stdfloat scale_max, PN_stdfloat height_min, PN_stdfloat height_max, PN_stdfloat slope_min, PN_stdfloat slope_max, Randomizer &randomizer=Randomizer()) |
Creates a number of random instances of the indicated true, within the indicated range. More... | |
InstanceList & | add_tree (const STTree *tree) |
Adds a new tree for rendering. 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... | |
void | clear_terrain () |
Removes the terrain associated with the node. More... | |
virtual PandaNode * | combine_with (PandaNode *other) |
Collapses this node with the other node, if possible, and returns a pointer to the combined node, or NULL if the two nodes cannot safely be combined. More... | |
virtual void | compute_internal_bounds (CPT(BoundingVolume) &internal_bounds, int &internal_vertices, int pipeline_stage, Thread *current_thread) const |
Returns a newly-allocated BoundingVolume that represents the internal contents of the node. More... | |
int | count_total_instances () const |
Returns the total number of trees that will be rendered by this node, counting all instances of all trees. 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 () |
const InstanceList & | get_instance_list (int n) const |
Returns a list of transforms that corresponds to the instances at which the nth tree appears. More... | |
const InstanceList & | get_instance_list (const STTree *tree) const |
Returns a list of transforms that corresponds to the instances at which the indicated tree appears. More... | |
int | get_num_trees () const |
Returns the number of unique tree objects that have been added to the node. More... | |
STTerrain * | get_terrain () const |
Returns the terrain associated with the node, or NULL if there is no terrain. More... | |
double | get_time_delta () const |
Returns an offset that is to be added each frame to the global clock's frame_time for the purpose of animating the trees in this particular node. More... | |
const STTree * | get_tree (int n) const |
Returns the STTree pointer for the nth tree. More... | |
virtual TypeHandle | get_type () const |
bool | has_instance_list (const STTree *tree) const |
Returns true if the indicated tree has any instances within this node, false otherwise. More... | |
bool | has_terrain () const |
Returns true if a valid terrain has been associated with the node, 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... | |
bool | is_valid () const |
Returns true if the node is valid and ready to render, false otherwise. More... | |
virtual PandaNode * | make_copy () const |
Returns a newly-allocated Node that is a shallow copy of this one. More... | |
MAKE_SEQ (get_trees, get_num_trees, get_tree) | |
MAKE_SEQ (get_instance_lists, get_num_trees, get_instance_list) | |
InstanceList & | modify_instance_list (const STTree *tree) |
Returns a modifiable list of transforms that corresponds to the instances of this tree. More... | |
STTree * | modify_tree (int n) |
Returns a modifiable STTree pointer for the nth tree instance. More... | |
virtual void | output (ostream &out) const |
Writes a brief description of the node to the indicated output stream. More... | |
void | prepare_scene (GraphicsStateGuardianBase *gsgbase, const RenderState *net_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... | |
void | reload_config () |
Re-reads the current setting of all of the relevant config variables and applies them to this node. More... | |
void | remove_all_trees () |
Removes all instances of all trees from the node. More... | |
int | remove_tree (const STTree *tree) |
Removes all instances of the indicated tree. More... | |
void | set_terrain (STTerrain *terrain) |
Associated a terrain with the node. More... | |
void | set_time_delta (double delta) |
Specifies an offset that is to be added each frame to the global clock's frame_time for the purpose of animating the trees in this particular node. More... | |
void | set_wind (double strength, const LVector3 &direction) |
Specifies the overall wind strength and direction. More... | |
bool | setup_terrain (const Filename &terrain_file) |
A convenience function to set up terrain geometry by reading a terrain.txt file as defined by SpeedTree. More... | |
void | snap_to_terrain () |
Adjusts all the trees in this node so that their Z position matches the height of the terrain at their X, Y position. More... | |
virtual void | write (ostream &out, int indent_level) 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... | |
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PandaNode (const string &name) | |
void | add_child (PandaNode *child_node, int sort=0, Thread *current_thread=Thread::get_current_thread()) |
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 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 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()) |
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... | |
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 |
Returns the bounding volume type set with set_bounds_type(). More... | |
PandaNode * | get_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 |
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... | |
PandaNode * | get_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... | |
PandaNode * | get_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 |
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 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 |
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="\) 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 |
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 |
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()) |
Sets the complete RenderEffects that will be applied this node. More... | |
void | set_final (bool flag) |
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... | |
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TypedWritableReferenceCount (const TypedWritableReferenceCount ©) | |
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 ©) |
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TypedWritable (const TypedWritable ©) | |
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 ©) |
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... | |
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TypedObject (const TypedObject ©) | |
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... | |
void | operator= (const TypedObject ©) |
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int | get_ref_count () const |
Returns the current reference count. More... | |
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 | 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... | |
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Namable (const string &initial_name="") | |
Namable (const Namable ©) | |
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... | |
Namable & | operator= (const Namable &other) |
void | output (ostream &out) const |
Outputs the Namable. More... | |
void | set_name (const string &name) |
Static Public Member Functions | |
static bool | authorize (const string &license="") |
Make this call to initialized the SpeedTree API and verify the license. More... | |
static TypeHandle | get_class_type () |
static double | get_global_time_delta () |
Returns an offset that is to be added each frame to the global clock's frame_time for the purpose of animating the trees in all SpeedTreeNodes. More... | |
static void | init_type () |
static void | register_with_read_factory () |
Tells the BamReader how to create objects of type SpeedTreeNode. More... | |
static void | set_global_time_delta (double delta) |
Specifies an offset that is to be added each frame to the global clock's frame_time for the purpose of animating the trees in all SpeedTreeNodes. More... | |
static void | write_error (ostream &out) |
Writes the current SpeedTree error message to the indicated stream. More... | |
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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 () |
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... | |
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static TypeHandle | get_class_type () |
static void | init_type () |
static | PT (TypedWritableReferenceCount) decode_from_bam_stream(const string &data |
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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 () |
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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... | |
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static TypeHandle | get_class_type () |
static void | init_type () |
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static TypeHandle | get_class_type () |
static void | init_type () |
Friends | |
class | SpeedTreeNode::DrawCallback |
Additional Inherited Members | |
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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 } |
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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 |
virtual LPoint3 & | max_point |
static BamReader * | reader = NULL) |
virtual LPoint3 bool const TransformState * | transform |
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static BamReader * | reader = NULL) |
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static TypedWritable *const | Null = (TypedWritable*)0L |
Interfaces with the SpeedTree library to render SpeedTree objects, especially trees, within the Panda3D scene graph.
SpeedTree also includes some support for a simple terrain system, which is available here as well. SpeedTree's rather lame grass system is not presently exposed.
Definition at line 54 of file speedTreeNode.h.
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virtual |
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.
For most nodes other than GeomNodes, this is a do-nothing operation.
Reimplemented from PandaNode.
Definition at line 1116 of file speedTreeNode.cxx.
References CullTraverser::get_cull_handler(), prepare_scene(), and CullHandler::record_object().
Referenced by is_renderable().
bool SpeedTreeNode::add_from_stf | ( | const Filename & | stf_filename, |
const LoaderOptions & | options = LoaderOptions() |
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) |
Opens and reads the named STF (SpeedTree Forest) file, and adds the SRT files named within as instances of this node.
Returns true on success, false on failure.
Definition at line 438 of file speedTreeNode.cxx.
References VirtualFileSystem::close_read_file(), VirtualFileSystem::exists(), VirtualFileSystem::get_file(), VirtualFileSystem::get_global_ptr(), and VirtualFileSystem::resolve_filename().
Referenced by add_random_instances(), and LoaderFileTypeStf::supports_compressed().
bool SpeedTreeNode::add_from_stf | ( | istream & | in, |
const Filename & | pathname, | ||
const LoaderOptions & | options = LoaderOptions() , |
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Loader * | loader = NULL |
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) |
Reads text data from the indicated stream, which is understood to represent the named STF (SpeedTree Forest) file, and adds the SRT files named within as instances of this node.
Returns true on success, false on failure.
The pathname is used for reference only; if nonempty, it provides a search directory for named SRT files.
The Loader and LoaderOptions, if provided, are used to load the SRT files. If the Loader pointer is NULL, the default global Loader is used instead.
Definition at line 487 of file speedTreeNode.cxx.
References DSearchPath::append_directory(), NodePath::find(), Filename::from_os_specific(), Filename::get_dirname(), Loader::get_global_ptr(), get_num_trees(), get_tree(), NodePath::is_empty(), Filename::make_absolute(), NodePath::node(), Filename::resolve_filename(), and setup_terrain().
void SpeedTreeNode::add_instance | ( | const STTree * | tree, |
const STTransform & | transform | ||
) |
Adds a new instance of the indicated tree at the indicated transform.
Definition at line 295 of file speedTreeNode.cxx.
References add_instances().
Referenced by modify_instance_list(), and LoaderFileTypeSrt::supports_compressed().
void SpeedTreeNode::add_instances | ( | const NodePath & | root, |
const TransformState * | transform = TransformState::make_identity() |
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) |
Walks the scene graph beginning at root, looking for nested SpeedTreeNodes.
For each SpeedTreeNode found, adds all of the instances defined within that SpeedTreeNode as instances of this node, after applying the indicated scene-graph transform.
Definition at line 315 of file speedTreeNode.cxx.
References add_instances_from(), Thread::get_current_thread(), NodePath::get_transform(), NodePath::is_empty(), and NodePath::node().
Referenced by add_instance().
void SpeedTreeNode::add_instances_from | ( | const SpeedTreeNode * | other | ) |
Adds all of the instances defined within the indicated SpeedTreeNode as instances of this node.
Does not recurse to children.
Definition at line 329 of file speedTreeNode.cxx.
References SpeedTreeNode::InstanceList::add_instance(), SpeedTreeNode::InstanceList::get_instance(), get_instance_list(), SpeedTreeNode::InstanceList::get_num_instances(), get_num_trees(), and SpeedTreeNode::InstanceList::get_tree().
Referenced by add_instances().
void SpeedTreeNode::add_instances_from | ( | const SpeedTreeNode * | other, |
const TransformState * | transform | ||
) |
Adds all of the instances defined within the indicated SpeedTreeNode as instances of this node, after applying the indicated scene-graph transform.
Does not recurse to children.
Definition at line 353 of file speedTreeNode.cxx.
References SpeedTreeNode::InstanceList::add_instance(), add_random_instances(), SpeedTreeNode::InstanceList::get_instance(), get_instance_list(), SpeedTreeNode::InstanceList::get_num_instances(), get_num_trees(), and SpeedTreeNode::InstanceList::get_tree().
void SpeedTreeNode::add_random_instances | ( | const STTree * | tree, |
int | quantity, | ||
PN_stdfloat | x_min, | ||
PN_stdfloat | x_max, | ||
PN_stdfloat | y_min, | ||
PN_stdfloat | y_max, | ||
PN_stdfloat | scale_min, | ||
PN_stdfloat | scale_max, | ||
PN_stdfloat | height_min, | ||
PN_stdfloat | height_max, | ||
PN_stdfloat | slope_min, | ||
PN_stdfloat | slope_max, | ||
Randomizer & | randomizer = Randomizer() |
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) |
Creates a number of random instances of the indicated true, within the indicated range.
If a terrain is present, height_min and height_max restrict trees to the (x, y) positions that fall within the indicated terrain, and slope_min and slope_max restrict trees to the (x, y) positions that have a matching slope. If a terrain is not present, height_min and height_max specify a random range of Z heights, and slope_min and slope_max are ignored.
Definition at line 391 of file speedTreeNode.cxx.
References add_from_stf(), SpeedTreeNode::InstanceList::add_instance(), and Randomizer::random_real().
Referenced by add_instances_from().
SpeedTreeNode::InstanceList & SpeedTreeNode::add_tree | ( | const STTree * | tree | ) |
Adds a new tree for rendering.
Returns the InstanceList which can be used to add to the instances for this tree. If the tree has previously been added, returns the existing InstanceList.
Definition at line 157 of file speedTreeNode.cxx.
References STTree::get_fullpath(), STTree::get_tree(), STTree::is_valid(), and remove_tree().
Referenced by count_total_instances().
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virtual |
Applies whatever attributes are specified in the AccumulatedAttribs object (and by the attrib_types bitmask) to the vertices on this node, if appropriate.
If this node uses geom arrays like a GeomNode, the supplied GeomTransformer may be used to unify shared arrays across multiple different nodes.
This is a generalization of xform().
Reimplemented from PandaNode.
Definition at line 924 of file speedTreeNode.cxx.
References cull_callback().
Referenced by combine_with().
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static |
Make this call to initialized the SpeedTree API and verify the license.
If an empty string is passed for the license, the config variable speedtree-license is consulted. Returns true on success, false on failure. If this call is not made explicitly, it will be made implicitly the first time a SpeedTreeNode is created.
Definition at line 781 of file speedTreeNode.cxx.
References ordered_vector< Key, Compare, Vector >::begin(), ordered_vector< Key, Compare, Vector >::end(), STTree::get_fullpath(), STTree::get_tree(), SpeedTreeNode::InstanceList::get_tree(), and make_copy().
Referenced by set_wind(), and STTree::STTree().
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inline |
Removes the terrain associated with the node.
Definition at line 88 of file speedTreeNode.I.
References has_terrain(), and set_terrain().
Referenced by modify_tree().
Collapses this node with the other node, if possible, and returns a pointer to the combined node, or NULL if the two nodes cannot safely be combined.
The return value may be this, other, or a new node altogether.
This function is called from GraphReducer::flatten(), and need not deal with children; its job is just to decide whether to collapse the two nodes and what the collapsed node should look like.
Reimplemented from PandaNode.
Definition at line 889 of file speedTreeNode.cxx.
References apply_attribs_to_vertices(), PandaNode::combine_with(), get_terrain(), has_terrain(), and TypedObject::is_exact_type().
Referenced by make_copy().
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virtual |
Returns a newly-allocated BoundingVolume that represents the internal contents of the node.
Should be overridden by PandaNode classes that contain something internally.
Reimplemented from PandaNode.
Definition at line 1161 of file speedTreeNode.cxx.
References STTree::get_tree(), SpeedTreeNode::InstanceList::get_tree(), and output().
Referenced by prepare_scene().
int SpeedTreeNode::count_total_instances | ( | ) | const |
Returns the total number of trees that will be rendered by this node, counting all instances of all trees.
Definition at line 137 of file speedTreeNode.cxx.
References add_tree(), and SpeedTreeNode::InstanceList::get_num_instances().
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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 968 of file speedTreeNode.cxx.
References LMatrix4f::convert_mat(), Light::get_color(), Lens::get_coordinate_system(), SceneSetup::get_cs_transform(), LMatrix4f::get_data(), DirectionalLight::get_direction(), Lens::get_far(), ClockObject::get_frame_time(), ClockObject::get_global_clock(), CullTraverser::get_gsg(), GraphicsStateGuardian::get_internal_coordinate_system(), SceneSetup::get_lens(), Lens::get_near(), LightAttrib::get_num_on_lights(), LightAttrib::get_on_light(), NodePath::get_parent(), Light::get_priority(), Lens::get_projection_mat(), CullTraverser::get_scene(), SceneSetup::get_scene_root(), NodePath::get_transform(), TextureAttrib::has_all_off(), NodePath::is_empty(), TypedObject::is_of_type(), is_renderable(), NodePath::node(), and LVecBase3f::normalize().
Referenced by apply_attribs_to_vertices().
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inlinestatic |
Returns an offset that is to be added each frame to the global clock's frame_time for the purpose of animating the trees in all SpeedTreeNodes.
Also see get_time_delta().
Definition at line 162 of file speedTreeNode.I.
References SpeedTreeNode::InstanceList::operator<().
Referenced by set_global_time_delta().
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inline |
Returns a list of transforms that corresponds to the instances at which the nth tree appears.
Definition at line 62 of file speedTreeNode.I.
References modify_tree(), and ordered_vector< Key, Compare, Vector >::size().
Referenced by add_instances_from(), get_tree(), and has_instance_list().
const SpeedTreeNode::InstanceList & SpeedTreeNode::get_instance_list | ( | const STTree * | tree | ) | const |
Returns a list of transforms that corresponds to the instances at which the indicated tree appears.
You should ensure that has_instance_list() returns true before calling this method.
Definition at line 263 of file speedTreeNode.cxx.
References modify_instance_list().
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inline |
Returns the number of unique tree objects that have been added to the node.
This count does not include multiple instances of the same tree that appear in different transforms.
Definition at line 38 of file speedTreeNode.I.
References get_tree(), and ordered_vector< Key, Compare, Vector >::size().
Referenced by add_from_stf(), add_instances_from(), SpeedTreeNode::InstanceList::fillin(), and is_valid().
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inline |
Returns the terrain associated with the node, or NULL if there is no terrain.
Definition at line 110 of file speedTreeNode.I.
References set_time_delta().
Referenced by combine_with(), and has_terrain().
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inline |
Returns an offset that is to be added each frame to the global clock's frame_time for the purpose of animating the trees in this particular node.
Also see get_global_time_delta().
Definition at line 136 of file speedTreeNode.I.
References set_global_time_delta().
Referenced by set_time_delta().
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inline |
Returns the STTree pointer for the nth tree.
See get_num_trees().
Definition at line 49 of file speedTreeNode.I.
References get_instance_list(), and ordered_vector< Key, Compare, Vector >::size().
Referenced by add_from_stf(), SpeedTreeNode::InstanceList::fillin(), and get_num_trees().
bool SpeedTreeNode::has_instance_list | ( | const STTree * | tree | ) | const |
Returns true if the indicated tree has any instances within this node, false otherwise.
Definition at line 248 of file speedTreeNode.cxx.
References get_instance_list().
Referenced by remove_all_trees().
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Returns true if a valid terrain has been associated with the node, false otherwise.
Definition at line 99 of file speedTreeNode.I.
References get_terrain().
Referenced by clear_terrain(), and combine_with().
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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 1103 of file speedTreeNode.cxx.
References add_for_draw().
Referenced by cull_callback().
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inline |
Returns true if the node is valid and ready to render, false otherwise.
Note that this might not become false until after the first time the node is rendered.
Definition at line 25 of file speedTreeNode.I.
References get_num_trees().
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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 869 of file speedTreeNode.cxx.
References combine_with().
Referenced by authorize().
SpeedTreeNode::InstanceList & SpeedTreeNode::modify_instance_list | ( | const STTree * | tree | ) |
Returns a modifiable list of transforms that corresponds to the instances of this tree.
This is equivalent to add_tree().
Definition at line 284 of file speedTreeNode.cxx.
References add_instance().
Referenced by get_instance_list().
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inline |
Returns a modifiable STTree pointer for the nth tree instance.
Definition at line 75 of file speedTreeNode.I.
References clear_terrain(), and ordered_vector< Key, Compare, Vector >::size().
Referenced by get_instance_list().
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virtual |
Writes a brief description of the node to the indicated output stream.
This is invoked by the << operator. It may be overridden in derived classes to include some information relevant to the class.
Reimplemented from PandaNode.
Definition at line 1199 of file speedTreeNode.cxx.
References write_error().
Referenced by compute_internal_bounds().
void SpeedTreeNode::prepare_scene | ( | GraphicsStateGuardianBase * | gsgbase, |
const RenderState * | net_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.
It is not strictly necessary to call this, since the GSG will initialize itself when the scene is rendered, but this may take some of the overhead away from that process.
In particular, this will ensure that textures within the scene are loaded in texture memory, and display lists are built up from static geometry.
Definition at line 1145 of file speedTreeNode.cxx.
References compute_internal_bounds().
Referenced by add_for_draw().
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Tells the BamReader how to create objects of type SpeedTreeNode.
Definition at line 1822 of file speedTreeNode.cxx.
References BamReader::get_factory(), Factory< Type >::register_factory(), and write_datagram().
Referenced by write_error().
void SpeedTreeNode::reload_config | ( | ) |
Re-reads the current setting of all of the relevant config variables and applies them to this node.
This can be called after changing config settings, to make them apply to this particular node.
Definition at line 698 of file speedTreeNode.cxx.
References ConfigVariable::get_num_words(), and set_wind().
Referenced by snap_to_terrain().
void SpeedTreeNode::remove_all_trees | ( | ) |
Removes all instances of all trees from the node.
Definition at line 223 of file speedTreeNode.cxx.
References STTree::get_fullpath(), STTree::get_tree(), SpeedTreeNode::InstanceList::get_tree(), and has_instance_list().
Referenced by remove_tree().
int SpeedTreeNode::remove_tree | ( | const STTree * | tree | ) |
Removes all instances of the indicated tree.
Returns the number of instances removed.
Definition at line 192 of file speedTreeNode.cxx.
References STTree::get_fullpath(), SpeedTreeNode::InstanceList::get_num_instances(), STTree::get_tree(), and remove_all_trees().
Referenced by add_tree().
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inlinestatic |
Specifies an offset that is to be added each frame to the global clock's frame_time for the purpose of animating the trees in all SpeedTreeNodes.
Also see set_time_delta().
Definition at line 149 of file speedTreeNode.I.
References get_global_time_delta().
Referenced by get_time_delta().
void SpeedTreeNode::set_terrain | ( | STTerrain * | terrain | ) |
Associated a terrain with the node.
If the terrain has not already been loaded prior to this call, load_data() will be called immediately.
The terrain will be rendered using SpeedTree callbacks, and trees may be repositioned with a call to snap_to_terrain().
Definition at line 607 of file speedTreeNode.cxx.
References STTerrain::get_max_height(), STTerrain::get_min_height(), STTerrain::get_normal_map(), STTerrain::get_num_splat_layers(), STTerrain::get_splat_layer(), STTerrain::get_splat_layer_tiling(), STTerrain::get_splat_map(), STTerrain::is_valid(), STTerrain::load_data(), snap_to_terrain(), and Filename::to_os_specific().
Referenced by clear_terrain(), and setup_terrain().
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inline |
Specifies an offset that is to be added each frame to the global clock's frame_time for the purpose of animating the trees in this particular node.
Also see set_global_time_delta().
Definition at line 123 of file speedTreeNode.I.
References get_time_delta().
Referenced by get_terrain().
void SpeedTreeNode::set_wind | ( | double | strength, |
const LVector3 & | direction | ||
) |
Specifies the overall wind strength and direction.
Gusts are controlled internally.
Definition at line 764 of file speedTreeNode.cxx.
References authorize().
Referenced by reload_config().
bool SpeedTreeNode::setup_terrain | ( | const Filename & | terrain_file | ) |
A convenience function to set up terrain geometry by reading a terrain.txt file as defined by SpeedTree.
This file names the various map files that define the terrain, as well as defining parameters size as its size and color.
This method implicitly creates a STBasicTerrain object and passes it to set_terrain().
Definition at line 585 of file speedTreeNode.cxx.
References set_terrain().
Referenced by add_from_stf().
void SpeedTreeNode::snap_to_terrain | ( | ) |
Adjusts all the trees in this node so that their Z position matches the height of the terrain at their X, Y position.
Definition at line 661 of file speedTreeNode.cxx.
References SpeedTreeNode::InstanceList::get_instance(), SpeedTreeNode::InstanceList::get_num_instances(), STTransform::get_pos(), reload_config(), SpeedTreeNode::InstanceList::set_instance(), and STTransform::set_pos().
Referenced by set_terrain().
Writes the contents of this object to the datagram for shipping out to a Bam file.
Reimplemented from PandaNode.
Definition at line 1833 of file speedTreeNode.cxx.
References Datagram::add_uint32(), SpeedTreeNode::InstanceList::fillin(), SpeedTreeNode::InstanceList::get_tree(), DatagramIterator::get_uint32(), SpeedTreeNode::InstanceList::write_datagram(), and PandaNode::write_datagram().
Referenced by register_with_read_factory().
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Writes the current SpeedTree error message to the indicated stream.
Definition at line 1234 of file speedTreeNode.cxx.
References PandaNode::Children::get_child(), PandaNode::get_children(), GeomDrawCallbackData::get_gsg(), PandaNode::Children::get_num_children(), GraphicsStateGuardian::get_pipe(), STTree::get_tree(), SpeedTreeNode::InstanceList::get_tree(), ConfigVariableFilename::get_value(), TypedObject::is_of_type(), register_with_read_factory(), GeomDrawCallbackData::set_lost_state(), GeomVertexData::set_num_rows(), and Filename::to_os_specific().
Referenced by output(), and STTree::STTree().