小焦面系统光纤单元定位算法

原创于 2006-03-18 17:11:00 发布 · 1.3k 阅读

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本文介绍了一个用于模拟光纤在MiniFocal平面上分布的Java类。该算法通过多层循环实现不同层数的光纤坐标计算，并应用旋转转换确保光纤位于有效区域内。实现了光纤ID与坐标的一一对应。

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package lamost.sss.temp;

import java.util.LinkedList;
import java.util.*;
import lamost.sss.util.XY;
import lamost.sss.util.FiberTurn;

public class MiniFocal {
    private XY xy = new XY();
    private XY xyTurned = new XY();
    private FiberTurn ft = new FiberTurn();
    public MiniFocal() {
        final float SIN60 = (float) Math.sqrt(3) / 2;
        final float SIN30 = (float) 0.5;
        LinkedList al = new LinkedList();
        int n = 0, m = 0; //n 是光纤的层数，m 是每层第几根光纤
        int fiberID = 1;
        double x = 0.0, y = 0.0;
        for (n = 1; n <= 11; n++) {
            for (m = 0; m < 6 * n; m++) {
                switch (m / n) {
                case 0:

                    x = 25.6 * ( -n * SIN30 + m);
                    y = 25.6 * (SIN60 * n);
                    break;

                case 1:
                    x = 25.6 * (m * SIN30);
                    y = 25.6 * (SIN60 * (2 * n - m));
                    break;

                case 2:
                    x = 25.6 * (2.0 * n - m * SIN30);
                    y = 25.6 * ( -SIN60 * (m - 2 * n));
                    break;

                case 3:
                    x = 25.6 * (3.5 * n - m);
                    y = 25.6 * ( -SIN60 * n);
                    break;

                case 4:
                    x = 25.6 * (1.5 * n - SIN30 * m);
                    y = 25.6 * (SIN60 * (m - 5.0 * n));
                    break;

                case 5:
                    x = 25.6 * ( -3.5 * n + SIN30 * m);
                    y = 25.6 * (SIN60 * (m - 5.0 * n));
                    break;
                }

                if ((Math.sqrt(x * x + y * y) < ((490.0 - 33.0) / 2.0))
                    && (Math.sqrt(x * x + y * y) > ((80.0 + 25.6) / 2.0))
                        ){
                    xy.setX(x);
                    xy.setY(y);
                    xyTurned = ft.FibersTurn(xy, 30);
                    System.out.println(fiberID++ +","+xyTurned.getX()+","+xyTurned.getY()+",1,");
                }
            }
        }
        System.out.println(al.size());
    }
    public static void main(String[] args) {
        new MiniFocal();

}
}