| /* in-place insert |
| * |
| * Copyright: J. Cupitt |
| * Written: 15/06/1992 |
| * 22/7/93 JC |
| * - im_incheck() added |
| * 16/8/94 JC |
| * - im_incheck() changed to im_makerw() |
| * 1/9/04 JC |
| * - checks bands/types/etc match (thanks Matt) |
| * - smarter pixel size calculations |
| * 5/12/06 |
| * - im_invalidate() after paint |
| * 24/3/09 |
| * - added IM_CODING_RAD support |
| * 21/10/09 |
| * - allow sub to be outside main |
| * - gtkdoc |
| * 6/3/10 |
| * - don't im_invalidate() after paint, this now needs to be at a higher |
| * level |
| */ |
| |
| /* |
| |
| 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| |
| */ |
| |
| /* |
| |
| These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk |
| |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif /*HAVE_CONFIG_H*/ |
| #include <vips/intl.h> |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include <vips/vips.h> |
| |
| #ifdef WITH_DMALLOC |
| #include <dmalloc.h> |
| #endif /*WITH_DMALLOC*/ |
| |
| /** |
| * im_insertplace: |
| * @main: main image |
| * @sub: sub-image to insert |
| * @x: position to insert |
| * @y: position to insert |
| * |
| * Copy @sub into @main at position @x, @y. The two images must match in |
| * format, bands and coding. |
| * |
| * This an inplace operation, so @main is changed. It does not thread and will |
| * not work well as part of a pipeline. |
| * |
| * See also: im_insert(). |
| * |
| * Returns: 0 on success, or -1 on error. |
| */ |
| int |
| im_insertplace( IMAGE *main, IMAGE *sub, int x, int y ) |
| { |
| Rect br, sr, clip; |
| PEL *p, *q; |
| int z; |
| |
| /* Check compatibility. |
| */ |
| if( im_rwcheck( main ) || |
| im_incheck( sub ) || |
| im_check_coding_known( "im_insertplace", main ) || |
| im_check_coding_known( "im_insertplace", sub ) || |
| im_check_format_same( "im_insertplace", main, sub ) || |
| im_check_bands_same( "im_insertplace", main, sub ) ) |
| return( -1 ); |
| |
| /* Make rects for main and sub and clip. |
| */ |
| br.left = 0; |
| br.top = 0; |
| br.width = main->Xsize; |
| br.height = main->Ysize; |
| sr.left = x; |
| sr.top = y; |
| sr.width = sub->Xsize; |
| sr.height = sub->Ysize; |
| im_rect_intersectrect( &br, &sr, &clip ); |
| if( im_rect_isempty( &clip ) ) |
| return( 0 ); |
| |
| /* Loop, memcpying sub to main. |
| */ |
| p = (PEL *) IM_IMAGE_ADDR( sub, clip.left - x, clip.top - y ); |
| q = (PEL *) IM_IMAGE_ADDR( main, clip.left, clip.top ); |
| for( z = 0; z < clip.height; z++ ) { |
| memcpy( (char *) q, (char *) p, |
| clip.width * IM_IMAGE_SIZEOF_PEL( sub ) ); |
| p += IM_IMAGE_SIZEOF_LINE( sub ); |
| q += IM_IMAGE_SIZEOF_LINE( main ); |
| } |
| |
| return( 0 ); |
| } |