port from perforce

evoke-64k/trunk/ev10/VUMeter.h

@@ -0,0 +1,43 @@
+#pragma once
+
+struct SVUMeter
+{
+	const static int m_iBufferLength= 441;
+	float m_fVUData[ m_iBufferLength ];
+	int m_iLastPos;
+
+	SVUMeter()
+	{
+		m_iLastPos= 0;
+		for( int i= 0; i < m_iBufferLength; ++i )
+		{
+			m_fVUData[ i ]= 0.0f;
+		}
+	}
+
+	void Set(	int iPos,
+		float fVal )
+	{
+		iPos= iPos % m_iBufferLength;
+		while( true )
+		{
+			m_fVUData[ m_iLastPos ]= fVal;
+			if( m_iLastPos != iPos )
+			{
+				m_iLastPos++;
+				m_iLastPos= m_iLastPos % m_iBufferLength;
+			}
+			else
+			{
+				break;
+			}
+		}
+	}
+
+	float Get( int iPos )
+	{
+		iPos= iPos % m_iBufferLength;
+		return m_fVUData[ iPos ];
+	}
+
+};