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[inkscape.git] / src / sp-guide.h

diff --git a/src/sp-guide.h b/src/sp-guide.h
index a3b87648396ccb48431372bff0e1a9e2e00450f2..a9b04dfaa99b10195df611e4b76f19798905d1a9 100644 (file)
--- a/src/sp-guide.h
+++ b/src/sp-guide.h
@@ -7,6 +7,7 @@
  * A guideline
  *
  * Copyright (C) Lauris Kaplinski 2000
+ * Copyright (C) Johan Engelen 2007
  *
  */
 
@@ -25,26 +26,36 @@
 
 /* Represents the constraint on p that dot(g.direction, p) == g.position. */
 struct SPGuide : public SPObject {
-    NR::Point normal;
-    gdouble position;
+    NR::Point normal_to_line;
+    Geom::Point point_on_line;
+
     guint32 color;
     guint32 hicolor;
     GSList *views;
     std::vector<SPGuideAttachment> attached_items;
+
+    inline bool is_horizontal() const { return (normal_to_line[Geom::X] == 0.); };
+    inline bool is_vertical() const { return (normal_to_line[Geom::Y] == 0.); };
+    inline double angle() const { return std::atan2( - normal_to_line[Geom::X], normal_to_line[Geom::Y] ); };
 };
 
 struct SPGuideClass {
-       SPObjectClass parent_class;
+    SPObjectClass parent_class;
 };
 
 GType sp_guide_get_type();
 
+SPGuide *sp_guide_create(SPDesktop *desktop, Geom::Point const &pt1, Geom::Point const &pt2);
+void sp_guide_pt_pairs_to_guides(SPDocument *doc, std::list<std::pair<Geom::Point, Geom::Point> > &pts);
+
 void sp_guide_show(SPGuide *guide, SPCanvasGroup *group, GCallback handler);
 void sp_guide_hide(SPGuide *guide, SPCanvas *canvas);
 void sp_guide_sensitize(SPGuide *guide, SPCanvas *canvas, gboolean sensitive);
 
-double sp_guide_position_from_pt(SPGuide const *guide, NR::Point const &pt);
-void sp_guide_moveto(SPGuide const &guide, gdouble const position, bool const commit);
+Geom::Point sp_guide_position_from_pt(SPGuide const *guide, NR::Point const &pt);
+double sp_guide_distance_from_pt(SPGuide const *guide, Geom::Point const &pt);
+void sp_guide_moveto(SPGuide const &guide, Geom::Point const point_on_line, bool const commit);
+void sp_guide_set_normal(SPGuide const &guide, Geom::Point const normal_to_line, bool const commit);
 void sp_guide_remove(SPGuide *guide);
 
 char *sp_guide_description(SPGuide const *guide);