MFC - OLE 작업중 차트관련

차트의 Min 과 Max를 적절히 조절하기 위한 함수

만든이 - 민승기

void CKoreaMarket::calcGridStep( double *pdMin, double *pdMax, int num )

{

double step = (*pdMax - *pdMin ) / num;

step = (*pdMax - *pdMin) / (num - 1) ;

if( step < 0 )

{

*pdMax = *pdMin = 0; step = 0;

}

if( step == 0 ) step = 1.0;

else if( step < 0.001 ) step = ((int)(step * 10000) + 1) / 10000.0;

else if( step < 0.01 ) step = ((int)(step * 1000) + 1) / 1000.0;

else if( step < 0.1 ) step = ((int)(step * 100) + 1) / 100.0;

else if( step < 1 ) step = ((int)(step * 10) + 1) / 10.0;

else if( step < 10 ) step = (int)(step + 1);

else if( step < 100 ) step = ((int)(step / 10) + 1) * 10;

else if( step < 1000 ) step = ((int)(step / 100) + 1) * 100;

else if( step < 10000 ) step = ((int)(step / 1000) + 1) * 1000;

else if( step < 100000 ) step = ((int)(step / 10000) + 1) * 10000;

else if( step < 1000000 ) step = ((int)(step / 100000) + 1) * 100000;

else if( step < 10000000 ) step = ((int)(step / 1000000) + 1) * 1000000;

if( *pdMin >= 0 ) {

if((int)(*pdMin/step) * step == *pdMin){

*pdMin = (int)(*pdMin/step - 0.5) * step; // adjust min

}

else{

*pdMin = (int)(*pdMin/step)*step;

}

} else {

if((int)(*pdMin/step - 1) * step == *pdMin)

*pdMin = (int)(*pdMin/step - 1.5) * step; // adjust min

else

*pdMin = (int)(*pdMin/step - 1) * step;

}

*pdMax = *pdMin + step * num; // adjust min & max

// return step;

}