ColorMatrix Constructors
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Initializes a new instance of the ColorMatrix class.
Overloads
ColorMatrix() |
Initializes a new instance of the ColorMatrix class. |
ColorMatrix(ReadOnlySpan<Single>) | |
ColorMatrix(Single[][]) |
Initializes a new instance of the ColorMatrix class using the elements in the specified matrix |
ColorMatrix()
- Source:
- ColorMatrix.cs
- Source:
- ColorMatrix.cs
- Source:
- ColorMatrix.cs
- Source:
- ColorMatrix.cs
- Source:
- ColorMatrix.cs
Initializes a new instance of the ColorMatrix class.
public:
ColorMatrix();
public ColorMatrix ();
Public Sub New ()
Applies to
ColorMatrix(ReadOnlySpan<Single>)
- Source:
- ColorMatrix.cs
- Source:
- ColorMatrix.cs
public:
ColorMatrix(ReadOnlySpan<float> newColorMatrix);
public ColorMatrix (scoped ReadOnlySpan<float> newColorMatrix);
new System.Drawing.Imaging.ColorMatrix : ReadOnlySpan<single> -> System.Drawing.Imaging.ColorMatrix
Public Sub New (newColorMatrix As ReadOnlySpan(Of Single))
Parameters
- newColorMatrix
- ReadOnlySpan<Single>
Applies to
ColorMatrix(Single[][])
- Source:
- ColorMatrix.cs
- Source:
- ColorMatrix.cs
- Source:
- ColorMatrix.cs
- Source:
- ColorMatrix.cs
- Source:
- ColorMatrix.cs
Important
This API is not CLS-compliant.
Initializes a new instance of the ColorMatrix class using the elements in the specified matrix newColorMatrix
.
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()())
Parameters
- newColorMatrix
- Single[][]
The values of the elements for the new ColorMatrix.
- Attributes
Examples
The following code example demonstrates how to construct and use a ColorMatrix. To run this example, paste the code into a Windows Form and call RotateColors
from the form's Paint event-handling method passing e
as PaintEventArgs.
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