One Point Perspective
When an object is drawn with one point perspective in mind, it means the object is drawn from its frontal view. The object’s height and width are parallel to the picture plane. Picture plane refers to the area the object is drawn on. An example of a picture plane is simply a piece of paper The front view that you see has no depth but the sides and either the top or the bottom that is extended into to picture forms an illusion of depth.
|Figure 1: One Point Perspective|
Two Point Perspective
In two-point perspective, the object is drawn at an angle. The two corners of the object as as seen from Figure 2, will lead towards the vanishing points. Unlike one point perspective, the height is parallel to the picture plane and the width will converge towards the horizon, which is also known as the eye level. This perspective is only achievable with the presence of two vanishing points at both ends of the horizon.
|Figure 2: Two Point Perspective|
Three Point Perspective
Similar to a two-point perspective, an object drawn with three-point perspective in mind has an additional vanishing point depending on how the object is viewed. If it viewed from low angle, the additional vanishing point will be at the top. If it is from a high angle, the vanishing point will be at the bottom of the image.
|Figure 3: Three Point Perspective|
List of Illustrations:
Figure 1 One Point Pespective [Still Image] at http://www.technologystudent.com/images/persp4.gif accessed on 2 October 2013
Figure 2 Two Point Pespective [Still Image] at http://www.technologystudent.com/designpro/twopers1.htm accessed on 2 October 2013
Figure 3 Three Point Pespective [Still Image] at http://www.needlepoint.org/Archives/perspective/three-point.jpg accessed on 2 October 2013