A ProjectionScreen implements a simple system for projective texturing. More...
#include "projectionScreen.h"
Public Member Functions | |
| ProjectionScreen (const std::string &name="") | |
| void | clear_undist_lut () |
| Removes the distortion lookup table from the projector, if specified. 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 () |
| bool | get_auto_recompute () const |
| Returns the auto_recompute flag. More... | |
| const LColor & | get_frame_color () const |
| Returns the color the screen will be painted at the portions outside of the lens' frustum. More... | |
| bool | get_invert_uvs () const |
| Returns whether this screen is compensating for a graphics driver inverting the framebuffer image. More... | |
| const UpdateSeq & | get_last_screen () const |
| Returns an UpdateSeq corresponding to the last time a screen mesh was generated for the ProjectionScreen. More... | |
| const NodePath & | get_projector () const |
| Returns the NodePath to the LensNode that is to serve as the projector for this screen, or empty if no projector is associated. More... | |
| bool | get_texcoord_3d () const |
| See set_texcoord_3d(). More... | |
| std::string | get_texcoord_name () const |
| Returns the name of the texture coordinates that will be generated by this particular ProjectionScreen, as set by set_texcoord_name(). More... | |
| virtual TypeHandle | get_type () const |
| const PfmFile & | get_undist_lut () const |
| Returns the distortion lookup table provided via set_undist_lut(), if any. More... | |
| const LColor & | get_vignette_color () const |
| Returns the color the screen will be painted at the portions outside of the lens' frustum. More... | |
| bool | get_vignette_on () const |
| Returns true if vertex-based vignetting is on, false otherwise. More... | |
| bool | has_undist_lut () const |
| Returns true if a valid distortion lookup table was provided via set_undist_lut(), false otherwise. More... | |
| virtual PandaNode * | make_copy () const |
| Returns a newly-allocated Node that is a shallow copy of this one. More... | |
| PT (GeomNode) generate_screen(const NodePath &projector | |
| PT (PandaNode) make_flat_mesh(const NodePath &this_np | |
| void | recompute () |
| Recomputes all the UV's for geometry below the ProjectionScreen node, as if the texture were projected from the associated projector. More... | |
| bool | recompute_if_stale () |
| Calls recompute() only if the relative transform between the ProjectionScreen and the projector has changed, or if any other relevant property has changed. More... | |
| bool | recompute_if_stale (const NodePath &this_np) |
| Calls recompute() only if the relative transform between the ProjectionScreen and the projector has changed, or if any other relevant property has changed. More... | |
| void | regenerate_screen (const NodePath &projector, const std::string &screen_name, int num_x_verts, int num_y_verts, PN_stdfloat distance, PN_stdfloat fill_ratio) |
| Removes all the children from the ProjectionScreen node, and adds the newly generated child returned by generate_screen(). More... | |
| void | set_auto_recompute (bool auto_recompute) |
| Sets the auto_recompute flag. More... | |
| void | set_frame_color (const LColor &frame_color) |
| Specifies the color the screen will be painted at the portions outside of the lens' frustum; i.e. More... | |
| void | set_invert_uvs (bool invert_uvs) |
| Some OpenGL graphics drivers are known to invert the framebuffer image when they copy it to texture. More... | |
| void | set_projector (const NodePath &projector) |
| Specifies the LensNode that is to serve as the projector for this screen. More... | |
| void | set_texcoord_3d (bool texcoord_3d) |
| Set this true to force 3-D texture coordinates to be created for the geometry. More... | |
| void | set_texcoord_name (const std::string &texcoord_name) |
| Specifies the name of the texture coordinates that are generated by this particular ProjectionScreen. More... | |
| void | set_undist_lut (const PfmFile &undist_lut) |
| Applies a distortion lookup table to the projector. More... | |
| void | set_vignette_color (const LColor &vignette_color) |
| Specifies the color the screen will be painted at the portions outside of the lens' frustum; i.e. More... | |
| void | set_vignette_on (bool vignette_on) |
| Specifies whether vertex-based vignetting should be on. More... | |
 Public Member Functions inherited from PandaNode | |
| PandaNode (const std::string &name) | |
| void | add_child (PandaNode *child_node, int sort=0, Thread *current_thread=Thread::get_current_thread()) |
| virtual void | add_for_draw (CullTraverser *trav, CullTraverserData &data) |
| Adds the node's contents to the CullResult we are building up during the cull traversal, so that it will be drawn at render time. More... | |
| void | add_stashed (PandaNode *child_node, int sort=0, Thread *current_thread=Thread::get_current_thread()) |
| Adds a new child to the node, directly as a stashed child. More... | |
| void | adjust_draw_mask (DrawMask show_mask, DrawMask hide_mask, DrawMask clear_mask) |
| Adjusts the hide/show bits of this particular node. More... | |
| virtual void | apply_attribs_to_vertices (const AccumulatedAttribs &attribs, int attrib_types, GeomTransformer &transformer) |
| Applies whatever attributes are specified in the AccumulatedAttribs object (and by the attrib_types bitmask) to the vertices on this node, if appropriate. More... | |
| virtual Light * | as_light () |
| Cross-casts the node to a Light pointer, if it is one of the four kinds of Light nodes, or returns NULL if it is not. More... | |
| void | clear_attrib (TypeHandle type) |
| void | clear_attrib (int slot) |
| Removes the render attribute of the given type from this node. More... | |
| void | clear_bounds () |
| Reverses the effect of a previous call to set_bounds(), and allows the node's bounding volume to be automatically computed once more based on the contents of the node. More... | |
| void | clear_effect (TypeHandle type) |
| Removes the render effect of the given type from this node. More... | |
| void | clear_effects (Thread *current_thread=Thread::get_current_thread()) |
| void | clear_state (Thread *current_thread=Thread::get_current_thread()) |
| void | clear_tag (const std::string &key, Thread *current_thread=Thread::get_current_thread()) |
| void | clear_transform (Thread *current_thread=Thread::get_current_thread()) |
| void | clear_unexpected_change (unsigned int flags) |
| Sets one or more of the PandaNode::UnexpectedChange bits off, indicating that the corresponding property may once again change on this node. More... | |
| virtual PandaNode * | combine_with (PandaNode *other) |
| Collapses this PandaNode with the other PandaNode, if possible, and returns a pointer to the combined PandaNode, or NULL if the two PandaNodes cannot safely be combined. More... | |
| int | compare_tags (const PandaNode *other) const |
| Returns a number less than 0, 0, or greater than 0, to indicate the similarity of tags between this node and the other one. More... | |
| void | copy_all_properties (PandaNode *other) |
| Copies the TransformState, RenderState, RenderEffects, tags, Python tags, and the show/hide state from the other node onto this one. More... | |
| void | copy_children (PandaNode *other, Thread *current_thread=Thread::get_current_thread()) |
| Makes another instance of all the children of the other node, copying them to this node. More... | |
| void | copy_tags (PandaNode *other) |
| Copies all of the tags stored on the other node onto this node. More... | |
| int | count_num_descendants () const |
| virtual | CPT (TransformState) calc_tight_bounds(LPoint3 &min_point |
| CPT (RenderAttrib) get_attrib(TypeHandle type) const | |
| CPT (RenderAttrib) get_attrib(int slot) const | |
| CPT (RenderEffect) get_effect(TypeHandle type) const | |
| CPT (RenderState) get_state(Thread *current_thread | |
| CPT (RenderEffects) get_effects(Thread *current_thread | |
| CPT (TransformState) get_transform(Thread *current_thread | |
| CPT (TransformState) get_prev_transform(Thread *current_thread | |
| CPT (RenderAttrib) get_off_clip_planes(Thread *current_thread | |
| CPT (BoundingVolume) get_bounds(Thread *current_thread | |
| CPT (BoundingVolume) get_bounds(UpdateSeq &seq | |
| CPT (BoundingVolume) get_internal_bounds(Thread *current_thread | |
| virtual PandaNode * | dupe_for_flatten () const |
| This is similar to make_copy(), but it makes a copy for the specific purpose of flatten. More... | |
| int | find_child (PandaNode *node, Thread *current_thread=Thread::get_current_thread()) const |
| Returns the index of the indicated child node, if it is a child, or -1 if it is not. More... | |
| int | find_parent (PandaNode *node, Thread *current_thread=Thread::get_current_thread()) const |
| Returns the index of the indicated parent node, if it is a parent, or -1 if it is not. More... | |
| int | find_stashed (PandaNode *node, Thread *current_thread=Thread::get_current_thread()) const |
| Returns the index of the indicated stashed node, if it is a stashed child, or -1 if it is not. More... | |
| BoundingVolume::BoundsType | get_bounds_type () const |
| PandaNode * | get_child (int n, Thread *current_thread=Thread::get_current_thread()) const |
| int | get_child_sort (int n, Thread *current_thread=Thread::get_current_thread()) const |
| Returns the sort index of the nth child node of this node (that is, the number that was passed to add_child()). More... | |
| Children | get_children (Thread *current_thread=Thread::get_current_thread()) const |
| DrawMask | get_draw_control_mask () const |
| DrawMask | get_draw_show_mask () const |
| int | get_fancy_bits (Thread *current_thread=Thread::get_current_thread()) const |
| Returns the union of all of the enum FancyBits values corresponding to the various "fancy" attributes that are set on the node. More... | |
| virtual int | get_first_visible_child () const |
| Returns the index number of the first visible child of this node, or a number >= get_num_children() if there are no visible children of this node. More... | |
| int | get_internal_vertices (Thread *current_thread=Thread::get_current_thread()) const |
| CollideMask | get_into_collide_mask () const |
| virtual CollideMask | get_legal_collide_mask () const |
| int | get_nested_vertices (Thread *current_thread=Thread::get_current_thread()) const |
| CollideMask | get_net_collide_mask (Thread *current_thread=Thread::get_current_thread()) const |
| Returns the union of all into_collide_mask() values set at CollisionNodes at this level and below. More... | |
| DrawMask | get_net_draw_control_mask () const |
| Returns the set of bits in get_net_draw_show_mask() that have been explicitly set via adjust_draw_mask(), rather than implicitly inherited. More... | |
| DrawMask | get_net_draw_show_mask () const |
| Returns the union of all draw_show_mask values–of renderable nodes only– at this level and below. More... | |
| virtual int | get_next_visible_child (int n) const |
| Returns the index number of the next visible child of this node following the indicated child, or a number >= get_num_children() if there are no more visible children of this node. More... | |
| int | get_num_children (Thread *current_thread=Thread::get_current_thread()) const |
| int | get_num_parents (Thread *current_thread=Thread::get_current_thread()) const |
| int | get_num_stashed (Thread *current_thread=Thread::get_current_thread()) const |
| size_t | get_num_tags () const |
| PandaNode * | get_parent (int n, Thread *current_thread=Thread::get_current_thread()) const |
| Parents | get_parents (Thread *current_thread=Thread::get_current_thread()) const |
| PandaNode * | get_stashed (int n, Thread *current_thread=Thread::get_current_thread()) const |
| Stashed | get_stashed (Thread *current_thread=Thread::get_current_thread()) const |
| int | get_stashed_sort (int n, Thread *current_thread=Thread::get_current_thread()) const |
| Returns the sort index of the nth stashed node of this node (that is, the number that was passed to add_child()). More... | |
| std::string | get_tag (const std::string &key, Thread *current_thread=Thread::get_current_thread()) const |
| std::string | get_tag_key (size_t i) const |
| void | get_tag_keys (vector_string &keys) const |
| Fills the given vector up with the list of tags on this PandaNode. More... | |
| unsigned int | get_unexpected_change (unsigned int flags) const |
| Returns nonzero if any of the bits in the input parameter are set on this node, or zero if none of them are set. More... | |
| virtual int | get_unsafe_to_apply_attribs () const |
| Returns the union of all attributes from SceneGraphReducer::AttribTypes that may not safely be applied to the vertices of this node. More... | |
| virtual int | get_visible_child () const |
| Returns the index number of the currently visible child of this node. More... | |
| bool | has_attrib (TypeHandle type) const |
| bool | has_attrib (int slot) const |
| bool | has_dirty_prev_transform () const |
| bool | has_effect (TypeHandle type) const |
| virtual bool | has_selective_visibility () const |
| Should be overridden by derived classes to return true if this kind of node has some restrictions on the set of children that should be rendered. More... | |
| virtual bool | has_single_child_visibility () const |
| Should be overridden by derived classes to return true if this kind of node has the special property that just one of its children is visible at any given time, and furthermore that the particular visible child can be determined without reference to any external information (such as a camera). More... | |
| bool | has_tag (const std::string &key, Thread *current_thread=Thread::get_current_thread()) const |
| bool | has_tags () const |
| virtual bool | is_ambient_light () const |
| Returns true if this is an AmbientLight, false if it is not a light, or it is some other kind of light. More... | |
| bool | is_bounds_stale () const |
| virtual bool | is_collision_node () const |
| A simple downcast check. More... | |
| bool | is_final (Thread *current_thread=Thread::get_current_thread()) const |
| virtual bool | is_geom_node () const |
| A simple downcast check. More... | |
| virtual bool | is_lod_node () const |
| A simple downcast check. More... | |
| bool | is_overall_hidden () const |
| 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_scene_root () const |
| Returns true if this particular node is known to be the render root of some active DisplayRegion associated with the global GraphicsEngine, false otherwise. More... | |
| bool | is_under_scene_root () const |
| Returns true if this particular node is in a live scene graph: that is, it is a child or descendent of a node that is itself a scene root. More... | |
| void | list_tags (std::ostream &out, const std::string &separator="\n") const |
| Writes a list of all the tag keys assigned to the node to the indicated stream. More... | |
| void | ls (std::ostream &out, int indent_level) const |
| void | mark_bounds_stale (Thread *current_thread=Thread::get_current_thread()) const |
| void | mark_internal_bounds_stale (Thread *current_thread=Thread::get_current_thread()) |
| virtual void | output (std::ostream &out) const |
| void | prepare_scene (GraphicsStateGuardianBase *gsg, const RenderState *node_state) |
| virtual bool | preserve_name () const |
| Returns true if the node's name has extrinsic meaning and must be preserved across a flatten operation, false otherwise. More... | |
| PT (PandaNode) copy_subgraph(Thread *current_thread | |
| virtual void | r_prepare_scene (GraphicsStateGuardianBase *gsg, const RenderState *node_state, GeomTransformer &transformer, Thread *current_thread) |
| The recursive implementation of prepare_scene(). More... | |
| void | remove_all_children (Thread *current_thread=Thread::get_current_thread()) |
| Removes all the children from the node at once, including stashed children. More... | |
| void | remove_child (int child_index, Thread *current_thread=Thread::get_current_thread()) |
| Removes the nth child from the node. More... | |
| bool | remove_child (PandaNode *child_node, Thread *current_thread=Thread::get_current_thread()) |
| Removes the indicated child from the node. More... | |
| void | remove_stashed (int child_index, Thread *current_thread=Thread::get_current_thread()) |
| Removes the nth stashed child from the node. More... | |
| bool | replace_child (PandaNode *orig_child, PandaNode *new_child, Thread *current_thread=Thread::get_current_thread()) |
| Searches for the orig_child node in the node's list of children, and replaces it with the new_child instead. More... | |
| void | replace_node (PandaNode *other) |
| Inserts this node into the scene graph in place of the other one, and removes the other node. More... | |
| void | reset_prev_transform (Thread *current_thread=Thread::get_current_thread()) |
| Resets the transform that represents this node's "previous" position to the same as the current transform. More... | |
| virtual bool | safe_to_combine () const |
| Returns true if it is generally safe to combine this particular kind of PandaNode with other kinds of PandaNodes of compatible type, adding children or whatever. More... | |
| virtual bool | safe_to_combine_children () const |
| Returns true if it is generally safe to combine the children of this PandaNode with each other. More... | |
| virtual bool | safe_to_flatten () const |
| Returns true if it is generally safe to flatten out this particular kind of PandaNode by duplicating instances (by calling dupe_for_flatten()), false otherwise (for instance, a Camera cannot be safely flattened, because the Camera pointer itself is meaningful). More... | |
| virtual bool | safe_to_flatten_below () const |
| Returns true if a flatten operation may safely continue past this node, or false if nodes below this node may not be molested. More... | |
| virtual bool | safe_to_modify_transform () const |
| Returns true if it is safe to automatically adjust the transform on this kind of node. More... | |
| virtual bool | safe_to_transform () const |
| Returns true if it is generally safe to transform this particular kind of PandaNode by calling the xform() method, false otherwise. More... | |
| void | set_attrib (const RenderAttrib *attrib, int override=0) |
| Adds the indicated render attribute to the scene graph on this node. More... | |
| void | set_bound (const BoundingVolume *volume) |
| Deprecated. More... | |
| void | set_bounds (const BoundingVolume *volume) |
| Resets the bounding volume so that it is the indicated volume. More... | |
| void | set_bounds_type (BoundingVolume::BoundsType bounds_type) |
| Specifies the desired type of bounding volume that will be created for this node. More... | |
| void | set_effect (const RenderEffect *effect) |
| Adds the indicated render effect to the scene graph on this node. More... | |
| void | set_effects (const RenderEffects *effects, Thread *current_thread=Thread::get_current_thread()) |
| void | set_final (bool flag) |
| void | set_into_collide_mask (CollideMask mask) |
| void | set_overall_hidden (bool overall_hidden) |
| void | set_prev_transform (const TransformState *transform, Thread *current_thread=Thread::get_current_thread()) |
| Sets the transform that represents this node's "previous" position, one frame ago, for the purposes of detecting motion for accurate collision calculations. More... | |
| void | set_state (const RenderState *state, Thread *current_thread=Thread::get_current_thread()) |
| void | set_tag (const std::string &key, const std::string &value, Thread *current_thread=Thread::get_current_thread()) |
| void | set_transform (const TransformState *transform, Thread *current_thread=Thread::get_current_thread()) |
| void | set_unexpected_change (unsigned int flags) |
| Sets one or more of the PandaNode::UnexpectedChange bits on, indicating that the corresponding property should not change again on this node. More... | |
| bool | stash_child (PandaNode *child_node, Thread *current_thread=Thread::get_current_thread()) |
| Stashes the indicated child node. More... | |
| void | stash_child (int child_index, Thread *current_thread=Thread::get_current_thread()) |
| Stashes the indicated child node. More... | |
| void | steal_children (PandaNode *other, Thread *current_thread=Thread::get_current_thread()) |
| Moves all the children from the other node onto this node. More... | |
| bool | unstash_child (PandaNode *child_node, Thread *current_thread=Thread::get_current_thread()) |
| Returns the indicated stashed node to normal child status. More... | |
| void | unstash_child (int stashed_index, Thread *current_thread=Thread::get_current_thread()) |
| Returns the indicated stashed node to normal child status. More... | |
| virtual void | update_bam_nested (BamWriter *manager) |
| Called by the BamWriter when this object has not itself been modified recently, but it should check its nested objects for updates. More... | |
| virtual void | write (std::ostream &out, int indent_level) const |
| 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... | |
| void | write_recorder (BamWriter *manager, Datagram &dg) |
| This method is provided for the benefit of classes (like MouseRecorder) that inherit from PandaMode and also RecorderBase. More... | |
| virtual void | xform (const LMatrix4 &mat) |
| Transforms the contents of this PandaNode by the indicated matrix, if it means anything to do so. More... | |
| Public Member Functions inherited from TypedWritableReferenceCount | |
| TypedWritableReferenceCount (const TypedWritableReferenceCount ©) | |
| 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 ©) |
| Public Member Functions inherited from TypedWritable | |
| 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... | |
| vector_uchar | encode_to_bam_stream () const |
| Converts the TypedWritable object into a single stream of data using a BamWriter, and returns that data as a bytes object. More... | |
| bool | encode_to_bam_stream (vector_uchar &data, BamWriter *writer=nullptr) const |
| Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string. More... | |
| virtual void | finalize (BamReader *manager) |
| Called by the BamReader to perform any final actions needed for setting up the object after all objects have been read and all pointers have been completed. More... | |
| UpdateSeq | get_bam_modified () const |
| Returns the current bam_modified counter. More... | |
| void | mark_bam_modified () |
| Increments the bam_modified counter, so that this object will be invalidated and retransmitted on any open bam streams. More... | |
| void | operator= (const TypedWritable ©) |
| virtual bool | require_fully_complete () const |
| Some objects require all of their nested pointers to have been completed before the objects themselves can be completed. More... | |
| Public Member Functions inherited from TypedObject | |
| TypedObject (const TypedObject ©)=default | |
| TypedObject * | as_typed_object () |
| Returns the object, upcast (if necessary) to a TypedObject pointer. More... | |
| const TypedObject * | as_typed_object () const |
| Returns the object, upcast (if necessary) to a TypedObject pointer. More... | |
| int | get_best_parent_from_Set (const std::set< int > &) const |
| int | get_type_index () const |
| Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. More... | |
| bool | is_exact_type (TypeHandle handle) const |
| Returns true if the current object is the indicated type exactly. More... | |
| bool | is_of_type (TypeHandle handle) const |
| Returns true if the current object is or derives from the indicated type. More... | |
| TypedObject & | operator= (const TypedObject ©)=default |
| Public Member Functions inherited from ReferenceCount | |
| int | get_ref_count () const |
| WeakReferenceList * | get_weak_list () const |
| Returns the WeakReferenceList associated with this ReferenceCount object. More... | |
| bool | has_weak_list () const |
| Returns true if this particular ReferenceCount object has a WeakReferenceList created, false otherwise. More... | |
| void | local_object () |
| This function should be called, once, immediately after creating a new instance of some ReferenceCount-derived object on the stack. More... | |
| void | ref () const |
| Explicitly increments the reference count. More... | |
| bool | ref_if_nonzero () const |
| Atomically increases the reference count of this object if it is not zero. More... | |
| bool | test_ref_count_integrity () const |
| Does some easy checks to make sure that the reference count isn't completely bogus. More... | |
| bool | test_ref_count_nonzero () const |
| Does some easy checks to make sure that the reference count isn't zero, or completely bogus. More... | |
| virtual bool | unref () const |
| Explicitly decrements the reference count. More... | |
| WeakReferenceList * | weak_ref () |
| Adds the indicated PointerToVoid as a weak reference to this object. More... | |
| void | weak_unref () |
| Removes the indicated PointerToVoid as a weak reference to this object. More... | |
| Public Member Functions inherited from Namable | |
| Namable (const std::string &initial_name="") | |
| void | clear_name () |
| Resets the Namable's name to empty. More... | |
| const std::string & | get_name () const |
| bool | has_name () const |
| Returns true if the Namable has a nonempty name set, false if the name is empty. More... | |
| void | output (std::ostream &out) const |
| Outputs the Namable. More... | |
| void | set_name (const std::string &name) |
Static Public Member Functions | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| Static Public Member Functions inherited from PandaNode | |
| static DrawMask | get_all_camera_mask () |
| static TypeHandle | get_class_type () |
| static DrawMask | get_overall_bit () |
| static void | init_type () |
| static | PT (PandaNode) decode_from_bam_stream(vector_uchar data |
| static void | register_with_read_factory () |
| Tells the BamReader how to create objects of type PandaNode. More... | |
| static void | reset_all_prev_transform (Thread *current_thread=Thread::get_current_thread()) |
| Visits all nodes in the world with the _dirty_prev_transform flag–that is, all nodes whose _prev_transform is different from the _transform in pipeline stage 0–and resets the _prev_transform to be the same as _transform. More... | |
| static void | set_scene_root_func (SceneRootFunc *func) |
| This is used by the GraphicsEngine to hook in a pointer to the scene_root_func(), the function to determine whether the node is an active scene root. More... | |
| Static Public Member Functions inherited from TypedWritableReferenceCount | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| static | PT (TypedWritableReferenceCount) decode_from_bam_stream(vector_uchar data |
| Static Public Member Functions inherited from TypedWritable | |
| static bool | decode_raw_from_bam_stream (TypedWritable *&ptr, ReferenceCount *&ref_ptr, vector_uchar data, BamReader *reader=nullptr) |
| Reads the bytes created by a previous call to encode_to_bam_stream(), and extracts the single object on those bytes. More... | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| Static Public Member Functions inherited from TypedObject | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| This function is declared non-inline to work around a compiler bug in g++ 2.96. More... | |
| Static Public Member Functions inherited from ReferenceCount | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
| Static Public Member Functions inherited from Namable | |
| static TypeHandle | get_class_type () |
| static void | init_type () |
Public Attributes | |
| const NodePath & | camera |
| const std::string int int PN_stdfloat | distance |
| const std::string int int PN_stdfloat PN_stdfloat | fill_ratio |
| const std::string int | num_x_verts |
| const std::string int int | num_y_verts |
| const std::string & | screen_name |
| Public Attributes inherited from PandaNode | |
| clear_tag | |
| Removes the value defined for this key on this particular node. More... | |
| virtual LPoint3 bool const TransformState Thread * | current_thread = Thread::get_current_thread()) const |
| Thread * | current_thread = Thread::get_current_thread()) const |
| virtual LPoint3 bool & | found_any |
| get_all_camera_mask | |
| Returns a DrawMask that is appropriate for rendering to all cameras. More... | |
| get_bounds_type | |
| Returns the bounding volume type set with set_bounds_type(). More... | |
| get_child | |
| Returns the nth child node of this node. More... | |
| get_children | |
| Returns an object that can be used to walk through the list of children of the node. More... | |
| get_draw_control_mask | |
| Returns the set of bits in draw_show_mask that are considered meaningful. More... | |
| get_draw_show_mask | |
| Returns the hide/show bits of this particular node. More... | |
| get_effects | |
| get_internal_bounds | |
| get_internal_vertices | |
| get_into_collide_mask | |
| Returns the "into" collide mask for this node. More... | |
| get_legal_collide_mask | |
| Returns the subset of CollideMask bits that may be set for this particular type of PandaNode. More... | |
| get_nested_vertices | |
| get_num_children | |
| Returns the number of child nodes this node has. More... | |
| get_num_parents | |
| Returns the number of parent nodes this node has. More... | |
| get_num_stashed | |
| Returns the number of stashed nodes this node has. More... | |
| get_num_tags | |
| get_overall_bit | |
| get_parent | |
| Returns the nth parent node of this node. More... | |
| get_parents | |
| Returns an object that can be used to walk through the list of parents of the node, similar to get_children() and get_stashed(). More... | |
| get_prev_transform | |
| get_python_tags | |
| get_stashed | |
| Returns the nth stashed child of this node. More... | |
| get_state | |
| get_tag | |
| get_tag_key | |
| get_transform | |
| has_tag | |
| is_bounds_stale | |
| is_final | |
| Returns the current state of the "final" flag. More... | |
| is_overall_hidden | |
| Returns true if the node has been hidden to all cameras by clearing its overall bit. More... | |
| virtual LPoint3 & | max_point |
| static BamReader * | reader = nullptr) |
| set_effects | |
| Sets the complete RenderEffects that will be applied this node. More... | |
| set_final | |
| set_into_collide_mask | |
| Sets the "into" CollideMask. More... | |
| set_overall_hidden | |
| Sets or clears the hidden flag. More... | |
| set_state | |
| Sets the complete RenderState that will be applied to all nodes at this level and below. More... | |
| set_tag | |
| Associates a user-defined value with a user-defined key which is stored on the node. More... | |
| set_transform | |
| Sets the transform that will be applied to this node and below. More... | |
| virtual LPoint3 bool const TransformState * | transform |
| Public Attributes inherited from TypedWritableReferenceCount | |
| static BamReader * | reader = nullptr) |
| Public Attributes inherited from TypedObject | |
| get_type | |
| Public Attributes inherited from ReferenceCount | |
| get_ref_count | |
| Returns the current reference count. More... | |
| Public Attributes inherited from Namable | |
| get_name | |
| set_name | |
Additional Inherited Members | |
| Public Types inherited from PandaNode | |
| enum | FancyBits { FB_transform = 0x0001, FB_state = 0x0002, FB_effects = 0x0004, FB_tag = 0x0010, FB_draw_mask = 0x0020, FB_cull_callback = 0x0040 } |
| typedef bool | SceneRootFunc(const PandaNode *) |
| enum | UnexpectedChange { UC_parents = 0x001, UC_children = 0x002, UC_transform = 0x004, UC_state = 0x008, UC_draw_mask = 0x010 } |
| Static Public Attributes inherited from TypedWritable | |
| static TypedWritable *const | Null = nullptr |
Detailed Description
A ProjectionScreen implements a simple system for projective texturing.
The ProjectionScreen node is the parent of a hierarchy of geometry that is considered a "screen"; the ProjectionScreen will automatically recompute all the UV's (for a particular texture stage) on its subordinate geometry according to the relative position and lens parameters of the indicated LensNode.
All this does is recompute UV's; the caller is responsible for applying the appropriate texture(s) to the geometry.
This does not take advantage of any hardware-assisted projective texturing; all of the UV's are computed in the CPU. (Use NodePath::project_texture() to enable hardware-assisted projective texturing.) However, the ProjectionScreen interface does support any kind of lens, linear or nonlinear, that might be defined using the Lens interface, including fisheye and cylindrical lenses.
Definition at line 48 of file projectionScreen.h.
Member Function Documentation
◆ clear_undist_lut()
|
inline |
Removes the distortion lookup table from the projector, if specified.
Definition at line 27 of file projectionScreen.I.
◆ cull_callback()
|
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 104 of file projectionScreen.cxx.
◆ get_auto_recompute()
|
inline |
Returns the auto_recompute flag.
When this is true, the ProjectionScreen will always be recomputed if necessary before the frame is drawn; when it is false, an explicit call to recompute_if_stale() may be required.
Definition at line 217 of file projectionScreen.I.
◆ get_frame_color()
|
inline |
Returns the color the screen will be painted at the portions outside of the lens' frustum.
See set_frame_color().
Definition at line 196 of file projectionScreen.I.
◆ get_invert_uvs()
|
inline |
Returns whether this screen is compensating for a graphics driver inverting the framebuffer image.
See set_invert_uvs().
Definition at line 106 of file projectionScreen.I.
◆ get_last_screen()
|
inline |
Returns an UpdateSeq corresponding to the last time a screen mesh was generated for the ProjectionScreen.
Each time generate_screen() is called, this number is incremented; this allows other objects (like NonlinearImager) to know when they need to recompute themselves.
Definition at line 229 of file projectionScreen.I.
◆ get_projector()
|
inline |
Returns the NodePath to the LensNode that is to serve as the projector for this screen, or empty if no projector is associated.
Definition at line 19 of file projectionScreen.I.
◆ get_texcoord_3d()
|
inline |
See set_texcoord_3d().
Definition at line 128 of file projectionScreen.I.
◆ get_texcoord_name()
|
inline |
Returns the name of the texture coordinates that will be generated by this particular ProjectionScreen, as set by set_texcoord_name().
Definition at line 80 of file projectionScreen.I.
◆ get_undist_lut()
|
inline |
Returns the distortion lookup table provided via set_undist_lut(), if any.
Definition at line 59 of file projectionScreen.I.
◆ get_vignette_color()
|
inline |
Returns the color the screen will be painted at the portions outside of the lens' frustum.
See set_vignette_color().
Definition at line 175 of file projectionScreen.I.
◆ get_vignette_on()
|
inline |
Returns true if vertex-based vignetting is on, false otherwise.
See set_vignette_on().
Definition at line 154 of file projectionScreen.I.
◆ has_undist_lut()
|
inline |
Returns true if a valid distortion lookup table was provided via set_undist_lut(), false otherwise.
Definition at line 51 of file projectionScreen.I.
◆ make_copy()
|
virtual |
◆ recompute()
| void ProjectionScreen::recompute | ( | ) |
Recomputes all the UV's for geometry below the ProjectionScreen node, as if the texture were projected from the associated projector.
This function is normally called automatically whenever the relevant properties change, so it should not normally need to be called directly by the user. However, it does no harm to call this if there is any doubt.
Definition at line 296 of file projectionScreen.cxx.
References NodePath::any_path().
◆ recompute_if_stale() [1/2]
| bool ProjectionScreen::recompute_if_stale | ( | ) |
Calls recompute() only if the relative transform between the ProjectionScreen and the projector has changed, or if any other relevant property has changed.
Returns true if recomputed, false otherwise.
Definition at line 307 of file projectionScreen.cxx.
References NodePath::any_path().
◆ recompute_if_stale() [2/2]
| bool ProjectionScreen::recompute_if_stale | ( | const NodePath & | this_np | ) |
Calls recompute() only if the relative transform between the ProjectionScreen and the projector has changed, or if any other relevant property has changed.
Returns true if recomputed, false otherwise.
Definition at line 318 of file projectionScreen.cxx.
◆ regenerate_screen()
| void ProjectionScreen::regenerate_screen | ( | const NodePath & | projector, |
| const std::string & | screen_name, | ||
| int | num_x_verts, | ||
| int | num_y_verts, | ||
| PN_stdfloat | distance, | ||
| PN_stdfloat | fill_ratio | ||
| ) |
Removes all the children from the ProjectionScreen node, and adds the newly generated child returned by generate_screen().
Definition at line 240 of file projectionScreen.cxx.
References PandaNode::remove_all_children().
◆ set_auto_recompute()
|
inline |
Sets the auto_recompute flag.
When this is true, the ProjectionScreen will always be recomputed if necessary before the frame is drawn; when it is false, an explicit call to recompute_if_stale() may be required.
Definition at line 206 of file projectionScreen.I.
◆ set_frame_color()
|
inline |
Specifies the color the screen will be painted at the portions outside of the lens' frustum; i.e.
where the lens can't see it or illuminate it. This color is only used if the vignette_on flag is true; see set_vignette_on().
Definition at line 186 of file projectionScreen.I.
◆ set_invert_uvs()
|
inline |
Some OpenGL graphics drivers are known to invert the framebuffer image when they copy it to texture.
(This is arguably a problem with the OpenGL spec, which seems to be unclear about the proper ordering of pixels in this operation.)
In any case, set this true to compensate for this effect by inverting the UV's of the projection screen. The default is taken from the Configrc variable project-invert-uvs.
Definition at line 95 of file projectionScreen.I.
◆ set_projector()
| void ProjectionScreen::set_projector | ( | const NodePath & | projector | ) |
Specifies the LensNode that is to serve as the projector for this screen.
The relative position of the LensNode to the ProjectionScreen, as well as the properties of the lens associated with the LensNode, determines the UV's that will be assigned to the geometry within the ProjectionScreen.
The NodePath must refer to a LensNode (or a Camera).
Definition at line 120 of file projectionScreen.cxx.
References NodePath::is_empty().
◆ set_texcoord_3d()
|
inline |
Set this true to force 3-D texture coordinates to be created for the geometry.
When this is true and the geometry has only 2-D texture coordinates, those texture coordinates are dumped in favor of 3-D coordinates. When this is false, whatever texture coordinates already exist are preserved as-is.
Definition at line 118 of file projectionScreen.I.
◆ set_texcoord_name()
|
inline |
Specifies the name of the texture coordinates that are generated by this particular ProjectionScreen.
This can be used in the presence of multitexturing to compute the UV's for just a subset of all of the active stages of the multitexture pipeline.
Definition at line 70 of file projectionScreen.I.
◆ set_undist_lut()
|
inline |
Applies a distortion lookup table to the projector.
This mapping warps the lens effect by passing each ray through an indirection table: the point (u,v) in the indicated lookup table stores the actual (u,v) that the lens produces.
This does not affect the operation of generate_screen().
Definition at line 41 of file projectionScreen.I.
◆ set_vignette_color()
|
inline |
Specifies the color the screen will be painted at the portions outside of the lens' frustum; i.e.
where the lens can't see it or illuminate it. This color is only used if the vignette_on flag is true; see set_vignette_on().
Definition at line 165 of file projectionScreen.I.
◆ set_vignette_on()
|
inline |
Specifies whether vertex-based vignetting should be on.
When this is enabled, vertex color will be set on the screen vertices to color the screen two distinct colors, usually white and black, for the parts of the screen in front of and outside the lens' frustum, respectively. When this is not enabled, the screen color will be left alone.
This effect generally looks terrible, but it does at least make the boundaries of the lens clear.
Definition at line 143 of file projectionScreen.I.
The documentation for this class was generated from the following files:
- panda/src/distort/projectionScreen.h
- panda/src/distort/projectionScreen.cxx
- panda/src/distort/projectionScreen.I
