Allows for 2-dimensional transformations in a single application via matrix math. More...

#include <hdicoreTransformMatrix.h>

Public Member Functions
	TransformMatrix ()
	Constructs a TransformMatrix and sets its entries to that of an identity matrix.

	TransformMatrix (const double a_, const double b_, const double c_, const double d_, const double tx_, const double ty_)
	Constructs a TransformMatrix and sets its entries to the arguments provided.

	TransformMatrix (const TransformMatrix &m_)
	TransformMatrix copy constructor.

virtual	~TransformMatrix ()
	TransformMatrix destructor.

virtual void	setIdentity ()
	Sets a TransformMatrix object's entries to that of an identity matrix.

virtual bool	isIdentity () const
	Gets whether a TransformMatrix currently has its entries set to that of an identity matrix.

virtual void	setTranslate (const double tx_, const double ty_)
	Sets the translation values of a matrix.

virtual void	setRotate (const Angle &angle_)
	Sets the rotation values, about the origin, of a matrix.

virtual void	setScale (const double sx_, const double sy_)
	Sets the scale values, from the origin, of a matrix.

virtual void	concatTranslate (const double tx_, const double ty_)
	Concatenates translation values to an existing matrix.

virtual void	concatRotate (const Angle &angle_)
	Concatenates rotation values to an existing matrix.

virtual void	concatScale (const double sx_, const double sy_)
	Concatenates scale values to an existing matrix.

virtual void	concat (const TransformMatrix &matrix2_)
	Concatenates one matrix with another.

virtual double	determinant () const
	Gets the determinant of the target matrix.

virtual bool	degenerate () const
	Gets whether the target matrix is degenerate.

virtual bool	invert (TransformMatrix &inverse__) const
	Inverts a target matrix.

virtual bool	operator== (const TransformMatrix &rhs_) const
	Compares two matrices for equality.

virtual bool	operator!= (const TransformMatrix &rhs_) const
	Compares two matrices for inequality.

virtual TransformMatrix &	operator= (const TransformMatrix &rhs_)
	Sets a target matrix to have the same values as another.

virtual TransformMatrix	operator* (const TransformMatrix &rhs_) const
	Multiplies two matrices together.

virtual TransformMatrix &	operator*= (const TransformMatrix &rhs_)
	Multiplies and assigns (concatenates) one matrix with another.

Public Attributes
double	a
	Row 0, column 0 of the transformation matrix.

double	b
	Row 0, column 1 of the transformation matrix.

double	c
	Row 1, column 0 of the transformation matrix.

double	d
	Row 1, column 1 of the transformation matrix.

double	tx
	Stores the x-axis translation (offset) value.

double	ty
	Stores the y-axis translation (offset) value.

Friends
aip::TransformMatrix *	__accessImpl (const TransformMatrix &)

TransformMatrix	__accessCtor (const aip::TransformMatrix &)

Detailed Description

Allows for 2-dimensional transformations in a single application via matrix math.

Constructor & Destructor Documentation

◆ TransformMatrix() [1/3]

hdi::core::TransformMatrix::TransformMatrix ( )

Constructs a TransformMatrix and sets its entries to that of an identity matrix.

Author: GW

Date: 08/2013

◆ TransformMatrix() [2/3]

hdi::core::TransformMatrix::TransformMatrix	(	const double	a_,
		const double	b_,
		const double	c_,
		const double	d_,
		const double	tx_,
		const double	ty_
	)

Constructs a TransformMatrix and sets its entries to the arguments provided.

Author: GW

Date: 08/2013

Parameters

a_	Value for entry at row 0, column 0
b_	Value for entry at row 0, column 1
c_	Value for entry at row 1, column 0
d_	Value for entry at row 1, column 1
tx_	x-axis translation (offset) value
ty_	y-axis translation (offset) value

◆ TransformMatrix() [3/3]

hdi::core::TransformMatrix::TransformMatrix ( const TransformMatrix & m_ )

TransformMatrix copy constructor.

Author: GW

Date: 08/2013

Parameters

m_	Existing TransformMatrix to copy

◆ ~TransformMatrix()

virtual hdi::core::TransformMatrix::~TransformMatrix ( )

virtual

TransformMatrix destructor.

Author: GW

Date: 08/2013

Member Function Documentation

◆ concat()

virtual void hdi::core::TransformMatrix::concat ( const TransformMatrix & matrix2_ )

virtual

Concatenates one matrix with another.

Author: GW

Date: 08/2013

Parameters

matrix2_ Second matrix to concatenate with the target matrix

◆ concatRotate()

virtual void hdi::core::TransformMatrix::concatRotate ( const Angle & angle_ )

virtual

Concatenates rotation values to an existing matrix.

Author: GW

Date: 08/2013

Parameters

angle_ Amount to rotate about the origin

◆ concatScale()

virtual void hdi::core::TransformMatrix::concatScale	(	const double	sx_,
		const double	sy_
	)

virtual

Concatenates scale values to an existing matrix.

Author: GW

Date: 08/2013

Parameters

sx_	Amount to scale in the x-direction (1.0 being the current size)
sy_	Amount to scale in the y-direction (1.0 being the current size)

◆ concatTranslate()

virtual void hdi::core::TransformMatrix::concatTranslate	(	const double	tx_,
		const double	ty_
	)

virtual

Concatenates translation values to an existing matrix.

Author: GW

Date: 08/2013

Parameters

tx_	Amount to offset along the x-axis
ty_	Amount to offset along the y-axis

Note: Negative values go toward 0.0 if the object to be transformed has a positive x and/or y value; positive values go away from 0.0

◆ degenerate()

virtual bool hdi::core::TransformMatrix::degenerate ( ) const

virtual

Gets whether the target matrix is degenerate.

Author: GW

Date: 08/2013

Returns: true for a degenerate matrix (has a determinant of 0), or false otherwise

◆ determinant()

virtual double hdi::core::TransformMatrix::determinant ( ) const

virtual

Gets the determinant of the target matrix.

Author: GW

Date: 08/2013

Returns: Determinant value of the matrix

◆ invert()

virtual bool hdi::core::TransformMatrix::invert ( TransformMatrix & inverse__ ) const

virtual

Inverts a target matrix.

If the inverse of the target matrix were concatenated with the target itself, the result would be an identity matrix

Author: GW

Date: 08/2013

Parameters

inverse__ Return-by-reference variable for the inverted matrix

Returns: true if inversion is possible and was successfully performed, false otherwise

Note: Inversion cannot be peformed when the target matrix is degenerate. In that case, the inverse__ argument will be set to an identity matrix and false is returned.

◆ isIdentity()

virtual bool hdi::core::TransformMatrix::isIdentity ( ) const

virtual

Gets whether a TransformMatrix currently has its entries set to that of an identity matrix.

Author: GW

Date: 08/2013

Returns: true if the matrix values are those of an identity matrix, or false otherwise

◆ operator!=()

virtual bool hdi::core::TransformMatrix::operator!= ( const TransformMatrix & rhs_ ) const

virtual

Compares two matrices for inequality.

Author: GW

Date: 08/2013

Parameters

rhs_	Righthand side of the != operator; the matrix to compare against

Returns: true if any fields of both matrices are unequal to each other, or false otherwise

◆ operator*()

virtual TransformMatrix hdi::core::TransformMatrix::operator* ( const TransformMatrix & rhs_ ) const

virtual

Multiplies two matrices together.

Author: GW

Date: 08/2013

Parameters

rhs_	Righthand side of the * operator; the matrix to multiply with

Returns: A new TransformMatrix object containing the values of the fields from this and rhs_ multiplied together.

◆ operator*=()

virtual TransformMatrix & hdi::core::TransformMatrix::operator*= ( const TransformMatrix & rhs_ )

virtual

Multiplies and assigns (concatenates) one matrix with another.

Author: GW

Date: 08/2013

Parameters

rhs_	Righthand side of the *= operator; the matrix to multiply with

Returns: The target TransformMatrix object, but updated with the values of the fields from this and rhs_ multiplied together.

◆ operator=()

virtual TransformMatrix & hdi::core::TransformMatrix::operator= ( const TransformMatrix & rhs_ )

virtual

Sets a target matrix to have the same values as another.

Author: GW

Date: 08/2013

Parameters

rhs_	Righthand side of the = operator; the matrix to pull values from

Returns: The target matrix, but with its values equaling those from rhs_

◆ operator==()

virtual bool hdi::core::TransformMatrix::operator== ( const TransformMatrix & rhs_ ) const

virtual

Compares two matrices for equality.

Author: GW

Date: 08/2013

Parameters

rhs_	Righthand side of the == operator; the matrix to compare against

Returns: true if all fields of both matrices are binary equal to each other, or false otherwise

◆ setIdentity()

virtual void hdi::core::TransformMatrix::setIdentity ( )

virtual

Sets a TransformMatrix object's entries to that of an identity matrix.

Author: GW

Date: 08/2013

◆ setRotate()

virtual void hdi::core::TransformMatrix::setRotate ( const Angle & angle_ )

virtual

Sets the rotation values, about the origin, of a matrix.

Author: GW

Date: 08/2013

Parameters

angle_ Amount to rotate about the origin

◆ setScale()

virtual void hdi::core::TransformMatrix::setScale	(	const double	sx_,
		const double	sy_
	)

virtual

Sets the scale values, from the origin, of a matrix.

Author: GW

Date: 08/2013

Parameters

sx_	Amount to scale in the x-direction (1.0 being the current size)
sy_	Amount to scale in the y-direction (1.0 being the current size)

◆ setTranslate()

virtual void hdi::core::TransformMatrix::setTranslate	(	const double	tx_,
		const double	ty_
	)

virtual

Sets the translation values of a matrix.

Author: GW

Date: 08/2013

Parameters

tx_	Amount to offset along the x-axis
ty_	Amount to offset along the y-axis

Note: Negative values go toward 0.0 if the object to be transformed has a positive x and/or y value; positive values go away from 0.0

Public Member Functions

Public Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ TransformMatrix() [1/3]

◆ TransformMatrix() [2/3]

◆ TransformMatrix() [3/3]

◆ ~TransformMatrix()

Member Function Documentation

◆ concat()

◆ concatRotate()

◆ concatScale()

◆ concatTranslate()

◆ degenerate()

◆ determinant()

◆ invert()

◆ isIdentity()

◆ operator!=()

◆ operator*()

◆ operator*=()

◆ operator=()

◆ operator==()

◆ setIdentity()

◆ setRotate()

◆ setScale()

◆ setTranslate()