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pSphereLens.h
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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 pSphereLens.h
10 * @author drose
11 * @date 2001-12-12
12 */
13
14#ifndef PSPHERELENS_H
15#define PSPHERELENS_H
16
17#include "pandabase.h"
18
19#include "lens.h"
20
21/**
22 * A PSphereLens is a special nonlinear lens that doesn't correspond to any
23 * real physical lenses. It's primarily useful for generating 360-degree
24 * wraparound images while avoiding the distortion associated with fisheye
25 * images.
26 *
27 * A PSphereLens is similar to a cylindrical lens, except it is also curved in
28 * the vertical direction. This allows it to extend to both poles in the
29 * vertical direction. The mapping is similar to what many modeling packages
30 * call a sphere mapping: the x coordinate is proportional to azimuth, while
31 * the y coordinate is proportional to altitude.
32 */
33 class EXPCL_PANDAFX PSphereLens : public Lens {
34PUBLISHED:
35 INLINE PSphereLens();
36
37 public:
38 INLINE PSphereLens(const PSphereLens &copy);
39 INLINE void operator = (const PSphereLens &copy);
40
41 public:
42 virtual PT(Lens) make_copy() const;
43
44 protected:
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_project(const Lens::CData *lens_cdata,
48 const LPoint3 &point3d, LPoint3 &point2d) const;
49
50 virtual PN_stdfloat fov_to_film(PN_stdfloat fov, PN_stdfloat focal_length, bool horiz) const;
51 virtual PN_stdfloat fov_to_focal_length(PN_stdfloat fov, PN_stdfloat film_size, bool horiz) const;
52 virtual PN_stdfloat film_to_fov(PN_stdfloat film_size, PN_stdfloat focal_length, bool horiz) const;
53
54 public:
55 virtual TypeHandle get_type() const {
56 return get_class_type();
57 }
58 virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
59 static TypeHandle get_class_type() {
60 return _type_handle;
61 }
62 static void init_type() {
63 Lens::init_type();
64 register_type(_type_handle, "PSphereLens",
65 Lens::get_class_type());
66 }
67
68 private:
69 static TypeHandle _type_handle;
70};
71
72#include "pSphereLens.I"
73
74#endif
TypeHandle
TypeHandle is the identifier used to differentiate C++ class types.
Definition typeHandle.h:81
lens.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pSphereLens.I
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pandabase.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
register_type
void register_type(TypeHandle &type_handle, const std::string &name)
This inline function is just a convenient way to call TypeRegistry::register_type(),...
Definition register_type.I:22