package nl.tudelft.goal.unreal.util.vecmathcheck;
   
   import java.net.URL;
   
   import javax.vecmath.Matrix3d;
   
   /**
    * Utility class to check if the correct version of Vecmath is loaded. This is
    * needed because OSX installs Java3D as a Java extension. This extension uses
   * version 1.3 of Vecmath.jar. Other projects use version 1.5.* Because java
   * extensions are always loaded before our own libraries we end up with the
   * wrong version loaded.
   * 
   * @author mpkorstanje
   * 
   */
  public class VecmathCheck {
  
  	public static final String minimumVersion = "1.5";
  
  	public static boolean check() {
  		
  		if(getSpecificationVersion() == null){
  			//
  			return true;
  		}
  		
  		return Matrix3d.class.getPackage().isCompatibleWith(minimumVersion);
  	}
  
  	public static String getMinimumVersion() {
  		return minimumVersion;
  	}
  
  	public static String getSpecificationVersion() {
  		return Matrix3d.class.getPackage().getSpecificationVersion();
  	}
  
  	public static URL getPackageDir() {
  		return Matrix3d.class.getProtectionDomain().getCodeSource().getLocation();
  	}
  
  	public static String getErrorMessage() {
  		return "Version " + VecmathCheck.getMinimumVersion() + " of Vecmath.jar is required. "
  				+ "You have version " + VecmathCheck.getSpecificationVersion() + " on your class path at:\n" 
  				+ VecmathCheck.getPackageDir() +".\n"
  				+ "Please remove this version from the class path.";
  	}
  }