ColorMatrix 构造函数

定义

命名空间:

System.Drawing.Imaging

程序集:

System.Drawing.Common.dll

包:

System.Drawing.Common v8.0.0

初始化 ColorMatrix 类的新实例。

重载

ColorMatrix()	初始化 ColorMatrix 类的新实例。
ColorMatrix(Single[][])	使用指定矩阵 newColorMatrix 中的元素初始化 ColorMatrix 类的新实例。

ColorMatrix()

Source:

ColorMatrix.cs

初始化 ColorMatrix 类的新实例。

public:
 ColorMatrix();

public ColorMatrix ();

Public Sub New ()

ColorMatrix(Single[][])

Source:

ColorMatrix.cs

重要

此 API 不符合 CLS。

使用指定矩阵 newColorMatrix 中的元素初始化 ColorMatrix 类的新实例。

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()())

参数

newColorMatrix

Single[][]

新 ColorMatrix 的元素值。

属性

CLSCompliantAttribute

示例

下面的代码示例演示如何构造和使用 ColorMatrix。 若要运行此示例，请将代码粘贴到 Windows 窗体中，并从作为 传递ePaintEventArgs的窗体Paint的事件处理方法调用 RotateColors 。

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