trix.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:   TRIX.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 TRIX extends IndicatorBase
{

    private final int m_iParam[] = {
        12, 9
    };

    public TRIX(IndicatorPos pos, int Precision)
    {
        super(pos, Precision);
        m_strIndicatorName = "TRIX";
        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[] {
            "", ""
        });
        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] * 3 - 3);
        GetValueMaxMin(m_data[1], ((m_iParam[0] * 3 - 3) + m_iParam[1]) - 1);
        DrawCoordinate(g, 2);
        DrawLine(g, m_data[0], m_iParam[0] * 3 - 3, HQApplet.rhColor.clIndicator[0]);
        DrawLine(g, m_data[1], ((m_iParam[0] * 3 - 3) + m_iParam[1]) - 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];
            GetEXPMA(m_iParam[0], m_data[0]);
            IndicatorBase.Average(m_iParam[0] - 1, m_kData.length, m_iParam[0], m_data[0], m_data[1]);
            IndicatorBase.Average(m_iParam[0] * 2 - 2, m_kData.length, m_iParam[0], m_data[1], m_data[0]);
            IndicatorBase.Average(m_iParam[0] * 3 - 3, m_kData.length, m_iParam[1], m_data[0], m_data[1]);
            return;
        }
    }

    private void GetEXPMA(int n, float expma[])
    {
        float xs = 2.0F / (float)(n + 1);
        expma[0] = m_kData[0].closePrice;
        for(int i = 1; i < m_kData.length; i++)
            expma[i] = (m_kData[i].closePrice - expma[i - 1]) * xs + expma[i - 1];

    }
}