「java圆关系」判断两个圆关系java代码
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本文目录一览：
- 1、用java求两个圆关系的代码，，求完整的，正确的源代码，谢谢！！
- 2、java,设计一个类,用于计算圆的面积,周长以及判定一个点与这个圆的位置关系
- 3、java判断两个圆关系（相离，相切，相交）求代码
用java求两个圆关系的代码，，求完整的，正确的源代码，谢谢！！
public class Cycle {
private double x = 0;//圆心横坐标
private double y = 0;//圆心纵坐标
private double r = 0;//圆心半径
public static void main(String[] args) {
String relation = "";
Cycle c = new Cycle(0,0,1);
//相交 外切 内切 相离
Cycle c_xiangJiao = new Cycle(3,4,5);
Cycle c_waiQie = new Cycle(3,4,4);
Cycle c_neiQie = new Cycle(3,4,6);
Cycle c_xiangLi = new Cycle(3,4,2);
relation = c.relationWithOtherCycle(c_xiangJiao);
System.out.println("c c_xiangJiao relationShip ："+relation);
relation = c.relationWithOtherCycle(c_xiangLi);
System.out.println("c c_xiangLi relationShip ："+relation);
relation = c.relationWithOtherCycle(c_neiQie);
System.out.println("c c_neiQie relationShip ："+relation);
relation = c.relationWithOtherCycle(c_waiQie);
System.out.println("c c_waiQie relationShip ："+relation);
}
public Cycle(double x, double y, double r) {
this.r = r;
this.x = x;
this.y = y;
}
public Cycle() {
}
public String relationWithOtherCycle(Cycle c){
String relation = ""; //相交 外切 内切 相离
double length = 0;// (x-x1)*(x-x1)+(y-y1)*(y-y1) 开平方
length = Math.sqrt((this.x-c.getX())*(this.x-c.getX())+(this.y-c.getY())*(this.y-c.getY()));
//System.out.println("length : "+length);
if(length(this.r+c.getR())){
relation = "相离";
}else if (length==(this.r+c.getR())){
relation = "外切";
}else if (length==Math.abs(this.r-c.getR())){
relation = "内切";
}else if (lengthMath.abs(this.r+c.getR())lengthMath.abs(this.r-c.getR())){
relation = "相交";
}
return relation;
}
public double getX() {
return x;
}
public void setX(double x) {
this.x = x;
}
public double getY() {
return y;
}
public void setY(double y) {
this.y = y;
}
public double getR() {
return r;
}
public void setR(double r) {
this.r = r;
}
}
//把测试程序写在Cycle的main方法里了
java,设计一个类,用于计算圆的面积,周长以及判定一个点与这个圆的位置关系
public class Circle{
private float r;//半径
public void setR(float r){this.r = r;}
public float getR(){return this.r;}
public float getS(){//计算面积
return 3.14*r*r;
}
public float getL(){//计算周长
return 2*3.14*r;
}
public int getPlace(float x,float y){//我直接给定某个点的坐标值，你也可以定义一个点Point的对象；
float z = x*x +y*y;
int rs = 0;//默认情况点在圆外
if(r*r z) rs =1;//点在圆内
else if(r*r == z) rs = 2;//点在圆上；
return rs;//这里用整型来代表三种关系
}
}
java判断两个圆关系（相离，相切，相交）求代码
Java程序：
import java.awt.Point;
public class HardWork {
public static void main(String[] args) {
Circle c1 = new Circle(2, new Point(2, 2));
Circle c2 = new Circle(2, new Point(6, 2));
Circle c3 = new Circle(1, new Point(6, 4));
if(c2.isEqual(c3)) {
System.out.println("c2、c3两个圆相同");
}
else {
System.out.println("c2、c3两个圆不相同");
}
if(c1.getRelashionShip(c2) == RelationShip.DISJOINT) {
System.out.println("c1、c2两个圆相离");
}
else if(c1.getRelashionShip(c2) == RelationShip.TANGENCY) {
System.out.println("c1、c2两个圆相切");
}
else {
System.out.println("c1、c2两个圆相交");
}
if(c2.getRelashionShip(c3) == RelationShip.DISJOINT) {
System.out.println("c2、c3两个圆相离");
}
else if(c2.getRelashionShip(c3) == RelationShip.TANGENCY) {
System.out.println("c2、c3两个圆相切");
}
else {
System.out.println("c2、c3两个圆相交");
}
if(c1.getRelashionShip(c3) == RelationShip.DISJOINT) {
System.out.println("c1、c3两个圆相离");
}
else if(c1.getRelashionShip(c3) == RelationShip.TANGENCY) {
System.out.println("c1、c3两个圆相切");
}
else {
System.out.println("c1、c3两个圆相交");
}
}
}
/**
* 圆类
* @author developer
* @version 2016.05.02
*/
class Circle {
/**
* 圆的半径
*/
private double radius;
/**
* 圆心坐标
*/
private Point point;
/**
* 圆周率
*/
public final static double PI = 3.14159;
/**
* 构造方法
*/
public Circle(){
this.radius = 0;
}
/**
* 构造方法
* @param radius 圆的半径
* @param point 圆心坐标
*/
public Circle(double radius, Point point) {
this.radius = radius;
this.point = (Point) point.clone();
}
/**
* 返回圆的面积
* @return 圆的面积
*/
public double getArea() {
return PI * this.radius * this.radius;
}
/**
* 返回圆的周长
* @return 圆的周长
*/
public double getPerimeter() {
return PI * this.radius * 2;
}
/**
* 判断两个圆是否相同，即圆心位置相同并且半径相等
* @param c 另一个圆
* @return 两个圆是否相同，true：相同，false：不相同
*/
public boolean isEqual(Circle c) {
if(this.radius == c.radius this.point.equals(c.point)) {
return true;
}
return false;
}
/**
* 返回两个圆的位置关系，相离、相切或相交
* @param c 另一个圆
* @return 两个圆的位置关系，相离、相切或相交br/
* RelationShip.TANGENCY 相离br/
* RelationShip.DISJOINT 相切br/
* RelationShip.INTERSECT 相交
*/
public RelationShip getRelashionShip(Circle c) {
double distance = 0;
distance = Math.sqrt((c.point.y - this.point.y)*(c.point.y - this.point.y)
+ (c.point.x - this.point.x)*(c.point.x - this.point.x));
if(distance == this.radius + c.radius) {
return RelationShip.TANGENCY;
}
else if(distance this.radius + c.radius) {
return RelationShip.DISJOINT;
}
return RelationShip.INTERSECT;
}
}
/**
* 圆的关系枚举
* @author developer
* @version 2016.05.02
*/
enum RelationShip {
/**
* 相离
*/
DISJOINT,
/**
* 相切
*/
TANGENCY,
/**
* 相交
*/
INTERSECT
};
运行测试：
c2、c3两个圆不相同
c1、c2两个圆相切
c2、c3两个圆相交
c1、c3两个圆相离
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