This represents the <Transform> entry of a group or texture node: a list of component transform operations, applied in order, that describe a net transform matrix. More...

#include "eggTransform.h"

Inheritance diagram for EggTransform:

Public Types
enum	ComponentType { CT_invalid, CT_translate2d, CT_translate3d, CT_rotate2d, CT_rotx, CT_roty, CT_rotz, CT_rotate3d, CT_scale2d, CT_scale3d, CT_uniform_scale, CT_matrix3, CT_matrix4 }

Public Member Functions
	EggTransform (const EggTransform &copy)

void	add_matrix3 (const LMatrix3d &mat)
	Appends an arbitrary 3x3 matrix to the current transform. More...

void	add_matrix4 (const LMatrix4d &mat)
	Appends an arbitrary 4x4 matrix to the current transform. More...

void	add_rotate2d (double angle)
	Appends a 2-d rotation to the current transform. More...

void	add_rotate3d (double angle, const LVector3d &axis)
	Appends a 3-d rotation about an arbitrary axis to the current transform. More...

void	add_rotate3d (const LQuaterniond &quat)
	Appends an arbitrary 3-d rotation to the current transform, expressed as a quaternion. More...

void	add_rotx (double angle)
	Appends a rotation about the X axis to the current transform. More...

void	add_roty (double angle)
	Appends a rotation about the Y axis to the current transform. More...

void	add_rotz (double angle)
	Appends a rotation about the Z axis to the current transform. More...

void	add_scale2d (const LVecBase2d &scale)
	Appends a possibly non-uniform scale to the current transform. More...

void	add_scale3d (const LVecBase3d &scale)
	Appends a possibly non-uniform scale to the current transform. More...

void	add_translate2d (const LVector2d &translate)
	Appends a 2-d translation operation to the current transform. More...

void	add_translate3d (const LVector3d &translate)
	Appends a 3-d translation operation to the current transform. More...

void	add_uniform_scale (double scale)
	Appends a uniform scale to the current transform. More...

void	clear_transform ()
	Resets the transform to empty, identity. More...

const LMatrix3d &	get_component_mat3 (int n) const
	Returns the 3x3 matrix associated with the nth component. More...

const LMatrix4d &	get_component_mat4 (int n) const
	Returns the 4x4 matrix associated with the nth component. More...

double	get_component_number (int n) const
	Returns the solitary number associated with the nth component. More...

ComponentType	get_component_type (int n) const
	Returns the type of the nth component. More...

const LVecBase2d &	get_component_vec2 (int n) const
	Returns the 2-component vector associated with the nth component. More...

const LVecBase3d &	get_component_vec3 (int n) const
	Returns the 3-component vector associated with the nth component. More...

int	get_num_components () const
	Returns the number of components that make up the transform. More...

LMatrix3d	get_transform2d () const
	Returns the overall transform as a 3x3 matrix. More...

const LMatrix4d &	get_transform3d () const
	Returns the overall transform as a 4x4 matrix. More...

bool	has_transform () const
	Returns true if the transform is nonempty, false if it is empty (no transform components have been added). More...

bool	has_transform2d () const
	Returns true if the transform is specified as a 2-d transform, e.g. More...

bool	has_transform3d () const
	Returns true if the transform is specified as a 3-d transform, e.g. More...

EggTransform &	operator= (const EggTransform &copy)

void	set_transform2d (const LMatrix3d &mat)
	Sets the overall transform as a 3x3 matrix. More...

void	set_transform3d (const LMatrix4d &mat)
	Sets the overall transform as a 4x4 matrix. More...

bool	transform_is_identity () const
	Returns true if the described transform is identity, false otherwise. More...

void	write (std::ostream &out, int indent_level, const std::string &label) const
	Writes the transform to the indicated stream in Egg format. More...

Detailed Description

This represents the <Transform> entry of a group or texture node: a list of component transform operations, applied in order, that describe a net transform matrix.

This may be either a 3-d transform, and therefore described by a 4x4 matrix, or a 2-d transform, described by a 3x3 matrix.

Definition at line 29 of file eggTransform.h.

Member Function Documentation

◆ add_matrix3()

void EggTransform::add_matrix3 ( const LMatrix3d & mat )

inline

Appends an arbitrary 3x3 matrix to the current transform.

Definition at line 123 of file eggTransform.I.

◆ add_matrix4()

void EggTransform::add_matrix4 ( const LMatrix4d & mat )

inline

Appends an arbitrary 4x4 matrix to the current transform.

Definition at line 132 of file eggTransform.I.

◆ add_rotate2d()

void EggTransform::add_rotate2d ( double angle )

Appends a 2-d rotation to the current transform.

The rotation angle is specified in degrees counterclockwise about the origin.

Definition at line 84 of file eggTransform.cxx.

◆ add_rotate3d() [1/2]

void EggTransform::add_rotate3d	(	double	angle,
		const LVector3d &	axis
	)

Appends a 3-d rotation about an arbitrary axis to the current transform.

The rotation angle is specified in degrees counterclockwise about the axis.

Definition at line 131 of file eggTransform.cxx.

◆ add_rotate3d() [2/2]

void EggTransform::add_rotate3d ( const LQuaterniond & quat )

Appends an arbitrary 3-d rotation to the current transform, expressed as a quaternion.

This is converted to axis-angle notation for the egg file.

Definition at line 145 of file eggTransform.cxx.

◆ add_rotx()

void EggTransform::add_rotx ( double angle )

Appends a rotation about the X axis to the current transform.

The rotation angle is specified in degrees counterclockwise about the axis.

Definition at line 95 of file eggTransform.cxx.

◆ add_roty()

void EggTransform::add_roty ( double angle )

Appends a rotation about the Y axis to the current transform.

The rotation angle is specified in degrees counterclockwise about the axis.

Definition at line 107 of file eggTransform.cxx.

◆ add_rotz()

void EggTransform::add_rotz ( double angle )

Appends a rotation about the Z axis to the current transform.

The rotation angle is specified in degrees counterclockwise about the axis.

Definition at line 119 of file eggTransform.cxx.

◆ add_scale2d()

void EggTransform::add_scale2d ( const LVecBase2d & scale )

Appends a possibly non-uniform scale to the current transform.

Definition at line 155 of file eggTransform.cxx.

◆ add_scale3d()

void EggTransform::add_scale3d ( const LVecBase3d & scale )

Appends a possibly non-uniform scale to the current transform.

Definition at line 167 of file eggTransform.cxx.

◆ add_translate2d()

void EggTransform::add_translate2d ( const LVector2d & translate )

Appends a 2-d translation operation to the current transform.

Definition at line 60 of file eggTransform.cxx.

◆ add_translate3d()

void EggTransform::add_translate3d ( const LVector3d & translate )

Appends a 3-d translation operation to the current transform.

Definition at line 71 of file eggTransform.cxx.

◆ add_uniform_scale()

void EggTransform::add_uniform_scale ( double scale )

Appends a uniform scale to the current transform.

Definition at line 179 of file eggTransform.cxx.

◆ clear_transform()

void EggTransform::clear_transform ( )

inline

Resets the transform to empty, identity.

Definition at line 114 of file eggTransform.I.

Referenced by EggGroup::clear_default_pose(), and FltToEggLevelState::set_transform().

◆ get_component_mat3()

const LMatrix3d & EggTransform::get_component_mat3 ( int n ) const

inline

Returns the 3x3 matrix associated with the nth component.

It is an error to call this if the component type is not CT_matrix3.

Definition at line 283 of file eggTransform.I.

◆ get_component_mat4()

const LMatrix4d & EggTransform::get_component_mat4 ( int n ) const

inline

Returns the 4x4 matrix associated with the nth component.

It is an error to call this if the component type is not CT_matrix4.

Definition at line 294 of file eggTransform.I.

◆ get_component_number()

double EggTransform::get_component_number ( int n ) const

inline

Returns the solitary number associated with the nth component.

In the case of a rotation, this is the angle in degrees to rotate; in the case of uniform scale, this is the amount of the scale. Other types do not use this property.

Definition at line 249 of file eggTransform.I.

◆ get_component_type()

EggTransform::ComponentType EggTransform::get_component_type ( int n ) const

inline

Returns the type of the nth component.

Definition at line 237 of file eggTransform.I.

◆ get_component_vec2()

const LVecBase2d & EggTransform::get_component_vec2 ( int n ) const

inline

Returns the 2-component vector associated with the nth component.

This may be the translate vector, rotate axis, or non-uniform scale. It is an error to call this if the component type does not use a 2-d vector property.

Definition at line 260 of file eggTransform.I.

◆ get_component_vec3()

const LVecBase3d & EggTransform::get_component_vec3 ( int n ) const

inline

Returns the 3-component vector associated with the nth component.

This may be the translate vector, rotate axis, or non-uniform scale. It is an error to call this if the component type does not use a 3-d vector property.

Definition at line 272 of file eggTransform.I.

◆ get_num_components()

int EggTransform::get_num_components ( ) const

inline

Returns the number of components that make up the transform.

Definition at line 229 of file eggTransform.I.

Referenced by CPT(), and write().

◆ get_transform2d()

LMatrix3d EggTransform::get_transform2d ( ) const

inline

Returns the overall transform as a 3x3 matrix.

It is an error to call this if has_transform3d() is true.

Definition at line 198 of file eggTransform.I.

◆ get_transform3d()

const LMatrix4d & EggTransform::get_transform3d ( ) const

inline

Returns the overall transform as a 4x4 matrix.

It is valid to call this even if has_transform2d() is true; in this case, the 3x3 transform will be expanded to a 4x4 matrix.

Definition at line 212 of file eggTransform.I.

Referenced by XFileAnimationSet::create_hierarchy(), EggTexture::is_equivalent_to(), and EggTexture::sorts_less_than().

◆ has_transform()

bool EggTransform::has_transform ( ) const

inline

Returns true if the transform is nonempty, false if it is empty (no transform components have been added).

This is true for either a 2-d or a 3-d transform.

Definition at line 143 of file eggTransform.I.

Referenced by has_transform2d(), has_transform3d(), EggTexture::is_equivalent_to(), and EggTexture::sorts_less_than().

◆ has_transform2d()

bool EggTransform::has_transform2d ( ) const

inline

Returns true if the transform is specified as a 2-d transform, e.g.

with a 3x3 matrix, or false if it is specified as a 3-d transform (with a 4x4 matrix), or not specified at all.

Normally, EggTextures have a 2-d matrix (but occasionally they use a 3-d matrix), and EggGroups always have a 3-d matrix.

Definition at line 156 of file eggTransform.I.

References has_transform().

◆ has_transform3d()

bool EggTransform::has_transform3d ( ) const

inline

Returns true if the transform is specified as a 3-d transform, e.g.

with a 4x4 matrix, or false if it is specified as a 2-d transform (with a 2x2 matrix), or not specified at all.

Normally, EggTextures have a 3-d matrix (but occasionally they use a 3-d matrix), and EggGroups always have a 3-d matrix.

Definition at line 179 of file eggTransform.I.

References has_transform().

◆ set_transform2d()

void EggTransform::set_transform2d ( const LMatrix3d & mat )

inline

Sets the overall transform as a 3x3 matrix.

This completely replaces whatever componentwise transform may have been defined.

Definition at line 165 of file eggTransform.I.

◆ set_transform3d()

void EggTransform::set_transform3d ( const LMatrix4d & mat )

inline

Sets the overall transform as a 4x4 matrix.

This completely replaces whatever componentwise transform may have been defined.

Definition at line 188 of file eggTransform.I.

◆ transform_is_identity()

bool EggTransform::transform_is_identity ( ) const

inline

Returns true if the described transform is identity, false otherwise.

Definition at line 220 of file eggTransform.I.

Referenced by EggTexture::is_equivalent_to(), and EggTexture::sorts_less_than().

◆ write()

void EggTransform::write	(	std::ostream &	out,
		int	indent_level,
		const std::string &	label
	)		const

Writes the transform to the indicated stream in Egg format.

Definition at line 189 of file eggTransform.cxx.

References get_num_components(), and indent().

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

panda/src/egg/eggTransform.h
panda/src/egg/eggTransform.cxx
panda/src/egg/eggTransform.I

Public Types

Public Member Functions

Detailed Description

Member Function Documentation

◆ add_matrix3()

◆ add_matrix4()

◆ add_rotate2d()

◆ add_rotate3d() [1/2]

◆ add_rotate3d() [2/2]

◆ add_rotx()

◆ add_roty()

◆ add_rotz()

◆ add_scale2d()

◆ add_scale3d()

◆ add_translate2d()

◆ add_translate3d()

◆ add_uniform_scale()

◆ clear_transform()

◆ get_component_mat3()

◆ get_component_mat4()

◆ get_component_number()

◆ get_component_type()

◆ get_component_vec2()

◆ get_component_vec3()

◆ get_num_components()

◆ get_transform2d()

◆ get_transform3d()

◆ has_transform()

◆ has_transform2d()

◆ has_transform3d()

◆ set_transform2d()

◆ set_transform3d()

◆ transform_is_identity()

◆ write()