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//File CircleCoordinate.java// import java.lang.Math;//@Author : ---dongbkhn--class Point { public double x; public double y; public Point(){ x = 0; y = 0; } public Point(double _x, double _y){ x = _x; y = _y; } public void Display(){ System.out.printf(" %-20.20f %-20.20f",x,y); System.out.println(); } public void copyFrom(Point p){ this.x = p.x; this.y = p.y; }}public class CircleCoordinate { private Point hPoint; private Point lPoint; private double R; private Point[] circlePoint; public CircleCoordinate(){ hPoint = new Point(); lPoint = new Point(); R = 0.0; circlePoint = new Point[10]; } public CircleCoordinate(Point _hPoint, Point _lPoint, double _R){ hPoint = new Point(); lPoint = new Point(); this.hPoint.copyFrom(_hPoint); this.lPoint.copyFrom(_lPoint); R = _R; circlePoint = new Point[10]; for (int i=0;i<10;i++) this.circlePoint[i] = new Point(); this.setCircleCoord(_hPoint, _lPoint, _R); } private void setCircleCoord(Point _hPoint, Point _lPoint, double _R){ //Point 1 circlePoint[0].x = this.lPoint.x + 1.5*R; circlePoint[0].y = this.hPoint.y - R + R*Math.cos(Math.PI/6); //Point 2 circlePoint[1].x = this.lPoint.x + 2*R - R*Math.cos(Math.PI/6); circlePoint[1].y = this.hPoint.y - 0.5*R; //Point 3 circlePoint[2].x = this.lPoint.x + 2*R; circlePoint[2].y = this.lPoint.y; //Point 4 circlePoint[3].x = circlePoint[1].x; circlePoint[3].y = this.hPoint.y - 1.5*R; //Point 5 circlePoint[4].x = circlePoint[0].x; circlePoint[4].y = this.hPoint.y - R - R*Math.cos(Math.PI/6); //Point 6 circlePoint[5].x = this.hPoint.x; circlePoint[5].y = this.hPoint.y - 2*R; //Point 7 circlePoint[6].x = this.lPoint.x + 0.5*R; circlePoint[6].y = this.circlePoint[3].y; //Point 8 circlePoint[7].x = this.lPoint.x + R - R*Math.cos(Math.PI/6); circlePoint[7].y = this.circlePoint[4].y; //Point 9 circlePoint[8].x = this.circlePoint[7].x; circlePoint[8].y = this.circlePoint[1].y; //Point 10 circlePoint[9].x = this.circlePoint[6].x; circlePoint[9].y = this.circlePoint[0].y; } public void Display(){ System.out.println("Toa do 12 diem cua hinh tron la: "); System.out.println("Toa do cao nhat la: "); this.hPoint.Display(); System.out.println("Toa do trai nhat la: "); this.lPoint.Display(); System.out.println(); System.out.println("Toa do con lai: "); for (int i=0;i<10;i++){ System.out.println("Toa do diem "+(i+1)); this.circlePoint[i].Display(); } } public static void main(String[] args){ System.out.println("Begin Main Function======"); Point p1 = new Point(10.0,10.0); Point p2 = new Point(20.0,20.0); CircleCoordinate Circle = new CircleCoordinate(p2,p1,10.0); Circle.Display(); System.out.println("End Main Function ======"); }}
Output:
Begin Main Function======
Toa do 12 diem cua hinh tron la:
Toa do cao nhat la:
20.00000000000000000000 20.00000000000000000000
Toa do trai nhat la:
10.00000000000000000000 10.00000000000000000000
Toa do con lai:
Toa do diem 1
25.00000000000000000000 18.66025403784439000000
Toa do diem 2
21.33974596215561000000 15.00000000000000000000
Toa do diem 3
30.00000000000000000000 10.00000000000000000000
Toa do diem 4
21.33974596215561000000 5.00000000000000000000
Toa do diem 5
25.00000000000000000000 1.33974596215561270000
Toa do diem 6
20.00000000000000000000 0.00000000000000000000
Toa do diem 7
15.00000000000000000000 5.00000000000000000000
Toa do diem 8
11.33974596215561300000 1.33974596215561270000
Toa do diem 9
11.33974596215561300000 15.00000000000000000000
Toa do diem 10
15.00000000000000000000 18.66025403784439000000
End Main Function ======
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