java代码实现空间切割
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、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？
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;
/**
* 给定一批已用的剩余空间和一个大空间，返回最终的剩余空间
*/
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);
}
/**
* 检验数据是否正确
* 1、所有已用空间不能互相重合
* 2、所有已用空间都在最大空间内
*
* @param bigFreeSpace
* @param usedSpaceList
* @return false:数据不合理
*/
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;
}
/**
* 剔除空间
* 给定一个大空间和一个小空间，将小空间从大空间中剔除，最多返回六个剩余空间
*
* @param bigSpace
* @param smallSpace
*/
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;
}
/**
* 判断两个空间是否有交集，有返回1，没有返回0，
* 若freeSpace1全包含freeSpace2，返回2，
* 若freeSpace2全包含freeSpace1，返回3
*
* @param freeSpace1
* @param freeSpace2
* @return
*/
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;
}
/**
* 给定一个剩余空间，返回剩余空间的八个角坐标
*
* @param space
* @return
*/
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;
}
/**
* 给定一个点和一个空间，判断点是否被包含在空间中
*
* @param space
* @param point
* @return
*/
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;
}
/**
* 集合1：freeSpace1包含freeSpace2的角集合
*
* @param freeSpace1
* @param freeSpace2
* @return
*/
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;
}
/**
* 给定两个空间，获取两个空间的共有空间
*
* @param freeSpace1
* @param freeSpace2
* @return
*/
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;
}
/**
* 一个空间只有一个点被另一个空间包含时，找共同空间
*
* @return
*/
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;
}
/**
* 一个空间有两个点被另一个空间包含时，找共同空间
*
* @return
*/
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;
}
/**
* 一个空间有四个点被另一个空间包含时，找共同空间
*
* @return
*/
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;
}
/**
* freeSpace1：已用空间
* freeSpace2：剩余空间
*
* @return 数组
* * 数组元素1：已用空间的分解
* * 数组元素2：返回剩余空间
*/
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));
}
}
结果
大立方体和待切除的小立方体
切除小立方体之后剩余的空间
总结
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