/* Simple rectangle algebra. */ /* This file is part of VIPS. VIPS is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk */ #ifndef VIPS_RECT_H #define VIPS_RECT_H #ifdef __cplusplus extern "C" { #endif /*__cplusplus*/ typedef struct _VipsRect { /*< public >*/ int left; int top; int width; int height; } VipsRect; #define VIPS_RECT_RIGHT(R) ((R)->left + (R)->width) #define VIPS_RECT_BOTTOM(R) ((R)->top + (R)->height) #define VIPS_RECT_HCENTRE(R) ((R)->left + (R)->width / 2) #define VIPS_RECT_VCENTRE(R) ((R)->top + (R)->height / 2) gboolean vips_rect_isempty( const VipsRect *r ); gboolean vips_rect_includespoint( const VipsRect *r, int x, int y ); gboolean vips_rect_includesrect( const VipsRect *r1, const VipsRect *r2 ); gboolean vips_rect_equalsrect( const VipsRect *r1, const VipsRect *r2 ); void vips_rect_marginadjust( VipsRect *r, int n ); void vips_rect_intersectrect( const VipsRect *r1, const VipsRect *r2, VipsRect *out ); void vips_rect_unionrect( const VipsRect *r1, const VipsRect *r2, VipsRect *out ); VipsRect *vips_rect_dup( const VipsRect *r ); void vips_rect_normalise( VipsRect *r ); #ifdef __cplusplus } #endif /*__cplusplus*/ #endif /*VIPS_RECT_H*/