Panda3D
Loading...
Searching...
No Matches
cylindricalLens.h
Go to the documentation of this file.
1/**
2 * PANDA 3D SOFTWARE
3 * Copyright (c) Carnegie Mellon University. All rights reserved.
4 *
5 * All use of this software is subject to the terms of the revised BSD
6 * license. You should have received a copy of this license along
7 * with this source code in a file named "LICENSE."
8 *
9 * @file cylindricalLens.h
10 * @author drose
11 * @date 2001-12-12
12 */
13
14#ifndef CYLINDRICALLENS_H
15#define CYLINDRICALLENS_H
16
17#include "pandabase.h"
18
19#include "lens.h"
20
21/**
22 * A cylindrical lens. This is the kind of lens generally used for extremely
23 * wide panoramic shots. It behaves like a normal perspective lens in the
24 * vertical direction, but it is non-linear in the horizontal dimension: a
25 * point on the film corresponds to a point in space in linear proportion to
26 * its angle to the camera, not to its straight-line distance from the center.
27 *
28 * This allows up to 360 degree lenses in the horizontal dimension, with
29 * relatively little distortion. The distortion is not very apparent between
30 * two relatively nearby points on the film, but it becomes increasingly
31 * evident as you compare points widely spaced on the film.
32 */
33class EXPCL_PANDAFX CylindricalLens : public Lens {
34PUBLISHED:
35 INLINE CylindricalLens();
36
37public:
38 INLINE CylindricalLens(const CylindricalLens &copy);
39 INLINE void operator = (const CylindricalLens &copy);
40
41public:
42 virtual PT(Lens) make_copy() const;
43
44protected:
45 virtual bool do_extrude(const Lens::CData *lens_cdata, const LPoint3 &point2d,
46 LPoint3 &near_point, LPoint3 &far_point) const;
47 virtual bool do_extrude_vec(const Lens::CData *lens_cdata, const LPoint3 &point2d,
48 LVector3 &vec) const;
49 virtual bool do_project(const Lens::CData *lens_cdata,
50 const LPoint3 &point3d, LPoint3 &point2d) const;
51
52 virtual PN_stdfloat fov_to_film(PN_stdfloat fov, PN_stdfloat focal_length, bool horiz) const;
53 virtual PN_stdfloat fov_to_focal_length(PN_stdfloat fov, PN_stdfloat film_size, bool horiz) const;
54 virtual PN_stdfloat film_to_fov(PN_stdfloat film_size, PN_stdfloat focal_length, bool horiz) const;
55
56public:
57 virtual TypeHandle get_type() const {
58 return get_class_type();
59 }
60 virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
61 static TypeHandle get_class_type() {
62 return _type_handle;
63 }
64 static void init_type() {
65 Lens::init_type();
66 register_type(_type_handle, "CylindricalLens",
67 Lens::get_class_type());
68 }
69
70private:
71 static TypeHandle _type_handle;
72};
73
74#include "cylindricalLens.I"
75
76#endif
A cylindrical lens.
A base class for any number of different kinds of lenses, linear and otherwise.
Definition lens.h:41
TypeHandle is the identifier used to differentiate C++ class types.
Definition typeHandle.h:81
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
void register_type(TypeHandle &type_handle, const std::string &name)
This inline function is just a convenient way to call TypeRegistry::register_type(),...