struct · iOS 13.0+ · SDK 27.1
struct OptionsAn option set that represents `vImage_Flags`. You can also use this option set with the existing vImage API with the `flags` property. For example: vImageTentConvolve_ARGB8888(&src, &dst, nil, 0, 0, 11, 11, [0,0,0,0], vImage_Options([.backgroundColorFill, .doNotTile]).flags)
get doNotClamp(): vImage_Optionsstatic let doNotClamp: vImage.OptionsPass to disable clamping is some conversions to floating point formats. Use this if the input data may describe values outside [0,1] which should be preserved.
get hdrContent(): vImage_Optionsstatic let hdrContent: vImage.OptionsUse methods that are HDR-aware, capable of providing correct results for input images with pixel values outside the otherwise limited (typically [-2,2]) range. This may be slower.
get noAllocate(): vImage_Optionsstatic let noAllocate: vImage.OptionsPass this flag to prevent vImage from allocating additional storage.
get copyInPlace(): vImage_Optionsstatic let copyInPlace: vImage.OptionsCopy edge pixels. Convolution Only.
get imageExtend(): vImage_Optionsstatic let imageExtend: vImage.OptionsUse the nearest pixel for missing pixels.
get truncateKernel(): vImage_Optionsstatic let truncateKernel: vImage.OptionsUse only the part of the kernel that overlaps the image. For integer kernels, real_divisor = divisor * (sum of used kernel elements) / (sum of kernel elements). This should preserve image brightness at the edges. Convolution only.
get getTempBufferSize(): vImage_Optionsstatic let getTempBufferSize: vImage.OptionsThe function will return the number of bytes required for the temp buffer. If this value is negative, it is an error, per standard usage.
get backgroundColorFill(): vImage_Optionsstatic let backgroundColorFill: vImage.OptionsUse the background color for missing pixels.
get leaveAlphaUnchanged(): vImage_Optionsstatic let leaveAlphaUnchanged: vImage.OptionsOperate on red, green and blue channels only. Alpha is copied from source to destination. For Interleaved formats only
get highQualityResampling(): vImage_Optionsstatic let highQualityResampling: vImage.OptionsUse a higher quality, slower resampling filter for Geometry operations (shear, scale, rotate, affine transform, etc.)
get printDiagnosticsToConsole(): vImage_Optionsstatic let printDiagnosticsToConsole: vImage.OptionsSome functions such as vImageConverter_CreateWithCGImageFormat have so many possible error conditions that developers may need more help than a simple error code to diagnose problems. When this flag is set and an error is encountered, an informative error message will be logged to the Apple System Logger (ASL). The output should be visible in Console.app.
getFlags($self: vImage_Options): numbervar flags: vImage_Flags { get }get noFlags(): vImage_Optionsstatic let noFlags: vImage.Optionsinit(rawValue: number): vImage_Optionsinit(rawValue: vImage_Flags)Creates a new option set from the given raw value. This initializer always succeeds, even if the value passed as `rawValue` exceeds the static properties declared as part of the option set. This example creates an instance of `ShippingOptions` with a raw value beyond the highest element, with a bit mask that effectively contains all the declared static members. let extraOptions = ShippingOptions(rawValue: 255) print(extraOptions.isStrictSuperset(of: .all)) // Prints "true" - Parameter rawValue: The raw value of the option set to create. Each bit of `rawValue` potentially represents an element of the option set, though raw values may include bits that are not defined as distinct values of the `OptionSet` type.
getRawValue($self: vImage_Options): numberlet rawValue: vImage_FlagsThe corresponding value of the raw type. A new instance initialized with `rawValue` will be equivalent to this instance. For example: enum PaperSize: String { case A4, A5, Letter, Legal } let selectedSize = PaperSize.Letter print(selectedSize.rawValue) // Prints "Letter" print(selectedSize == PaperSize(rawValue: selectedSize.rawValue)!) // Prints "true"
get doNotTile(): vImage_Optionsstatic let doNotTile: vImage.OptionsPass to turn off internal tiling and disable internal multithreading. Use this if you want to do your own tiling, or to use the Min/Max filters in place.
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