diff --git a/.idea/compiler.xml b/.idea/compiler.xml new file mode 100644 index 0000000000000000000000000000000000000000..d1120094d9ec720a6c591261358a49402f999e0b --- /dev/null +++ b/.idea/compiler.xml @@ -0,0 +1,13 @@ + + + + + + + + + + + + + \ No newline at end of file diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml new file mode 100644 index 0000000000000000000000000000000000000000..712ab9d985c20018a0c97b93d2148ac1ffe588a5 --- /dev/null +++ b/.idea/jarRepositories.xml @@ -0,0 +1,20 @@ + + + + + + + + + + + \ No newline at end of file diff --git a/.idea/misc.xml b/.idea/misc.xml new file mode 100644 index 0000000000000000000000000000000000000000..789324dc2079f4bbc966288738bb0948de6486e2 --- /dev/null +++ b/.idea/misc.xml @@ -0,0 +1,12 @@ + + + + + + + + \ No newline at end of file diff --git a/.idea/workspace.xml b/.idea/workspace.xml index 0c6b7f84dfde2bd64b22d1c90b432e8ba70231de..7e7a4c319ebf05d3583b335a3aa582c576447211 100644 --- a/.idea/workspace.xml +++ b/.idea/workspace.xml @@ -1,5 +1,8 @@ + + @@ -11,7 +14,14 @@ - + + + + + + + + \ No newline at end of file diff --git a/src/main/java/cn/zust/edu/cn/App.java b/src/main/java/cn/zust/edu/cn/App.java index bf9c122443f372c99495cef0daf5d07e13abdff6..4ef7c4cd245e1e5c68c61803f12cbf9060e510a3 100644 --- a/src/main/java/cn/zust/edu/cn/App.java +++ b/src/main/java/cn/zust/edu/cn/App.java @@ -1,4 +1,9 @@ package cn.zust.edu.cn; + +import cn.zust.edu.cn.shape.Circle; +import cn.zust.edu.cn.shape.Rectangle; +import cn.zust.edu.cn.shape.Triangle; + /** * * @author czg @@ -6,7 +11,19 @@ package cn.zust.edu.cn; */ public class App { public static void main(String[] args) { - System.out.println("hello world!"); + ShapeManger shapeManager=new ShapeManger(); + Rectangle rect=new Rectangle(new Point(10,10),100,200); + Triangle tri=new Triangle(new Point(0,10),new Point(50,50),new Point(150,0)); + Circle cir=new Circle(100,new Point(100,100)); + System.out.println("进行第一次绘制："); + shapeManager.addShape(rect); + shapeManager.addShape(tri); + shapeManager.addShape(cir); + shapeManager.drawShapes(); + System.out.println("-----------------------------------------------------------------------------------------------"); + System.out.println("进行第二次绘制："); + shapeManager.delShape(rect); + shapeManager.drawShapes(); } } diff --git a/src/main/java/cn/zust/edu/cn/IShape.java b/src/main/java/cn/zust/edu/cn/IShape.java new file mode 100644 index 0000000000000000000000000000000000000000..84ba88b38ffbbac7d17e81970f678d4d32a2de16 --- /dev/null +++ b/src/main/java/cn/zust/edu/cn/IShape.java @@ -0,0 +1,7 @@ +package cn.zust.edu.cn; + +public interface IShape { + double perimeter();//周长 + double area();//面积 + void draw();//绘制 +} diff --git a/src/main/java/cn/zust/edu/cn/Point.java b/src/main/java/cn/zust/edu/cn/Point.java index 5661ad0dc525c7f45779a6b9a2d09b9be0a440b6..62049f6d702d47441daa576d6c981b19e1f48902 100644 --- a/src/main/java/cn/zust/edu/cn/Point.java +++ b/src/main/java/cn/zust/edu/cn/Point.java @@ -5,5 +5,22 @@ package cn.zust.edu.cn; * @since 2023/3/7 10:50 */ public class Point { + public int x; + public int y; + //无参构造函数 + public Point() { + } + + //有参构造函数 + public Point(int x, int y) { + this.x = x; + this.y = y; + } + + // 拷贝构造函数 + public Point(Point p) { + this.x = p.x; + this.y = p.y; + } } diff --git a/src/main/java/cn/zust/edu/cn/ShapeManger.java b/src/main/java/cn/zust/edu/cn/ShapeManger.java new file mode 100644 index 0000000000000000000000000000000000000000..24fa9b1147c8cdd9dd75b9907325c3db1348c16a --- /dev/null +++ b/src/main/java/cn/zust/edu/cn/ShapeManger.java @@ -0,0 +1,22 @@ +package cn.zust.edu.cn; + +import java.util.ArrayList; +import java.util.List; + +public class ShapeManger { + private final List shapes ; + public ShapeManger(){ + shapes = new ArrayList<>(); + } + public void addShape(IShape shape){ + shapes.add(shape); + } + public void delShape(IShape shape){ + shapes.remove(shape); + } + public void drawShapes(){ + for (IShape shape:shapes){ + shape.draw(); + } + } +} diff --git a/src/main/java/cn/zust/edu/cn/shape/Circle.java b/src/main/java/cn/zust/edu/cn/shape/Circle.java new file mode 100644 index 0000000000000000000000000000000000000000..878c14066be5a0701f6024ed051cbc79ba7f5bf4 --- /dev/null +++ b/src/main/java/cn/zust/edu/cn/shape/Circle.java @@ -0,0 +1,29 @@ +package cn.zust.edu.cn.shape; + +import cn.zust.edu.cn.IShape; +import cn.zust.edu.cn.Point; + +public class Circle implements IShape { + private Point ptCenter; // 圆心位置 + private int radius;// 半径 + + public Circle(int r, Point Center) { + this.radius = r; + this.ptCenter = Center; + } + + @Override + public double perimeter() { + return 2 * Math.PI * radius; + } + + @Override + public double area() { + return Math.PI * radius * radius; + } + + @Override + public void draw() { + System.out.println("将把圆形的圆心绘制在坐标(" + ptCenter.x + ", " + ptCenter.y + ")，并且它的半径长为 " + radius); + } +} diff --git a/src/main/java/cn/zust/edu/cn/shape/Rectangle.java b/src/main/java/cn/zust/edu/cn/shape/Rectangle.java new file mode 100644 index 0000000000000000000000000000000000000000..a7fc64d0200f3a796fb10395de2d9b814b099fbf --- /dev/null +++ b/src/main/java/cn/zust/edu/cn/shape/Rectangle.java @@ -0,0 +1,38 @@ +package cn.zust.edu.cn.shape; + +import cn.zust.edu.cn.IShape; +import cn.zust.edu.cn.Point; + +/** + * + * @author czg + * @since 2023/3/7 10:50 + */ +public class Rectangle implements IShape { + Point ptTopLeft; + Point ptBottomRight; + int width; + int height; + + public Rectangle() { + } + + public Rectangle(Point ptTopLeft, int width, int height) { + this.ptTopLeft = ptTopLeft; + this.width = width; + this.height = height; + } + + public double perimeter(){ + return 2*(width+height); + } + public double area(){ + return width*height; + } + public void draw(){ + int rightbottom1=ptTopLeft.x+width; + int rightbottom2=ptTopLeft.y-height; + System.out.println("将把矩形的左上角绘制在坐标 (" + ptTopLeft.x + ", " + ptTopLeft.y + ")，其右下角绘制在坐标 ("+rightbottom1+", "+rightbottom2+")，其宽度为 " + width + "，高度为 " + height); + } + +} diff --git a/src/main/java/cn/zust/edu/cn/shape/Triangle.java b/src/main/java/cn/zust/edu/cn/shape/Triangle.java new file mode 100644 index 0000000000000000000000000000000000000000..cb7b8ee8cd83b611c6a8ab5a3438246e23bb7ce2 --- /dev/null +++ b/src/main/java/cn/zust/edu/cn/shape/Triangle.java @@ -0,0 +1,54 @@ +package cn.zust.edu.cn.shape; +import cn.zust.edu.cn.IShape; +import cn.zust.edu.cn.Point; + +public class Triangle implements IShape { + //三角形坐标 + private Point ptA; + private Point ptB; + private Point ptC; + + public Triangle(Point ptA, Point ptB, Point ptC) { + this.ptA = ptA; + this.ptB = ptB; + this.ptC = ptC; + } + + // 只读属性：边长 + public double getEdgeA() { + return distance(ptB, ptC); + } + + public double getEdgeB() { + return distance(ptA, ptC); + } + + public double getEdgeC() { + return distance(ptA, ptB); + } + + // 计算两点间的距离 + private double distance(Point p1, Point p2) { + return Math.sqrt(Math.pow(p2.x - p1.x, 2) + Math.pow(p2.y - p1.y, 2)); + } + @Override + public double perimeter() { + return getEdgeA() + getEdgeB() + getEdgeC(); + + } + + @Override + public double area() { + //利用海伦公式 + double s=perimeter()/2; + return Math.sqrt(s * (s - getEdgeA()) * (s - getEdgeB()) * (s - getEdgeC())); + } + + @Override + public void draw() { + System.out.println("将把三角形的顶点分别绘制在坐标 (" + + ptA.x + ", " + ptA.y + ")、(" + + ptB.x + ", " + ptB.y + ") 和 (" + + ptC.x + ", " + ptC.y + ")"); + } +} diff --git a/target/classes/cn/zust/edu/cn/App.class b/target/classes/cn/zust/edu/cn/App.class new file mode 100644 index 0000000000000000000000000000000000000000..b409be245463150863a68bcd68be3ecb1972c368 Binary files /dev/null and b/target/classes/cn/zust/edu/cn/App.class differ diff --git a/target/classes/cn/zust/edu/cn/IShape.class b/target/classes/cn/zust/edu/cn/IShape.class new file mode 100644 index 0000000000000000000000000000000000000000..2eacc522c098bb3ecf3b6e4098db6d3e398adcb2 Binary files /dev/null and b/target/classes/cn/zust/edu/cn/IShape.class differ diff --git a/target/classes/cn/zust/edu/cn/Point.class b/target/classes/cn/zust/edu/cn/Point.class new file mode 100644 index 0000000000000000000000000000000000000000..00802000ccbf9204afa4dee16e59952bf18db815 Binary files /dev/null and b/target/classes/cn/zust/edu/cn/Point.class differ diff --git a/target/classes/cn/zust/edu/cn/Rectangle.class b/target/classes/cn/zust/edu/cn/Rectangle.class new file mode 100644 index 0000000000000000000000000000000000000000..5835193bbd8eaee2eacda9a0de7f8e79bc0ebc33 Binary files /dev/null and b/target/classes/cn/zust/edu/cn/Rectangle.class differ diff --git a/target/classes/cn/zust/edu/cn/ShapeManger.class b/target/classes/cn/zust/edu/cn/ShapeManger.class new file mode 100644 index 0000000000000000000000000000000000000000..ff58b03fb71341470a020335aef6eef2cc87c7cd Binary files /dev/null and b/target/classes/cn/zust/edu/cn/ShapeManger.class differ diff --git a/target/classes/cn/zust/edu/cn/shape/Circle.class b/target/classes/cn/zust/edu/cn/shape/Circle.class new file mode 100644 index 0000000000000000000000000000000000000000..cee23fd2808294b37967b708f596422581f6ba2c Binary files /dev/null and b/target/classes/cn/zust/edu/cn/shape/Circle.class differ diff --git a/target/classes/cn/zust/edu/cn/shape/Rectangle.class b/target/classes/cn/zust/edu/cn/shape/Rectangle.class new file mode 100644 index 0000000000000000000000000000000000000000..186c501b7117d74d0b0af72257f15065eea0890a Binary files /dev/null and b/target/classes/cn/zust/edu/cn/shape/Rectangle.class differ diff --git a/target/classes/cn/zust/edu/cn/shape/Triangle.class b/target/classes/cn/zust/edu/cn/shape/Triangle.class new file mode 100644 index 0000000000000000000000000000000000000000..94d18548ceb7d3c13520588acfaf5b5ba4dbb0b5 Binary files /dev/null and b/target/classes/cn/zust/edu/cn/shape/Triangle.class differ