View.hpp

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//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2024 Laurent Gomila (laurent@sfml-dev.org)
//
// 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.
//
 
#pragma once

// Headers
#include <SFML/Graphics/Export.hpp>
 
#include <SFML/Graphics/Rect.hpp>
#include <SFML/Graphics/Transform.hpp>
 
#include <SFML/System/Angle.hpp>
#include <SFML/System/Vector2.hpp>
 
 
namespace sf
{
class SFML_GRAPHICS_API View
{
public:
    View() = default;

    explicit View(const FloatRect& rectangle);

    View(Vector2f center, Vector2f size);

    void setCenter(Vector2f center);

    void setSize(Vector2f size);

    void setRotation(Angle angle);

    void setViewport(const FloatRect& viewport);

    void setScissor(const FloatRect& scissor);

    [[nodiscard]] Vector2f getCenter() const;

    [[nodiscard]] Vector2f getSize() const;

    [[nodiscard]] Angle getRotation() const;

    [[nodiscard]] const FloatRect& getViewport() const;

    [[nodiscard]] const FloatRect& getScissor() const;

    void move(Vector2f offset);

    void rotate(Angle angle);

    void zoom(float factor);

    [[nodiscard]] const Transform& getTransform() const;

    [[nodiscard]] const Transform& getInverseTransform() const;
 
private:
    // Member data
    Vector2f  m_center{500, 500};           
    Vector2f  m_size{1000, 1000};           
    Angle     m_rotation;                   
    FloatRect m_viewport{{0, 0}, {1, 1}};   
    FloatRect m_scissor{{0, 0}, {1, 1}};    
    mutable Transform m_transform;          
    mutable Transform m_inverseTransform;   
    mutable bool      m_transformUpdated{}; 
    mutable bool      m_invTransformUpdated{}; 
};
 
} // namespace sf
 

//