intro to adobe illustrator vector concepts
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Art109MODULE 2:
Adobe Illustrator &the Vector Process
COPYRIGHT BY KAITLIN HANGER, PHD
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 tothe pixelation of rasterized images.
(Bézier curves are also used in animation to control motion.)
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BEZIERS ARE THE ELECTRONIC“FRENCH CURVE” INVENTEDBY ENGINEER PIERRE BEZIER
Paths
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Paths
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.
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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 byC(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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Benefits of vector Rescaleable integrity
“Try on” a variety of styles
Maintain several variations on one theme or object
Paths
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Vary stroke
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Vary fill
Vary effects
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Achieve that unique “vector look” using modified brush strokes
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Maintain PerfectFidelity
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RASTER VECTOR
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THE INTERFACE
TOOLS
THE INTERFACE
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TEAROUT TOOLS
Interface
• PALETTES• (Panels)• (Windows)• Appearance: *stroke,
color & swatches(fill), gradient, paths (layers)
• Command Y
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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
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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Student Practice 5Examples: Draw Objects from Scratch
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