InkTransform class

Represents a 3x3 matrix that, in turn, represents an affine transformation.

InkTransform has these types of members:

• Methods
• Properties

Methods

The InkTransform class has these methods.

Method	Description
GetTransform	Retrieves the InkTransform as 6 floats.
Reflect	Reflects the transform in either the horizontal or vertical directions.
Reset	Resets the transform to its original state.
Rotate	Rotates the transform by an angle measured in degrees, and optionally specifies a center point for the rotation.
ScaleTransform	Scales the transform by X and Y factors.
SetTransform	Modifies the InkTransform using 6 floats.
Shear	Applies a shear with the specified horizontal and vertical factors.
Translate	Moves the transform by the specified horizontal and vertical components.

Properties

The InkTransform class has these properties.

Property	Access type	Description
Data	Read/write	Gets or sets the Automation version of the WIN32 XFORM struct.
eDx	Read/write	Gets or sets the real number that specifies the element in the third row, first column.
eDy	Read/write	Gets or sets the real number that specifies the element in the third row, second column.
eM11	Read/write	Gets or sets the real number that specifies the element in the first row, first column.
eM12	Read/write	Gets or sets the real number that specifies the element in the first row, second column.
eM21	Read/write	Gets or sets the real number that specifies the element in the second row, first column.
eM22	Read/write	Gets or sets the real number that specifies the element in the second row, second column.

Remarks

This object can be instantiated by calling the CoCreateInstance method in C++.

The object stores only six of the nine numbers in a 3x3 matrix because all 3x3 matrices that represent affine transformations have the same third column (0, 0, 1). This object in turn is used to describe transformation operations such as moving, shearing, scaling, or rotating in an InkRenderer object, IInkStrokeDisp object, or InkStrokes collection.

Note

The InkTransform object correlates to the XFORM structure.

Requirements

Requirement	Value
Minimum supported client	Windows XP Tablet PC Edition [desktop apps only]
Minimum supported server	None supported
Header	Msinkaut.h (also requires Msinkaut_i.c)
Library	InkObj.dll