76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file cylindricalLens.h
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* @author drose
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* @date 2001-12-12
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*/
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#ifndef CYLINDRICALLENS_H
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#define CYLINDRICALLENS_H
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#include "pandabase.h"
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#include "lens.h"
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/**
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* A cylindrical lens. This is the kind of lens generally used for extremely
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* wide panoramic shots. It behaves like a normal perspective lens in the
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* vertical direction, but it is non-linear in the horizontal dimension: a
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* point on the film corresponds to a point in space in linear proportion to
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* its angle to the camera, not to its straight-line distance from the center.
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*
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* This allows up to 360 degree lenses in the horizontal dimension, with
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* relatively little distortion. The distortion is not very apparent between
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* two relatively nearby points on the film, but it becomes increasingly
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* evident as you compare points widely spaced on the film.
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*/
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class EXPCL_PANDAFX CylindricalLens : public Lens {
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PUBLISHED:
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INLINE CylindricalLens();
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public:
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INLINE CylindricalLens(const CylindricalLens ©);
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INLINE void operator = (const CylindricalLens ©);
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public:
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virtual PT(Lens) make_copy() const;
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protected:
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virtual bool do_extrude(const Lens::CData *lens_cdata, const LPoint3 &point2d,
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LPoint3 &near_point, LPoint3 &far_point) const;
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virtual bool do_extrude_vec(const Lens::CData *lens_cdata, const LPoint3 &point2d,
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LVector3 &vec) const;
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virtual bool do_project(const Lens::CData *lens_cdata,
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const LPoint3 &point3d, LPoint3 &point2d) const;
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virtual PN_stdfloat fov_to_film(PN_stdfloat fov, PN_stdfloat focal_length, bool horiz) const;
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virtual PN_stdfloat fov_to_focal_length(PN_stdfloat fov, PN_stdfloat film_size, bool horiz) const;
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virtual PN_stdfloat film_to_fov(PN_stdfloat film_size, PN_stdfloat focal_length, bool horiz) const;
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public:
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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Lens::init_type();
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register_type(_type_handle, "CylindricalLens",
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Lens::get_class_type());
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}
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private:
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static TypeHandle _type_handle;
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};
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#include "cylindricalLens.I"
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#endif
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