InkTransform class
Represents a 3x3 matrix that, in turn, represents an affine transformation.
InkTransform has these types of members:
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 |
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| Library |
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