1 /*
2 * Perspective line for 3D perspectives
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_PERSPECTIVE_LINE_H
13 #define SEEN_PERSPECTIVE_LINE_H
15 #include "vanishing-point.h"
16 #include "line-geometry.h"
17 #include "box3d-context.h"
18 #include <glib.h>
20 namespace Box3D {
22 class PerspectiveLine : public Box3D::Line {
23 public:
24 /**
25 * Create a perspective line starting at 'pt' and pointing in the direction of the
26 * vanishing point corresponding to 'axis'. If the VP has style VP_FINITE then the
27 * PL runs through it; otherwise it has the direction specified by the v_dir vector
28 * of the VP.
29 */
30 PerspectiveLine (NR::Point const &pt, Box3D::Axis const axis, Perspective3D *perspective);
31 NR::Maybe<NR::Point> intersect (Line const &line); // FIXME: Can we make this return only a NR::Point to remove the extra method meet()?
32 NR::Point meet (Line const &line);
34 private:
35 Box3D::Axis vp_dir; // direction of the associated VP
36 Perspective3D *persp;
37 };
40 } // namespace Box3D
43 /** A function to print out the VanishingPoint (prints the coordinates) **/
44 /***
45 inline std::ostream &operator<< (std::ostream &out_file, const VanishingPoint &vp) {
46 out_file << vp;
47 return out_file;
48 }
49 ***/
52 #endif /* !SEEN_PERSPECTIVE_LINE_H */
54 /*
55 Local Variables:
56 mode:c++
57 c-file-style:"stroustrup"
58 c-file-offsets:((innamespace . 0)(inline-open . 0))
59 indent-tabs-mode:nil
60 fill-column:99
61 End:
62 */
63 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :