Book Image

Autodesk AutoCAD 2013 Practical 3D Drafting and Design

By : JOAO ANTONIO C DOS SANTOS
Book Image

Autodesk AutoCAD 2013 Practical 3D Drafting and Design

By: JOAO ANTONIO C DOS SANTOS

Overview of this book

AutoCAD is a computer-aided design (CAD) and drafting software application. AutoCAD supports both 2D and 3D formats. AutoCAD is used in a range of industries and is utilized by architects, project managers, and engineers, among others."Autodesk AutoCAD 2013 Practical 3D Drafting and Design" will take you beyond the 2D frontier and help you create accurate 3D models that simulate reality. This book is crammed full of creative and practical tutorials which will help you master the third dimension. From exercises on coordinate systems to creating solids and surfaces from 2D, you will wonder how you ever designed without this resource by your side."Autodesk AutoCAD 2013 Practical 3D Drafting and Design" is full of hands-on studies and projects that will help develop your 3D skills. Starting from the assumption of only a very basic knowledge of AutoCAD, this book will help you master 3D visualization and coordinate systems, create 3D models from 2D drawings, and from basic shapes, measure volumes, and other information, obtain 2D construction drawings from 3D models as well as how to apply lights and materials to get photorealistic images.
Table of Contents (20 chapters)
Autodesk AutoCAD 2013 Practical 3D Drafting and Design
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Important variables for solids and surfaces


As in 2D, AutoCAD has also some variables responsible for the creation or visualization of 3D objects:

  • ISOLINES: This variable controls the number of lines used to represent curved faces of solids with the wireframe visual style. These isolines should not be confused with edges. By default, its initial value is 4 and it is saved with the drawing.

  • DISPSILH: This variable controls the display of silhouette edges of solids when applying a wireframe visual style. It is saved with the drawing and accepts two values, 0 (the silhouette is not displayed; this is the default) and 1 (silhouettes are displayed).

  • FACETRES: This variable controls the amount of faceted faces used to represent shaded or rendered objects. All shaded or rendered views are calculated by faceting all curved surfaces and faces. By default, its initial value is 0.5 and it is saved with the drawing. Its value can go from 0.01 to 10; a reasonable value is 2 or 3.

  • DELOBJ: This variable...