# Chapter 13: Building Shapes with Points, Lines, and Faces

# Table Of Contents

## Chapter 13: Building Shapes with Points, Lines, and Faces

#### Figure 13.1

A set of points at the corners of a square.

#### Using Coordinate Indexes to Build Polylines

#### Figure 13.2

A polyline connecting coordinates to make a ÒZÓ shape.

#### Figure 13.3

Three ploylines building a square and crossed diagonals.

#### Building 3-D Shapes Using Polylines

#### Using Coordinate Indexes to Build Faces

#### Figure 13.5

A face built using four coordinates.

#### Building 3-D Shapes Using Faces

#### Figure 13.6

A box built using six faces.

#### Dealing with Nonplanar Faces

#### Figure 13.7

Splitting a square with one corner lifted: the square with one corner lifted but split differently; top-view diagrams showing how the square is split.

#### Figure 13.8

The concave shape of a person's face, and the face split into multiple convex triangles.

#### Figure 13.9

An edge-on view of two pairs of adjacent faces: two faces with a small crease angle, and two faces with a large crease angle.

### Understanding Coordinate Animation

### The Coordinate Node Syntax

### The CoordinateInterpolator Node Syntax

### The IndexedLineSet Node Syntax

### The IndexedFaceSet Node Syntax

### Experimenting with Point, Line, and Face Sets

#### Building a Shape Using Points, Lines, and Faces

#### Figure 13.10

Points in a point set mark the eight corners of a box.

#### Figure 13.11

Lines in a line set mark the 12 edges of a box.

#### Figure 13.12

Faces in a face set build the six faces of a cube.

#### Figure 13.16

A vaulted ceiling piece used repeatedly to build part of a medieval building.