How do I use the metadataOutputRectOfInterestForRect method and rectOfInterest property to scan a specific area? (QR Code)

Question

I am building a QR code scanner with Swift and everything works in that regard. The issue I have is that I am trying to make only a small area of the entire visible A

Answer 1

/// After

captureSession.startRunning()

/// Add this

if let videoPreviewLayer = self.videoPreviewLayer {
self.captureMetadataOutput.rectOfInterest =
videoPreviewLayer.metadataOutputRectOfInterest(for:
self.getRectOfInterest())


fileprivate func getRectOfInterest() -> CGRect {
        let centerX = (self.frame.width / 2) - 100
        let centerY = (self.frame.height / 2) - 100
        let quadr: CGFloat = 200

        let myRect = CGRect(x: centerX, y: centerY, width: quadr, height: quadr)

        return myRect
    }