oc版本
//万花筒模式 + (CGImageRef) getKaleidoscope:(CIContext *)context { CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage]; CIFilter * kaleidoscope = [CIFilter filterWithName:@"CIKaleidoscope"]; [kaleidoscope setDefaults]; [kaleidoscope setValue:image forKey:kCIInputimageKey]; [kaleidoscope setValue:[CIVector vectorWithX:5 Y:0] forKey:kCIInputCenterKey]; CIImage * result = [kaleidoscope valueForKey:kCIoUtputimageKey]; CGRect extent = [result extent]; CGImageRef cgImage = [context createCGImage:result fromrect:extent]; return cgImage; } //凹凸变形 + (CGImageRef) getBumpdistortion:(CIContext *)context { CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage]; CIFilter * bumpdistortion = [CIFilter filterWithName:@"CIBumpdistortion"]; [bumpdistortion setDefaults]; [bumpdistortion setValue:image forKey:kCIInputimageKey]; [bumpdistortion setValue:[CIVector vectorWithX:10 Y:5] forKey:kCIInputCenterKey]; [bumpdistortion setValue:@55.0f forKey:kCIInpuTradiusKey]; [bumpdistortion setValue:@(3.0f) forKey:kCIInputScaleKey]; CIImage * result = [bumpdistortion valueForKey:kCIoUtputimageKey]; CGRect extent = [result extent]; CGImageRef cgImage = [context createCGImage:result fromrect:extent]; return cgImage; } //色调调整 + (CGImageRef) getHueAdjust:(CIContext *)context { CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage]; CIFilter * hueAdjust = [CIFilter filterWithName:@"CIHueAdjust"]; [hueAdjust setValue:image forKey:kCIInputimageKey]; [hueAdjust setValue:@2.094f forKey:kCIInputAngleKey]; CIImage * result = [hueAdjust valueForKey:kCIoUtputimageKey]; CGRect extent = [result extent]; CGImageRef cgImage = [context createCGImage:result fromrect:extent]; return cgImage; } //变暗 + (CGImageRef) getGloom:(CIContext *) context { CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage]; CIFilter * gloom = [CIFilter filterWithName:@"CIGloom"]; [gloom setDefaults]; [gloom setValue:image forKey:kCIInputimageKey]; [gloom setValue:@5.0f forKey:kCIInpuTradiusKey]; [gloom setValue:@1.0f forKey:kCIInputIntensityKey]; CIImage * result = [gloom valueForKey:kCIoUtputimageKey]; CGRect extent = [result extent]; CGImageRef cgImage = [context createCGImage:result fromrect:extent]; return cgImage; } //深褐色调 + (CGImageRef) getSepiaTone:(CIContext *) context { CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage]; CIFilter * sepiaTone = [CIFilter filterWithName:@"CISepiaTone"]; [sepiaTone setDefaults]; [sepiaTone setValue:image forKey:kCIInputimageKey]; [sepiaTone setValue:@0.8f forKey:kCIInputIntensityKey]; CIImage * result = [sepiaTone valueForKey:kCIoUtputimageKey]; CGRect extent = [result extent]; CGImageRef cgImage = [context createCGImage:result fromrect:extent]; return cgImage; } //合成 + (CGImageRef) getAdditionCompositing:(CIContext *) context { CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage]; CIImage * image1 = [CIImage imageWithCGImage:[UIImage imageNamed:@"ren"].CGImage]; CIFilter * accordionFoldTransition = [CIFilter filterWithName:@"CIAdditionCompositing"]; [accordionFoldTransition setDefaults]; [accordionFoldTransition setValue:image forKey:kCIInputimageKey]; [accordionFoldTransition setValue:image1 forKey:kCIInputBackgroundImageKey]; CIImage * result = [accordionFoldTransition valueForKey:kCIoUtputimageKey]; CGRect extent = [result extent]; CGImageRef cgImage = [context createCGImage:result fromrect:extent]; return cgImage; } //高斯模糊 + (CGImageRef) getGaussianBlur:(CIContext *) context { CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage]; CIFilter * gaussianBlur = [CIFilter filterWithName:@"CIGaussianBlur"]; [gaussianBlur setDefaults]; [gaussianBlur setValue:image forKey:kCIInputimageKey]; [gaussianBlur setValue:@5.0f forKey:kCIInpuTradiusKey]; CIImage * result = [gaussianBlur valueForKey:kCIoUtputimageKey]; CGRect extent = [result extent]; CGImageRef cgImage = [context createCGImage:result fromrect:extent]; return cgImage; } //变焦模糊 + (CGImageRef) getZoomBlur:(CIContext *) context { CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage]; CIFilter * zoomBlur = [CIFilter filterWithName:@"CIZoomBlur"]; [zoomBlur setDefaults]; [zoomBlur setValue:image forKey:kCIInputimageKey]; [zoomBlur setValue:@10.0f forKey:@"inputAmount"]; [zoomBlur setValue:[CIVector vectorWithCGPoint:CGPointMake(10,10)] forKey:kCIInputCenterKey]; CIImage * result = [zoomBlur valueForKey:kCIoUtputimageKey]; CGRect extent = [result extent]; CGImageRef cgImage = [context createCGImage:result fromrect:extent]; return cgImage; } //白点调整 + (CGImageRef) getWhitePointAdjust:(CIContext *) context { CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage]; CIFilter * zoomBlur = [CIFilter filterWithName:@"CIWhitePointAdjust"]; [zoomBlur setDefaults]; [zoomBlur setValue:image forKey:kCIInputimageKey]; [zoomBlur setValue:[CIColor colorWithRed:1.0 green:0.5 blue:1.0 alpha:1.0] forKey:@"inputColor"]; CIImage * result = [zoomBlur valueForKey:kCIoUtputimageKey]; CGRect extent = [result extent]; CGImageRef cgImage = [context createCGImage:result fromrect:extent]; return cgImage; } //标签效应 + (CGImageRef) getVignetteEffect:(CIContext *) context { CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage]; CIFilter * zoomBlur = [CIFilter filterWithName:@"CIVignetteEffect"]; [zoomBlur setDefaults]; [zoomBlur setValue:image forKey:kCIInputimageKey]; [zoomBlur setValue:[CIVector vectorWithCGPoint:CGPointMake(10,10)] forKey:kCIInputCenterKey]; [zoomBlur setValue:@0.5f forKey:@"inputFalloff"]; [zoomBlur setValue:@1.0f forKey:@"inputIntensity"]; [zoomBlur setValue:@100.0f forKey:@"inpuTradius"]; CIImage * result = [zoomBlur valueForKey:kCIoUtputimageKey]; CGRect extent = [result extent]; CGImageRef cgImage = [context createCGImage:result fromrect:extent]; return cgImage; } //多个效果合成 + (CGImageRef) getMix:(CIContext *) context { CIImage * image = [CIImage imageWithCGImage:[UIImage imageNamed:@"Icon"].CGImage]; CIFilter * zoomBlur = [CIFilter filterWithName:@"CIVignetteEffect"]; [zoomBlur setDefaults]; [zoomBlur setValue:image forKey:kCIInputimageKey]; [zoomBlur setValue:[CIVector vectorWithCGPoint:CGPointMake(10,10)] forKey:kCIInputCenterKey]; [zoomBlur setValue:@0.5f forKey:@"inputFalloff"]; [zoomBlur setValue:@1.0f forKey:@"inputIntensity"]; [zoomBlur setValue:@100.0f forKey:@"inpuTradius"]; CIImage * result = [zoomBlur valueForKey:kCIoUtputimageKey]; CIFilter * gaussianBlur = [CIFilter filterWithName:@"CIGaussianBlur"]; [gaussianBlur setDefaults]; [gaussianBlur setValue:result forKey:kCIInputimageKey]; [gaussianBlur setValue:@5.0f forKey:kCIInpuTradiusKey]; result = [gaussianBlur valueForKey:kCIoUtputimageKey]; CGRect extent = [result extent]; CGImageRef cgImage = [context createCGImage:result fromrect:extent]; return cgImage; }
以上介绍了几个滤镜模式,如果想查询系统内置了多少种滤镜,可以执行以下代码查看:
//查看所有内置滤镜
NSArray *filterNames=[CIFilterfilterNamesInCategory:kCICategoryBuiltIn]; for (Nsstring *filterNamein filterNames) { CIFilter *filter=[CIFilterfilterWithName:filterName]; NSLog(@"\rfilter:%@\rattributes:%@",filterName,[filterattributes]); }
就拿CIZoomBlur滤镜模式来说,打印出来的信息,可以看到,里面定义了一些属性(每种滤镜,所含有的属性会有差别,在使用的时候,特别要注意)。
属性名称可以使用定义好的结构体成员kCIInputimageKey,或者直接@"inputimage"调用,都是表示输入的图片。inputimage对应的value里面定义了这个属性是什么类型的,属性描述等。如果需要其他滤镜模式的可以去查看。
swift版本
//万花筒模式 static func getKaleidoscope(context: CIContext) -> CGImageRef { let imageName = UIImage(named:"Icon")?.CGImage let image = CIImage(CGImage: (imageName)!) let kaleidoscope = CIFilter(name:"CIKaleidoscope"); kaleidoscope?.setDefaults(); kaleidoscope?.setValue(image,forKey: kCIInputimageKey); kaleidoscope?.setValue(CIVector(x: 5,y: 0),forKey: kCIInputCenterKey); let result = kaleidoscope?.valueForKey(kCIoUtputimageKey); let extent = result?.extent; let cgImage = context.createCGImage(result as! CIImage,fromrect: extent!) return cgImage } //凹凸变形 static func getBumpdistortion(context: CIContext) -> CGImageRef { let imageName = UIImage(named:"Icon")?.CGImage let image = CIImage(CGImage: (imageName)!) let bumpdistortion = CIFilter(name: "CIBumpdistortion") bumpdistortion?.setDefaults() bumpdistortion?.setValue(image,forKey: kCIInputimageKey) bumpdistortion?.setValue(CIVector(x: 10,y: 5),forKey: kCIInputCenterKey) bumpdistortion?.setValue(55.0,forKey: kCIInpuTradiusKey) bumpdistortion?.setValue(3.0,forKey: kCIInputScaleKey) let result = bumpdistortion?.valueForKey(kCIoUtputimageKey); let extent = result?.extent; let cgImage = context.createCGImage(result as! CIImage,fromrect: extent!) return cgImage } //色调调整 static func getHueAdjust(context: CIContext) -> CGImageRef { let imageName = UIImage(named:"Icon")?.CGImage let image = CIImage(CGImage: (imageName)!) let hueAdjust = CIFilter(name: "CIHueAdjust") hueAdjust?.setValue(image,forKey: kCIInputimageKey) hueAdjust?.setValue(2.094,forKey:kCIInputAngleKey) let result = hueAdjust?.valueForKey(kCIoUtputimageKey); let extent = result?.extent; let cgImage = context.createCGImage(result as! CIImage,fromrect: extent!) return cgImage } //变暗 static func getGloom(context: CIContext) -> CGImageRef { let imageName = UIImage(named:"Icon")?.CGImage let image = CIImage(CGImage: (imageName)!) let gloom = CIFilter(name: "CIGloom") gloom?.setDefaults() gloom?.setValue(image,forKey: kCIInputimageKey) gloom?.setValue(5.0,forKey: kCIInpuTradiusKey) gloom?.setValue(1.0,forKey: kCIInputIntensityKey) let result = gloom?.valueForKey(kCIoUtputimageKey); let extent = result?.extent; let cgImage = context.createCGImage(result as! CIImage,fromrect: extent!) return cgImage } //深褐色调 static func getSepiaTone(context: CIContext) -> CGImageRef { let imageName = UIImage(named:"Icon")?.CGImage let image = CIImage(CGImage: (imageName)!) let sepiaTone = CIFilter(name: "CISepiaTone") sepiaTone?.setDefaults() sepiaTone?.setValue(image,forKey: kCIInputimageKey) sepiaTone?.setValue(0.8,forKey: kCIInputIntensityKey) let result = sepiaTone?.valueForKey(kCIoUtputimageKey); let extent = result?.extent; let cgImage = context.createCGImage(result as! CIImage,fromrect: extent!) return cgImage } //合成 static func getAdditionCompositing(context: CIContext) -> CGImageRef { let imageName = UIImage(named:"Icon")?.CGImage let image = CIImage(CGImage: (imageName)!) let image1 = CIImage(CGImage: (UIImage(named:"ren")?.CGImage)!) let accordionFoldTransition = CIFilter(name: "CIAdditionCompositing"); accordionFoldTransition?.setDefaults() accordionFoldTransition?.setValue(image,forKey: kCIInputimageKey) accordionFoldTransition?.setValue(image1,forKey: kCIInputBackgroundImageKey) let result = accordionFoldTransition?.valueForKey(kCIoUtputimageKey); let extent = result?.extent; let cgImage = context.createCGImage(result as! CIImage,fromrect: extent!) return cgImage } //高斯模糊 static func getGaussianBlur(context: CIContext) -> CGImageRef { let imageName = UIImage(named:"Icon")?.CGImage let image = CIImage(CGImage: (imageName)!) let gaussianBlur = CIFilter(name: "CIGaussianBlur") gaussianBlur?.setDefaults() gaussianBlur?.setValue(image,forKey: kCIInputimageKey) gaussianBlur?.setValue(5.0,forKey: kCIInpuTradiusKey) let result = gaussianBlur?.valueForKey(kCIoUtputimageKey); let extent = result?.extent; let cgImage = context.createCGImage(result as! CIImage,fromrect: extent!) return cgImage } //变焦模糊 static func getZoomBlur(context: CIContext) -> CGImageRef { let imageName = UIImage(named:"Icon")?.CGImage let image = CIImage(CGImage: (imageName)!) let zoomBlur = CIFilter(name: "CIZoomBlur") zoomBlur?.setDefaults() zoomBlur?.setValue(image,forKey: kCIInputimageKey) zoomBlur?.setValue(10.0,forKey: "inputAmount") zoomBlur?.setValue(CIVector(x: 10,y: 10),forKey: kCIInputCenterKey) let result = zoomBlur?.valueForKey(kCIoUtputimageKey); let extent = result?.extent; let cgImage = context.createCGImage(result as! CIImage,fromrect: extent!) return cgImage } //白点调整 static func getWhitePointAdjust(context: CIContext) -> CGImageRef { let imageName = UIImage(named:"Icon")?.CGImage let image = CIImage(CGImage: (imageName)!) let whitePointAdjust = CIFilter(name: "CIWhitePointAdjust") whitePointAdjust?.setDefaults() whitePointAdjust?.setValue(image,forKey: kCIInputimageKey) whitePointAdjust?.setValue(CIColor(red: 1.0,green: 0.5,blue: 1.0,alpha: 1.0),forKey: "inputColor") let result = whitePointAdjust?.valueForKey(kCIoUtputimageKey); let extent = result?.extent; let cgImage = context.createCGImage(result as! CIImage,fromrect: extent!) return cgImage } //标签效应 static func getVignetteEffect(context: CIContext) -> CGImageRef { let imageName = UIImage(named:"Icon")?.CGImage let image = CIImage(CGImage: (imageName)!) let vignetteEffect = CIFilter(name: "CIVignetteEffect") vignetteEffect?.setDefaults() vignetteEffect?.setValue(image,forKey: kCIInputimageKey) vignetteEffect?.setValue(CIVector(x: 10,forKey: kCIInputCenterKey) vignetteEffect?.setValue(0.5,forKey: "inputFalloff") vignetteEffect?.setValue(1.0,forKey: "inputIntensity") vignetteEffect?.setValue(100.0,forKey: "inpuTradius") let result = vignetteEffect?.valueForKey(kCIoUtputimageKey); let extent = result?.extent; let cgImage = context.createCGImage(result as! CIImage,fromrect: extent!) return cgImage } //多个效果合成 static func getMix(context: CIContext) -> CGImageRef { let imageName = UIImage(named:"Icon")?.CGImage let image = CIImage(CGImage: (imageName)!) let vignetteEffect = CIFilter(name: "CIVignetteEffect") vignetteEffect?.setDefaults() vignetteEffect?.setValue(image,forKey: kCIInputimageKey) vignetteEffect?.setValue(0.5,forKey: "inpuTradius") var result = vignetteEffect?.valueForKey(kCIoUtputimageKey); let gaussianBlur = CIFilter(name: "CIGaussianBlur") gaussianBlur?.setDefaults() gaussianBlur?.setValue(result,forKey: kCIInpuTradiusKey) result = gaussianBlur?.valueForKey(kCIoUtputimageKey); let extent = result?.extent; let cgImage = context.createCGImage(result as! CIImage,fromrect: extent!) return cgImage }
以上介绍了几个滤镜模式,如果想查询系统内置了多少种滤镜,可以执行以下代码查看:
//查看所有内置滤镜
let filterNames = CIFilter.filterNamesInCategory(kCICategoryBuiltIn) for filterName in filterNames { let filter = CIFilter(name: filterName) print("\rfilter:\(filterName)\rattributes:\(filter?.attributes)") }
下面截取控制台输出的部分滤镜消息。
就拿CIZoomBlur滤镜模式来说,打印出来的信息,可以看到,里面定义了一些属性(每种滤镜,所含有的属性会有差别,在使用的时候,特别要注意)。
属性名称可以使用定义好的结构体成员kCIInputimageKey,或者直接"inputimage"调用,都是表示输入的图片。inputimage对应的value里面定义了这个属性是什么类型的,属性描述等。如果需要其他滤镜模式的可以去查看。
工程下载地址:http://download.csdn.net/detail/xiaopingping1234567/9458261原文地址:https://www.jb51.cc/swift/324348.html
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