brar.java

一份java写的期货交易程序

// Decompiled by Jad v1.5.7g. Copyright 2000 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi 
// Source File Name:   BRAR.java

package gnnt.MEBS.HQApplet.Indicator;

import gnnt.MEBS.HQApplet.*;
import java.awt.Graphics;
import java.awt.Rectangle;

// Referenced classes of package gnnt.MEBS.HQApplet.Indicator:
//            IndicatorBase, IndicatorPos

public class BRAR extends IndicatorBase
{

    private final int m_iParam[] = {
        26
    };

    public BRAR(IndicatorPos pos, int Precision)
    {
        super(pos, Precision);
        m_strIndicatorName = "BRAR";
        m_strIndicatorName += "(";
        for(int i = 0; i < m_iParam.length; i++)
        {
            if(i > 0)
                m_strIndicatorName += ",";
            m_strIndicatorName += m_iParam[i];
        }

        m_strIndicatorName += ")";
        m_strParamName = (new String[] {
            "AR", "BR"
        });
        m_iPrecision = 2;
    }

    public void Paint(Graphics g, Rectangle rc, KLineData data[])
    {
        super.Paint(g, rc, data);
        Calculate();
        m_max = -10000F;
        m_min = 10000F;
        GetValueMaxMin(m_data[0], m_iParam[0] + 1);
        GetValueMaxMin(m_data[1], m_iParam[0] + 1);
        DrawCoordinate(g, 2);
        DrawLine(g, m_data[0], m_iParam[0] + 1, HQApplet.rhColor.clIndicator[0]);
        DrawLine(g, m_data[1], m_iParam[0] + 1, HQApplet.rhColor.clIndicator[1]);
    }

    public void Calculate()
    {
        m_data = new float[2][];
        if(m_kData == null || m_kData.length <= 0)
        {
            return;
        } else
        {
            m_data[0] = new float[m_kData.length];
            m_data[1] = new float[m_kData.length];
            GetAR(m_iParam[0], m_data[0]);
            GetBR(m_iParam[0], m_data[1]);
            return;
        }
    }

    private void GetAR(int n, float ar[])
    {
        if(m_kData.length < n)
            return;
        float downsum;
        float upsum = downsum = 0.0F;
        for(int i = 1; i < n; i++)
        {
            upsum += m_kData[i].highPrice - m_kData[i].openPrice;
            downsum += m_kData[i].openPrice - m_kData[i].lowPrice;
        }

        float prear = 0.0F;
        for(int i = n; i < m_kData.length; i++)
        {
            upsum += m_kData[i].highPrice - m_kData[i].openPrice;
            downsum += m_kData[i].openPrice - m_kData[i].lowPrice;
            ar[i] = prear;
            if(downsum != 0.0F)
                ar[i] = (upsum / downsum) * 100F;
            prear = ar[i];
            int j = (i - n) + 1;
            upsum -= m_kData[j].highPrice - m_kData[j].openPrice;
            downsum -= m_kData[j].openPrice - m_kData[j].lowPrice;
        }

    }

    private void GetBR(int n, float br[])
    {
        if(m_kData.length < n)
            return;
        float downsum;
        float upsum = downsum = 0.0F;
        for(int i = 1; i < n; i++)
        {
            float value = m_kData[i].highPrice - m_kData[i - 1].closePrice;
            upsum += value > 0.0F ? value : 0.0F;
            value = m_kData[i - 1].closePrice - m_kData[i].lowPrice;
            downsum += value > 0.0F ? value : 0.0F;
        }

        float prebr = 0.0F;
        for(int i = n; i < m_kData.length; i++)
        {
            float value = m_kData[i].highPrice - m_kData[i - 1].closePrice;
            upsum += value > 0.0F ? value : 0.0F;
            value = m_kData[i - 1].closePrice - m_kData[i].lowPrice;
            downsum += value > 0.0F ? value : 0.0F;
            br[i] = prebr;
            if(downsum != 0.0F)
                br[i] = (upsum / downsum) * 100F;
            prebr = br[i];
            int j = (i - n) + 1;
            value = m_kData[j].highPrice - m_kData[j - 1].closePrice;
            upsum -= value > 0.0F ? value : 0.0F;
            value = m_kData[j - 1].closePrice - m_kData[j].lowPrice;
            downsum -= value > 0.0F ? value : 0.0F;
        }

    }
}