語言

Matrix.ScaleAt(Double, Double, Double, Double) 方法

定義

命名空間:
System.Windows.Media
組件:
WindowsBase.dll

以指定點的大小來縮 Matrix 放。

public:
 void ScaleAt(double scaleX, double scaleY, double centerX, double centerY);
public void ScaleAt(double scaleX, double scaleY, double centerX, double centerY);
member this.ScaleAt : double * double * double * double -> unit
Public Sub ScaleAt (scaleX As Double, scaleY As Double, centerX As Double, centerY As Double)

參數

scaleX
Double

這是沿著 x 軸縮放 Matrix 的數量。

scaleY
Double

這是沿著 y 軸縮放的 Matrix 量。

centerX
Double

即刻度運算中心點的 x 座標。

centerY
Double

即刻度運算中心點的 y 座標。

範例

以下範例展示了如何縮放 Matrix 結構。


private Matrix scaleExample()
{
    Matrix myMatrix = new Matrix(5, 10, 15, 20, 25, 30);
    
    // Scale myMatrix by a horizontal factor of 2
    // and a vertical factor of 4 about the origin.
    // After this operation,
    // myMatrix is equal to (10, 40, 30, 80, 50, 120)
    myMatrix.Scale(2, 4);
    
    return myMatrix;
}

private Matrix scaleAboutPointExample()
{
    Matrix myMatrix = new Matrix(5, 10, 15, 20, 25, 30);
    
    // Scale myMatrix by a horizontal factor of 2
    // and a vertical factor of 4 about the 
    // point (100,100).
    // After this operation,
    // myMatrix is equal to (10, 40, 30, 80, -50, -180)
    myMatrix.ScaleAt(2, 4, 100, 100);
    
    return myMatrix;
}

適用於