Stroke.Transform Method (Matrix)

Article
10/19/2012

Applies a linear transformation to a Stroke object, not affecting the pen width.

Namespace: Microsoft.Ink
Assembly: Microsoft.Ink (in Microsoft.Ink.dll)

Syntax

'Declaration
Public Sub Transform ( _
    inkTransform As Matrix _
)
'Usage
Dim instance As Stroke 
Dim inkTransform As Matrix

instance.Transform(inkTransform)

public void Transform(
    Matrix inkTransform
)

public:
void Transform(
    Matrix^ inkTransform
)

public function Transform(
    inkTransform : Matrix
)

Parameters

inkTransform
Type: System.Drawing.Drawing2D.Matrix

The System.Drawing.Drawing2D.Matrix transform to use on the Stroke object.

Remarks

The transformation applies to the points, but not the pen width. To set a value that includes the pen width in the transformation, use the Transform(Matrix, Boolean) overload of this method.

The linear transform can represent scaling, rotation, translation, and combinations of transformations.

Examples

This C# example rotates a Stroke object, theStroke, by 180 degrees around the center of the Stroke object's bounding box.

using System.Drawing.Drawing2D;
//...
Matrix inkTransform = new Matrix();
Rectangle inkBounds = theStroke.GetBoundingBox();
PointF center = new PointF(0.5f * (inkBounds.Left + inkBounds.Right),
                           0.5f * (inkBounds.Top + inkBounds.Bottom));
// Translate to center of bounding box
inkTransform.Translate(center.X, center.Y);
// Rotate by 180 degrees
inkTransform.Rotate(180f);
// Translate back
inkTransform.Translate(-center.X, -center.Y);
// Transform stroke
theStroke.Transform(inkTransform);

This Microsoft Visual Basic .NET example rotates a Stroke object, theStroke, by 180 degrees around the center of the Stroke object's bounding box.

Imports System.Drawing.Drawing2D
'...
Dim inkTransform As New Matrix()
Dim inkBounds As Rectangle = theStroke.GetBoundingBox()
Dim center As New PointF(0.5F * (inkBounds.Left + inkBounds.Right), _
                         0.5F * (inkBounds.Top + inkBounds.Bottom))
'Translate to center of bounding box
inkTransform.Translate(center.X, center.Y)
'Rotate by 180 degrees
inkTransform.Rotate(180.0F)
'Translate back
inkTransform.Translate(-center.X, -center.Y)
'Transform stroke
theStroke.Transform(inkTransform)
n

Platforms

Windows 7, Windows Vista, Windows Server 2008 R2, Windows Server 2008

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Framework

Supported in: 3.0

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