3D model of perspective construction

I have added a 3D SketchUp model of the perspective construction used in the 'How to...' section.  This is not in order to demonstrate an alternative method of setting up a perspective drawing, but to help explain more clearly the geometry that underlies any perspective view, whether constructed in the traditional way or via a 3D CAD model.







(images © copyright Russell Light)

Clearly, a CAD model has many advantages in that it can be used as a basis for a whole series of drawings and different perspective views. However, it is still useful to develop an understanding of the basic principles of perspective by constructing a drawing manually, as this can help with composition and selecting a view, as well as being useful for sketches in the field or when a computer isn't to hand.

The SketchUp model can be downloaded from the Google 3D Warehouse.

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