package java2d;import java.awt.*;import java.awt.geom.Line2D;import java.awt.geom.Rectangle2D;import java.sql.Connection;public class LY extends AnimatingSurface {    //public long sleepAmount = 500;    private Connection con;    private String samptime, disptime;    private int aw, ah;    private int columnInc;    private int pts[];    private int ptNum, start, end;    private float rtd;    private double doubleResult;    private Rectangle graphOutlineRect = new Rectangle();    private Rectangle2D mfRect = new Rectangle2D.Float();    private Rectangle2D muRect = new Rectangle2D.Float();    private Line2D graphLine = new Line2D.Float();    private Color graphColor = new Color(46, 139, 87);    private Color mfColor = new Color(0, 100, 0);    public LY() {        setBackground(Color.white);        name = "風機左Y";        if (Java2Demo.connection != null) {            con = Java2Demo.connection;        }    }    public void reset(int w, int h) {    }    public void step(int w, int h) {    }    public void render(int w, int h, Graphics2D g2) {        // g2.setBackground(getBackground());        g2.setBackground(Color.black);        aw = w;        g2.clearRect(0, 0, w, h);        g2.setColor(graphColor);        //draw grahpicoutlinerect        int graphX = 20;        int graphY = 40;        //int graphW=w-graphX-5;        int graphW = w - graphX - 20;        int graphH = h - graphY - 20;        //        System.out.println("the width is:" + graphW);        int LT = graphW / 2;        System.out.println("the LT is" + LT);        graphOutlineRect.setRect(graphX, graphY, graphW, graphH);        g2.draw(graphOutlineRect);        int graphRow = graphH / 10;        //draw row...        for (int j = graphY; j <= graphH + graphY; j += graphRow) {            graphLine.setLine(graphX, j, graphX + graphW, j);            g2.draw(graphLine);        }        int plotY = graphY + 5 * graphRow;        g2.drawString("5", graphX - 7, graphY + 3);        g2.drawString("0", graphX - 7, graphY + 5 * graphRow + 3);        g2.drawString("-5", graphX - 11, graphY + graphH + 3);        //draw animated column movement....        int graphColumn = graphW / 15;        if (columnInc == 0) {            columnInc = graphColumn;        }        for (int j = graphX + columnInc; j < graphW + graphX; j += graphColumn) {            graphLine.setLine(j, graphY, j, graphY + graphH);            g2.draw(graphLine);        }        --columnInc;        //plot        g2.setColor(Color.yellow);        g2.drawString("風機左Y方向 振動波形圖     單位:毫米", graphX + graphW / 4, graphY / 2);        if (Java2Demo.pArrayLY != null) {            realdata = Java2Demo.pArrayLY.lastdata;            g2.drawString(Java2Demo.pArrayLY.inputtime, graphX + graphW - 27,                          graphY + graphH + 12);            ptNum = Java2Demo.pArrayLY.getptNum();            System.out.println("" + ptNum);            if (ptNum > LT) {                start = ptNum - LT;                end = LT;            } else {                start = 0;                end = ptNum;            }            int space = 2;            for (int j = graphX + graphW - end * space, k = start; k < ptNum; k++,                    j += space) {                if (k != start) {                    if (plotY - (int) (Java2Demo.pArrayLY.pts[k] * graphH / 20) !=                        plotY -                        (int) (Java2Demo.pArrayLY.pts[k - 1] * graphH / 20)) {                        g2.drawLine(j - space,                                    plotY -                                    (int) (Java2Demo.pArrayLY.pts[k -                                           1] * graphH / 20), j,                                    plotY -                                    (int) (Java2Demo.pArrayLY.pts[k] * graphH /                                           20));                    } else {                        g2.fillRect(j,                                    plotY -                                    (int) (Java2Demo.pArrayLY.pts[k] * graphH /                                           20),                                    1, 1);                    }                }            }        }    }}