Negative coordinates

Question

I am building an application.
I use a Map of Holland and want the center of Holland to have the coordinates 0.0 and the upper left corner -x,-y. x and y are variables for the coordinates.
Can plz somebody help me ????

Answer 1

Well, you can write a small method that translate your "Holland" coordinates into java coordinates and vice-versa.
Something like:
private final int X_OFFSET = 500;
private final int Y_OFFSET = 500;
public Point toJavaCoord(Point hollandCoord) {
   Point javaCoord = new Point(hollandCoord);
   javaCoord.translate(-X_OFFSET, -Y_OFFSET);
   return javaCoord;
public Point toHollandCoord(Point javaCoord) {
   Point hollandCoord = new Point(javaCoord);
   hollandCoord.translate(X_OFFSET, Y_OFFSET);
   return hollandCoord;
// and use it like this
Point pHolland  = new Point(0,0);
Point pJava     = this.toJavaCoord(pHolland);
Point pHolland2 = this.toHollandCoord(pJava);