Class PdfMatrix

A 2D affine transformation matrix in PDF convention. Transforms point (x,y) as: x' = Ax + Cy + E, y' = Bx + Dy + F.

Operations use post-multiplication (each operation is applied AFTER the current transform), which means: Identity.Translate(tx,ty).Rotate(θ) places the drawing origin at (tx,ty) then rotates the axes by θ around that origin.

Inheritance

object

PdfMatrix

Inherited Members

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

object.GetType()

Namespace: DRIT.Pdf.Content

Assembly: DRIT.Pdf.dll

Syntax

public sealed class PdfMatrix

Constructors

PdfMatrix()

Initializes a new identity PdfMatrix.

Declaration

public PdfMatrix()

PdfMatrix(double, double, double, double, double, double)

Initializes a new PdfMatrix with the specified components.

Declaration

public PdfMatrix(double a, double b, double c, double d, double e, double f)

Parameters

Type	Name	Description
double	a
double	b
double	c
double	d
double	e
double	f

Fields

A

Horizontal scaling component (a in matrix notation).

Declaration

public double A

Field Value

Type	Description
double

B

Horizontal scaling component (a in matrix notation).

Declaration

public double B

Field Value

Type	Description
double

C

Horizontal scaling component (a in matrix notation).

Declaration

public double C

Field Value

Type	Description
double

D

Horizontal scaling component (a in matrix notation).

Declaration

public double D

Field Value

Type	Description
double

E

Horizontal scaling component (a in matrix notation).

Declaration

public double E

Field Value

Type	Description
double

F

Horizontal scaling component (a in matrix notation).

Declaration

public double F

Field Value

Type	Description
double

Properties

Identity

Returns a new identity matrix.

Declaration

public static PdfMatrix Identity { get; }

Property Value

Type	Description
PdfMatrix

Methods

Concat(PdfMatrix)

Return a new matrix that is this matrix post-multiplied by other. The result maps first by this, then by other.

Declaration

public PdfMatrix Concat(PdfMatrix other)

Parameters

Type	Name	Description
PdfMatrix	other

Returns

Type	Description
PdfMatrix

CreateTranslation(double, double)

Returns a new translation matrix.

Declaration

public static PdfMatrix CreateTranslation(double tx, double ty)

Parameters

Type	Name	Description
double	tx
double	ty

Returns

Type	Description
PdfMatrix

Rotate(double)

Post-multiply by a rotation (counter-clockwise, degrees).

Declaration

public void Rotate(double degrees)

Parameters

Type	Name	Description
double	degrees

Rotate(double, double, double)

Post-multiply by a rotation around a center point.

Declaration

public void Rotate(double degrees, double cx, double cy)

Parameters

Type	Name	Description
double	degrees
double	cx
double	cy

Scale(double, double)

Post-multiply by a scale.

Declaration

public void Scale(double sx, double sy)

Parameters

Type	Name	Description
double	sx
double	sy

Scale(double, double, double, double)

Post-multiply by a scale around a center point.

Declaration

public void Scale(double sx, double sy, double cx, double cy)

Parameters

Type	Name	Description
double	sx
double	sy
double	cx
double	cy

Transform(ref PdfRect)

Transform a rectangle by applying this matrix to all four corners and returning the axis-aligned bounding box of the results.

Declaration

public void Transform(ref PdfRect bounds)

Parameters

Type	Name	Description
PdfRect	bounds

Transform(double, double)

Transform a point using this matrix.

Declaration

public (double x, double y) Transform(double lx, double ly)

Parameters

Type	Name	Description
double	lx
double	ly

Returns

Type	Description
(double X, double Y)

Translate(double, double)

Post-multiply by a translation.

Declaration

public void Translate(double tx, double ty)

Parameters

Type	Name	Description
double	tx
double	ty