Geometry

Geometry.h

@import UIKit;

CGFloat degreesToRadians(CGFloat degrees);

CGFloat distanceBetweenDegrees(CGFloat min, CGFloat max);

CGPoint pointOnArc(CGPoint center, CGFloat radius, CGFloat angleInDegrees);

Geometry.m

#import "Geometry.h"

CGFloat degreesToRadians(CGFloat degrees) {
    return degrees * M_PI / 180.0;
}

CGFloat distanceBetweenDegrees(CGFloat min, CGFloat max) {
    int degrees = abs((int)min - (int)max) % 360;
    return degrees;
}

CGPoint pointOnArc(CGPoint center, CGFloat radius, CGFloat angleInDegrees) {
    CGFloat radians = degreesToRadians(angleInDegrees);
    CGFloat x = radius * cos(radians) + center.x;
    CGFloat y = radius * sin(radians) + center.y;
    return CGPointMake(x, y);
}