Three-Point PerspectiveIntroductionThree-point perspective is when no edge of the object is parallel to thepicture plane and all three dimensions (height, width, and depth) requirevanishing points.Three-point perspective is also known as obliqueperspective.You need a more sophisticated sense of perspective tosuccessfully create illustrations in three-point perspective.Three-point orIn three-point or oblique perspective, the object is placed so that none of theobliqueperspectiveprincipal edges is parallel to the picture plane. All three edges requireseparate vanishing points to determine height, width, and depth. The stationpoint is parallel to the picture plane and the cone of visual rays isperpendicular to the picture plane. The decision on the placement of thevanishing points is arbitrary and based purely on aesthetics. Here are twogeneral rules to follow in placing vanishing points in three-point perspective:(1) separate vanishing points to make small objects look better and (2) placevanishing points closer together to emphasize the expanse or large sizeobjects.Figure 5-14 shows an object rendered in three-point perspective.Figure 5-14.—Three-point perspective.5-16