+
−/*
+
− *  CGPointUtils.h
+
− *  PinchMe
+
− *
+
− *  Created by Jeff LaMarche on 8/2/08.
+
− *  Copyright 2008 __MyCompanyName__. All rights reserved.
+
− *
+
− */
+
−
+
−#import <CoreGraphics/CoreGraphics.h>
+
−
+
−#define degreesToRadian(x) (M_PI * x / 180.0)
+
−#define radiansToDegrees(x) (180.0 * x / M_PI)
+
−
+
−CGFloat distanceBetweenPoints (CGPoint first, CGPoint second);
+
−CGFloat angleBetweenPoints(CGPoint first, CGPoint second);
+
−CGFloat angleBetweenLines(CGPoint line1Start, CGPoint line1End, CGPoint line2Start, CGPoint lin2End);