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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU 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.
*/
#include "config.h"
#include <string.h>
#include <glib-object.h>
#include "vectors-types.h"
#include "base/temp-buf.h"
#include "core/gimpimage.h"
#include "gimpstroke.h"
#include "gimpvectors.h"
#include "gimpvectors-preview.h"
/* public functions */
TempBuf *
gimp_vectors_get_new_preview (GimpViewable *viewable,
gint width,
gint height)
{
GimpVectors *vectors;
GimpItem *item;
GimpStroke *cur_stroke;
gdouble xscale, yscale;
guchar *data;
TempBuf *temp_buf;
guchar white[1] = { 255 };
vectors = GIMP_VECTORS (viewable);
item = GIMP_ITEM (viewable);
xscale = ((gdouble) width) / gimp_image_get_width (item->gimage);
yscale = ((gdouble) height) / gimp_image_get_height (item->gimage);
temp_buf = temp_buf_new (width, height, 1, 0, 0, white);
data = temp_buf_data (temp_buf);
for (cur_stroke = gimp_vectors_stroke_get_next (vectors, NULL);
cur_stroke;
cur_stroke = gimp_vectors_stroke_get_next (vectors, cur_stroke))
{
GArray *coords;
gboolean closed;
gint i;
coords = gimp_stroke_interpolate (cur_stroke, 0.5, &closed);
if (coords)
{
for (i = 0; i < coords->len; i++)
{
GimpCoords point;
gint x, y;
point = g_array_index (coords, GimpCoords, i);
x = ROUND (point.x * xscale);
y = ROUND (point.y * yscale);
if (x >= 0 && y >= 0 && x < width && y < height)
data[y * width + x] = 0;
}
g_array_free (coords, TRUE);
}
}
return temp_buf;
}
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