// 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:   RSI.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 RSI extends IndicatorBase
{

    private final int m_iParam[] = {
        6, 12, 24
    };

    public RSI(IndicatorPos pos, int Precision)
    {
        super(pos, Precision);
        m_strIndicatorName = "RSI(" + m_iParam[0] + "," + m_iParam[1] + "," + m_iParam[2] + ")";
        m_strParamName = (new String[] {
            "RSI1", "RSI2", "RSI3"
        });
        m_iPrecision = 2;
    }

    public void Paint(Graphics g, Rectangle rc, KLineData data[])
    {
        if(data == null || data.length == 0)
            return;
        super.Paint(g, rc, data);
        Calculate();
        m_max = 0.0F;
        m_min = 10000F;
        for(int i = 0; i < 3; i++)
            GetValueMaxMin(m_data[i], m_iParam[i]);

        DrawCoordinate(g, 2);
        for(int i = 0; i < 3; i++)
            DrawLine(g, m_data[i], m_iParam[i], HQApplet.rhColor.clIndicator[i]);

    }

    public void Calculate()
    {
        m_data = new float[3][m_kData.length];
        if(m_kData == null || m_kData.length == 0)
            return;
        for(int i = 0; i < 3; i++)
            GetRSI(m_iParam[i], m_data[i]);

    }

    private void GetRSI(int n, float rsi[])
    {
        if(n > m_kData.length || n < 1)
            return;
        float up = 0.0F;
        float down = 0.0F;
        for(int i = 1; i < n; i++)
            if(m_kData[i].closePrice > m_kData[i - 1].closePrice)
                up += m_kData[i].closePrice - m_kData[i - 1].closePrice;
            else
                down += m_kData[i - 1].closePrice - m_kData[i].closePrice;

        if(up + down == 0.0F)
            rsi[n - 1] = 50F;
        else
            rsi[n - 1] = (up / (up + down)) * 100F;
        float predown;
        float preup = predown = 0.0F;
        for(int i = n; i < m_kData.length; i++)
        {
            up -= preup;
            down -= predown;
            if(m_kData[i].closePrice > m_kData[i - 1].closePrice)
                up += m_kData[i].closePrice - m_kData[i - 1].closePrice;
            else
                down += m_kData[i - 1].closePrice - m_kData[i].closePrice;
            if(up + down == 0.0F)
                rsi[i] = rsi[i - 1];
            else
                rsi[i] = (up / (up + down)) * 100F;
            preup = predown = 0.0F;
            if(m_kData[(i - n) + 1].closePrice > m_kData[i - n].closePrice)
                preup = m_kData[(i - n) + 1].closePrice - m_kData[i - n].closePrice;
            else
                predown = m_kData[i - n].closePrice - m_kData[(i - n) + 1].closePrice;
        }

    }
}