forked from libvips/libvips
-
Notifications
You must be signed in to change notification settings - Fork 5
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
simple wrapper over vips_affine() that lets you give the matrix as scale + angle.
- Loading branch information
Showing
7 changed files
with
218 additions
and
26 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,201 @@ | ||
/* simple wrapper over vips_similarity() to make scale / rotate easy from the | ||
* command-line | ||
* | ||
* 3/10/13 | ||
* - from similarity.c | ||
*/ | ||
|
||
/* | ||
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 | ||
*/ | ||
|
||
/* | ||
#define DEBUG | ||
*/ | ||
|
||
#ifdef HAVE_CONFIG_H | ||
#include <config.h> | ||
#endif /*HAVE_CONFIG_H*/ | ||
#include <vips/intl.h> | ||
|
||
#include <math.h> | ||
|
||
#include <vips/vips.h> | ||
|
||
#include "presample.h" | ||
|
||
typedef struct _VipsSimilarity { | ||
VipsResample parent_instance; | ||
|
||
double scale; | ||
double angle; | ||
VipsInterpolate *interpolate; | ||
double odx; | ||
double ody; | ||
double idx; | ||
double idy; | ||
|
||
} VipsSimilarity; | ||
|
||
typedef VipsResampleClass VipsSimilarityClass; | ||
|
||
G_DEFINE_TYPE( VipsSimilarity, vips_similarity, VIPS_TYPE_RESAMPLE ); | ||
|
||
static int | ||
vips_similarity_build( VipsObject *object ) | ||
{ | ||
VipsResample *resample = VIPS_RESAMPLE( object ); | ||
VipsSimilarity *similarity = (VipsSimilarity *) object; | ||
|
||
VipsImage **t = (VipsImage **) | ||
vips_object_local_array( object, 4 ); | ||
|
||
double a, b, c, d; | ||
|
||
if( VIPS_OBJECT_CLASS( vips_similarity_parent_class )->build( object ) ) | ||
return( -1 ); | ||
|
||
a = similarity->scale * cos( VIPS_RAD( similarity->angle ) ); | ||
b = sin( VIPS_RAD( similarity->angle ) ); | ||
c = -b; | ||
d = a; | ||
|
||
if( vips_affine( resample->in, &t[0], a, b, c, d, | ||
"interpolate", similarity->interpolate, | ||
"odx", similarity->odx, | ||
"ody", similarity->ody, | ||
"idx", similarity->idx, | ||
"idy", similarity->idy, | ||
NULL ) || | ||
vips_image_write( t[0], resample->out ) ) | ||
return( -1 ); | ||
|
||
return( 0 ); | ||
} | ||
|
||
static void | ||
vips_similarity_class_init( VipsSimilarityClass *class ) | ||
{ | ||
GObjectClass *gobject_class = G_OBJECT_CLASS( class ); | ||
VipsObjectClass *vobject_class = VIPS_OBJECT_CLASS( class ); | ||
|
||
gobject_class->set_property = vips_object_set_property; | ||
gobject_class->get_property = vips_object_get_property; | ||
|
||
vobject_class->nickname = "similarity"; | ||
vobject_class->description = _( "similarity transform of an image" ); | ||
vobject_class->build = vips_similarity_build; | ||
|
||
VIPS_ARG_DOUBLE( class, "scale", 3, | ||
_( "Scale" ), | ||
_( "Scale by this factor" ), | ||
VIPS_ARGUMENT_OPTIONAL_INPUT, | ||
G_STRUCT_OFFSET( VipsSimilarity, scale ), | ||
0, 10000000, 1 ); | ||
|
||
VIPS_ARG_DOUBLE( class, "angle", 4, | ||
_( "Angle" ), | ||
_( "Rotate anticlockwise by this many degrees" ), | ||
VIPS_ARGUMENT_OPTIONAL_INPUT, | ||
G_STRUCT_OFFSET( VipsSimilarity, angle ), | ||
-10000000, 10000000, 0 ); | ||
|
||
VIPS_ARG_INTERPOLATE( class, "interpolate", 2, | ||
_( "Interpolate" ), | ||
_( "Interpolate pixels with this" ), | ||
VIPS_ARGUMENT_OPTIONAL_INPUT, | ||
G_STRUCT_OFFSET( VipsSimilarity, interpolate ) ); | ||
|
||
VIPS_ARG_DOUBLE( class, "odx", 112, | ||
_( "Output offset" ), | ||
_( "Horizontal output displacement" ), | ||
VIPS_ARGUMENT_OPTIONAL_INPUT, | ||
G_STRUCT_OFFSET( VipsSimilarity, odx ), | ||
-10000000, 10000000, 0 ); | ||
|
||
VIPS_ARG_DOUBLE( class, "ody", 113, | ||
_( "Output offset" ), | ||
_( "Vertical output displacement" ), | ||
VIPS_ARGUMENT_OPTIONAL_INPUT, | ||
G_STRUCT_OFFSET( VipsSimilarity, ody ), | ||
-10000000, 10000000, 0 ); | ||
|
||
VIPS_ARG_DOUBLE( class, "idx", 114, | ||
_( "Input offset" ), | ||
_( "Horizontal input displacement" ), | ||
VIPS_ARGUMENT_OPTIONAL_INPUT, | ||
G_STRUCT_OFFSET( VipsSimilarity, idx ), | ||
-10000000, 10000000, 0 ); | ||
|
||
VIPS_ARG_DOUBLE( class, "idy", 115, | ||
_( "Input offset" ), | ||
_( "Vertical input displacement" ), | ||
VIPS_ARGUMENT_OPTIONAL_INPUT, | ||
G_STRUCT_OFFSET( VipsSimilarity, idy ), | ||
-10000000, 10000000, 0 ); | ||
} | ||
|
||
static void | ||
vips_similarity_init( VipsSimilarity *similarity ) | ||
{ | ||
similarity->scale = 1; | ||
} | ||
|
||
/** | ||
* vips_similarity: | ||
* @in: input image | ||
* @out: output image | ||
* | ||
* Optional arguments: | ||
* | ||
* @scale: scale by this factor | ||
* @angle: rotate by this many degrees anticlockwise | ||
* @interpolate: interpolate pixels with this | ||
* @idx: input horizontal offset | ||
* @idy: input vertical offset | ||
* @odx: output horizontal offset | ||
* @ody: output vertical offset | ||
* | ||
* This operator calls vips_affine() for you, calculating the matrix for the | ||
* affine transform from @scale and @angle. Other parameters are passed on to | ||
* vips_affine() unaltered. | ||
* | ||
* See also: vips_affine(), #VipsInterpolate. | ||
* | ||
* Returns: 0 on success, -1 on error | ||
*/ | ||
int | ||
vips_similarity( VipsImage *in, VipsImage **out, ... ) | ||
{ | ||
va_list ap; | ||
int result; | ||
|
||
va_start( ap, out ); | ||
result = vips_call_split( "similarity", ap, in, out ); | ||
va_end( ap ); | ||
|
||
return( result ); | ||
} |