Setpremodel

Example: Plane Trapped in a Torus

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This example demonstrates the use of various camera-related functions, shape inversion, the premodel primitive and others to create this cool animation of a plane trapped in a torus!

The procedure first sets the turtle model to the built-in plane model, before creating a tag that sets the color of the torus. Then it creates an inverted torus (one whose inside is rendered instead of its outslde) because we’re going to fly inside it!

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One-a-Day: Space Tube Ride using TUBE and TUBEARC

Myrtle creates a 3D space tube ride for her to fly through…

Sometimes Myrtle needs to take a break and have a little fun! One of the things she can do is make a space tube and fly through it, using the TUBE and TUBEARC primitives:

TUBE makes a straight tube, and takes the parameters and . So, tube 20 10 10 makes a tube with a radius of 20 turtle units, a depth of 10 turtle units and 10 sides.

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