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Matrix.ScaleAt(Double, Double, Double, Double) Metod

Definition

Skalar detta Matrix efter den angivna mängden om den angivna punkten.

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)

Parametrar

scaleX
Double

Hur mycket detta ska skalas Matrix längs x-axeln.

scaleY
Double

Hur mycket detta ska skalas Matrix längs y-axeln.

centerX
Double

X-koordinaten för skalningsåtgärdens mittpunkt.

centerY
Double

y-koordinaten för skalningsåtgärdens mittpunkt.

Exempel

I följande exempel visas hur du skalar en Matrix struktur.


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;
}

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