81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/* Simple rectangle algebra.
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser 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 Street, Fifth Floor, Boston, MA
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02110-1301 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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#ifndef VIPS_RECT_H
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#define VIPS_RECT_H
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#include <glib.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /*__cplusplus*/
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typedef struct _VipsRect {
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/*< public >*/
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int left;
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int top;
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int width;
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int height;
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} VipsRect;
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#define VIPS_RECT_RIGHT(R) ((R)->left + (R)->width)
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#define VIPS_RECT_BOTTOM(R) ((R)->top + (R)->height)
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#define VIPS_RECT_HCENTRE(R) ((R)->left + (R)->width / 2)
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#define VIPS_RECT_VCENTRE(R) ((R)->top + (R)->height / 2)
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VIPS_API
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gboolean vips_rect_isempty( const VipsRect *r );
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VIPS_API
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gboolean vips_rect_includespoint( const VipsRect *r, int x, int y );
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VIPS_API
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gboolean vips_rect_includesrect( const VipsRect *r1, const VipsRect *r2 );
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VIPS_API
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gboolean vips_rect_equalsrect( const VipsRect *r1, const VipsRect *r2 );
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VIPS_API
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gboolean vips_rect_overlapsrect( const VipsRect *r1, const VipsRect *r2 );
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VIPS_API
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void vips_rect_marginadjust( VipsRect *r, int n );
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VIPS_API
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void vips_rect_intersectrect( const VipsRect *r1, const VipsRect *r2,
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VipsRect *out );
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VIPS_API
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void vips_rect_unionrect( const VipsRect *r1, const VipsRect *r2,
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VipsRect *out );
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VIPS_API
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VipsRect *vips_rect_dup( const VipsRect *r );
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VIPS_API
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void vips_rect_normalise( VipsRect *r );
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#ifdef __cplusplus
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}
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#endif /*__cplusplus*/
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#endif /*VIPS_RECT_H*/
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