How to calculate image rotation?

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Anton Shamanov2016-07-20 08:39:48

Geometry

Anton Shamanov, 2016-07-20 08:39:48

How to calculate image rotation?

Task: rotate the image by N degrees and crop the resulting image so that there is no background left. Some formula is needed to determine how many pixels to crop the resulting image.

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Peter, 2016-07-20
@petermzg

You had a side of length D, you turned it by an angle N.
You got a right triangle.
And accordingly, you only need "Trigonometric functions of an acute angle"

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