well I am trying to erase a character using glutBitmapCharacter. here is my code so far
void draw_ship()
{
glColor3f(0.0f,0.0f,0.0f);
glRasterPos2i(0,0);
glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_24 'F');
glRasterPos2i(0,0);
glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_24, ' ');
}