fork download
copy 
  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6. import static java.lang.Math.*;
  7. class Vector
  8. {
  9. 	double x;
  10. 	double y;
  11.  
  12. 	Vector(double a, double b)
  13. 	{
  14. 		x = a;
  15. 		y = b;
  16. 	}
  17.  
  18. 	 void add(Vector v)
  19.     	{
  20.     		x += v.x;
  21.     		y += v.y;
  22.     	}
  23.  
  24. 	void Rotate(double angle)
  25. 	{
  26. 		double s = sin(angle);
  27. 		double c = cos(angle);
  28.  
  29. 		x = x * c - y * s;
  30. 		y = x * s + y * c;
  31. 	}
  32.  
  33. }
  34.  
  35.  
  36.  
  37.  
  38. class Ideone
  39. {
  40. 	public static void main (String[] args) throws java.lang.Exception
  41. 	{
  42. 		Vector v = new Vector(1,1);
  43. 		v.Rotate(Math.PI / 2);
  44. 		System.out.println(v.x + " " + v.y);
  45. 	}
  46. }
Success #stdin #stdout 0.05s 4386816KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
-0.9999999999999999 -0.9999999999999998
https://ideone.com/ZZjm6l
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!