im_*join() gtkdoc
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John Cupitt
parent
d0e2867674
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@ -31,6 +31,7 @@
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- im_check*() name rationalisation
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- finally removed old flood stuff
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- im_insert*() bandalike and formatalike
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- im_*join() bandalike and formatalike
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26/11/09 started 7.20.3
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- updated en_GB.po translation
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@ -1,12 +1,4 @@
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/* @(#) To join two images left right. The resultant image has
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* @(#) Xsize = im1.Xsize + im2.Xsize and Ysize the min of im1.Ysize, im2.Ysize
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* @(#) Input images should have the same number of Bands and BandFmt
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* @(#)
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* @(#) Usage:
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* @(#) int im_lrjoin( IMAGE *left, IMAGE *right, IMAGE *out)
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* @(#) IMAGE *left, *right, *out;
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* @(#)
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* @(#)
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/* im_lrjoin
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*
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* Copyright 1990, 1991: Kirk Martinez, N. Dessipris
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* Author: Kirk Martinez, N. Dessipris
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@ -24,6 +16,9 @@
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* - rewritten in terms of im_insert()
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* 14/4/04
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* - sets Xoffset / Yoffset
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* 1/2/10
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* - gtkdoc
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* - cleanups
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*/
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/*
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@ -66,20 +61,40 @@
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#include <dmalloc.h>
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#endif /*WITH_DMALLOC*/
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/**
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* im_lrjoin:
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* @left: image to go on left
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* @right: image to go on right
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* @out: output image
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*
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* Join @left and @right together, left-right. If one is taller than the
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* other, @out will be has high as the smaller.
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*
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* If the number of bands differs, one of the images
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* must have one band. In this case, an n-band image is formed from the
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* one-band image by joining n copies of the one-band image together, and then
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* the two n-band images are operated upon.
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*
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* The two input images are cast up to the smallest common type (see table
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* Smallest common format in
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* <link linkend="VIPS-arithmetic">arithmetic</link>).
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*
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* See also: im_insert(), im_tbjoin().
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*
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* Returns: 0 on success, -1 on error
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*/
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int
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im_lrjoin( IMAGE *left, IMAGE *right, IMAGE *out )
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{
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IMAGE *t1 = im_open_local( out, "im_lrjoin:1", "p" );
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IMAGE *t1;
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/* Paste right and left together.
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/* Paste right and left together, trim the bottom edge.
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*/
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if( !t1 || im_insert( left, right, t1, left->Xsize, 0 ) )
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return( -1 );
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/* Extract the part which the old im_lrjoin() would have made.
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*/
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if( im_extract_area( t1, out,
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0, 0, t1->Xsize, IM_MIN( left->Ysize, right->Ysize ) ) )
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if( !(t1 = im_open_local( out, "im_lrjoin:1", "p" )) ||
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im_insert( left, right, t1, left->Xsize, 0 ) ||
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im_extract_area( t1, out,
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0, 0, t1->Xsize, IM_MIN( left->Ysize, right->Ysize ) ) )
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return( -1 );
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out->Xoffset = left->Xsize;
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@ -1,12 +1,4 @@
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/* @(#) To join two images top bottom. The resultant image has
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* @(#) Ysize = im1.Ysize + im2.Ysize and Xsize the min of im1.Xsize, im2.Xsize
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* @(#) Input images should have the same number of Bands and BandFmt
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* @(#)
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* @(#) Usage:
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* @(#) int im_tbjoin(top, bottom, out)
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* @(#) IMAGE *top, *bottom, *out;
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* @(#)
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* @(#)
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/* im_tbjoin
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*
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* Copyright: 1990, 1991 Kirk Martinez, N. Dessipris
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* Author: Kirk Martinez, N. Dessipris
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@ -24,6 +16,9 @@
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* - rewritten in terms of im_insert()
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* 14/4/04
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* - sets Xoffset / Yoffset
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* 1/2/10
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* - gtkdoc
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* - cleanups
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*/
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/*
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@ -66,20 +61,39 @@
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#include <dmalloc.h>
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#endif /*WITH_DMALLOC*/
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/**
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* im_tbjoin:
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* @top: image to go on top
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* @bottom: image to go on bottom
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* @out: output image
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*
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* Join @top and @bottom together, up-down. If one is wider than the
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* other, @out will be has wide as the smaller.
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*
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* If the number of bands differs, one of the images
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* must have one band. In this case, an n-band image is formed from the
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* one-band image by joining n copies of the one-band image together, and then
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* the two n-band images are operated upon.
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*
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* The two input images are cast up to the smallest common type (see table
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* Smallest common format in
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* <link linkend="VIPS-arithmetic">arithmetic</link>).
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*
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* See also: im_insert(), im_tbjoin().
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*
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* Returns: 0 on success, -1 on error
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*/
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int
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im_tbjoin( IMAGE *top, IMAGE *bottom, IMAGE *out )
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{
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IMAGE *t1 = im_open_local( out, "im_tbjoin:1", "p" );
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IMAGE *t1;
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/* Paste top and bottom together.
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/* Paste top and bottom together, cut off any leftovers.
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*/
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if( !t1 || im_insert( top, bottom, t1, 0, top->Ysize ) )
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return( -1 );
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/* Extract the part which the old im_tbjoin() would have made.
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*/
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if( im_extract_area( t1, out,
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0, 0, IM_MIN( top->Xsize, bottom->Xsize ), t1->Ysize ) )
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if( !(t1 = im_open_local( out, "im_tbjoin:1", "p" )) ||
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im_insert( top, bottom, t1, 0, top->Ysize ) ||
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im_extract_area( t1, out,
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0, 0, IM_MIN( top->Xsize, bottom->Xsize ), t1->Ysize ) )
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return( -1 );
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out->Xoffset = 0;
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