1 /*
2 * Class modelling a 3D perspective
3 *
4 * Authors:
5 * Maximilian Albert <Anhalter42@gmx.de>
6 *
7 * Copyright (C) 2007 authors
8 *
9 * Released under GNU GPL, read the file 'COPYING' for more information
10 */
12 #ifndef SEEN_PERSPECTIVE3D_H
13 #define SEEN_PERSPECTIVE3D_H
15 #include "vanishing-point.h"
16 #include "svg/stringstream.h"
18 class SP3DBox;
20 namespace Box3D {
22 class PerspectiveLine;
24 class Perspective3D {
25 public:
26 Perspective3D(VanishingPoint const &pt_x, VanishingPoint const &pt_y, VanishingPoint const &pt_z);
27 Perspective3D(Perspective3D &other);
28 ~Perspective3D();
30 bool operator== (Perspective3D const &other);
32 VanishingPoint *get_vanishing_point (Box3D::Axis const dir);
33 Axis get_axis_of_VP (VanishingPoint *vp);
34 void set_vanishing_point (Box3D::Axis const dir, VanishingPoint const &pt);
35 void set_vanishing_point (Box3D::Axis const dir, gdouble pt_x, gdouble pt_y, gdouble dir_x, gdouble dir_y, VPState st);
36 void add_box (SP3DBox *box);
37 void remove_box (const SP3DBox *box);
38 bool has_box (const SP3DBox *box);
39 void reshape_boxes (Box3D::Axis axes);
40 void update_box_reprs ();
42 static gint counter; // for testing only
43 gint my_counter; // for testing only
45 static GSList * perspectives; // All existing 3D perspectives
46 static void add_perspective (Box3D::Perspective3D * const persp);
47 static void remove_perspective (Box3D::Perspective3D * const persp);
48 static Box3D::Perspective3D * find_perspective (Box3D::Perspective3D * const persp); // find an existing perspective whose VPs are equal to those of persp
50 static void print_debugging_info();
51 static Perspective3D * current_perspective;
53 private:
54 VanishingPoint *vp_x;
55 VanishingPoint *vp_y;
56 VanishingPoint *vp_z;
57 GSList * boxes; // holds a list of boxes sharing this specific perspective
58 };
60 Perspective3D * get_persp_of_box (const SP3DBox *box);
61 Perspective3D * get_persp_of_VP (const VanishingPoint *vp);
63 NR::Point perspective_intersection (NR::Point pt1, Box3D::Axis dir1, NR::Point pt2, Box3D::Axis dir2, Perspective3D *persp);
64 NR::Point perspective_line_snap (NR::Point pt, Box3D::Axis dir, NR::Point ext_pt, Perspective3D *persp);
66 } // namespace Box3D
69 /** A function to print out the VanishingPoint (prints the coordinates) **/
70 /***
71 inline std::ostream &operator<< (std::ostream &out_file, const VanishingPoint &vp) {
72 out_file << vp;
73 return out_file;
74 }
75 ***/
78 #endif /* !SEEN_PERSPECTIVE3D_H */
80 /*
81 Local Variables:
82 mode:c++
83 c-file-style:"stroustrup"
84 c-file-offsets:((innamespace . 0)(inline-open . 0))
85 indent-tabs-mode:nil
86 fill-column:99
87 End:
88 */
89 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :