/* The GIMP -- an image manipulation program * * This file Copyright (C) 1999 Simon Budig * * 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. */ #ifndef __PATH_CURVES_H__ #define __PATH_CURVES_H__ #define PATH_TOOL_DEBUG #ifdef PATH_TOOL_DEBUG #include #endif #define IMAGE_COORDS 1 #define AA_IMAGE_COORDS 2 #define SCREEN_COORDS 3 #define SEGMENT_ACTIVE 1 #define PATH_TOOL_DRAG 1 #define PATH_TOOL_REDRAW_ALL 1 #define PATH_TOOL_REDRAW_ACTIVE 2 #define PATH_TOOL_REDRAW_HANDLES 4 #define SUBDIVIDE 1000 typedef enum { SEGMENT_LINE=0, SEGMENT_BEZIER} SegmentType; enum { ON_ANCHOR, ON_HANDLE, ON_CURVE, ON_CANVAS }; typedef struct _path_segment PathSegment; typedef struct _path_curve PathCurve; typedef struct _npath NPath; struct _path_segment { SegmentType type; /* What type of segment */ gdouble x, y; /* location of starting-point in image space */ gpointer data; /* Additional data, dependant of segment-type */ guint32 flags; /* Various Flags: Is the Segment active? */ PathCurve *parent; /* the parent Curve */ PathSegment *next; /* Next Segment or NULL */ PathSegment *prev; /* Previous Segment or NULL */ }; struct _path_curve { PathSegment *segments; /* The segments of the curve */ PathSegment *cur_segment; /* the current segment */ NPath *parent; /* the parent Path */ PathCurve *next; /* Next Curve or NULL */ PathCurve *prev; /* Previous Curve or NULL */ }; struct _npath { PathCurve *curves; /* the curves */ PathCurve *cur_curve; /* the current curve */ GString *name; /* the name of the path */ guint32 state; /* is the path locked? */ /* GimpPathTool *path_tool; */ /* The parent Path Tool */ }; typedef void (*PathTraverseFunc) (NPath *, PathCurve *, gpointer); typedef void (*CurveTraverseFunc) (NPath *, PathCurve *, PathSegment *, gpointer); typedef void (*SegmentTraverseFunc) (NPath *, PathCurve *, PathSegment *, gint, gint, gpointer); /* * This function is to get a set of npoints different coordinates for * the range from start to end (each in the range from 0 to 1 and * start < end). * returns the number of created coords. Make sure that the points- * Array is allocated. */ typedef guint (*PathGetPointsFunc) (PathSegment *segment, gdouble *points, guint npoints, gdouble start, gdouble end); typedef void (*PathGetPointFunc) (PathSegment *segment, gdouble position, gdouble *x, gdouble *y); typedef void (*PathDrawHandlesFunc) (GimpDrawTool *tool, PathSegment *segment); typedef void (*PathDrawSegmentFunc) (GimpDrawTool *tool, PathSegment *segment); typedef gdouble (*PathOnSegmentFunc) (PathSegment *segment, gint x, gint y, gint halfwidth, gint *distance); typedef void (*PathDragSegmentFunc) (PathSegment *segment, gdouble position, gdouble dx, gdouble dy); typedef gint (*PathOnHandlesFunc) (PathSegment *segment, gdouble x, gdouble y, gdouble halfwidth); typedef void (*PathDragHandleFunc) (PathSegment *segment, gdouble dx, gdouble dy, gint handle_id); typedef PathSegment * (*PathInsertAnchorFunc) (PathSegment *segment, gdouble position); typedef void (*PathUpdateSegmentFunc) (PathSegment *segment); typedef void (*PathFlipSegmentFunc) (PathSegment *segment); typedef void (*PathInitSegmentFunc) (PathSegment *segment); typedef void (*PathCleanupSegmentFunc) (PathSegment *segment); typedef struct { PathGetPointsFunc get_points; PathGetPointFunc get_point; PathDrawHandlesFunc draw_handles; PathDrawSegmentFunc draw_segment; PathOnSegmentFunc on_segment; PathDragSegmentFunc drag_segment; PathOnHandlesFunc on_handles; PathDragHandleFunc drag_handle; PathInsertAnchorFunc insert_anchor; PathUpdateSegmentFunc update_segment; PathFlipSegmentFunc flip_segment; PathInitSegmentFunc init_segment; PathCleanupSegmentFunc cleanup_segment; } CurveDescription; guint path_curve_get_points (PathSegment *segment, gdouble *points, guint npoints, gdouble start, gdouble end); void path_curve_get_point (PathSegment *segment, gdouble position, gdouble *x, gdouble *y); void path_curve_draw_handles (GimpDrawTool *tool, PathSegment *segment); void path_curve_draw_segment (GimpDrawTool *tool, PathSegment *segment); gdouble path_curve_on_segment (PathSegment *segment, gint x, gint y, gint halfwidth, gint *distance); void path_curve_drag_segment (PathSegment *segment, gdouble position, gdouble dx, gdouble dy); gint path_curve_on_handle (PathSegment *segment, gdouble x, gdouble y, gdouble halfwidth); void path_curve_drag_handle (PathSegment *segment, gdouble dx, gdouble dy, gint handle_id); PathSegment * path_curve_insert_anchor (PathSegment *segment, gdouble position); void path_curve_update_segment (PathSegment *segment); void path_curve_flip_segment (PathSegment *segment); void path_curve_init_segment (PathSegment *segment); void path_curve_cleanup_segment (PathSegment *segment); /* This is, what Soleil (Olofs little daughter) has to say to this: fc fc g hgvfvv drrrrrrtcc jctfcz w sdzs d bx cv^[ ^[c^[f c vffvcccccccccccccggfc fvx^[c^[x^[x^[x^[x^[x^[x^[ v xbvcbvcxv cxxc xxxx^[x xz^[c^[x^[x^[x^[x^[x^[x^[xxxxxxcccccccxxxxxxxxxxxxxxxvä"åp' hj^[[24~^[[4~^[[1~^[[4~^[[1~^[[4~ ^[[D^[[Bk^[[B,,,,, ,^[[2~^[[4~^[[6~^[[4~l^[[6~,l' .holg^[[B^[[B n,,klmj ^[[B^[[1~j ^[[P^[[B ^[[D^[[4~^[[6~nb ^[[A^[[C ^[[Akj^[[B ^[[A^[[C^[[A ...^[[1~^[[D^[[4~^[[2~^[[C^[[B,^[[A^[[2~^[[C^[[2~^[[A^[[3~^[[A^[[4~ ^[[2~ ^[[2~pö- ., å^[[Aöpl., k,km , m,^[[5~^[[6~^[[2~^[[C^[[3~p^[[A^[[Bö^[[2~^[[B^[[6~^[[1~, .^[[D^[[4~^[[2~^[[Db .l, .,.,m ^[[2~pöl. ik ^[[20~kl9i^[[20~^[[20~^[[20~^[[21~^[[21~^[[21~^[[21~^[[21~^[[21~^[[20~m + ^[[A^[[5~^[[G^[[D ^[[5~^[[1+^[[C */ #endif /* __PATH_CURVES_H__ */