mirror of https://github.com/GNOME/gimp.git
117 lines
4.3 KiB
C
117 lines
4.3 KiB
C
/* The GIMP -- an 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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __BEZIER_SELECTP_H__
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#define __BEZIER_SELECTP_H__
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#include "draw_core.h"
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#define BEZIER_START 1
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#define BEZIER_ADD 2
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#define BEZIER_EDIT 4
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#define BEZIER_DRAG 8
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#define BEZIER_ANCHOR 1
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#define BEZIER_CONTROL 2
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#define BEZIER_MOVE 3
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#define IMAGE_COORDS 1
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#define AA_IMAGE_COORDS 2
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#define SCREEN_COORDS 3
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#define SUBDIVIDE 1000
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enum { EXTEND_EDIT, EXTEND_ADD, EXTEND_REMOVE, EXTEND_NEW };
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struct _BezierPoint
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{
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gint type; /* type of point (anchor/control/move) */
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gdouble x, y; /* location of point in image space */
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gint sx, sy; /* location of point in screen space */
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BezierPoint *next; /* next point on curve */
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BezierPoint *prev; /* prev point on curve */
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BezierPoint *next_curve; /* Next curve segment */
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gint pointflags; /* Status of point 0 = not selected
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* 1 = selected
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*/
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};
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struct _BezierSelect
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{
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gint state; /* start, add, edit or drag */
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gint draw; /* all or part */
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gint closed; /* is the last curve closed */
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DrawCore *core; /* Core drawing object */
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BezierPoint *points; /* the curve */
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BezierPoint *cur_anchor; /* the current active anchor point */
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BezierPoint *cur_control; /* the current active control point */
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BezierPoint *last_point; /* the last point on the curve */
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gint num_points; /* number of points in the curve */
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Channel *mask; /* null if the curve is open */
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GSList **scanlines; /* used in converting a curve */
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};
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/* All data that are passed to the bezier_draw_curve must
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* have this structure as the first element.
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*/
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typedef struct
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{
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gint count;
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} CountCurves;
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typedef void (* BezierPointsFunc) (BezierSelect *bezier_sel,
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GdkPoint *points,
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gint n_points,
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gpointer data);
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/* Functions */
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gint bezier_select_load (GDisplay *gdisp,
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BezierPoint *points,
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gint n_points,
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gint closed);
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void bezier_draw_curve (BezierSelect *bezier_sel,
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BezierPointsFunc func,
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gint coord,
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gpointer data);
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void bezier_select_reset (BezierSelect *bezier_sel);
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void bezier_select_free (BezierSelect *bezier_sel);
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void bezier_add_point (BezierSelect *bezier_sel,
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gint type,
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gdouble x,
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gdouble y);
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void bezier_paste_bezierselect_to_current (GDisplay *gdisp,
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BezierSelect *bezier_sel);
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void bezier_select_mode (gint);
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void bezier_stroke (BezierSelect *bezier_sel,
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GDisplay *gdisp,
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gint subdivisions,
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gint open_path);
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void bezier_to_selection (BezierSelect *bezier_sel,
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GDisplay *gdisp);
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gint bezier_distance_along (BezierSelect *bezier_sel,
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gint open_path,
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gdouble dist,
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gint *x,
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gint *y,
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gdouble *gradient);
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void bezier_draw (GDisplay *gdisp,
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BezierSelect *bezier_sel);
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#endif /* __BEZIER_SELECTP_H__ */
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