roc.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:   ROC.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 ROC extends IndicatorBase
{

    private final int m_iParam[] = {
        12, 6
    };

    public ROC(IndicatorPos pos, int Precision)
    {
        super(pos, Precision);
        m_strIndicatorName = "ROC";
        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[] {
            "", "ROCMA"
        });
        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);
        DrawCoordinate(g, 2);
        DrawLine(g, m_data[0], m_iParam[1] + 1, HQApplet.rhColor.clIndicator[0]);
        DrawLine(g, m_data[1], m_iParam[0] + m_iParam[1], HQApplet.rhColor.clIndicator[1]);
    }

    public void Calculate()
    {
        m_data = new float[2][];
        if(m_kData == null || m_kData.length <= 0)
            return;
        int n = m_iParam[0];
        int m = m_iParam[1];
        if(m_kData.length < n || n < 1)
            return;
        m_data[0] = new float[m_kData.length];
        m_data[1] = new float[m_kData.length];
        float roc[] = m_data[0];
        roc[n - 1] = 0.0F;
        for(int i = n; i < m_kData.length; i++)
            if(m_kData[i - n].closePrice == 0.0F)
                roc[i] = roc[i - 1];
            else
                roc[i] = (m_kData[i].closePrice / m_kData[i - n].closePrice - 1.0F) * 100F;

        IndicatorBase.Average(1, m_kData.length, m, roc, m_data[1]);
    }
}