swift – Sustaining Vertical Offset from Touchpoint after View Rotation in iOS


I am presently engaged on an iOS undertaking the place I am dealing with a problem associated to sustaining a vertical offset from a touchpoint even after the view has been rotated.

let level = CGPoint(x: touchpoint.x, y: touchpoint.y - CGFloat(self.setOffset))

Nevertheless, the present outcome I am getting would not match my expectations. This is a picture illustrating the problem: (https://i.stack.imgur.com/RyI0a.jpg)

I’ve additionally added an inverted rotation to a inexperienced form utilizing CAShapeLayer. Whereas I’ve managed to use the rotation to the form, I am struggling to determine easy methods to alter the touchpoint’s place to keep up the specified offset even after rotation.

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