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Truncated Icosahedron

SCScratch-Minion•Created May 15, 2018
Truncated Icosahedron
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Instructions

A Truncated Icosahedron has 32 faces (12 pentagonal and 20 hexagonal) and 60 vertices. It is an Archimedean Solid and it looks good. Soccer balls are often patterned like this. (Wikipedia) <Right Arrow> & <Left Arrow> keys to rotate about the Y axis. <Up Arrow> & <Down Arrow> keys to rotate about the X axis. <a> and <z> keys to rotate about the Z axis. Try key combinations to rotate about several axes simultaneously. Turbo Mode may increase the Frames Per Second (FPS) See notes about lag below. An Archimedean solid is a convex polyhedron with faces being two or more different regular polygons meeting identically at all vertices but excluding prisms and antiprisms.

Description

3D Tutorial Studio: https://scratch.mit.edu/studios/5040029/ https://en.wikipedia.org/wiki/Truncated_icosahedron Coordinates for Truncated Icosahedron from http://dmccooey.com/polyhedra/index.html Notes about Lag and Program Efficiency ------------------------------------------------------ This project shows Frames Per Second (FPS) as I had lag problems in the Windows 10 Edge Browser. There was no lag problem using the Chrome or Firefox browsers but I only discovered that later. * To speed up programs, look for major speed gains first! The two major changes I made to speed up the project were: - only draw the front faces of the polyhedron! (previously I drew all faces - the back faces first then the front faces over the top) - When filling the triangle faces, use a rougher drawing resolution of 5 compared with resolution 1 that I used before. The face outlines are drawn over the rough edges! Huge thanks to @TheLogFather for his "Faster Triangle Filler" https://scratch.mit.edu/projects/24828481/ Theory to rotate a 3D object from Wikipedia https://en.wikipedia.org/wiki/Rotation_matrix

Project Details

Project ID223048965
CreatedMay 15, 2018
Last ModifiedMay 16, 2018
SharedMay 16, 2018
Visibilityvisible
CommentsAllowed