CorelDRAW Tutorials: Corel Corporation's flagship graphics suite
featuring CorelDRAW® and PHOTO-PAINT® provides unparalleled value
and flexibility and a huge collection of fonts and clipart. These tutorials
show but a fraction of the possibilities for you to explore and create.
CorelDRAW is one of my most frequently used graphics applications. I
can do things with CorelDRAW that simply can't be done with any other
graphics program.
A PC-based graphic design vector drawing program. Files created in this
program can be accepted and translated by Model Graphics if they are
saved with the “.ai” extender. (see vector image)
CorelDRAW is a vector graphics editor developed and marketed by Corel
Corporation of Ottawa, Canada.
This is a popular drawing program for the Windows market. We don't
support Corel Draw specifically but can usually import its files into
Macromedia FreeHand or Adobe Illustrator if needed. Saving your
drawings as an EPS (Encapsulated Postscript) file with all the type
converted to graphics is another way we can accept this format.
Lesson 1: The Anatomy of a Vector Illustration
Part One
Illustrations created in all major vector drawing programs have a definite
anatomy and share a common pattern. Whether you use Deneba
Canvas™, Adobe® Illustrator®, CorelDRAW or Macromedia®
FreeHand® you will find that this pattern exists even though each
program may define the parts differently. The purpose of this section of
the web site is to take apart a vector drawing so you can see how it is
put together and able to understand it. In the illustration section is a
table of equivalent terminology to better help you translate the terms
from one application to another. This will clarify the subject and make it
,less confusing. You will not be bound to a single application once this
becomes clear to you.
The pattern of vector illustrations is best viewed or represented as a
hierarchy or "tree". The illustration itself would be at the top and its
various parts would descend below it:
An ILLUSTRATION is composed of VECTOR OBJECTS, each having one or
more PATHS which are composed of LINE SEGMENTS, having ANCHOR
POINTS at each end.
ILLUSTRATION: OBJECTS:
Paths:
Line Segments and Anchor Points:
,In the diagram above the OBJECT shown is composed of a single closed
PATH composed of 19 LINE SEGMENTS and 19 ANCHOR POINTS. Notice
the curved line on the bottom. It is composed of 2 separate line
segments even though it appears to be one continuous smooth line.
Lesson 2: The Anatomy of a Vector Illustration
Part Two
Bezier Curves And The Different Kinds Of Anchor Points
Continuing with the anatomy of vector illustrations, let's now take a look
at ANCHOR POINTS (or simply points or nodes...please refer to the table
of equivalent terminology in the illustration section of the web site).
Anchor Points
Anchor points are the basis of all objects in a vector illustration and are
its most fundamental components. Anchor points have only a few basic
properties. However, there are many combinations of these basic
properties that result in several variations of anchor points. This can
appear overly complex at first glance. The pattern outlined here is very
simple and explains all the variations.
, All line segments have anchor points at each end which define their
position and curve attributes. The name for the resulting curves are
called Bezier (pronounced beh-zee-ay) curves. They are named after the
French mathematician, Pierre Bezier, who developed a method for
defining curves mathematically.
All anchor points fall roughly into two categories:
1. Those having CONTROL HANDLES and
2. Those having NO CONTROL HANDLES
Curves are controlled by control handles extending from the points.
These control handles do not print. The direction and magnitude of
curves entering and leaving anchor points are determined by the
direction and length of the control handles.
Each control handle extending from a point controls only the portion of
the curve of the line segment facing the control handle:
Line segments with points having control handles are curved.
Line segments with points having no control handles are straight.