cocoaTouch/otherSrc/CGPointUtils.c
changeset 3514 59dbd31e9953
parent 3513 f589230fa21b
child 3515 3e8635f43972
--- a/cocoaTouch/otherSrc/CGPointUtils.c	Thu Jun 17 19:57:51 2010 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,34 +0,0 @@
-/*
- *  CGPointUtils.c
- *  PinchMe
- *
- *  Created by Jeff LaMarche on 8/2/08.
- *  Copyright 2008 __MyCompanyName__. All rights reserved.
- *
- */
-
-#include "CGPointUtils.h"
-#include <math.h>
-
-
-CGFloat distanceBetweenPoints (CGPoint first, CGPoint second) {
-	CGFloat deltaX = second.x - first.x;
-	CGFloat deltaY = second.y - first.y;
-	return sqrt(deltaX*deltaX + deltaY*deltaY );
-}
-
-CGFloat angleBetweenPoints(CGPoint first, CGPoint second) {
-	CGFloat height = second.y - first.y;
-	CGFloat width = first.x - second.x;
-	CGFloat rads = atan(height/width);
-	return radiansToDegrees(rads);
-}
-
-CGFloat angleBetweenLines(CGPoint line1Start, CGPoint line1End, CGPoint line2Start, CGPoint line2End) {
-	CGFloat a = line1End.x - line1Start.x;
-	CGFloat b = line1End.y - line1Start.y;
-	CGFloat c = line2End.x - line2Start.x;
-	CGFloat d = line2End.y - line2Start.y;
-	CGFloat rads = acos(((a*c) + (b*d)) / ((sqrt(a*a + b*b)) * (sqrt(c*c + d*d))));
-	return radiansToDegrees(rads);
-}