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/* GIMP - The GNU 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <glib-object.h>
#include <cairo.h>
#include "core-types.h"
#include "base/boundary.h"
#include "base/pixel-region.h"
#include "base/temp-buf.h"
#include "gimpbezierdesc.h"
#include "gimpbrush.h"
#include "gimpbrush-boundary.h"
static GimpBezierDesc *
gimp_brush_transform_boundary_exact (GimpBrush *brush,
gdouble scale,
gdouble aspect_ratio,
gdouble angle,
gdouble hardness)
{
const TempBuf *mask;
mask = gimp_brush_transform_mask (brush,
scale, aspect_ratio, angle, hardness);
if (mask)
{
PixelRegion maskPR;
BoundSeg *bound_segs;
gint n_bound_segs;
pixel_region_init_temp_buf (&maskPR, (TempBuf *) mask,
0, 0, mask->width, mask->height);
bound_segs = boundary_find (&maskPR, BOUNDARY_WITHIN_BOUNDS,
0, 0, maskPR.w, maskPR.h,
0,
&n_bound_segs);
if (bound_segs)
{
BoundSeg *stroke_segs;
gint n_stroke_groups;
stroke_segs = boundary_sort (bound_segs, n_bound_segs,
&n_stroke_groups);
g_free (bound_segs);
if (stroke_segs)
{
GimpBezierDesc *path;
path = gimp_bezier_desc_new_from_bound_segs (stroke_segs,
n_bound_segs,
n_stroke_groups);
g_free (stroke_segs);
return path;
}
}
}
return NULL;
}
static GimpBezierDesc *
gimp_brush_transform_boundary_approx (GimpBrush *brush,
gdouble scale,
gdouble aspect_ratio,
gdouble angle,
gdouble hardness)
{
return gimp_brush_transform_boundary_exact (brush,
scale, aspect_ratio,
angle, hardness);
}
GimpBezierDesc *
gimp_brush_real_transform_boundary (GimpBrush *brush,
gdouble scale,
gdouble aspect_ratio,
gdouble angle,
gdouble hardness,
gint *width,
gint *height)
{
gimp_brush_transform_size (brush, scale, aspect_ratio, angle,
width, height);
if (*width < 256 && *height < 256)
{
return gimp_brush_transform_boundary_exact (brush,
scale, aspect_ratio,
angle, hardness);
}
return gimp_brush_transform_boundary_approx (brush,
scale, aspect_ratio,
angle, hardness);
}
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