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Question by EvengerX · Jul 27, 2012 at 06:53 PM · zoomframetrigonometryfield of view

Trig function problem

Essentially i'm trying to get the distance of a gameObject from a camera to change so that it stays the same size (visually) in the camera's view as it's field of view raises and lowers.

I set up a trig function that should do this, but for some reason it doesn't;


distance = halfObjectHeight / Mathf.Tan(halfCameraViewAngle)


Is there something that I am doing wrong?

Also: The camera MUST zoom using field of view, I can't change that.

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Answer by ScroodgeM · Aug 05, 2012 at 06:52 PM

 distance = halfObjectHeight / Mathf.Tan(halfCameraViewAngle * Mathf.Deg2Rad);

Mathf.Tan function needs radians on input, FOV of camera uses degrees.

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