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/* drawink with a constant ink
*
* 27/9/10
* - from im_drawink_circle()
* 17/11/10
* - oops, scanline clipping was off by 1
*/
/*
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
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <glib/gi18n-lib.h>
#include <string.h>
#include <vips/vips.h>
#include <vips/internal.h>
#include "drawink.h"
G_DEFINE_ABSTRACT_TYPE( VipsDrawink, vips_drawink, VIPS_TYPE_DRAW );
static int
vips_drawink_build( VipsObject *object )
{
VipsObjectClass *class = VIPS_OBJECT_GET_CLASS( object );
VipsDraw *draw = VIPS_DRAW( object );
VipsDrawink *drawink = VIPS_DRAWINK( object );
#ifdef DEBUG
printf( "vips_drawink_build: " );
vips_object_print_name( object );
printf( "\n" );
#endif /*DEBUG*/
if( VIPS_OBJECT_CLASS( vips_drawink_parent_class )->build( object ) )
return( -1 );
if( drawink->ink &&
!(drawink->pixel_ink = vips__vector_to_ink( class->nickname,
draw->image,
VIPS_ARRAY_ADDR( drawink->ink, 0 ), NULL,
VIPS_AREA( drawink->ink )->n )) )
return( -1 );
return( 0 );
}
static void
vips_drawink_class_init( VipsDrawinkClass *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 = "drawink";
vobject_class->description = _( "draw with ink operations" );
vobject_class->build = vips_drawink_build;
VIPS_ARG_BOXED( class, "ink", 2,
_( "Ink" ),
_( "Color for pixels" ),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsDrawink, ink ),
VIPS_TYPE_ARRAY_DOUBLE );
}
static void
vips_drawink_init( VipsDrawink *drawink )
{
drawink->ink = vips_array_double_newv( 1, 0.0 );
}
/* Fill a scanline between points x1 and x2 inclusive. x1 < x2.
*/
int
vips__drawink_scanline( VipsDrawink *drawink, int y, int x1, int x2 )
{
VipsDraw *draw = (VipsDraw *) drawink;
VipsPel *mp;
int i;
int len;
g_assert( x1 <= x2 );
if( y < 0 ||
y >= draw->image->Ysize )
return( 0 );
if( x1 < 0 &&
x2 < 0 )
return( 0 );
if( x1 >= draw->image->Xsize &&
x2 >= draw->image->Xsize )
return( 0 );
x1 = VIPS_CLIP( 0, x1, draw->image->Xsize - 1 );
x2 = VIPS_CLIP( 0, x2, draw->image->Xsize - 1 );
mp = VIPS_IMAGE_ADDR( draw->image, x1, y );
len = x2 - x1 + 1;
for( i = 0; i < len; i++ ) {
vips__drawink_pel( drawink, mp );
mp += draw->psize;
}
return( 0 );
}
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