i have the following code, i am trying to ready the image i have in order to define where is the white pixels, transparent and so on, but my output always is 255 ( if (pointer.pointee >> 24) == 255) so it is telling me that it is all black, while it's not! any help?
var colorSpace = CGColorSpaceCreateDeviceRGB()
let imageCG = image.cgImage!
imageWidth = imageCG.width
imageHeight = imageCG.height
imageScale = image.scale
totalPixels = imageHeight * imageWidth
var bitsPerComponent = 8
var bytesPerRow = 4 * imageWidth
var bitmapInfo = CGBitmapInfo.byteOrder32Little.rawValue | CGImageAlphaInfo.premultipliedFirst.rawValue
// Init imageContext
imageContext = CGContext(data: nil, width: imageWidth, height: imageHeight, bitsPerComponent: bitsPerComponen`enter code here`t, bytesPerRow: bytesPerRow, space: colorSpace, bitmapInfo: bitmapInfo)!
imageContext.draw(imageCG, in: CGRect(x: 0, y: 0, width: imageWidth, height: imageHeight))
// Init imageData
imageData = imageContext.data!.bindMemory(to: UInt32.self, capacity: totalPixels)
// Init regionsData
regionsData = UnsafeMutablePointer<UInt16>.allocate(capacity: totalPixels)
var regionsPointer: UnsafeMutablePointer<UInt16> = regionsData
var pointer: UnsafeMutablePointer<UInt32> = imageData
// Scan image data and mark full transparent, semitransparent and opaque pixels in regions data
let minAlpha = UInt32(255 - transparencyTolerance)
for _ in 0..<totalPixels {
if (pointer.pointee >> 24) == 255 {
regionsPointer.pointee = regionsBlackColor
} else if (pointer.pointee >> 24) > minAlpha {
regionsPointer.pointee = regionsTransparentColor
} else {
regionsPointer.pointee = regionsWhiteColor
}
pointer.pointee = whiteColor
pointer = pointer.successor()
regionsPointer = regionsPointer.successor()
}