Computes texture coordinates for geometry automatically based on vertex position and/or normal. More...

#include "texGenAttrib.h"

Inheritance diagram for TexGenAttrib:

Public Types
typedef RenderAttrib::TexGenMode	Mode

Public Types inherited from RenderAttrib
enum	PandaCompareFunc { M_none =0 , M_never , M_less , M_equal , M_less_equal , M_greater , M_not_equal , M_greater_equal , M_always }

enum	TexGenMode { M_off , M_eye_sphere_map , M_world_cube_map , M_eye_cube_map , M_world_normal , M_eye_normal , M_world_position , M_unused , M_eye_position , M_point_sprite , M_unused2 , M_constant }

Public Member Functions
ConstPointerTo< RenderAttrib >	add_stage (TextureStage *stage, Mode mode) const
	Returns a new TexGenAttrib just like this one, with the indicated generation mode for the given stage.

ConstPointerTo< RenderAttrib >	add_stage (TextureStage *stage, Mode mode, const LTexCoord3 &constant_value) const
	Returns a new TexGenAttrib just like this one, with the indicated generation mode for the given stage.

virtual int	complete_pointers (TypedWritable *plist, BamReader manager)
	Receives an array of pointers, one for each time manager->read_pointer() was called in fillin().

virtual TypeHandle	force_init_type ()

const LTexCoord3 &	get_constant_value (TextureStage *stage) const
	Returns the constant value associated with the named texture stage.

int	get_geom_rendering (int geom_rendering) const
	Returns the union of the Geom::GeomRendering bits that will be required once this TexGenAttrib is applied to a geom which includes the indicated geom_rendering bits.

Mode	get_mode (TextureStage *stage) const
	Returns the generation mode associated with the named texture stage, or M_off if nothing is associated with the indicated stage.

virtual int	get_slot () const

virtual TypeHandle	get_type () const

bool	has_gen_texcoord_stage (TextureStage *stage) const
	Returns true if the indicated TextureStage will have texture coordinates generated for it automatically (and thus there is no need to upload the texture coordinates encoded in the vertices).

bool	has_stage (TextureStage *stage) const
	Returns true if there is a mode associated with the indicated stage, or false otherwise (in which case get_transform(stage) will return M_off).

bool	is_empty () const
	Returns true if no stages are defined in the TexGenAttrib, false if at least one is.

virtual void	output (std::ostream &out) const

ConstPointerTo< RenderAttrib >	remove_stage (TextureStage *stage) const
	Returns a new TexGenAttrib just like this one, with the indicated stage removed.

virtual void	write_datagram (BamWriter *manager, Datagram &dg)
	Writes the contents of this object to the datagram for shipping out to a Bam file.

Public Member Functions inherited from RenderAttrib
	RenderAttrib (const RenderAttrib &copy)=delete

virtual	~RenderAttrib ()
	The destructor is responsible for removing the RenderAttrib from the global set if it is there.

int	compare_to (const RenderAttrib &other) const

	CPT (RenderAttrib) compose(const RenderAttrib *other) const

	CPT (RenderAttrib) get_unique() const

	CPT (RenderAttrib) invert_compose(const RenderAttrib *other) const

virtual bool	cull_callback (CullTraverser *trav, const CullTraverserData &data) const
	If has_cull_callback() returns true, this function will be called during the cull traversal to perform any additional operations that should be performed at cull time.

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.

size_t	get_hash () const

virtual bool	has_cull_callback () const
	Should be overridden by derived classes to return true if cull_callback() has been defined.

virtual bool	lower_attrib_can_override () const
	Intended to be overridden by derived RenderAttrib types to specify how two consecutive RenderAttrib objects of the same type interact.

RenderAttrib &	operator= (const RenderAttrib &copy)=delete

virtual bool	unref () const final
	This method overrides ReferenceCount::unref() to clear the pointer from the global object pool when its reference count goes to zero.

virtual void	write (std::ostream &out, int indent_level) const

Public Member Functions inherited from TypedWritableReferenceCount
	TypedWritableReferenceCount (const TypedWritableReferenceCount &copy)

virtual ReferenceCount *	as_reference_count ()
	Returns the pointer cast to a ReferenceCount pointer, if it is in fact of that type.

void	operator= (const TypedWritableReferenceCount &copy)

Public Member Functions inherited from TypedWritable
	TypedWritable (const TypedWritable &copy)

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.

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.

UpdateSeq	get_bam_modified () const
	Returns the current bam_modified counter.

void	mark_bam_modified ()
	Increments the bam_modified counter, so that this object will be invalidated and retransmitted on any open bam streams.

void	operator= (const TypedWritable &copy)

virtual bool	require_fully_complete () const
	Some objects require all of their nested pointers to have been completed before the objects themselves can be completed.

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.

Public Member Functions inherited from TypedObject
	TypedObject (const TypedObject &copy)=default

TypedObject *	as_typed_object ()
	Returns the object, upcast (if necessary) to a TypedObject pointer.

const TypedObject *	as_typed_object () const
	Returns the object, upcast (if necessary) to a TypedObject pointer.

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.

bool	is_exact_type (TypeHandle handle) const
	Returns true if the current object is the indicated type exactly.

bool	is_of_type (TypeHandle handle) const
	Returns true if the current object is or derives from the indicated type.

TypedObject &	operator= (const TypedObject &copy)=default

Public Member Functions inherited from MemoryBase
void	operator delete (void , void )

void	operator delete (void *ptr)

void	operator delete[] (void , void )

void	operator delete[] (void *ptr)

void *	operator new (size_t size)

void *	operator new (size_t size, void *ptr)

void *	operator new[] (size_t size)

void *	operator new[] (size_t size, void *ptr)

Public Member Functions inherited from ReferenceCount
int	get_ref_count () const

WeakReferenceList *	get_weak_list () const
	Returns the WeakReferenceList associated with this ReferenceCount object.

bool	has_weak_list () const
	Returns true if this particular ReferenceCount object has a WeakReferenceList created, false otherwise.

void	local_object ()
	This function should be called, once, immediately after creating a new instance of some ReferenceCount-derived object on the stack.

void	ref () const
	Explicitly increments the reference count.

bool	ref_if_nonzero () const
	Atomically increases the reference count of this object if it is not zero.

bool	test_ref_count_integrity () const
	Does some easy checks to make sure that the reference count isn't completely bogus.

bool	test_ref_count_nonzero () const
	Does some easy checks to make sure that the reference count isn't zero, or completely bogus.

bool	unref_if_one () const
	Atomically decreases the reference count of this object if it is one.

WeakReferenceList *	weak_ref ()
	Adds the indicated PointerToVoid as a weak reference to this object.

void	weak_unref ()
	Removes the indicated PointerToVoid as a weak reference to this object.

Static Public Member Functions
static int	get_class_slot ()

static TypeHandle	get_class_type ()

static void	init_type ()

static ConstPointerTo< RenderAttrib >	make ()
	Constructs a TexGenAttrib that generates no stages at all.

static ConstPointerTo< RenderAttrib >	make (TextureStage *stage, Mode mode)
	Constructs a TexGenAttrib that generates just the indicated stage.

static ConstPointerTo< RenderAttrib >	make_default ()
	Returns a RenderAttrib that corresponds to whatever the standard default properties for render attributes of this type ought to be.

static void	register_with_read_factory ()
	Tells the BamReader how to create objects of type TexGenAttrib.

Static Public Member Functions inherited from RenderAttrib
static TypedWritable *	change_this (TypedWritable old_ptr, BamReader manager)
	Called immediately after complete_pointers(), this gives the object a chance to adjust its own pointer if desired.

static int	garbage_collect ()
	Performs a garbage-collection cycle.

static TypeHandle	get_class_type ()

static int	get_num_attribs ()
	Returns the total number of unique RenderAttrib objects allocated in the world.

static void	init_attribs ()
	Make sure the global _attribs map is allocated.

static void	init_type ()

static void	list_attribs (std::ostream &out)
	Lists all of the RenderAttribs in the cache to the output stream, one per line.

static int	register_slot (TypeHandle type_handle, int sort, RenderAttrib *default_attrib)
	Adds the indicated TypeHandle to the registry, if it is not there already, and returns a unique slot number.

static bool	validate_attribs ()
	Ensures that the cache is still stored in sorted order.

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.

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.

Static Public Member Functions inherited from ReferenceCount
static TypeHandle	get_class_type ()

static void	init_type ()

Public Attributes
	get_class_slot

Public Attributes inherited from RenderAttrib
	get_slot

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.

Additional Inherited Members
Static Public Attributes inherited from TypedWritable
static TypedWritable *const	Null = nullptr

Detailed Description

Computes texture coordinates for geometry automatically based on vertex position and/or normal.

This can be used to implement reflection and/or refraction maps, for instance to make shiny surfaces, as well as other special effects such as projective texturing.

Definition at line 32 of file texGenAttrib.h.

Member Typedef Documentation

◆ Mode

typedef RenderAttrib::TexGenMode TexGenAttrib::Mode

Definition at line 37 of file texGenAttrib.h.

Constructor & Destructor Documentation

◆ ~TexGenAttrib()

TexGenAttrib::~TexGenAttrib ( )

virtual

Definition at line 30 of file texGenAttrib.cxx.

Member Function Documentation

◆ add_stage() [1/2]

ConstPointerTo< RenderAttrib > TexGenAttrib::add_stage	(	TextureStage *	stage,
		TexGenAttrib::Mode	mode ) const

Returns a new TexGenAttrib just like this one, with the indicated generation mode for the given stage.

If this stage already exists, its mode is replaced.

Definition at line 70 of file texGenAttrib.cxx.

References remove_stage().

◆ add_stage() [2/2]

ConstPointerTo< RenderAttrib > TexGenAttrib::add_stage	(	TextureStage *	stage,
		TexGenAttrib::Mode	mode,
		const LTexCoord3 &	constant_value ) const

Returns a new TexGenAttrib just like this one, with the indicated generation mode for the given stage.

If this stage already exists, its mode is replaced.

This variant also accepts constant_value, which is only meaningful if mode is M_constant.

Definition at line 92 of file texGenAttrib.cxx.

References remove_stage().

◆ complete_pointers()

int TexGenAttrib::complete_pointers	(	TypedWritable **	p_list,
		BamReader *	manager )

virtual

Receives an array of pointers, one for each time manager->read_pointer() was called in fillin().

Returns the number of pointers processed.

Reimplemented from TypedWritable.

Definition at line 504 of file texGenAttrib.cxx.

References TypedWritable::complete_pointers().

◆ force_init_type()

virtual TypeHandle TexGenAttrib::force_init_type ( )

inlinevirtual

Reimplemented from RenderAttrib.

Definition at line 141 of file texGenAttrib.h.

◆ get_class_slot()

static int TexGenAttrib::get_class_slot ( )

inlinestatic

Definition at line 111 of file texGenAttrib.h.

◆ get_class_type()

static TypeHandle TexGenAttrib::get_class_type ( )

inlinestatic

Definition at line 129 of file texGenAttrib.h.

◆ get_constant_value()

const LTexCoord3 & TexGenAttrib::get_constant_value ( TextureStage * stage ) const

Returns the constant value associated with the named texture stage.

This is only meaningful if the mode is M_constant.

Definition at line 180 of file texGenAttrib.cxx.

Referenced by GraphicsStateGuardian::fetch_specified_part().

◆ get_geom_rendering()

int TexGenAttrib::get_geom_rendering ( int geom_rendering ) const

inline

Returns the union of the Geom::GeomRendering bits that will be required once this TexGenAttrib is applied to a geom which includes the indicated geom_rendering bits.

Definition at line 43 of file texGenAttrib.I.

Referenced by RenderState::get_geom_rendering().

◆ get_mode()

TexGenAttrib::Mode TexGenAttrib::get_mode ( TextureStage * stage ) const

Returns the generation mode associated with the named texture stage, or M_off if nothing is associated with the indicated stage.

Definition at line 156 of file texGenAttrib.cxx.

Referenced by NodePath::get_tex_gen().

◆ get_slot()

virtual int TexGenAttrib::get_slot ( ) const

inlinevirtual

Implements RenderAttrib.

Definition at line 114 of file texGenAttrib.h.

◆ get_type()

virtual TypeHandle TexGenAttrib::get_type ( ) const

inlinevirtual

Reimplemented from RenderAttrib.

Definition at line 138 of file texGenAttrib.h.

◆ has_gen_texcoord_stage()

bool TexGenAttrib::has_gen_texcoord_stage ( TextureStage * stage ) const

Returns true if the indicated TextureStage will have texture coordinates generated for it automatically (and thus there is no need to upload the texture coordinates encoded in the vertices).

Definition at line 170 of file texGenAttrib.cxx.

◆ has_stage()

bool TexGenAttrib::has_stage ( TextureStage * stage ) const

Returns true if there is a mode associated with the indicated stage, or false otherwise (in which case get_transform(stage) will return M_off).

Definition at line 146 of file texGenAttrib.cxx.

Referenced by NodePath::has_tex_gen().

◆ init_type()

static void TexGenAttrib::init_type ( )

inlinestatic

Definition at line 132 of file texGenAttrib.h.

◆ is_empty()

bool TexGenAttrib::is_empty ( ) const

Returns true if no stages are defined in the TexGenAttrib, false if at least one is.

Definition at line 137 of file texGenAttrib.cxx.

◆ make() [1/2]

ConstPointerTo< RenderAttrib > TexGenAttrib::make ( )

static

Constructs a TexGenAttrib that generates no stages at all.

Definition at line 37 of file texGenAttrib.cxx.

Referenced by EggRenderState::fill_state(), make(), NodePath::set_tex_gen(), and NodePath::set_tex_gen().

◆ make() [2/2]

ConstPointerTo< RenderAttrib > TexGenAttrib::make	(	TextureStage *	stage,
		TexGenAttrib::Mode	mode )

static

Constructs a TexGenAttrib that generates just the indicated stage.

Definition at line 51 of file texGenAttrib.cxx.

References make().

◆ make_default()

ConstPointerTo< RenderAttrib > TexGenAttrib::make_default ( )

static

Returns a RenderAttrib that corresponds to whatever the standard default properties for render attributes of this type ought to be.

Definition at line 60 of file texGenAttrib.cxx.

◆ output()

void TexGenAttrib::output ( std::ostream & out ) const

virtual

Reimplemented from RenderAttrib.

Definition at line 192 of file texGenAttrib.cxx.

◆ register_with_read_factory()

void TexGenAttrib::register_with_read_factory ( )

static

Tells the BamReader how to create objects of type TexGenAttrib.

Definition at line 475 of file texGenAttrib.cxx.

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

Referenced by init_libpgraph().

◆ remove_stage()

ConstPointerTo< RenderAttrib > TexGenAttrib::remove_stage ( TextureStage * stage ) const

Returns a new TexGenAttrib just like this one, with the indicated stage removed.

Definition at line 112 of file texGenAttrib.cxx.

Referenced by add_stage(), add_stage(), and NodePath::clear_tex_gen().

◆ write_datagram()

void TexGenAttrib::write_datagram	(	BamWriter *	manager,
		Datagram &	dg )

virtual

Writes the contents of this object to the datagram for shipping out to a Bam file.

Reimplemented from RenderAttrib.

Definition at line 484 of file texGenAttrib.cxx.

References Datagram::add_uint16(), Datagram::add_uint8(), RenderAttrib::write_datagram(), and BamWriter::write_pointer().

Member Data Documentation

◆ get_class_slot

TexGenAttrib::get_class_slot

Definition at line 117 of file texGenAttrib.h.

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

panda/src/pgraph/texGenAttrib.h
panda/src/pgraph/texGenAttrib.cxx
panda/src/pgraph/texGenAttrib.I

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Mode

Constructor & Destructor Documentation

◆ ~TexGenAttrib()

Member Function Documentation

◆ add_stage() [1/2]

◆ add_stage() [2/2]

◆ complete_pointers()

◆ force_init_type()

◆ get_class_slot()

◆ get_class_type()

◆ get_constant_value()

◆ get_geom_rendering()

◆ get_mode()

◆ get_slot()

◆ get_type()

◆ has_gen_texcoord_stage()

◆ has_stage()

◆ init_type()

◆ is_empty()

◆ make() [1/2]

◆ make() [2/2]

◆ make_default()

◆ output()

◆ register_with_read_factory()

◆ remove_stage()

◆ write_datagram()

Member Data Documentation

◆ get_class_slot