1 /*

     2  *  CGPointUtils.h

     3  *  PinchMe

     4  *

     5  *  Created by Jeff LaMarche on 8/2/08.

     6  *  Copyright 2008 __MyCompanyName__. All rights reserved.

     7  *

     8  */

     9 

    10 #import <CoreGraphics/CoreGraphics.h>

    11 

    12 #define degreesToRadian(x) (M_PI * x / 180.0)

    13 #define radiansToDegrees(x) (180.0 * x / M_PI)

    14 

    15 CGFloat distanceBetweenPoints (CGPoint first, CGPoint second);

    16 CGFloat angleBetweenPoints(CGPoint first, CGPoint second);

    17 CGFloat angleBetweenLines(CGPoint line1Start, CGPoint line1End, CGPoint line2Start, CGPoint lin2End);