/depot/cocosdocs/cocos2d-iphone-0.99.5/cocos2d/Support/CGPointExtension.h File Reference

#import <Availability.h>
#import <CoreGraphics/CGGeometry.h>
#import <math.h>
#import <objc/objc.h>

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Defines
#define	ccp(__X__, __Y__)   CGPointMake(__X__,__Y__)
Functions
static CGPoint	ccpAdd (const CGPoint v1, const CGPoint v2)
float	ccpAngle (CGPoint a, CGPoint b)
float	ccpAngleSigned (CGPoint a, CGPoint b)
CGPoint	ccpClamp (CGPoint p, CGPoint from, CGPoint to)
CGPoint	ccpCompMult (CGPoint a, CGPoint b)
CGPoint	ccpCompOp (CGPoint p, float(*opFunc)(float))
static CGFloat	ccpCross (const CGPoint v1, const CGPoint v2)
CGFloat	ccpDistance (const CGPoint v1, const CGPoint v2)
static CGFloat	ccpDot (const CGPoint v1, const CGPoint v2)
CGPoint	ccpForAngle (const CGFloat a)
CGPoint	ccpFromSize (CGSize s)
BOOL	ccpFuzzyEqual (CGPoint a, CGPoint b, float variance)
CGFloat	ccpLength (const CGPoint v)
static CGFloat	ccpLengthSQ (const CGPoint v)
CGPoint	ccpLerp (CGPoint a, CGPoint b, float alpha)
BOOL	ccpLineIntersect (CGPoint p1, CGPoint p2, CGPoint p3, CGPoint p4, float *s, float *t)
static CGPoint	ccpMidpoint (const CGPoint v1, const CGPoint v2)
static CGPoint	ccpMult (const CGPoint v, const CGFloat s)
static CGPoint	ccpNeg (const CGPoint v)
CGPoint	ccpNormalize (const CGPoint v)
static CGPoint	ccpPerp (const CGPoint v)
static CGPoint	ccpProject (const CGPoint v1, const CGPoint v2)
static CGPoint	ccpRotate (const CGPoint v1, const CGPoint v2)
CGPoint	ccpRotateByAngle (CGPoint v, CGPoint pivot, float angle)
static CGPoint	ccpRPerp (const CGPoint v)
static CGPoint	ccpSub (const CGPoint v1, const CGPoint v2)
CGFloat	ccpToAngle (const CGPoint v)
static CGPoint	ccpUnrotate (const CGPoint v1, const CGPoint v2)
float	clampf (float value, float min_inclusive, float max_inclusive)

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Detailed Description

CGPoint extensions based on Chipmunk's cpVect file. These extensions work both with CGPoint and cpVect.

The "ccp" prefix means: "CoCos2d Point"

Examples:

• ccpAdd( ccp(1,1), ccp(2,2) ); // preferred cocos2d way
• ccpAdd( CGPointMake(1,1), CGPointMake(2,2) ); // also ok but more verbose

• cpvadd( cpv(1,1), cpv(2,2) ); // way of the chipmunk
• ccpAdd( cpv(1,1), cpv(2,2) ); // mixing chipmunk and cocos2d (avoid)
• cpvadd( CGPointMake(1,1), CGPointMake(2,2) ); // mixing chipmunk and CG (avoid)