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syncvalue.h
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syncvalue.h
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#ifndef TAK__SYNCVALUE_H__
#define TAK__SYNCVALUE_H__
#include <algorithm>
// todo ao
#include <iostream>
class SyncValueManager;
class SyncValue
{
public:
SyncValue(SyncValueManager* svm = 0);
virtual ~SyncValue();
virtual void Update(float elapsedTime) = 0;
private:
SyncValueManager* m_syncValueManager;
};
template <class T>
class SyncValueLinear : public SyncValue
{
public:
SyncValueLinear(T start, T end, float duration, SyncValueManager* svm = 0) : SyncValue(svm), m_start(start), m_end(end), m_duration(duration), m_elapsedTime(0) {}
virtual ~SyncValueLinear() {}
virtual void Update(float elapsedTime)
{
m_elapsedTime += elapsedTime;
m_elapsedTime = std::min(m_duration, m_elapsedTime);
}
T Value() const
{
return m_start + (m_elapsedTime * (m_end - m_start) / m_duration);
}
private:
T m_start;
T m_end;
float m_duration;
float m_elapsedTime;
};
template <class T>
class SyncValueLinearSwing : public SyncValue
{
public:
SyncValueLinearSwing(T start, T end, float duration, SyncValueManager* svm = 0) : SyncValue(svm), m_start(start), m_end(end), m_duration(duration)
{
if(start < end)
{
m_swingUp = true;
m_elapsedTime = 0;
}
else
{
m_swingUp = false;
m_elapsedTime = m_duration;
}
}
virtual ~SyncValueLinearSwing() {}
virtual void Update(float elapsedTime)
{
if(m_swingUp)
{
m_elapsedTime += elapsedTime;
m_elapsedTime = std::min(m_duration, m_elapsedTime);
if(m_elapsedTime == m_duration)
{
m_swingUp = !m_swingUp;
}
}
else
{
m_elapsedTime -= elapsedTime;
m_elapsedTime = std::max(0.f, m_elapsedTime);
if(m_elapsedTime == 0)
{
m_swingUp = !m_swingUp;
}
}
}
T Value() const
{
if(m_start < m_end)
return m_start + (m_elapsedTime * (m_end - m_start) / m_duration);
else
return m_start + ((m_duration - m_elapsedTime) * (m_end - m_start) / m_duration);
}
private:
T m_start;
T m_end;
float m_duration;
float m_elapsedTime;
bool m_swingUp;
};
#endif // SYNCVALUE_H__