This is the set of characteristics of a texture that, if different from another texture, prevent the two textures from sharing a PaletteImage. More...

#include "textureProperties.h"

Inheritance diagram for TextureProperties:

List of all members.

Public Member Functions
	TextureProperties (const TextureProperties &copy)
void	clear_basic ()
	Resets only the properties that might be changed by update_properties() to a neutral state.
virtual int	complete_pointers (TypedWritable *p_list, BamReader manager)
	Called after the object is otherwise completely read from a Bam file, this function's job is to store the pointers that were retrieved from the Bam file for each pointer object written.
bool	egg_properties_match (const TextureProperties &other) const
	Returns true if all of the properties that are reflected directly in an egg file match between this TextureProperties object and the other, or false if any of them differ.
void	fillin (DatagramIterator &scan, BamReader *manager)
	Reads the binary data from the given datagram iterator, which was written by a previous call to write_datagram().
void	force_grayscale ()
	Sets the actual number of channels to indicate a grayscale image, presumably after discovering that the image contains no colored pixels.
void	force_nonalpha ()
	Sets the actual number of channels to indicate an image with no alpha channel, presumably after discovering that the alpha channel contains no meaningful pixels.
void	fully_define ()
	If any properties remain unspecified, specify them now.
int	get_num_channels () const
	Returns the number of channels (1 through 4) associated with the image.
string	get_string () const
	Returns a string corresponding to the TextureProperties object.
virtual TypeHandle	get_type () const
bool	has_num_channels () const
	Returns true if the number of channels is known.
bool	operator!= (const TextureProperties &other) const
bool	operator< (const TextureProperties &other) const
void	operator= (const TextureProperties &copy)
bool	operator== (const TextureProperties &other) const
void	set_num_channels (int num_channels)
	Sets the number of channels (1 through 4) associated with the image, presumably after reading this information from the image header.
void	update_egg_tex (EggTexture *egg_tex) const
	Adjusts the texture properties of the indicated egg reference to match these properties.
void	update_properties (const TextureProperties &other)
	If the indicate TextureProperties structure is more specific than this one, updates this one.
bool	uses_alpha () const
	Returns true if the texture uses an alpha channel, false otherwise.
virtual void	write_datagram (BamWriter *writer, Datagram &datagram)
	Fills the indicated datagram up with a binary representation of the current object, in preparation for writing to a Bam file.
Static Public Member Functions
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 void	register_with_read_factory ()
	Registers the current object as something that can be read from a Bam file.
Public Attributes
PNMFileType *	_alpha_type
int	_anisotropic_degree
PNMFileType *	_color_type
bool	_force_format
EggTexture::Format	_format
bool	_generic_format
bool	_keep_format
EggTexture::FilterType	_magfilter
EggTexture::FilterType	_minfilter
EggTexture::QualityLevel	_quality_level
Static Protected Member Functions
static TypedWritable *	make_TextureProperties (const FactoryParams &params)
	This method is called by the BamReader when an object of this type is encountered in a Bam file; it should allocate and return a new object with all the data read.

Detailed Description

This is the set of characteristics of a texture that, if different from another texture, prevent the two textures from sharing a PaletteImage.

It includes properties such as mipmapping, number of channels, etc.

Definition at line 34 of file textureProperties.h.

Member Function Documentation

void TextureProperties::clear_basic ( )

Resets only the properties that might be changed by update_properties() to a neutral state.

Definition at line 100 of file textureProperties.cxx.

Referenced by ImageFile::clear_basic_properties().

int TextureProperties::complete_pointers	(	TypedWritable **	p_list,
		BamReader *	manager
	)		`[virtual]`

Called after the object is otherwise completely read from a Bam file, this function's job is to store the pointers that were retrieved from the Bam file for each pointer object written.

The return value is the number of pointers processed from the list.

Reimplemented from TypedWritable.

Definition at line 856 of file textureProperties.cxx.

Referenced by TextureReference::complete_pointers(), PalettePage::complete_pointers(), and ImageFile::complete_pointers().

bool TextureProperties::egg_properties_match ( const TextureProperties & other ) const

Returns true if all of the properties that are reflected directly in an egg file match between this TextureProperties object and the other, or false if any of them differ.

Definition at line 512 of file textureProperties.cxx.

Referenced by TextureReference::is_equivalent(), and TextureImage::post_txa_file().

void TextureProperties::fillin	(	DatagramIterator &	scan,
		BamReader *	manager
	)		`[virtual]`

Reads the binary data from the given datagram iterator, which was written by a previous call to write_datagram().

Reimplemented from TypedWritable.

Definition at line 899 of file textureProperties.cxx.

References DatagramIterator::get_bool(), DatagramIterator::get_int32(), and BamReader::read_pointer().

Referenced by TextureReference::fillin(), PalettePage::fillin(), ImageFile::fillin(), and make_TextureProperties().

void TextureProperties::force_grayscale ( )

Sets the actual number of channels to indicate a grayscale image, presumably after discovering that the image contains no colored pixels.

Definition at line 156 of file textureProperties.cxx.

void TextureProperties::force_nonalpha ( )

Sets the actual number of channels to indicate an image with no alpha channel, presumably after discovering that the alpha channel contains no meaningful pixels.

Definition at line 171 of file textureProperties.cxx.

void TextureProperties::fully_define ( )

If any properties remain unspecified, specify them now.

Also reconcile conflicting information.

Definition at line 270 of file textureProperties.cxx.

Referenced by TextureImage::post_txa_file().

int TextureProperties::get_num_channels ( ) const

Returns the number of channels (1 through 4) associated with the image.

It is an error to call this unless has_num_channels() returns true.

Definition at line 129 of file textureProperties.cxx.

Referenced by ImageFile::get_num_channels(), TextureImage::post_txa_file(), and TextureImage::write_source_pathnames().

string TextureProperties::get_string ( ) const

Returns a string corresponding to the TextureProperties object.

Each unique set of TextureProperties will generate a unique string. This is used to generate unique palette image filenames.

Definition at line 212 of file textureProperties.cxx.

bool TextureProperties::has_num_channels ( ) const

Returns true if the number of channels is known.

Definition at line 117 of file textureProperties.cxx.

Referenced by ImageFile::has_num_channels(), TextureImage::post_txa_file(), and TextureImage::write_source_pathnames().

static void TextureProperties::init_type ( ) [inline, static]

This function is declared non-inline to work around a compiler bug in g++ 2.96.

Making it inline seems to cause problems in the optimizer.

Reimplemented from TypedWritable.

Definition at line 107 of file textureProperties.h.

TypedWritable * TextureProperties::make_TextureProperties ( const FactoryParams & params ) [static, protected]

This method is called by the BamReader when an object of this type is encountered in a Bam file; it should allocate and return a new object with all the data read.

Definition at line 881 of file textureProperties.cxx.

References fillin().

Referenced by register_with_read_factory().

void TextureProperties::register_with_read_factory ( ) [static]

Registers the current object as something that can be read from a Bam file.

Definition at line 816 of file textureProperties.cxx.

References BamReader::get_factory(), and make_TextureProperties().

void TextureProperties::set_num_channels ( int num_channels )

Sets the number of channels (1 through 4) associated with the image, presumably after reading this information from the image header.

Definition at line 142 of file textureProperties.cxx.

Referenced by TextureImage::post_txa_file(), and SourceTextureImage::set_header().

void TextureProperties::update_egg_tex ( EggTexture * egg_tex ) const