68 lines
1.2 KiB
C++
68 lines
1.2 KiB
C++
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#include "StdAfx.h"
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#include "GrpRatioInstance.h"
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#include "../eterBase/Timer.h"
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CGraphicRatioInstance::CGraphicRatioInstance()
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{
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m_baseTime = 0;
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m_blendTime = 0;
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}
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CGraphicRatioInstance::~CGraphicRatioInstance()
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{
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}
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void CGraphicRatioInstance::Clear()
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{
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m_curRatio = 0.0f;
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m_srcRatio = 0.0f;
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m_dstRatio = 0.0f;
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m_baseTime = 0;
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m_blendTime = 0;
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}
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void CGraphicRatioInstance::SetRatioReference(const float& c_rRatio)
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{
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m_curRatio = c_rRatio;
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m_srcRatio = m_curRatio;
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m_dstRatio = m_curRatio;
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}
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void CGraphicRatioInstance::BlendRatioReference(DWORD blendTime, const float& c_rDstRatio)
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{
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m_baseTime = GetTime();
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m_blendTime = blendTime;
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m_srcRatio = m_curRatio;
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m_dstRatio = c_rDstRatio;
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}
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void CGraphicRatioInstance::Update()
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{
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DWORD curTime = GetTime();
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DWORD elapsedTime = curTime - m_baseTime;
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if (elapsedTime < m_blendTime)
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{
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float diff = m_dstRatio - m_srcRatio;
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float rate = elapsedTime / float(m_blendTime);
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m_curRatio = diff * rate + m_srcRatio;
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}
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else
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{
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m_curRatio = m_dstRatio;
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}
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}
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DWORD CGraphicRatioInstance::GetTime()
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{
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return CTimer::Instance().GetCurrentMillisecond();
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}
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const float& CGraphicRatioInstance::GetCurrentRatioReference() const
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{
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return m_curRatio;
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}
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