Central Projection (3-D)

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Central projection - also called vanishing point perspective - takes into account the impression of tapering compared with parallel projection. Object parts which lie in front of the image plane are enlarged, while those lying behind the image plane are reduced. Object parts that lie in the image plane remain undistorted.

The following concepts are important for defining central projection:

(1) Viewpoint (2) Visual ray, (3) Viewer distance, (4) Image plane

 

Horizon

 

(1) Original model, (2) One-point projection (2) Two-point projection (3) Three-point projection

 

The following central projection functions are available:

 

When working in the central projection, not all point options may be available, e.g. the point option (Z) Centre. Therefore, a creation and processing of 3-D models in the central projection is not recommended.

View Functions (3-D)Axonometric and Isometric Projections (3-D)Projection Methods (3-D)

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Version 2302 - HiCAD 3-D
Date: 30/10/2018

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