ColorMatrix Konstruktoren

Quelle:

ColorMatrix.cs

Quelle:

ColorMatrix.cs

Quelle:

ColorMatrix.cs

public:
 ColorMatrix();

public ColorMatrix ();

Public Sub New ()

Quelle:

ColorMatrix.cs

public:
 ColorMatrix(ReadOnlySpan<float> newColorMatrix);

public ColorMatrix (ReadOnlySpan<float> newColorMatrix);

new System.Drawing.Imaging.ColorMatrix : ReadOnlySpan<single> -> System.Drawing.Imaging.ColorMatrix

Public Sub New (newColorMatrix As ReadOnlySpan(Of Single))

Parameter

Quelle:

ColorMatrix.cs

Quelle:

ColorMatrix.cs

Quelle:

ColorMatrix.cs

public:
 ColorMatrix(cli::array <cli::array <float> ^> ^ newColorMatrix);

[System.CLSCompliant(false)]
public ColorMatrix (float[][] newColorMatrix);

[<System.CLSCompliant(false)>]
new System.Drawing.Imaging.ColorMatrix : single[][] -> System.Drawing.Imaging.ColorMatrix

Public Sub New (newColorMatrix As Single()())

Parameter

Attribute

CLSCompliantAttribute

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie eine ColorMatrixerstellt und verwendet wird. Fügen Sie zum Ausführen dieses Beispiels den Code in eine Windows Form ein, und rufen Sie RotateColors von der Ereignisbehandlungsmethode des Formulars Paint auf, die als PaintEventArgsübergeben e wird.

private void RotateColors(PaintEventArgs e)
{
    Bitmap image = new Bitmap("RotationInput.bmp");
    ImageAttributes imageAttributes = new ImageAttributes();
    int width = image.Width;
    int height = image.Height;
    float degrees = 60f;
    double r = degrees * System.Math.PI / 180; // degrees to radians

    float[][] colorMatrixElements = { 
        new float[] {(float)System.Math.Cos(r),  (float)System.Math.Sin(r),  0,  0, 0},
        new float[] {(float)-System.Math.Sin(r),  (float)-System.Math.Cos(r),  0,  0, 0},
        new float[] {0,  0,  2,  0, 0},
        new float[] {0,  0,  0,  1, 0},
        new float[] {0, 0, 0, 0, 1}};

    ColorMatrix colorMatrix = new ColorMatrix(colorMatrixElements);

    imageAttributes.SetColorMatrix(
       colorMatrix,
       ColorMatrixFlag.Default,
       ColorAdjustType.Bitmap);

    e.Graphics.DrawImage(image, 10, 10, width, height);

    e.Graphics.DrawImage(
       image,
       new Rectangle(150, 10, width, height),  // destination rectangle 
        0, 0,        // upper-left corner of source rectangle 
        width,       // width of source rectangle
        height,      // height of source rectangle
        GraphicsUnit.Pixel,
       imageAttributes);
}

Private Sub RotateColors(ByVal e As PaintEventArgs)
    Dim image As Bitmap = New Bitmap("RotationInput.bmp")
    Dim imageAttributes As New ImageAttributes()
    Dim width As Integer = image.Width
    Dim height As Integer = image.Height
    Dim degrees As Single = 60.0F
    Dim r As Double = degrees * System.Math.PI / 180 ' degrees to radians
    Dim colorMatrixElements As Single()() = { _
       New Single() {CSng(System.Math.Cos(r)), _
                     CSng(System.Math.Sin(r)), 0, 0, 0}, _
       New Single() {CSng(-System.Math.Sin(r)), _
                     CSng(-System.Math.Cos(r)), 0, 0, 0}, _
       New Single() {0, 0, 2, 0, 0}, _
       New Single() {0, 0, 0, 1, 0}, _
       New Single() {0, 0, 0, 0, 1}}

    Dim colorMatrix As New ColorMatrix(colorMatrixElements)

    imageAttributes.SetColorMatrix( _
       colorMatrix, _
       ColorMatrixFlag.Default, _
       ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(image, 10, 10, width, height)

    ' Pass in the destination rectangle (2nd argument), the upper-left corner 
    ' (3rd and 4th arguments), width (5th argument),  and height (6th 
    ' argument) of the source rectangle.
    e.Graphics.DrawImage( _
       image, _
       New Rectangle(150, 10, width, height), _
       0, 0, _
       width, _
       height, _
       GraphicsUnit.Pixel, _
       imageAttributes)
End Sub