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/* Interface for NSGeometry routines for GNUStep
Copyright (C) 1994 NeXT Computer, Inc.
This file is part of the GNU Objective C Class Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __NSGeometry_h_OBJECTS_INCLUDE
#define __NSGeometry_h_OBJECTS_INCLUDE
#include <objc/objc.h>
/* Geometry */
typedef struct _NSPoint { /* Point definition. */
float x;
float y;
} NSPoint;
typedef struct _NSSize { /* Rectangle sizes. */
float width;
float height;
} NSSize;
typedef struct _NSRect { /* Rectangle. */
NSPoint origin;
NSSize size;
} NSRect;
typedef enum {
NSMinXEdge,
NSMinYEdge,
NSMaxXEdge,
NSMaxYEdge
} NSRectEdge;
/* Create Basic Structures */
extern NSPoint NSMakePoint(float x, float y);
extern NSSize NSMakeSize(float w, float h);
extern NSRect NSMakeRect(float x, float y, float w, float h);
/* Get rectangle coordinates */
extern float NSMaxX(NSRect aRect);
extern float NSMaxY(NSRect aRect);
extern float NSMidX(NSRect aRect);
extern float NSMidY(NSRect aRect);
extern float NSMinX(NSRect aRect);
extern float NSMinY(NSRect aRect);
extern float NSWidth(NSRect aRect);
extern float NSHeight(NSRect aRect);
/* Modify a copy of a rectangle */
extern NSRect NSOffsetRect(NSRect aRect, float dx, float dy);
extern NSRect NSInsetRect(NSRect aRect, float dX, float dY);
extern NSRect NSIntegralRect(NSRect aRect);
extern void NSDivideRect(NSRect aRect, NSRect *slice, NSRect *remainder,
float amount, NSRectEdge edge);
/* Compute a third rectangle from two rectangles */
extern NSRect NSUnionRect(NSRect aRect, NSRect bRect);
extern NSRect NSIntersectionRect (NSRect aRect, NSRect bRect);
/* Test geometrical relationships */
extern BOOL NSEqualRects(NSRect aRect, NSRect bRect);
extern BOOL NSEqualSizes(NSSize aSize, NSSize bSize);
extern BOOL NSEqualPoints(NSPoint aPoint, NSPoint bPoint);
extern BOOL NSIsEmptyRect(NSRect aRect);
extern BOOL NSMouseInRect(NSPoint aPoint, NSRect aRect, BOOL flipped);
extern BOOL NSPointInRect(NSPoint aPoint, NSRect aRect);
extern BOOL NSContainsRect(NSRect aRect, NSRect bRect);
extern BOOL NSIntersectsRect (NSRect aRect, NSRect bRect);
#endif /* __NSGeometry_h_OBJECTS_INCLUDE */
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