Parallel projection

Comparison of several types of graphical projection. The presence of one or more 90° angles is usually a good indication that the perspective is oblique.

An example of the limitations of isometric projection. The height difference between the red and blue balls cannot be determined locally.The Penrose stairs depicts a staircase which seems to ascend (anticlockwise) or descend (clockwise) yet forms a continuous loop.

Parallel projections have lines of projection that are parallel both in reality and in the projection plane.

Parallel projection corresponds to a perspective projection with an infinite focal length (the distance from the image plane to the projection point), or "zoom".

单词	Parallel projection
释义	Parallel projection 英语百科 Parallel projection Parallel projections have lines of projection that are parallel both in reality and in the projection plane. Parallel projection corresponds to a perspective projection with an infinite focal length (the distance from the image plane to the projection point), or "zoom".
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