ColorMatrix Class
Definition
Important
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4x5 matrix for transforming the color and alpha components of a Bitmap.
[Android.Runtime.Register("android/graphics/ColorMatrix", DoNotGenerateAcw=true)]
public class ColorMatrix : Java.Lang.Object[<Android.Runtime.Register("android/graphics/ColorMatrix", DoNotGenerateAcw=true)>]
type ColorMatrix = class
inherit Object- Inheritance
- Attributes
Remarks
4x5 matrix for transforming the color and alpha components of a Bitmap. The matrix can be passed as single array, and is treated as follows:
[ a, b, c, d, e,
f, g, h, i, j,
k, l, m, n, o,
p, q, r, s, t ]
When applied to a color [R, G, B, A], the resulting color is computed as:
R’ = a*R + b*G + c*B + d*A + e;
G’ = f*R + g*G + h*B + i*A + j;
B’ = k*R + l*G + m*B + n*A + o;
A’ = p*R + q*G + r*B + s*A + t;
That resulting color [R’, G’, B’, A’] then has each channel clamped to the 0 to 255 range.
The sample ColorMatrix below inverts incoming colors by scaling each channel by -1, and then shifting the result up by 255 to remain in the standard color space.
[ -1, 0, 0, 0, 255,
0, -1, 0, 0, 255,
0, 0, -1, 0, 255,
0, 0, 0, 1, 0 ]
Java documentation for android.graphics.ColorMatrix.
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.
Constructors
| ColorMatrix() |
Create a new colormatrix initialized to identity (as if reset() had been called). |
| ColorMatrix(ColorMatrix) |
Create a new colormatrix initialized with the specified colormatrix. |
| ColorMatrix(IntPtr, JniHandleOwnership) |
A constructor used when creating managed representations of JNI objects; called by the runtime. |
| ColorMatrix(Single[]) |
Create a new colormatrix initialized with the specified array of values. |
Properties
| Class |
Returns the runtime class of this |
| Handle |
The handle to the underlying Android instance. (Inherited from Object) |
| JniIdentityHashCode | (Inherited from Object) |
| JniPeerMembers | |
| PeerReference | (Inherited from Object) |
| ThresholdClass |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. |
| ThresholdType |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. |
Methods
| Clone() |
Creates and returns a copy of this object. (Inherited from Object) |
| Dispose() | (Inherited from Object) |
| Dispose(Boolean) | (Inherited from Object) |
| Equals(Object) |
Indicates whether some other object is "equal to" this one. (Inherited from Object) |
| GetArray() |
Return the array of floats representing this colormatrix. |
| GetHashCode() |
Returns a hash code value for the object. (Inherited from Object) |
| JavaFinalize() |
Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object) |
| Notify() |
Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object) |
| NotifyAll() |
Wakes up all threads that are waiting on this object's monitor. (Inherited from Object) |
| PostConcat(ColorMatrix) |
Concat this colormatrix with the specified postmatrix. |
| PreConcat(ColorMatrix) |
Concat this colormatrix with the specified prematrix. |
| Reset() |
Set this colormatrix to identity: |
| Set(ColorMatrix) |
Assign the src colormatrix into this matrix, copying all of its values. |
| Set(Single[]) |
Assign the array of floats into this matrix, copying all of its values. |
| SetConcat(ColorMatrix, ColorMatrix) |
Set this colormatrix to the concatenation of the two specified colormatrices, such that the resulting colormatrix has the same effect as applying matB and then applying matA. |
| SetHandle(IntPtr, JniHandleOwnership) |
Sets the Handle property. (Inherited from Object) |
| SetRGB2YUV() |
Set the matrix to convert RGB to YUV |
| SetRotate(Int32, Single) |
Set the rotation on a color axis by the specified values. |
| SetSaturation(Single) |
Set the matrix to affect the saturation of colors. |
| SetScale(Single, Single, Single, Single) |
Set this colormatrix to scale by the specified values. |
| SetYUV2RGB() |
Set the matrix to convert from YUV to RGB |
| ToArray<T>() | (Inherited from Object) |
| ToString() |
Returns a string representation of the object. (Inherited from Object) |
| UnregisterFromRuntime() | (Inherited from Object) |
| Wait() |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object) |
| Wait(Int64, Int32) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
| Wait(Int64) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
Explicit Interface Implementations
| IJavaPeerable.Disposed() | (Inherited from Object) |
| IJavaPeerable.DisposeUnlessReferenced() | (Inherited from Object) |
| IJavaPeerable.Finalized() | (Inherited from Object) |
| IJavaPeerable.JniManagedPeerState | (Inherited from Object) |
| IJavaPeerable.SetJniIdentityHashCode(Int32) | (Inherited from Object) |
| IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates) | (Inherited from Object) |
| IJavaPeerable.SetPeerReference(JniObjectReference) | (Inherited from Object) |
Extension Methods
| JavaCast<TResult>(IJavaObject) |
Performs an Android runtime-checked type conversion. |
| JavaCast<TResult>(IJavaObject) | |
| GetJniTypeName(IJavaPeerable) | |