Discrete.h

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#pragma once
 
#include "../Animation.h"
 
namespace Gorgon { namespace Animation {
 
    // Represents an instance of a discrete animation made out of frames
    class DiscreteAnimation : public virtual Base {
    public:
 
        virtual unsigned CurrentFrame() const = 0;
 
        static const unsigned NoFrame = (unsigned)-1;
    };
 
    class Frame {
    public:
        virtual ~Frame() { }
        
        virtual unsigned GetDuration() const = 0;
 
        virtual unsigned GetStart() const = 0;
 
        virtual unsigned GetEnd() const {
            return GetStart() + GetDuration();
        }
 
        virtual bool IsIn(unsigned time) const {
            return time >= GetStart() && time < GetEnd();
        }
    };
 
    class DiscreteProvider : public virtual Provider {
    public:
        virtual void Add(const Frame &frame) = 0;
 
        virtual void Insert(const Frame &frame, int before) = 0;
 
        virtual void MoveBefore(unsigned index, int before) = 0;
 
        virtual void Remove(unsigned index) = 0;
 
        virtual const Frame &FrameAt(int index) const = 0;
 
        const Frame &operator[](int index) const { return FrameAt(index); }
 
        virtual unsigned StartOf(unsigned frame) const = 0;
 
        virtual unsigned GetDuration() const = 0;
 
        virtual unsigned GetDuration(unsigned frame) const = 0;
 
        virtual void Clear() = 0;
 
        virtual int GetCount() const = 0;
 
    protected:
    };
} }