HOW TO DRAW A PLANE IN SQUARES IN PARALLEL PERSPECTIVE
If you wish to draw the floor of a room to show tiles with a fixed dimension, see figure nº 16.
First of all, draw the support, horizon and distance lines. Find the vanishing, view and depth points, as previously explained. The support line is transformed into line of measurement of the depth. Divide it into spaces, as desired. Draw a diagonal from the first space to the depth point. At the intersections of this line in diagonal with the lines that go from the marked spaces on the width measurement line to the vanishing point, draw the horizontal lines that will form the squares in perspective.