Drawable.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_DRAWABLE_HPP
#define SFML_DRAWABLE_HPP

// Headers
#include <SFML/System/Vector2.hpp>
#include <SFML/Graphics/Color.hpp>
#include <SFML/Graphics/Matrix3.hpp>


namespace sf
{
class RenderTarget;

namespace Blend
{
    enum Mode
    {
        Alpha,    
        Add,      
        Multiply, 
        None      
    };
}

class SFML_API Drawable
{
public :

    Drawable(const Vector2f& Position = Vector2f(0, 0), const Vector2f& Scale = Vector2f(1, 1), float Rotation = 0.f, const Color& Col = Color(255, 255, 255, 255));

    virtual ~Drawable();

    void SetPosition(float X, float Y);

    void SetPosition(const Vector2f& Position);

    void SetX(float X);

    void SetY(float Y);

    void SetScale(float ScaleX, float ScaleY);

    void SetScale(const Vector2f& Scale);

    void SetScaleX(float FactorX);

    void SetScaleY(float FactorY);

    void SetCenter(float CenterX, float CenterY);

    void SetCenter(const Vector2f& Center);

    void SetRotation(float Rotation);

    void SetColor(const Color& Col);

    void SetBlendMode(Blend::Mode Mode);

    const Vector2f& GetPosition() const;

    const Vector2f& GetScale() const;

    const Vector2f& GetCenter() const;

    float GetRotation() const;

    const Color& GetColor() const;

    Blend::Mode GetBlendMode() const;

    void Move(float OffsetX, float OffsetY);

    void Move(const Vector2f& Offset);

    void Scale(float FactorX, float FactorY);

    void Scale(const Vector2f& Factor);

    void Rotate(float Angle);

    sf::Vector2f TransformToLocal(const sf::Vector2f& Point) const;

    sf::Vector2f TransformToGlobal(const sf::Vector2f& Point) const;

protected :

    const Matrix3& GetMatrix() const;

    const Matrix3& GetInverseMatrix() const;

private :

    friend class RenderTarget;

    void Draw(RenderTarget& Target) const;

    virtual void Render(RenderTarget& Target) const = 0;

    // Member data
    Vector2f        myPosition;      
    Vector2f        myScale;         
    Vector2f        myCenter;        
    float           myRotation;      
    Color           myColor;         
    Blend::Mode     myBlendMode;     
    mutable bool    myNeedUpdate;    
    mutable bool    myInvNeedUpdate; 
    mutable Matrix3 myMatrix;        
    mutable Matrix3 myInvMatrix;     
};

} // namespace sf


#endif // SFML_DRAWABLE_HPP