Between Ellipsoid and Spindle in Stereo

Computer graphics make it easy to transform one geometric object into another. This well-known process of "morphing" is often used for film effects. Here is an example from geometry: the transformation of an ellipsoid into a double spindle and back.

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By experimenting with geometric morphing, you will often find aesthetically interesting intermediate stages. Using computer graphics it is possible to display such processes realistically even if they are impossible in physical reality.
This Demonstration uses the method of crossed view rays for stereoscopic view. The images are arranged so that the one for the right eye is placed on the left and the one for the left eye is placed on the right side. You must squint so that the right eye looks at the left image and the left eye looks at the right image. To do this, hold your finger at half the distance between your eyes and screen.
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