Book Image

Practical Autodesk AutoCAD 2021 and AutoCAD LT 2021

By : Yasser Shoukry, Jaiprakash Pandey
Book Image

Practical Autodesk AutoCAD 2021 and AutoCAD LT 2021

By: Yasser Shoukry, Jaiprakash Pandey

Overview of this book

AutoCAD and AutoCAD LT are one of the most versatile software applications for architectural and engineering designs and the most popular computer-aided design (CAD) platform for 2D drafting and 3D modeling. This hands-on guide will take you through everything you need to know to make the most out of this powerful tool, starting from a simple tour of the user interface through to using advanced tools. Starting with basic drawing shapes and functions, you'll get to grips with the fundamentals of CAD designs. You’ll then learn about effective drawing management using layers, dynamic blocks, and groups and discover how to add annotations and plot like professionals. The book delves into 3D modeling and helps you convert your 2D drawings into 3D models and shapes. As you progress, you’ll cover advanced tools and features such as isometric drawings, drawing utilities for managing and recovering complex files, quantity surveying, and multidisciplinary drawing files using xRefs, and you'll learn how to implement them with the help of practical exercises at the end of each chapter. Finally, you’ll get to grips with rendering and visualizing your designs in AutoCAD. By the end of the book, you’ll have developed a solid understanding of CAD principles and be able to work with AutoCAD software confidently to build impressive 2D and 3D drawings.
Table of Contents (17 chapters)

Working with Spline

Splines are mathematical curves called nonuniform rational B-splines (NURBS) that can be used to make organic shapes in AutoCAD. An example of a drawing made with a spline is this top view of a mouse. Making this shape with regular draw tools, such as Circle, Arc, and Line, will be difficult, as shown:

Figure 3.53: A simple top view of a computer mouse made with the spline tool

In AutoCAD, there are two ways of making spline. They are spline fit, which is defined by the fit points, and spline control vertice (CV), which is defined by the CVs or control vertices that act as a frame for the curve.

Spline fit

In the expanded Draw panel in the Home tab, you will find the spline tool, as shown in the following...