CBHGeometryKit provides a consistent interface for dealing with Foundation geometry types and expands on existing functions to make a number of other operations easier.
Specifically it provides functions for:
NSPointNSSizeNSRectNSRange
#pragma mark - Creating Points
NSPoint NSPoint_init(CGFloat x, CGFloat y);
NSPoint NSPoint_initWithString(NSString *string);
NSPoint NSPoint_initZero(void);
#pragma mark - Checking Points
BOOL NSPoint_isEqual(NSPoint point, NSPoint other);
#pragma mark - Derived Points
NSPoint NSPoint_truncate(NSPoint point);
NSPoint NSPoint_round(NSPoint point);
NSPoint NSPoint_shift(NSPoint point, NSPoint delta);
NSPoint NSPoint_shiftParametric(NSPoint point, CGFloat dX, CGFloat dY);
NSPoint NSPoint_nearestPixel(NSPoint point);
#pragma mark - Distance
CGFloat NSPoint_distance(NSPoint start, NSPoint end);
CGFloat NSPoint_distanceSquared(NSPoint start, NSPoint end);
#pragma mark - Description
NSString *NSPoint_description(NSPoint point);#pragma mark - Creating Sizes
NSSize NSSize_init(CGFloat width, CGFloat height);
NSSize NSSize_initWithString(NSString *string);
NSSize NSSize_initEmpty(void);
#pragma mark - Checking Sizes
BOOL NSSize_isEmpty(NSSize size);
BOOL NSSize_isNegative(NSSize size);
BOOL NSSize_isEqual(NSSize size, NSSize other);
#pragma mark - Derived Sizes
NSSize NSSize_truncate(NSSize size);
NSSize NSSize_round(NSSize size);
NSSize NSSize_absolute(NSSize size);
NSSize NSSize_scale(NSSize size, NSSize delta);
NSSize NSSize_scaleParametric(NSSize size, CGFloat dWidth, CGFloat dHeight);
#pragma mark - Description
NSString *NSSize_description(NSSize size);#pragma mark - Creating Rects
NSRect NSRect_init(CGFloat x, CGFloat y, CGFloat width, CGFloat height);
NSRect NSRect_initWithStructs(NSPoint origin, NSSize size);
NSRect NSRect_initWithSize(NSSize size);
NSRect NSRect_initWithString(NSString *string);
NSRect NSRect_initEmpty(void);
#pragma mark - Checking Rects
BOOL NSRect_isEmpty(NSRect rect);
BOOL NSRect_isNegative(NSRect rect);
BOOL NSRect_isEqual(NSRect rect, NSRect other);
BOOL NSRect_isCovering(NSRect rect, NSRect other);
BOOL NSRect_isIntersecting(NSRect rect, NSRect other);
BOOL NSRect_isPointInRect(NSRect rect, NSPoint point);
BOOL NSRect_isMouseInRect(NSRect rect, NSPoint point, BOOL flipped);
#pragma mark - Derived Rects
NSRect NSRect_inset(NSRect rect, CGFloat dX, CGFloat dY);
NSRect NSRect_offset(NSRect rect, CGFloat dX, CGFloat dY);
NSRect NSRect_integral(NSRect rect);
NSRect NSRect_truncate(NSRect rect);
NSRect NSRect_round(NSRect rect);
NSRect NSRect_absolute(NSRect rect);
NSRect NSRect_alignWithPixels(NSRect rect);
NSRect NSRect_intersection(NSRect rect, NSRect other);
NSRect NSRect_union(NSRect rect, NSRect other);
NSRect NSRect_centeredInRect(NSRect rect, NSRect inRect);
#pragma mark - Derived Points
NSPoint NSRect_minPoint(NSRect rect);
NSPoint NSRect_midPoint(NSRect rect);
NSPoint NSRect_maxPoint(NSRect rect);
#pragma mark - Calculated Properties
CGFloat NSRect_maxX(NSRect rect);
CGFloat NSRect_maxY(NSRect rect);
CGFloat NSRect_midX(NSRect rect);
CGFloat NSRect_midY(NSRect rect);
CGFloat NSRect_minX(NSRect rect);
CGFloat NSRect_minY(NSRect rect);
#pragma mark - Description
NSString *NSRect_description(NSRect rect);#pragma mark - Creating Ranges
NSRange NSRange_init(NSUInteger location, NSUInteger length);
NSRange NSRange_initFromTo(NSUInteger from, NSUInteger to);
NSRange NSRange_initWithString(NSString *string);
NSRange NSRange_initEmpty();
#pragma mark - Checking Range
BOOL NSRange_isEmpty(NSRange range);
BOOL NSRange_isEqual(NSRange range, NSRange other);
BOOL NSRange_isLocationInRange(NSRange range, NSUInteger location);
#pragma mark - Derived Ranges
NSRange NSRange_intersection(NSRange range, NSRange other);
NSRange NSRange_union(NSRange range, NSRange other);
#pragma mark - Calculated Properties
NSUInteger NSRange_max(NSRange range);
NSUInteger NSRange_locationAtOffset(NSRange range, NSUInteger offset);
#pragma mark - Description
NSString *NSRange_description(NSRange range);CBHGeometryKit is available under the ISC license.