package graphics;

public class Light
{
  public int[] color = {0,0,0}; //black light :-)

  Vector3 direction;

  public Light(double dx, double dy, double dz)
  {
    direction = new Vector3(dx, dy, dz);
    direction.normalize();
  }

  public double[] getDirection()
  {
    double[] dir = new double[3];
    dir[0] = direction.get(0); dir[1] = direction.get(1); dir[2] = direction.get(2);
    return dir;
  }

  public Vector3 getDirectionVector()
  {
    return direction;
  }

  public void setDirection(double dx, double dy, double dz)
  {
    direction.set(0, dx);
    direction.set(1, dy);
    direction.set(2, dz);
  }

  public void setDirection(double[] d)
  {
    for (int i=0; i<3; i++)
      direction.set(i, d[i]);
    direction.normalize();
  }

  public void setDirection(Vector3 dv)
  {
    for (int i=0; i<3; i++)
      direction.set(i, dv.get(i));
  }

  public void setColor(int r, int g, int b)
  {
    color[0] = r;
    color[1] = g;
    color[2] = b;
  }

  //useful if light is grey scale
  public void setColor(int col)
  {
    color[0] = color[1] = color[2] = col;
  }
}