# Intro to Vector Graphics

Overview

Adobe Illustrator is a vector-based program. In this lesson we'll talk about the things that make vector graphics unique. We'll also address some of the things that make Illustrator an industry-leading piece of graphic software.

What are Vector Graphics?

Vector graphics is the use of geometrical primitives such as points, lines, curves, and shapesor polygons, which are all based on mathematical expressions, to represent images in computer graphics.

In vector graphics, Bézier curvesare used to model smooth curvesthat can be scaled indefinitely.

Paths, as they are commonly referred to in image manipulation programs are combinations of linked Bézier curves.

Paths are not bound by the limits of rasterized images and are intuitive to modify.

A Bézier Curve is a representation of a curve through equations expressing the coordinates of the points of the curve as functions of a variable called a parameter

Bézier curves are also used in animation as a tool to control motion.

Bézier curves were widely publicized in 1962 by the French engineer Pierre Bézier, who used them to design automobile bodies at Renault.

Vector Terminology

Bézier curves (paths)

Control points (handles)

Anchor points (points)

Line art

## Line Art

One of the most fundamental elements of art is the line.

Line art or line drawing is any image that consists of distinct straight and curved lines placed against a background, without gradations in shade or hue to represent

two-dimensional or three-dimensional objects.

An important feature of a line is that it indicates the edge of a

two-dimensional shape or a three-dimensional form.

A shape can be indicated by means of an outline and a three-dimensional form can be indicated by contour lines.

Line art can use lines of different colors, although line art is usually monochromatic. Line art emphasizes form and outline, over color, shading, and texture.

Line art is the basis of most printmaking techniques such as engraving, etching, woodcut, lithography and serigraphy (screen printing).

Semester Points

This class operates on a subtraction method in terms of grading.

As such, each student starts off with 100pts, full credit, for all exercises, assignments and classroom performance.

The Overall Semester Grade consists of the following components:

5 Projects: 8pts each / 40pts total

10 Exercises: 3pt each / 30pts total

Participation: 1pt per class / 30pts total

Total 100pts

What is Illustrator

good at?

Constructing crisp, detailed and precise line art

Managing curves in a variety of ways (transform palette, presets, etc.)

Broad toolset for creating vector lines (geometric, freehand, etc.)

Attaching a variety of effects to curves

Generating robust sets of vector curves with minimal effort

Graphical Output

LOGOS

GRAPHS AND CHARTS

EDITORIAL ILLUSTRATIONS

MAPS

INFOGRAPHICS

DISPLAY TYPOGRAPHY

SUPPORT GRAPHICS

MASKS AND OTHER SHAPES FOR PHOTOSHOP

ELEVATIONS

ASSETS FOR THE WEB

VIDEO ASSETS

FILES FOR CNC AND VINYL CUTTERS

Charts and Graphs

Display and custom typography

Editorial Illustrations

Infographics

Logos and icons

Maps

Support Graphics