java代码实现空间切割

2024-04-02 19:04:59 590人浏览八月长安

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摘要

目录问题代码效果演示测试数据结果总结问题给定一个大的立方体和一批小的立方体，对于每个立方体，都知道如图的信息（知道x,y,z坐标和长、宽、高），且任意小立方体都被包含在大立方体内、

问题

给定一个大的立方体和一批小的立方体，对于每个立方体，都知道如图的信息（知道x,y,z坐标和长、宽、高），且任意小立方体都被包含在大立方体内、各立方体之间不重叠。问如何将小立方体从大立方体中切去，留下其他空间？

在这里插入图片描述

代码

package com.dam.alGorithm.algorithmPackage.freeSpaceTubePackingAlgorithm.util;

import com.dam.algorithm.common.entity.FreeSpace;
import com.dam.algorithm.common.entity.spiltSpace.Point;
import com.dam.algorithm.common.util.DeepCloneUtil;

import java.util.ArrayList;
import java.util.List;



public class GetUsedSpaceUtil {

    private double offSet = 0.01;

    public static void main(String[] args) throws Exception {
        FreeSpace bigFreeSpace = new FreeSpace(0, 0, 0, 100, 100, 100);
        List<FreeSpace> freeSpaceList = new ArrayList<>();
        List<FreeSpace> usedSpaceList = new ArrayList<>();
        usedSpaceList.add(new FreeSpace(0, 50, 50, 30, 30, 30));
        usedSpaceList.add(new FreeSpace(0, 90, 90, 10, 5, 5));

        new GetUsedSpaceUtil().getFreeSpaceUtil(bigFreeSpace, freeSpaceList, usedSpaceList);
        System.out.println(freeSpaceList);
    }

    public void getFreeSpaceUtil(FreeSpace bigFreeSpace, List<FreeSpace> freeSpaceList, List<FreeSpace> usedSpaceList) throws Exception {

        //检验数据是否正确
        boolean flag = this.inspectionData(bigFreeSpace, usedSpaceList);
        if (flag == false) {
            throw new Exception("输入数据有误");
        }

        //处理第一个已用空间
        FreeSpace firstUsedSpace = usedSpaceList.remove(0);
        //获得一批剩余空间，用这些剩余空间来处理后面的usedSpaceList
        List<FreeSpace> freeSpaces = this.eliminateSpace(bigFreeSpace, firstUsedSpace);

        //处理剩下的空间
        while (usedSpaceList.size() > 0) {
            FreeSpace firstUsedSpace1 = usedSpaceList.remove(0);
            List<FreeSpace> removeFreeSpaceList = new ArrayList<>();
            List<FreeSpace> addFreeSpaceList = new ArrayList<>();
            System.out.println("freeSpaces:" + freeSpaces);
            for (FreeSpace freeSpace : freeSpaces) {
                //判断有没有交集
                System.out.println("判断有无交集：");
                System.out.println("空间1" + freeSpace.toString());
                System.out.println("空间2" + firstUsedSpace1.toString());
                int state = this.judgeSpaceRelationship(freeSpace, firstUsedSpace1);
                System.out.println("有无交集state：" + state);
                if (state == 0) {
                    continue;
                } else if (state == 1) {
                    //有交集就要移除
                    removeFreeSpaceList.add(freeSpace);
                    List<FreeSpace>[] spaceArray = this.splitSpace(firstUsedSpace1, freeSpace);
                    //已用空间的分解空间
                    List<FreeSpace> usedList = spaceArray[0];
                    //剩余空间的分解空间
                    List<FreeSpace> freeList = spaceArray[1];
                    addFreeSpaceList.addAll(freeList);
                    //将已用空间的分解空间添加到分解空间列表
                    usedSpaceList.addAll(usedList);
                } else if (state == 2) {
                    removeFreeSpaceList.add(freeSpace);
                    //剩余空间全包含已用空间
                    List<FreeSpace> freeSpaceList1 = this.eliminateSpace(freeSpace, firstUsedSpace1);
                    freeSpaces.addAll(freeSpaceList1);
                    //因为剩余空间包含已用空间，可以直接break
                    break;
                } else if (state == 3) {
                    removeFreeSpaceList.add(freeSpace);
                    //已用空间全包含剩余空间
                    List<FreeSpace> freeSpaceList1 = this.eliminateSpace(firstUsedSpace1, freeSpace);
                    usedSpaceList.addAll(freeSpaceList1);
                }
                System.out.println("来到这里");
            }
            //将分割得到的剩余空间添加回来，以便给下一个已用空间使用
            freeSpaces.addAll(addFreeSpaceList);
            //减去已经使用的剩余空间
            freeSpaces.removeAll(removeFreeSpaceList);
        }

        //存储最终的剩余空间
        freeSpaceList.addAll((List<FreeSpace>) DeepCloneUtil.deepClone(freeSpaces));

        System.out.println("最终剩余空间");
        System.out.println("剩余空间数量" + freeSpaceList.size());
        System.out.println(freeSpaceList);
    }

    
    private boolean inspectionData(FreeSpace bigFreeSpace, List<FreeSpace> usedSpaceList) {

        for (int i = 0; i < usedSpaceList.size(); i++) {
            //判断是否所有usedSpace都被包含在bigFreeSpace中
            if (this.judgeSpaceRelationship(bigFreeSpace, usedSpaceList.get(i)) != 2) {
                System.out.println("不是所有usedSpace都被包含在bigFreeSpace中");
                return false;
            }

            //判断usedSpace之间是否相互重合
            for (int j = 0; j < usedSpaceList.size(); j++) {
                System.out.println("相交类型："+this.judgeSpaceRelationship(usedSpaceList.get(i), usedSpaceList.get(j)));
                if (i != j && (this.judgeSpaceRelationship(usedSpaceList.get(i), usedSpaceList.get(j)) != 0)) {
                    System.out.println("usedSpace之间相互重合");
                    return false;
                }
            }
        }

        return true;
    }

    
    public List<FreeSpace> eliminateSpace(FreeSpace bigSpace, FreeSpace smallSpace) {
        List<FreeSpace> freeSpaceList = new ArrayList<>();

        //获取第一个空间
        if (Math.abs(bigSpace.getX() - smallSpace.getX()) <= offSet) {
            //这个空间已经很小了，抛弃
        } else {
            freeSpaceList.add(new FreeSpace(bigSpace.getX(),
                    bigSpace.getY(),
                    bigSpace.getZ(),
                    smallSpace.getX() - bigSpace.getX(),
                    bigSpace.getWidth(),
                    bigSpace.getHeight()));
        }

        //获取第二个空间
        if (Math.abs(bigSpace.getX() + bigSpace.getLength() - smallSpace.getX() - smallSpace.getLength()) <= offSet) {
            //这个空间已经很小了，抛弃
        } else {
            freeSpaceList.add(new FreeSpace(smallSpace.getX() + smallSpace.getLength(),
                    bigSpace.getY(),
                    bigSpace.getZ(),
                    bigSpace.getX() + bigSpace.getLength() - smallSpace.getX() - smallSpace.getLength(),
                    bigSpace.getWidth(),
                    bigSpace.getHeight()));
        }

        //获取第三个空间
        if (Math.abs(bigSpace.getZ() + bigSpace.getHeight() - smallSpace.getZ() - smallSpace.getHeight()) <= offSet) {
            //这个空间已经很小了，抛弃
        } else {
            freeSpaceList.add(new FreeSpace(smallSpace.getX(),
                    bigSpace.getY(),
                    smallSpace.getZ() + smallSpace.getHeight(),
                    smallSpace.getLength(),
                    bigSpace.getWidth(),
                    bigSpace.getZ() + bigSpace.getHeight() - smallSpace.getZ() - smallSpace.getHeight()));
        }


        //获取第四个空间
        if (Math.abs(bigSpace.getZ() - smallSpace.getZ()) <= offSet) {
            //这个空间已经很小了，抛弃
        } else {
            freeSpaceList.add(new FreeSpace(smallSpace.getX(),
                    bigSpace.getY(),
                    bigSpace.getZ(),
                    smallSpace.getLength(),
                    bigSpace.getWidth(),
                    smallSpace.getZ() - bigSpace.getZ()));
        }

        //获取第五个空间
        if (Math.abs(bigSpace.getY() + bigSpace.getWidth() - smallSpace.getY() - smallSpace.getWidth()) <= offSet) {
            //这个空间已经很小了，抛弃
        } else {
            freeSpaceList.add(new FreeSpace(smallSpace.getX(),
                    smallSpace.getY() + smallSpace.getWidth(),
                    smallSpace.getZ(),
                    smallSpace.getLength(),
                    bigSpace.getY() + bigSpace.getWidth() - smallSpace.getY() - smallSpace.getWidth(),
                    smallSpace.getHeight()));
        }

        //获取第六个空间
        if (Math.abs(smallSpace.getY() - bigSpace.getY()) <= offSet) {
            //这个空间已经很小了，抛弃
        } else {
            freeSpaceList.add(new FreeSpace(smallSpace.getX(),
                    bigSpace.getY(),
                    smallSpace.getZ(),
                    smallSpace.getLength(),
                    smallSpace.getY() - bigSpace.getY(),
                    smallSpace.getHeight()));
        }

        return freeSpaceList;
    }

    
    public int judgeSpaceRelationship(FreeSpace freeSpace1, FreeSpace freeSpace2) {

        //判断freeSpace1是否全包含freeSpace2
        if (freeSpace1.getX() <= freeSpace2.getX() + offSet &&
                freeSpace1.getY() <= freeSpace2.getY() + offSet &&
                freeSpace1.getZ() <= freeSpace2.getZ() + offSet &&
                freeSpace1.getX() + freeSpace1.getLength() + offSet >= freeSpace2.getX() + freeSpace2.getLength() &&
                freeSpace1.getY() + freeSpace1.getWidth() + offSet >= freeSpace2.getY() + freeSpace2.getWidth() &&
                freeSpace1.getZ() + freeSpace1.getHeight() + offSet >= freeSpace2.getZ() + freeSpace2.getHeight()
        ) {
            return 2;
        }
        //判断freeSpace2是否全包含freeSpace1
        if (freeSpace2.getX() <= freeSpace1.getX() - offSet &&
                freeSpace2.getY() <= freeSpace1.getY() - offSet &&
                freeSpace2.getZ() <= freeSpace1.getZ() - offSet &&
                freeSpace2.getX() + freeSpace2.getLength() - offSet >= freeSpace1.getX() + freeSpace1.getLength() &&
                freeSpace2.getY() + freeSpace2.getWidth() - offSet >= freeSpace1.getY() + freeSpace1.getWidth() &&
                freeSpace2.getZ() + freeSpace2.getHeight() - offSet >= freeSpace1.getZ() + freeSpace1.getHeight()
        ) {
            return 3;
        }

        //获取两个空间的中心坐标
        double x1 = freeSpace1.getX() + (freeSpace1.getLength() * 1.0) / 2;
        double y1 = freeSpace1.getY() + (freeSpace1.getWidth() * 1.0) / 2;
        double z1 = freeSpace1.getZ() + (freeSpace1.getHeight() * 1.0) / 2;
        double x2 = freeSpace2.getX() + (freeSpace2.getLength() * 1.0) / 2;
        double y2 = freeSpace2.getY() + (freeSpace2.getWidth() * 1.0) / 2;
        double z2 = freeSpace2.getZ() + (freeSpace2.getHeight() * 1.0) / 2;

        //判断是否相交
        if (Math.abs(x1 - x2) <= (freeSpace1.getLength() + freeSpace2.getLength()) * 1.0 / 2 - offSet
                && Math.abs(y1 - y2) <= (freeSpace1.getWidth() + freeSpace2.getWidth()) * 1.0 / 2 - offSet
                && Math.abs(z1 - z2) <= (freeSpace1.getHeight() + freeSpace2.getHeight()) * 1.0 / 2 - offSet) {
            return 1;
        }

        return 0;
    }

    
    public List<Point> getPointListWithSpace(FreeSpace space) {
        List<Point> pointList = new ArrayList<>();

        //点1
        pointList.add(new Point(space.getX(), space.getY(), space.getZ(), 1));
        //点2
        pointList.add(new Point(space.getX() + space.getLength(), space.getY(), space.getZ(), 2));
        //点3
        pointList.add(new Point(space.getX() + space.getLength(), space.getY() + space.getWidth(), space.getZ(), 3));
        //点4
        pointList.add(new Point(space.getX(), space.getY() + space.getWidth(), space.getZ(), 4));
        //点5
        pointList.add(new Point(space.getX(), space.getY(), space.getZ() + space.getHeight(), 5));
        //点6
        pointList.add(new Point(space.getX() + space.getLength(), space.getY(), space.getZ() + space.getHeight(), 6));
        //点7
        pointList.add(new Point(space.getX() + space.getLength(), space.getY() + space.getWidth(), space.getZ() + space.getHeight(), 7));
        //点8
        pointList.add(new Point(space.getX(), space.getY() + space.getWidth(), space.getZ() + space.getHeight(), 8));

        return pointList;
    }

    
    public boolean isContainedInSpace(FreeSpace space, Point point) {
        if (space.getX() - offSet <= point.getX() && point.getX() - offSet <= space.getX() + space.getLength() &&
                space.getY() - offSet <= point.getY() && point.getY() - offSet <= space.getY() + space.getWidth() &&
                space.getZ() - offSet <= point.getZ() && point.getZ() - offSet <= space.getZ() + space.getHeight()
        ) {
            return true;
        }
        return false;
    }


    
    public List<Point> calculatePointNum(FreeSpace freeSpace1, FreeSpace freeSpace2) {
        List<Point> pointList = new ArrayList<>();

        List<Point> eightPointList = getPointListWithSpace(freeSpace2);
//        System.out.println("八个点集合：");
//        System.out.println(eightPointList.toString());

//        System.out.println("空间：" + freeSpace1.toString());

        for (Point point : eightPointList) {
            if (this.isContainedInSpace(freeSpace1, point) == true) {
                pointList.add(point);
            }
        }

//        System.out.println("找到的点数量" + pointList.size());

        return pointList;
    }

    
    public FreeSpace getSameSpace(FreeSpace freeSpace1, FreeSpace freeSpace2) {
        //freeSpace1包含freeSpace2的角个数
        List<Point> pointList1 = this.calculatePointNum(freeSpace1, freeSpace2);
        int size1 = pointList1.size();
        //freeSpace2包含freeSpace1的角个数
        List<Point> pointList2 = this.calculatePointNum(freeSpace2, freeSpace1);
        int size2 = pointList2.size();

        System.out.println("size1" + size1 + ">>" + "size2" + size2);

        //freeSpace1大于freeSpace2（不是体积意义上的大于）
        if (size1 >= size2) {
            //只有一个角被包含
            if (size1 == 1) {
                return this.getSameSpaceWithOnePoint(freeSpace1, pointList1.get(0));
            } else if (size1 == 2) {
                return this.getSameSpaceWithTwoPoint(freeSpace1, pointList1.get(0), pointList1.get(1));
            } else if (size1 == 4) {
                return this.getSameSpaceWithFourPoint(freeSpace1, pointList1.get(0), pointList1.get(1), pointList1.get(2), pointList1.get(3));
            }
        } else {
            //只有一个角被包含
            if (size2 == 1) {
                return this.getSameSpaceWithOnePoint(freeSpace2, pointList2.get(0));
            } else if (size2 == 2) {
                return this.getSameSpaceWithTwoPoint(freeSpace2, pointList2.get(0), pointList2.get(1));
            } else if (size2 == 4) {
                System.out.println("寻找共同空间");
                return this.getSameSpaceWithFourPoint(freeSpace2, pointList2.get(0), pointList2.get(1), pointList2.get(2), pointList2.get(3));
            }
        }
        return null;
    }

    
    public FreeSpace getSameSpaceWithOnePoint(FreeSpace bigSpace, Point point) {
        List<Point> pointListWithBigSpace = this.getPointListWithSpace(bigSpace);

        //1>七
        if (point.getIndex() == 1) {
            return new FreeSpace(point.getX(),
                    point.getY(),
                    point.getZ(),
                    pointListWithBigSpace.get(6).getX() - point.getX(),
                    pointListWithBigSpace.get(6).getY() - point.getY(),
                    pointListWithBigSpace.get(6).getZ() - point.getZ());
        }

        //2>八
        if (point.getIndex() == 2) {
            return new FreeSpace(pointListWithBigSpace.get(7).getX(),
                    point.getY(),
                    point.getZ(),
                    point.getX() - pointListWithBigSpace.get(7).getX(),
                    pointListWithBigSpace.get(7).getY() - point.getY(),
                    pointListWithBigSpace.get(7).getZ() - point.getZ());
        }

        //3>五
        if (point.getIndex() == 3) {
            return new FreeSpace(pointListWithBigSpace.get(4).getX(),
                    pointListWithBigSpace.get(4).getY(),
                    point.getZ(),
                    point.getX() - pointListWithBigSpace.get(4).getX(),
                    point.getY() - pointListWithBigSpace.get(4).getY(),
                    pointListWithBigSpace.get(4).getZ() - point.getZ());
        }

        //4>六
        if (point.getIndex() == 4) {
            return new FreeSpace(point.getX(),
                    pointListWithBigSpace.get(5).getY(),
                    point.getZ(),
                    pointListWithBigSpace.get(5).getX() - point.getX(),
                    point.getY() - pointListWithBigSpace.get(5).getY(),
                    pointListWithBigSpace.get(5).getZ() - point.getZ());
        }

        //5>三
        if (point.getIndex() == 5) {
            return new FreeSpace(point.getX(),
                    point.getY(),
                    pointListWithBigSpace.get(2).getZ(),
                    pointListWithBigSpace.get(2).getX() - point.getX(),
                    pointListWithBigSpace.get(2).getY() - point.getY(),
                    point.getZ() - pointListWithBigSpace.get(2).getZ());
        }

        //6>四
        if (point.getIndex() == 6) {
            return new FreeSpace(pointListWithBigSpace.get(3).getX(),
                    point.getY(),
                    point.getZ(),
                    point.getX() - pointListWithBigSpace.get(3).getX(),
                    pointListWithBigSpace.get(3).getY() - point.getY(),
                    point.getZ() - pointListWithBigSpace.get(3).getZ());
        }

        //7>一
        if (point.getIndex() == 7) {
            return new FreeSpace(pointListWithBigSpace.get(0).getX(),
                    pointListWithBigSpace.get(0).getY(),
                    pointListWithBigSpace.get(0).getZ(),
                    point.getX() - pointListWithBigSpace.get(0).getX(),
                    point.getY() - pointListWithBigSpace.get(0).getY(),
                    point.getZ() - pointListWithBigSpace.get(0).getZ());
        }

        //8>二
        if (point.getIndex() == 8) {
            return new FreeSpace(pointListWithBigSpace.get(1).getX(),
                    pointListWithBigSpace.get(1).getY(),
                    point.getZ(),
                    point.getX() - pointListWithBigSpace.get(1).getX(),
                    point.getY() - pointListWithBigSpace.get(1).getY(),
                    pointListWithBigSpace.get(1).getZ() - point.getZ());
        }

        return null;
    }

    
    public FreeSpace getSameSpaceWithTwoPoint(FreeSpace bigSpace, Point point1, Point point2) {
        List<Point> pointListWithBigSpace = this.getPointListWithSpace(bigSpace);

        //1、2
        if (point1.getIndex() == 1 && point2.getIndex() == 2) {
            return new FreeSpace(point1.getX(),
                    point1.getY(),
                    point1.getZ(),
                    point2.getX() - point1.getX(),
                    pointListWithBigSpace.get(7).getY() - point1.getY(),
                    pointListWithBigSpace.get(7).getZ() - point1.getZ());
        }

        //3、4
        if (point1.getIndex() == 3 && point2.getIndex() == 4) {
            return new FreeSpace(point2.getX(),
                    pointListWithBigSpace.get(4).getY(),
                    point2.getZ(),
                    point1.getX() - point2.getX(),
                    point2.getY() - pointListWithBigSpace.get(4).getY(),
                    pointListWithBigSpace.get(4).getZ() - point2.getZ());
        }

        //5、6
        if (point1.getIndex() == 5 && point2.getIndex() == 6) {
            return new FreeSpace(point1.getX(),
                    point1.getY(),
                    pointListWithBigSpace.get(3).getZ(),
                    point2.getX() - point1.getX(),
                    pointListWithBigSpace.get(3).getY() - point1.getY(),
                    point1.getZ() - pointListWithBigSpace.get(3).getZ());
        }

        //7、8
        if (point1.getIndex() == 7 && point2.getIndex() == 8) {
            return new FreeSpace(point2.getX(),
                    pointListWithBigSpace.get(0).getY(),
                    pointListWithBigSpace.get(0).getZ(),
                    point1.getX() - point2.getX(),
                    point2.getY() - pointListWithBigSpace.get(0).getY(),
                    point2.getZ() - pointListWithBigSpace.get(0).getZ());
        }

        //1、4
        if (point1.getIndex() == 1 && point2.getIndex() == 4) {
            return new FreeSpace(point1.getX(),
                    point1.getY(),
                    point1.getZ(),
                    pointListWithBigSpace.get(5).getX() - point1.getX(),
                    point2.getY() - point1.getY(),
                    pointListWithBigSpace.get(5).getZ() - point1.getZ());
        }

        //5、8
        if (point1.getIndex() == 5 && point2.getIndex() == 8) {
            return new FreeSpace(point1.getX(),
                    point1.getY(),
                    pointListWithBigSpace.get(1).getZ(),
                    pointListWithBigSpace.get(1).getX() - point1.getX(),
                    point2.getY() - point1.getY(),
                    point1.getZ() - pointListWithBigSpace.get(1).getZ());
        }

        //2、3
        if (point1.getIndex() == 2 && point2.getIndex() == 3) {
            return new FreeSpace(pointListWithBigSpace.get(1).getX(),
                    point1.getY(),
                    point1.getZ(),
                    point1.getX() - pointListWithBigSpace.get(4).getX(),
                    point2.getY() - point1.getY(),
                    pointListWithBigSpace.get(4).getZ() - point1.getZ());
        }

        //6、7
        if (point1.getIndex() == 6 && point2.getIndex() == 7) {
            return new FreeSpace(point1.getX(),
                    pointListWithBigSpace.get(0).getY(),
                    pointListWithBigSpace.get(0).getZ(),
                    point2.getX() - point1.getX(),
                    point2.getY() - pointListWithBigSpace.get(0).getY(),
                    point1.getZ() - pointListWithBigSpace.get(0).getZ());
        }

        //1、5
        if (point1.getIndex() == 1 && point2.getIndex() == 5) {
            return new FreeSpace(point1.getX(),
                    point1.getY(),
                    point1.getZ(),
                    pointListWithBigSpace.get(2).getX() - point1.getX(),
                    pointListWithBigSpace.get(2).getY() - point1.getY(),
                    point2.getZ() - point1.getZ());
        }

        //2、6
        if (point1.getIndex() == 2 && point2.getIndex() == 6) {
            return new FreeSpace(pointListWithBigSpace.get(3).getX(),
                    point1.getY(),
                    point1.getZ(),
                    point1.getX() - pointListWithBigSpace.get(3).getX(),
                    pointListWithBigSpace.get(3).getY() - point1.getY(),
                    point2.getZ() - point1.getZ());
        }

        //4、8
        if (point1.getIndex() == 4 && point2.getIndex() == 8) {
            return new FreeSpace(point1.getX(),
                    pointListWithBigSpace.get(1).getY(),
                    point1.getZ(),
                    pointListWithBigSpace.get(1).getX() - point1.getX(),
                    point1.getY() - pointListWithBigSpace.get(1).getY(),
                    point2.getZ() - point1.getZ());
        }

        //3、7
        if (point1.getIndex() == 3 && point2.getIndex() == 7) {
            return new FreeSpace(pointListWithBigSpace.get(0).getX(),
                    pointListWithBigSpace.get(0).getY(),
                    point1.getZ(),
                    point1.getX() - pointListWithBigSpace.get(0).getX(),
                    point2.getY() - pointListWithBigSpace.get(0).getY(),
                    point2.getZ() - point1.getZ());
        }

        return null;
    }

    
    public FreeSpace getSameSpaceWithFourPoint(FreeSpace bigSpace, Point point1, Point point2, Point point3, Point point4) {
        List<Point> pointListWithBigSpace = this.getPointListWithSpace(bigSpace);

        //1、2、3、4
        if (point1.getIndex() == 1 && point2.getIndex() == 2 && point3.getIndex() == 3 && point4.getIndex() == 4) {
            return new FreeSpace(point1.getX(),
                    point1.getY(),
                    point1.getZ(),
                    point2.getX() - point1.getX(),
                    point4.getY() - point1.getY(),
                    pointListWithBigSpace.get(4).getZ() - point1.getZ());
        }

        //5、6、7、8
        if (point1.getIndex() == 5 && point2.getIndex() == 6 && point3.getIndex() == 7 && point4.getIndex() == 8) {
            return new FreeSpace(point1.getX(),
                    point1.getY(),
                    pointListWithBigSpace.get(3).getZ(),
                    point2.getX() - point1.getX(),
                    point4.getY() - point1.getY(),
                    point1.getZ() - pointListWithBigSpace.get(3).getZ());
        }

        //1、4、5、8
        if (point1.getIndex() == 1 && point2.getIndex() == 4 && point3.getIndex() == 5 && point4.getIndex() == 8) {
            return new FreeSpace(point1.getX(),
                    point1.getY(),
                    point1.getZ(),
                    pointListWithBigSpace.get(1).getX() - point1.getX(),
                    point2.getY() - point1.getY(),
                    point3.getZ() - point1.getZ());
        }

        //2、3、6、7
        if (point1.getIndex() == 2 && point2.getIndex() == 3 && point3.getIndex() == 6 && point4.getIndex() == 7) {
            return new FreeSpace(pointListWithBigSpace.get(0).getX(),
                    point1.getY(),
                    point1.getZ(),
                    point1.getX() - pointListWithBigSpace.get(0).getX(),
                    point2.getY() - point1.getY(),
                    point3.getZ() - point1.getZ());
        }

        //3、4、7、8
        if (point1.getIndex() == 3 && point2.getIndex() == 4 && point3.getIndex() == 7 && point4.getIndex() == 8) {
            return new FreeSpace(point2.getX(),
                    pointListWithBigSpace.get(0).getY(),
                    point2.getZ(),
                    point1.getX() - point2.getX(),
                    point2.getY() - pointListWithBigSpace.get(0).getY(),
                    point4.getZ() - point2.getZ());
        }

        //1、2、5、6
        if (point1.getIndex() == 1 && point2.getIndex() == 2 && point3.getIndex() == 5 && point4.getIndex() == 6) {
            return new FreeSpace(point1.getX(),
                    point1.getY(),
                    point1.getZ(),
                    point2.getX() - point1.getX(),
                    pointListWithBigSpace.get(3).getY() - point1.getY(),
                    point3.getZ() - point1.getZ());
        }


        return null;
    }

    
    public List<FreeSpace>[] splitSpace(FreeSpace freeSpace1, FreeSpace freeSpace2) {
        List<FreeSpace>[] listArry = new List[2];
        System.out.println(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
        System.out.println("freeSpace1" + freeSpace1 + ">>" + "freeSpace2" + freeSpace2);
        FreeSpace sameSpace = this.getSameSpace(freeSpace1, freeSpace2);
        System.out.println("sameSpace" + sameSpace);
        System.out.println("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
        listArry[0] = this.eliminateSpace(freeSpace1, sameSpace);
        listArry[1] = this.eliminateSpace(freeSpace2, sameSpace);
        return listArry;
    }
}

效果演示

测试数据

package com.dam.controller;


import com.dam.algorithm.algorithmPackage.freeSpaceTubePackingAlgorithm.util.GetUsedSpaceUtil;
import com.dam.algorithm.common.entity.FreeSpace;
import com.dam.common.Result;
import io.swagger.annotations.api;
import io.swagger.annotations.ApiOperation;
import org.springframework.WEB.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

@RestController
@RequestMapping("/splitSpace")
@Api(tags = "获取装载方案")
public class SplitSpaceController {

    @GetMapping("/usedSpace")
    @ApiOperation("获取装载方案集合")
    private Result usedSpace() throws Exception {

        //添加已用空间
        List<FreeSpace> usedSpaceList = new ArrayList<>();

        //需要修改大空间
        usedSpaceList.add(new FreeSpace(0, 0, 0, 100, 100, 100));

        this.addUsedSpace(usedSpaceList);

        return Result.ok().data("usedSpaceList", usedSpaceList);
    }


    @GetMapping("/splitSpace")
    @ApiOperation("获取装载方案集合")
    private Result splitSpace() throws Exception {

        System.out.println("开始计算");

        long start = System.currentTimeMillis();
        
        FreeSpace bigFreeSpace = new FreeSpace(0, 0, 0, 100, 100, 100);

        List<FreeSpace> freeSpaceList = new ArrayList<>();
        freeSpaceList.add(bigFreeSpace);

        //添加已用空间
        List<FreeSpace> usedSpaceList = new ArrayList<>();
        this.addUsedSpace(usedSpaceList);

        //计算
        new GetUsedSpaceUtil().getFreeSpaceUtil(bigFreeSpace, freeSpaceList, usedSpaceList);

        long end = System.currentTimeMillis();

        System.out.println("计算时间：" + (end - start) + "ms");

        return Result.ok().data("freeSpaceList", freeSpaceList);
    }

    private void addUsedSpace(List<FreeSpace> usedSpaceList) {
        usedSpaceList.add(new FreeSpace(0, 50, 50, 30, 30, 30));
        usedSpaceList.add(new FreeSpace(0, 80, 80, 10, 20, 15));
        usedSpaceList.add(new FreeSpace(36, 35, 50, 50, 30, 30));
        usedSpaceList.add(new FreeSpace(0, 50, 0, 70, 50, 30));
        usedSpaceList.add(new FreeSpace(0, 0, 0, 90, 20, 20));
    }
}