Interface IGDIPlus.IGPMatrix

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Package: SignalLabBasicPkg

Unit: IGDIPlus

Contents 1 Syntax 1.1 Delphi: 2 Summary 3 Description 4 Properties 5 Methods

Syntax

Delphi:

type IGPMatrix = interface

Summary

Interface to a TGPMatrix object.

Description

Defines interface to a TGPMatrix object.

A TGPMatrix object represents a 3×3 matrix that, in turn, represents an affine transformation. A Matrix object stores only six of the 9 numbers in a 3×3 matrix because all 3×3 matrices that represent affine transformations have the same third column (0, 0, 1).

Properties

• Elements - Gets or sets the elements of the matrix.

Methods

• function GetNativeMatrix() : GpMatrix
• function Clone() : TGPMatrix - Creates a new Matrix object that is a copy of this Matrix object.
• function GetElements() : TGPMatrixParams - Returns the elements of the matrix.
• function SetElements(m11 : Single; m12 : Single; m21 : Single; m22 : Single; dx : Single; dy : Single) : TGPMatrix - Sets the elements of the matrix.
• function SetElements(AElements : TGPMatrixParams) : TGPMatrix - Sets the elements of the matrix.
• procedure SetElementsProp(AElements : TGPMatrixParams)
• function OffsetX() : Single - Returns the horizontal translation value of the matrix, which is the element in row 3, column 1.
• function OffsetY() : Single - Returns the vertical translation value of the matrix, which is the element in row 3, column 2.
• function Reset() : TGPMatrix - Updates this matrix with the elements of the identity matrix.
• function Multiply(matrix : IGPMatrix; order : TGPMatrixOrder) : TGPMatrix - Updates the matrix with the product of itself and another matrix.
• function Translate(offsetX : Single; offsetY : Single; order : TGPMatrixOrder) : TGPMatrix - Updates the matrix with the product of itself and a translation matrix.
• function Scale(scaleX : Single; scaleY : Single; order : TGPMatrixOrder) : TGPMatrix - Updates the matrix with the product of itself and a scaling matrix.
• function Rotate(angle : Single; order : TGPMatrixOrder) : TGPMatrix - Updates the matrix with the product of itself and a rotation matrix.
• function RotateAt(angle : Single; center : TGPPointF; order : TGPMatrixOrder) : TGPMatrix - Updates the matrix with the product of itself and a matrix that represents rotation about a specified point.
• function Shear(shearX : Single; shearY : Single; order : TGPMatrixOrder) : TGPMatrix - Updates the matrix with the product of itself and a shearing matrix.
• function Invert() : TGPMatrix - Replaces the elements of the matrix with the elements of its inverse.
• function TransformPointF(var point : TGPPointF) : TGPMatrix - Multiplies point by the matrix.
• function TransformPoint(var point : TGPPoint) : TGPMatrix - Multiplies point by the matrix.
• function TransformPointsF(var pts : array) : TGPMatrix
• function TransformPoints(var pts : array) : TGPMatrix
• function TransformVectorsF(var pts : array) : TGPMatrix
• function TransformVectors(var pts : array) : TGPMatrix
• function IsInvertible() : Boolean - Determines whether the matrix is invertible.
• function IsIdentity() : Boolean - Determines whether the matrix is the identity matrix.
• function Equals(matrix : IGPMatrix) : Boolean - Determines whether the elements of this matrix are equal to the elements of another matrix.