#include "BaseColor.h"

//彩色方式

// 计算变密度显示时的颜色
int GetVDLDefaultColor(QColor *crColor,int nColorNum,int iMode)
{
    int i,r,g,b;
    float flWidth,flTemp,temp;

    if ( nColorNum > 256 ) nColorNum = 256;
    flTemp = 255. / nColorNum;
    if ( iMode == MONO_MODE ) nColorNum = 2;

    for (i=0; i<nColorNum; i++)
    {
        switch ( iMode )
        {
        case	COLOR_MODE:   // 彩色
            temp = 255. * (float)(nColorNum-i) / (float)nColorNum;
            g = temp;
            if ( i > nColorNum / 2 )
                temp = 255. * 2.*(float)(nColorNum-i) / (float)nColorNum;
            else
                temp = 255;
            r = temp;
            if ( i > nColorNum / 2 )
                temp = 255. *  (float)(nColorNum-i) / (float)(nColorNum*2);
            else
                temp = 255. * 6.*((float)nColorNum/2.-i)*((float)nColorNum/2-i)*((float)nColorNum/2-i)
                / (float)(nColorNum*nColorNum*nColorNum);
            b = temp;
            break;
        case GRAY_MODE:    // 灰度
            flWidth = (nColorNum-i) * flTemp;
            r = (int)flWidth ;
            g = (int)(flWidth );
            b = (int)(flWidth );
            break;
        case MONO_MODE:   // 二值
            if (i== 0) r = g = b = 255;
            else r = g = b =0;
            break;
        }
        crColor[i] = qRgb(r,g,b);
    }
    return nColorNum;
}