Intro to vector imagery for using Illustrator

1. Art109
MODULE 2:
Adobe Illustrator &
the Vector Process
COPYRIGHT BY KAITLIN HANGER, PHD

2. TOPICS: Illustrator CS5
Basic mastery of vector images, digital
drawing, & design elements:
ｷ Raster vs. vector art
ｷ Understanding vectors and Bezier curves
ｷ Illustrator features & workspace
ｷ Drawing with the pen tool
ｷ Fills, strokes, brush effects
ｷ Understanding typography

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Bézier curves are
used to model smooth arcs that
can be scaled indefinitely & “losslessly.”
"Paths" link the curves you draw with a
pen tool. Paths are not subject to
the pixelation of rasterized images.
(Bézier curves are also used in
animation to control motion.)
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BEZIERS ARE THE ELECTRONIC
“FRENCH CURVE” INVENTED
BY ENGINEER PIERRE BEZIER

4. Paths
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Paths

6. Paths are created with the pen tool.
The pen tool, a bizarre yet valuable tool,
places anchor points
to define a “path.” Paths define “objects.”
While it takes time to master this tool,
it is worth every minute.
The shapes you end up with in vector are
economical, clean, perfect, and precise.
Pen Tool
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7. WHAT YOU’LL BE GLAD TO HEAR YOU
DON’T HAVE TO LEARN…
“Given a set of n+1 control points P_0, P_1, ...,
Pn, the corresponding Bézier curve is given by
C(t)=sum_(i=0)^nP_iB_(i,n)(t),where B_(i,n)(t)
is a Bernstein polynomial and t iS [0,1].
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8. Benefits
of vector
 Rescaleable integrity
 “Try on” a variety
of styles
 Maintain several
variations on one
theme or object

9. Paths

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Vary stroke
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Vary fill

12. Vary effects
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Achieve that unique “vector look” using
modified brush strokes

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21. Maintain Perfect
Fidelity
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RASTER VECTOR

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THE INTERFACE
TOOLS

33. THE INTERFACE
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TEAROUT TOOLS

34. Interface
• PALETTES
• (Panels)
• (Windows)
• Appearance: *stroke,
color & swatches(fill),
gradient, paths
(layers)
• Command Y
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35. Complete the Two Introductory Practice Exercises
(Due Mar. 9)
Practice Four (P4): Using the pen tool (in either PS or
Illustrator), trace an object in a photo to create a silhouette or
contour drawing (using paths and strokes). Use the fill
function then to make parts of your image different values or
colors. (2 points)
Practice Five (P5): Use the pen, brushes, and shapes to
create a simple object, geometric design, or complex
symmetrical shape “from scratch”. (2 points)
CONTINUE YOUR SELF-PACED TUTORIAL TRAINING.
FOR LEARNING MODULE 2

36. Student Practice 4:
Trace an Object

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Refer to the online
“How-to”
for instructions on
tracing a photo

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60. Student Practice 5
Examples: Draw
Objects from Scratch

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