java代码实现空间切割
更新时间：2022年01月18日 11:10:40 作者：老丹丘
大家好，本篇文章主要讲的是java代码实现空间切割，感兴趣的同学赶快来看一看吧，对你有帮助的话记得收藏一下
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
到此这篇关于java代码实现空间切割的文章就介绍到这了,更多相关java空间切割内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！
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