package com.wgcloud.util;
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import com.wgcloud.dto.TuopuNodeDto;
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import java.util.List;
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/**
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* 拓扑图工具类
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*/
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public class TuopuUtil {
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/**
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* 设置每个节点的坐标
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* @param list
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*/
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public static void initList(List<TuopuNodeDto> list) {
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int centerX = 760;//圆心坐标
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int centerY = 520;
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int radius = getRadius(list.size());//半径
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int count = list.size();
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//count: 节点数目
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for (int i = 0; i < list.size(); i++) {
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int x = centerX + (int) (radius * Math.cos(Math.PI * 2 / count * i));
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int y = centerY + (int) (radius * Math.sin(Math.PI * 2 / count * i));
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// System.out.println(x+","+y);
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list.get(i).setX(x);
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list.get(i).setY(y);
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// node[i].setX(x);
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// node[i].setY(y);
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}
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}
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public static int getRadius(int count) {
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if (count == 1) {
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count = 2;
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}
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double disitem = (double) 360 / count;
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double minr = 5 / Math.sin(0.5 * disitem * Math.PI / 180);
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double noder = minr * 1.5 + 5 * 3 + 80;
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if (noder < 260) {
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noder = 260;
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}
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return Integer.valueOf(String.valueOf(noder).substring(0, String.valueOf(noder).indexOf(".")));
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}
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}
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