CIFlashTransition Class
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.
A CITransitionFilter that presents a starburst-like flash.
public class CIFlashTransition : CoreImage.CITransitionFilter, CoreImage.ICIFlashTransitionProtocol, IDisposabletype CIFlashTransition = class
inherit CITransitionFilter
interface ICIFlashTransitionProtocol
interface INativeObject
interface IDisposable
interface ICIFilterProtocol
interface ICITransitionFilterProtocol- Inheritance
- Implements
Remarks
The following example shows this filter in use
// Create the CIImage from a file
CIImage heron = CIImage.FromCGImage (UIImage.FromFile ("heron.jpg").CGImage);
CIImage clouds = CIImage.FromCGImage (UIImage.FromFile ("clouds.jpg").CGImage);
// Create a CIFlashTransition filter with the input image
var flash_transition = new CIFlashTransition ()
{
Image = heron,
TargetImage = clouds,
Time = 0.8f
};
// Get the altered image from the filter
var output = flash_transition.OutputImage;
// To render the results, we need to create a context, and then
// use one of the context rendering APIs, in this case, we render the
// result into a CoreGraphics image, which is merely a useful representation
//
var context = CIContext.FromOptions (null);
var cgimage = context.CreateCGImage (output, output.Extent);
// The above cgimage can be added to a screen view, for example, this
// would add it to a UIImageView on the screen:
myImageView.Image = UIImage.FromImage (cgimage);
With the following image input:
Produces the following output:
"canon" © 2012 cuatrok77 hernandez, used under a Creative Commons Attribution-ShareAlike license: https://creativecommons.org/licenses/by-sa/3.0/
"Sunrise near Atkeison Plateau" © 2012 Charles Atkeison, used under a Creative Commons Attribution-ShareAlike license: https://creativecommons.org/licenses/by-sa/3.0/
Constructors
| Name | Description |
|---|---|
| CIFlashTransition() |
Creates a new CIFlashTransition with default values. |
| CIFlashTransition(NativeHandle) |
A constructor used when creating managed representations of unmanaged objects. Called by the runtime. |
| CIFlashTransition(NSCoder) |
A constructor that initializes the object from the data stored in the unarchiver object. |
| CIFlashTransition(NSObjectFlag) |
Constructor to call on derived classes to skip initialization and merely allocate the object. |
Properties
| Name | Description |
|---|---|
| AccessibilityAttributedUserInputLabels | (Inherited from NSObject) |
| AccessibilityRespondsToUserInteraction | (Inherited from NSObject) |
| AccessibilityTextualContext | (Inherited from NSObject) |
| AccessibilityUserInputLabels | (Inherited from NSObject) |
| Attributes |
Configurable attributes of the filter. (Inherited from CIFilter) |
| Class | (Inherited from NSObject) |
| ClassHandle |
The Objective-C class handle for this class. (Inherited from CIFilter) |
| Color |
Gets or sets the color of the flash. |
| DebugDescription | (Inherited from NSObject) |
| Description | (Inherited from NSObject) |
| ExposedBindings | (Inherited from NSObject) |
| FadeThreshold |
Gets or sets the threshold at which the flash starts or stops appearing. |
| Handle |
Handle (pointer) to the unmanaged object representation. (Inherited from NSObject) |
| InputCenter |
Gets or set the center of the flash. |
| InputExtent |
Gets or sets a vector of the form (x,y,w,h) that represents the rectangular extent of the flash. |
| InputImage |
Gets or sets an image to filter. |
| InputKeys |
Gets an array that contains the names of the input keys for the filter. (Inherited from CIFilter) |
| IsDirectBinding | (Inherited from NSObject) |
| IsProxy | (Inherited from NSObject) |
| Item[NSString] |
Gets the value that is identified by |
| MaxStriationRadius |
Gets or sets the maximum radius of the flash effect. |
| Name |
Gets the filter name. (Inherited from CIFilter) |
| OutputImage | |
| OutputKeys |
Gets an array that contains the names of the output keys for the filter. (Inherited from CIFilter) |
| RetainCount | (Inherited from NSObject) |
| Self | (Inherited from NSObject) |
| StriationContrast |
Gets or sets the striation contrast. |
| StriationStrength |
Gets or sets the strength of the striations in the flash. |
| Superclass | (Inherited from NSObject) |
| SuperHandle |
Handle used to represent the methods in the base class for this NSObject. (Inherited from NSObject) |
| TargetImage |
The image that will be displayed at the end of the transition. |
| Time |
Gets or sets the current time in the transition. |
| Zone | (Inherited from NSObject) |