DigikamEditorPerspectiveToolPlugin::PerspectiveMatrix Class Reference

Public Member Functions
double	determinant () const
void	invert ()
void	multiply (const PerspectiveMatrix &matrix1)
	PerspectiveMatrix ()
void	scale (double x, double y)
void	transformPoint (double x, double y, double *newx, double *newy) const
void	translate (double x, double y)

Public Attributes
double	coeff [3][3]

Constructor & Destructor Documentation

PerspectiveMatrix()

DigikamEditorPerspectiveToolPlugin::PerspectiveMatrix::PerspectiveMatrix ( )

explicit

PerspectiveMatrix:

Initializes matrix to the identity matrix.

References coeff.

Member Function Documentation

determinant()

double DigikamEditorPerspectiveToolPlugin::PerspectiveMatrix::determinant

(

)

const

determinant:

Calculates the determinant of this matrix.

Returns: The determinant.

References coeff.

Referenced by invert().

invert()

void DigikamEditorPerspectiveToolPlugin::PerspectiveMatrix::invert

(

)

invert:

Inverts this matrix.

References coeff, determinant(), and Digikam::inv().

multiply()

void DigikamEditorPerspectiveToolPlugin::PerspectiveMatrix::multiply

(

const PerspectiveMatrix &

matrix1

)

multiply:

Parameters

matrix1

The other input matrix.

Multiplies this matrix with another matrix

References coeff, and Digikam::Matrix::matrix().

scale()

void DigikamEditorPerspectiveToolPlugin::PerspectiveMatrix::scale	(	double	x,
		double	y
	)

scale:

Parameters

x	X scale factor.
y	Y scale factor.

Scales the matrix by x and y

References coeff.

transformPoint()

void DigikamEditorPerspectiveToolPlugin::PerspectiveMatrix::transformPoint	(	double	x,
		double	y,
		double *	newx,
		double *	newy
	)		const

transformPoint:

Parameters

x	The source X coordinate.
y	The source Y coordinate.
newx	The transformed X coordinate.
newy	The transformed Y coordinate.

Transforms a point in 2D as specified by the transformation matrix.

References coeff.

translate()

void DigikamEditorPerspectiveToolPlugin::PerspectiveMatrix::translate	(	double	x,
		double	y
	)

translate:

Parameters

x	Translation in X direction.
y	Translation in Y direction.

Translates the matrix by x and y.

References coeff.

Member Data Documentation

coeff

double DigikamEditorPerspectiveToolPlugin::PerspectiveMatrix::coeff[3][3]

coeff:

The 3x3 matrix data

Referenced by determinant(), invert(), multiply(), PerspectiveMatrix(), scale(), transformPoint(), and translate().

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

• core/dplugins/editor/transform/perspective/perspectivematrix.h
• core/dplugins/editor/transform/perspective/perspectivematrix.cpp