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58 lines
1.5 KiB
Objective-C
58 lines
1.5 KiB
Objective-C
/*
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NSGeometryAdditions.h
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Additional functions for manipulating geometric structures.
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Copyright (C) 2005 Saso Kiselkov
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#import <Foundation/NSGeometry.h>
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/**
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* Adjusts `r' so that it's size and height are positive, shifting
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* around it's origin as necessary.
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*/
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static inline NSRect
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PositiveRect(NSRect r)
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{
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if (r.size.width < 0)
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{
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r.size.width = -r.size.width;
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r.origin.x -= r.size.width;
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}
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if (r.size.height < 0)
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{
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r.size.height = -r.size.height;
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r.origin.y -= r.size.height;
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}
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return r;
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}
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/**
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* Increments `r' to be `increment' larger in each direction.
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*/
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static inline NSRect
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IncrementedRect(NSRect r, float increment)
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{
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r.origin.x -= increment;
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r.origin.y -= increment;
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r.size.width += 2*increment;
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r.size.height += 2*increment;
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return r;
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}
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