getting camera horizontal view angle in Swift

Question

I want to get the HVA and VVA (Horizontal View Angle and Vertical View Angle) of the Camera of an iOS device. (using Swift) How do you do this?

In Android I can use the following functions for this:

public double getHVA() {
   return camera.getParameters().getHorizontalViewAngle();
}
public double getVVA() {
   return camera.getParameters().getVerticalViewAngle();
}

Is there something similar for Swift?

James Mart · Accepted Answer · 2015-04-13 03:38:06Z

3

It amazes me that there's no good solution to this. I have been able to successfully get the HVA programmatically, but it seems there is currently no way to get the VVA (If anyone knows otherwise, please correct me).

Here is how I did it:

    let devices = AVCaptureDevice.devices()
    var captureDevice : AVCaptureDevice?
    for device in devices {
        if (device.hasMediaType(AVMediaTypeVideo)) {
            if(device.position == AVCaptureDevicePosition.Back) {
                captureDevice = device as? AVCaptureDevice
            }
        }
    }
    if let retrievedDevice = captureDevice {
        println("HFOV is \(retrievedDevice.activeFormat.videoFieldOfView)")
    }

For more reading about AVCaptureDevices, and to view my code source, click here

answered Apr 13, 2015 at 3:38

James Mart

6605 silver badges17 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

James Mart Over a year ago

By the way you can also calculate the VVA if you know the aspect ratio of the device. For 16:9 AR: VVA = (HVA/16)*9

Collectives™ on Stack Overflow

getting camera horizontal view angle in Swift

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related