Exploring 3D Mesh and Surface Modeling - Mastering AutoCAD for Mac - page 651

Chapter 23

Exploring 3D Mesh
and Surface Modeling

AutoCAD has always offered tools that allowed users to construct fairly complex 3D models.
With the solid-modeling tools, you can even model some very organic forms. But there are some
types of forms that require a type of modeling known as mesh modeling . Mesh modeling enables
you to create smooth, curved volumes by manipulating faces that make up an object's surface.
With mesh modeling, you can quickly create curved shapes that are difficult or even impos-
sible to create by other means. AutoCAD also offers the ability to convert a mesh model into a
3D solid so that you can perform Boolean operations.
AutoCAD for Mac introduces a set of 3D surface modeling tools that extend its ability to
produce and edit curved, organic forms. In this chapter, you'll get a chance to explore many of
the current features of mesh modeling through a series of exercises, and you'll be introduced to
the new surface modeling tools. You'll also learn how you can convert a mesh or 3D surface into
a solid. You'll start by creating a simple shape as an introduction, and then you'll move on to a
more complex form.
In this chapter you'll learn to do the following:

•u

Create a simple 3D mesh

Edit faces and edges •u

Create complex meshes •u

Convert meshes to solids •u

•u

Understand 3D surfaces

Edit 3D surfaces •u

Creating a Simple 3D Mesh
As an introduction to the mesh modeling features in AutoCAD, you'll draw a simple box and
then smooth the box. This first exercise will show you some of the basic mesh modeling tools
and what types of control you can exert on a model. Follow these steps:

1. Create a new file using the acad3D.dwt or acadiso3D.dwt template. Choose File  New
from the menu bar, or press F-N.

2. At the Select Template dialog box, select the acad3D.dwt template (metric users can select
acadiso3D.dwt) and then click Open.