This is a prototype of JavaSketchpad, a World-Wide-Web component of The Geometer's Sketchpad. Copyright ©1990-1997 by Key Curriculum Press, Inc. All rights reserved. Portions of this work are being funded by the National Science Foundation (awards DMI 9561674 & 9623018 ).
This icosahedron is constructed as a stereopair, with the red image designed to be viewed with your left eye and the blue image with your right. (You'll need a pair of red/blue 3-D glasses or goggles to appreciate the effect.) The Picture, Horizon, and Ground points control the perspective projection of the 3-D model, using Cathi Sanders' mechanical drawing techniques (see Perspective Drawing with The Geometer's Sketchpad).
The Right and Left points control the degree of disparity between the projected stereo images. Dragging them far apart simulates the binocular vision of a rhinoceros; dragging them close together the vision of a mouse. When the two points are coincident, the stereopair reduces to a monocular projection.
William F. Finzer, November, 1993, 1997.
Return to the JavaSketchpad Gallery.