Strokes.Transform 方法 (Matrix)

發行項
10/29/2008

將線性轉換套用至 Strokes 集合，而不影響畫筆寬度。

命名空間： Microsoft.Ink
組件： Microsoft.Ink (在 Microsoft.Ink.dll 中)

語法

'宣告
Public Sub Transform ( _
    inkTransform As Matrix _
)
'用途
Dim instance As Strokes
Dim inkTransform As Matrix

instance.Transform(inkTransform)

public void Transform(
    Matrix inkTransform
)

public:
void Transform(
    Matrix^ inkTransform
)

public void Transform(
    Matrix inkTransform
)

public function Transform(
    inkTransform : Matrix
)

參數

inkTransform
型別：System.Drawing.Drawing2D.Matrix
要在 Strokes 集合上使用的 System.Drawing.Drawing2D.Matrix (英文) 轉換。

備註

轉換會套用至點，但不會套用至畫筆寬度。若要設定轉換中包含畫筆寬度的值，請使用這個方法的 Transform(Matrix, Boolean) 多載。

線性轉換可能表示縮放、旋轉、轉譯及轉換的組合。

範例

在這個範例中，附加至 InkOverlay 物件的 Strokes 集合會旋轉 180 度。旋轉時，會繞著 Strokes 集合之週框方塊的中心進行旋轉。

' Access to the Strokes property returns a copy of the Strokes object.
' This copy must be implicitly (via using statement) or explicitly
' disposed of in order to avoid a memory leak.
Using allStrokes As Strokes = mInkOverlay.Ink.Strokes

    Dim inkTransform As Matrix = New Matrix()
    Dim bounds As Rectangle = allStrokes.GetBoundingBox()
    Dim center As PointF = _
        New PointF(0.5F * (bounds.Left + bounds.Right), _
                   0.5F * (bounds.Top + bounds.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 strokes
    allStrokes.Transform(inkTransform)
End Using

// Access to the Strokes property returns a copy of the Strokes object.
// This copy must be implicitly (via using statement) or explicitly
// disposed of in order to avoid a memory leak.
using (Strokes allStrokes = mInkOverlay.Ink.Strokes)
{
    Matrix inkTransform = new Matrix();
    Rectangle bounds = allStrokes.GetBoundingBox();
    PointF center = new PointF(0.5f * (bounds.Left + bounds.Right),
                               0.5f * (bounds.Top + bounds.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 strokes
    allStrokes.Transform(inkTransform);
}