src/contour_tracing.h
bool isNull(){
			if(x == -1 && y == -1){
				return true;
			}
			return false;
		}
// Checks if the point is null based on abouve constructor
Checks if the point is null based on abouve constructor
Checks if the point is null based on abouve constructor
bool isNull(){
			if(x == -1 && y == -1){
				return true;
			}
			return false;
		}
bool isNull ( ) { if ( x == -1 && y == -1 ) { return true ; } return false ; }
Checks if the point is null based on abouve constructor
Checks if the point is null based on abouve constructor