mirror of https://github.com/GNOME/gimp.git
131 lines
4.4 KiB
C
131 lines
4.4 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <cairo.h>
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#include <gegl.h>
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#include "core-types.h"
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#include "base/temp-buf.h"
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#include "gegl/gimp-gegl-utils.h"
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#include "gimpbezierdesc.h"
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#include "gimpboundary.h"
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#include "gimpbrush.h"
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#include "gimpbrush-boundary.h"
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static GimpBezierDesc *
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gimp_brush_transform_boundary_exact (GimpBrush *brush,
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gdouble scale,
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gdouble aspect_ratio,
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gdouble angle,
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gdouble hardness)
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{
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const TempBuf *mask;
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mask = gimp_brush_transform_mask (brush,
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scale, aspect_ratio, angle, hardness);
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if (mask)
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{
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GeglBuffer *buffer;
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GimpBoundSeg *bound_segs;
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gint n_bound_segs;
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buffer = gegl_buffer_linear_new_from_data (mask->data,
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babl_format ("Y u8"),
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GIMP_GEGL_RECT (0,0,mask->width,
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mask->height),
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GEGL_AUTO_ROWSTRIDE,
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NULL, NULL);
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bound_segs = gimp_boundary_find (buffer, NULL,
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GIMP_BOUNDARY_WITHIN_BOUNDS,
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0, 0, mask->width, mask->height,
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0,
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&n_bound_segs);
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g_object_unref (buffer);
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if (bound_segs)
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{
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GimpBoundSeg *stroke_segs;
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gint n_stroke_groups;
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stroke_segs = gimp_boundary_sort (bound_segs, n_bound_segs,
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&n_stroke_groups);
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g_free (bound_segs);
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if (stroke_segs)
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{
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GimpBezierDesc *path;
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path = gimp_bezier_desc_new_from_bound_segs (stroke_segs,
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n_bound_segs,
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n_stroke_groups);
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g_free (stroke_segs);
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return path;
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}
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}
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}
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return NULL;
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}
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static GimpBezierDesc *
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gimp_brush_transform_boundary_approx (GimpBrush *brush,
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gdouble scale,
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gdouble aspect_ratio,
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gdouble angle,
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gdouble hardness)
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{
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return gimp_brush_transform_boundary_exact (brush,
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scale, aspect_ratio,
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angle, hardness);
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}
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GimpBezierDesc *
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gimp_brush_real_transform_boundary (GimpBrush *brush,
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gdouble scale,
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gdouble aspect_ratio,
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gdouble angle,
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gdouble hardness,
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gint *width,
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gint *height)
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{
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gimp_brush_transform_size (brush, scale, aspect_ratio, angle,
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width, height);
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if (*width < 256 && *height < 256)
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{
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return gimp_brush_transform_boundary_exact (brush,
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scale, aspect_ratio,
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angle, hardness);
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}
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return gimp_brush_transform_boundary_approx (brush,
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scale, aspect_ratio,
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angle, hardness);
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}
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