3D Tutorial (Part 1) - Introduction

1. Introduction

Welcome to the 3D Pen Graphics series!

In this series, we'll learn how to make a 3D wireframe engine. Wireframe is a type of 3D where only edges are drawn.

1-1. Starting with 2D

2D Basics

In 2D, every point has 2 coordinates: x, y

Since your monitor is 2D, it's very easy to display a 2D shape on the screen.
Let's create a simple program to draw a 2D rectangle. Later, we'll modify the program to work in 3D.

2D Rectangle Program (Part 1)

1) Make a custom block called "Render":



Enable "Run w/o screen refresh" so that block runs instantly.

2D Rectangle Program (Part 2)

2) Create these scripts:




Run the program, and you should see a rectangle on your screen!
(More specifically, a square...)

2D Rectangle Program (Part 3)

3) Let's create another custom block called "Go to"