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75 lines
2.1 KiB
75 lines
2.1 KiB
16 years ago
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#ifndef Magnum_Camera_h
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#define Magnum_Camera_h
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/*
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Copyright © 2010 Vladimír Vondruš <mosra@centrum.cz>
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This file is part of Magnum.
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Magnum is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License version 3
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only, as published by the Free Software Foundation.
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Magnum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License version 3 for more details.
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*/
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/** @file
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* @brief Class Magnum::Camera
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*/
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#include "AbstractObject.h"
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namespace Magnum {
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/**
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* @brief Camera object
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*
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* @todo Subclasses - perspective, FBO postprocessing etc.
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*/
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class Camera: public AbstractObject {
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public:
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/** @copydoc AbstractObject::AbstractObject() */
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inline Camera(AbstractObject* parent = 0): AbstractObject(parent) {}
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/**
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* @brief Camera matrix
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*
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* Camera matrix describes world position relative to the camera and is
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* applied as first.
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*/
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Matrix4 cameraMatrix() const;
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/**
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* @brief Projection matrix
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*
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* Projection matrix handles e.g. perspective distortion and is applied
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* as last.
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*/
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virtual inline Matrix4 projectionMatrix() const { return Matrix4(); }
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/**
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* @brief Set viewport
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* @param width Window / buffer width
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* @param height Window / buffer height
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*
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* Called when assigning the camera to the scene or when window
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* size changes. Default implementation preserves aspect ratio and
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* sets viewport to whole window / buffer size.
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*/
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virtual void setViewport(int width, int height);
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/**
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* @brief Draw camera
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*
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* Subclasses can draw for example an HUD. Default implementation does
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* nothing.
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*/
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virtual void draw(const Magnum::Matrix4& transformationMatrix, const Magnum::Matrix4& projectionMatrix) {}
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};
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}
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#endif
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