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ColorCycle.cpp
143 lines (132 loc) · 2.61 KB
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ColorCycle.cpp
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/*********************************************************************************\
* ColorCycle.cpp
* Class used to cycle through RGB bvalues
* (C) 2002 MasterMind
\*********************************************************************************/
#include <xtl.h>
#include "ColorCycle.h"
#include "utils.h"
CColorCycle::CColorCycle( DWORD dwInitColor )
{
m_byRed = (BYTE)((dwInitColor>>16)&0xff);
m_byGreen = (BYTE)((dwInitColor>>8)&0xff);
m_byBlue = (BYTE)((dwInitColor)&0xff);
// Randomly choose our vectors
int iVectorize;
m_iRedVector = 0;
m_iGreenVector = 0;
m_iBlueVector = 0;
iVectorize = RandomRange(0,7); // rand()%8;
if ( iVectorize == 0 )
{
iVectorize = 1<<(RandomRange(0,2)); // rand()%3);
}
if( iVectorize&0x01)
{
if ( m_byRed > 127 ) m_iRedVector = -1;
else m_iRedVector = 1;
}
if( iVectorize&0x02)
{
if ( m_byGreen > 127 ) m_iGreenVector = -1;
else m_iGreenVector = 1;
}
if( iVectorize&0x04)
{
if ( m_byBlue > 127 ) m_iBlueVector = -1;
else m_iBlueVector = 1;
}
}
DWORD CColorCycle::GetColor( void )
{
DWORD dwReturn;
bool bResetVectors = false;
dwReturn = 0xff;
dwReturn <<=8;
dwReturn |= m_byRed;
dwReturn <<=8;
dwReturn |= m_byGreen;
dwReturn <<=8;
dwReturn |= m_byBlue;
if ( !( m_iRedVector || m_iGreenVector || m_iBlueVector ) )
{
// Problem.... nobody has a vector! Give somebody a vector.
bResetVectors = true;
}
if ( m_iRedVector && ((m_byRed == 0)||(m_byRed == 255 )) )
{
bResetVectors = true;
if ( m_byRed == 255 )
{
m_byRed = 254;
}
else
{
m_byRed = 1;
}
}
else
{
m_byRed += m_iRedVector;
}
if ( m_iGreenVector && ((m_byGreen == 0)||(m_byGreen == 255 )) )
{
bResetVectors = true;
if ( m_byGreen == 255 )
{
m_byGreen = 254;
}
else
{
m_byGreen = 1;
}
}
else
{
m_byGreen += m_iGreenVector;
}
if ( m_iBlueVector && ((m_byBlue == 0)||(m_byBlue == 255 )) )
{
bResetVectors = true;
if ( m_byBlue == 255 )
{
m_byBlue = 254;
}
else
{
m_byBlue = 1;
}
}
else
{
m_byBlue += m_iBlueVector;
}
if ( bResetVectors )
{
int iVectorize;
m_iRedVector = 0;
m_iGreenVector = 0;
m_iBlueVector = 0;
iVectorize = RandomRange(0,7); // rand()%8;
if ( iVectorize == 0 )
{
iVectorize = 1<<(RandomRange(0,2)); // rand()%3);
}
if( iVectorize&0x01)
{
if ( m_byRed > 127 ) m_iRedVector = -1;
else m_iRedVector = 1;
}
if( iVectorize&0x02)
{
if ( m_byGreen > 127 ) m_iGreenVector = -1;
else m_iGreenVector = 1;
}
if( iVectorize&0x04)
{
if ( m_byBlue > 127 ) m_iBlueVector = -1;
else m_iBlueVector = 1;
}
}
return dwReturn;
}