code: public void equiToNorm(double x , double y , Point3D_F64 norm ) {
  		equiToLatLon(x,y, temp);
  		ConvertCoordinates3D_F64.latlonToUnitVector(temp.lat,temp.lon, norm);
  	}
docs: Converts equirectangular into normalized pointing vector
  
  @param x pixel coordinate in equirectangular image
  @param y pixel coordinate in equirectangular image
  @param norm Normalized pointing vector