Thursday, 28 July 2011

Perspective Projections | OpenGL

Perspective Projections

1. The visual effect of the perspective projection is similar to the human visual system known as perspective foreshortening i.e. the size of perspective projection object varies inversely with the distance of the object from COP.



2. Perspective projection does not preserve parallel lines.


3. Vanishing Point
Any set of parallel lines that are not parallel to projection plan appear to converge to a point called vanishing point.


Perspective Projections

* In this case lines parallel to x and y do not converge, only lines parallel to z do so

One Point Perspective Projections
* One point perspective projection of a cube

Two Points Perspective Projections
* A two point perspective projection of a cube




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