View.hpp

 
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2009 Laurent Gomila (laurent.gom@gmail.com)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
//    you must not claim that you wrote the original software.
//    If you use this software in a product, an acknowledgment
//    in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
//    and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
 
#ifndef SFML_VIEW_HPP
#define SFML_VIEW_HPP
 
// Headers
#include <SFML/Config.hpp>
#include <SFML/Graphics/Rect.hpp>
#include <SFML/Graphics/Matrix3.hpp>
#include <SFML/System/Vector2.hpp>
 
 
namespace sf
{
class RenderTarget;
 
class SFML_API View
{
public :
 
    explicit View(const FloatRect& ViewRect = FloatRect(0, 0, 1000, 1000));
 
    View(const sf::Vector2f& Center, const sf::Vector2f& HalfSize);
 
    void SetCenter(float X, float Y);
 
    void SetCenter(const sf::Vector2f& Center);
 
    void SetHalfSize(float HalfWidth, float HalfHeight);
 
    void SetHalfSize(const sf::Vector2f& HalfSize);
 
    void SetFromRect(const FloatRect& ViewRect);
 
    const sf::Vector2f& GetCenter() const;
 
    const sf::Vector2f& GetHalfSize() const;
 
    const sf::FloatRect& GetRect() const;
 
    void Move(float OffsetX, float OffsetY);
 
    void Move(const sf::Vector2f& Offset);
 
    void Zoom(float Factor);
 
private :
 
    friend class RenderTarget;
 
    const Matrix3& GetMatrix() const;
 
    void RecomputeMatrix();
 
    // Member data
    sf::Vector2f myCenter;     
    sf::Vector2f myHalfSize;   
    FloatRect    myRect;       
    Matrix3      myMatrix;     
    bool         myNeedUpdate; 
};
 
} // namespace sf
 
 
#endif // SFML_VIEW_HPP