Programming with OpenSCAD A Beginner's Guide to Coding 3D-Printable Objects

by Gohde, Justin; Kintel, Marius

• ISBN13: 9781593279547
• ISBN10: 159327954X
• Format: Paperback
• Copyright: 2021-08-26
• Publisher: No Starch Press

Summary

Programming with OpenSCAD is a STEM-focused, learn-to-code book for beginners that introduces core computational thinking concepts through the design of 3D-printable objects. Develop coding skills as you build increasingly complex 3D models and print them into fun games, puzzles, and more.

OpenSCAD is freely available open source software that enables nondesigners to easily create 3D designs using a text-based programming language. It’s a great language for beginners because the instant 3D visualization gives you immediate feedback on the results of your code. This book channels OpenSCAD’s visual benefits and user-friendliness into a STEAM-focused, project-based tutorial that teaches the basics of coding, 3D printing, and computational thinking while you develop your spatial reasoning by creating 3D designs with OpenSCAD.
 
Presuming no prior experience with either programming or 3D design, each chapter builds a scaffolded understanding of core concepts. You’ll start by defining, drawing and displaying geometric primitives with text-based code, then expand your creative toolbox with transformation operations – like rotating, reflecting, scaling, and combining shapes.
 
As the projects become more sophisticated, so will your programming skills; you’ll use loops for replicating objects, if statements for differentiating your designs, and parameterized, self-contained modules to divide longer scripts into separate files. Along the way, you'll learn 3D printing tips so that you can produce physical mementos of your progress and get physical feedback that lets you correct mistakes in real time. In addition, the book provides hands-on and accessible design exercises at the end of each chapter so that you can practice applying new concepts immediately after they are introduced.
 
You’ll learn:

Programming basics like working with variables, loops, conditional statements, and parameterized modules

Transformation operations, such as rotate, reflect, and scale, to create complex shapes

Extrusion techniques for turning 2D shapes into elaborate 3D designs

Computational-thinking concepts, including decomposition, abstraction, and pattern recognition

OpenSCAD’s Boolean, Minkowski and hull operations for combining multiple 3D shapes into one

3D design fundamentals, like navigating the xyz-axis, orthogonal vs. perspective views, and constructive solid geometry

Organizing bigger designs into separate files to make code more readable and collaborative

 
Accessibly written for a wide audience (advanced middle schoolers, high school students, college students, artists, makers and lifelong-learners alike), this is the perfect guide to becoming proficient at programming in general and 3D modeling in particular.

Author Biography

Marius Kintel is the primary author and maintainer of OpenSCAD. He is a software engineer with more than 20 years of professional experience in a wide range of fields. At the beginning of the 3D printing movement, he envisioned the need for an open-source design tool that emphasized cleaner design cycles and that adopted iterative design changes in a way better suited to how software engineers work.

Justin Gohde has been teaching for more than 20 years and serves as Department Head of Computer Science at Trinity School in New York City, where he established an interdisciplinary, project-based CS program and oversees the 3D Design Lab. Gohde has presented on OpenSCAD at several conferences, including CSTA, STEMTeachersNYC, Columbia University Makerspace, NYU Creative Coding Fest, and WECode Harvard. He's also an artist, which gives him a unique perspective on teaching students CS in an interdisciplinary manner.

Table of Contents

Introduction

Chapter 1: Three-Dimensional Drawing with OpenSCAD
Chapter 2: More Ways to Transform Shapes
Chapter 3: 2D Shapes
Chapter 4: Using Loops and Variables
Chapter 5: Modules
Chapter 6: Flow Control with if Statements
Chapter 7: Design and Engineering

Appendix A: OpenSCAD Language Reference
Appendix B: Visual Command Reference