CIFilter and, cIImage classes, which describe filters and their input and output.
This chapter covers the key concepts for working with these classes to apply filters and render results.
Extent, colorSpace: colorSpace) esent(currentDrawable) / 4 mmit Obtain a Metal drawable texture to render into and a command buffer to encode rendering commands.(For the macOS Game template, you can make similar modifications to the mouseDown: method.) Listing 1-5 Applying filters in SpriteKit override func touchesBegan(touches: Set UITouch, withEvent event: UIEvent?) for touch in touches let sprite tScale(0.5) sprite.If youre building an app that renders graphics with Metal, or if you want to leverage Metal to get real-time performance for animating reduction scuf gaming filter output or filtering animated input (such as live video use a Metal device to create your Core Image context.(In macOS, use the CIContext property of the current NSGraphicsContext object instead.) For information on CoreGraphics contexts, un cadeau pour diane mots croisés see Quartz 2D Programming Guide.Reading image data from a URL is just one of many ways to create an image object.For the complete list of reduction filters, query the CICategoryReduction category.Let colorSpace CGColorSpaceCreateDeviceRGB override func viewDidLoad super.viewDidLoad device mtlcreateSystemDefaultDevice / 3 commandQueue wCommandQueue ifsi aubenas concours let view self.view as!Processing Still Images in UIKit and AppKit UIKit and AppKit provide easy ways to add Core Image processing to still images, whether those images appear in your apps UI or are part of its workflow.Location(in: self ) peatForever(.rotate(byAngle: 1, duration:1) let effect SKEffectNode dChild(sprite) ouldEnableEffects true lter CIFilter(name: "CIPixellate withInputParameters: kCIInputScaleKey:.0) self.addChild(effect) Note that the SKScene class itself is a subclass of SKEffectNode, so you can also apply a Core Image filter to an entire SpriteKit scene.(For general information on compositions, see Editing in AVFoundation Programming Guide.) You can use an AVVideoComposition object to apply Core Image filters to each frame of a video during playback or export, as shown in Listing 1-4.These objects dont directly represent image bitmap datainstead, a CIImage object is a recipe for producing an image.Texture, commandBuffer: commandBuffer, bounds: inputImage.
For the complete list of transition filters, query the CICategoryTransition category.
Configure the filters input parameters, including the input image sourced from a Metal texture.
You can create a Core Image image object from nearly any source of image data, including: URLs referencing image files to be loaded or NSData objects containing image file data Quartz2D, UIKit, or AppKit image representations ( CGImageRef, UIImage, or NSBitmapImageRep objects) Metal, OpenGL,.