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/*************************************************************************
* Copyright (C) 2008 Tavian Barnes <tavianator@gmail.com> *
* *
* This file is part of The Dimension Library. *
* *
* The Dimension Library is free software; you can redistribute it and/ *
* or modify it under the terms of the GNU Lesser General Public License *
* as published by the Free Software Foundation; either version 3 of the *
* License, or (at your option) any later version. *
* *
* The Dimension Library is distributed in the hope that it will be *
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty *
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this program. If not, see *
* <http://www.gnu.org/licenses/>. *
*************************************************************************/
// dmnsn_camera* wrapper.
#ifndef DIMENSIONXX_CAMERA_HPP
#define DIMENSIONXX_CAMERA_HPP
namespace Dimension
{
// Abstract base camera class. Wraps a dmnsn_camera*.
class Camera
{
public:
// No-op
virtual ~Camera();
// Camera callback
virtual Line ray(const Canvas& canvas, unsigned int x, unsigned int y);
// Shallow-copy a derived camera
virtual Camera* copy() const = 0;
// Access the wrapped C camera.
dmnsn_camera* dmnsn();
const dmnsn_camera* dmnsn() const;
protected:
// No-op
Camera();
// Shallow-copy
Camera(const Camera& camera);
// Wrap an existing camera
explicit Camera(dmnsn_camera* camera);
// Is m_camera unique?
bool unique() const;
// Set the wrapped C camera
void dmnsn(dmnsn_camera* camera);
private:
// Copy-assignment prohibited
Camera& operator=(const Camera&);
std::tr1::shared_ptr<dmnsn_camera*> m_camera;
};
// A custom camera abstract base class, for creating your own camera types
class Custom_Camera : public Camera
{
public:
Custom_Camera();
virtual ~Custom_Camera();
virtual Line ray(const Canvas& canvas, unsigned int x, unsigned int y) = 0;
};
}
#endif /* DIMENSIONXX_CAMERA_HPP */
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