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This article explores what many consider the most useful tool of all in
CorelDRAW. PowerClip is the
super-duper cropping tool that enables you to place an object or image inside
another object. This
feature first appeared in DRAW 5, and it has become a favorite of many. Like
Lens and Interactive
Transparency, PowerClip doesn't change an object; it determines how we see an
object.
The "Stuff Inside" Command
While the technical term for the operation is the creation of a "clipping
path," we prefer to think of
PowerClip as simply stuffing one object into another. But to better understand
what PowerClip does,
we'll start by telling you what PowerClip does not do. For starters, PowerClip
does not work like
Trim. While you can achieve similar results with both tools, Trim literally
removes unwanted parts
of an object, while PowerClip only hides them from view. Trim's appetite is
increased from the days
when it could only digest one object at a time, but it still has its limits;
PowerClip, however, can spin
its magic on hundreds of objects at once, if necessary. Finally, do you
remember the Pepsi-Cola
commercial of two years ago? The boy at the beach who draws so hard on the
straw that he sucks
himself entirely into the bottle? That, too, is not how PowerClip works,
because PowerClip
introduces no distortion at all as it stuffs one object into another.
Instead, PowerClip crops one object (or group of objects) to fit within a
shape. Anything that doesn't
fit is ignored. Free-form cropping has long been a feature of painting and
image-editing programs
such as PHOTO-PAINT, but bringing this operation into DRAW was not so easy.
With PAINT, it's
a simple matter to create a "mask" and erase all pixels that fall outside of
the mask. But unlike a paint
program or a manual trim job—both of which delete the portion that is outside
of the desired area—PowerClip maintains the integrity of the original object.
If you decide to undo a PowerClipped object,
just extract the contents—it's as if nothing had ever happened to them. Try
doing that with a paint
program.
PowerClip Basics
Creating a PowerClip is simple: select one or more objects to be clipped, go to
Effects | PowerClip
| Place inside Container, and then click on the container object. The objects
to be clipped can be
literally anything—even an imported bitmap. The container can be anything
created in DRAW, with
the exception of paragraph text. That also rules out bitmaps, but as far as we
can tell, anything else
is eligible, including multipathed objects, groups, text, envelopes,
extrusions, and another PowerClip (you can even use an open shape as the container, but then anything you place
inside it becomes
invisible).
Try this exercise on for size:
- In a new drawing, go to the Symbols docker. From Plants, drag the palm tree
(symbol #33) onto
the page. From Animals1, drag in an elephant (symbol #52). (This assumes you
installed both the
Plants and Animals1 symbol fonts when you installed DRAW. If not, you can
either install the fonts
before continuing, or just select other symbols to use for this exercise.)
- Shade the palm tree dark and the elephant light, and then select and group
them together.
- Draw an ellipse around the group, using the Ctrl key to make it a perfect
circle. Remove the fill
if necessary, and then position and size the circle so parts of both the palm
tree and the elephant are
outside.
Figure 1.
(
Click on the graphic to enlarge.
)

- Reselect the group, and go to Effects | PowerClip | Place inside Container.
- Carefully position the arrow cursor on the outline of the circle. That's how
you tell DRAW that
you want the circle to be the container for the two selected
objects.
- Click on the circle and watch DRAW stuff the tree and the elephant into the
circle. Whatever fits,
you see; what doesn't fit, you don't see.
Figure 2.
(Click on the graphic to enlarge.)
From such a simple set of commands comes such a powerful effect! Notice what
the status bar calls
this new object. The circle used as the container in the exercise above is
hollow, but it could also be
filled. The fill color would act as the background for the clipped objects. Any
type of fill pattern
would work, tempered with reason and constraint, we hope.
Interactive PowerClipping
While using the menus is the most intuitive way to PowerClip, there is an
interactive way you can do
it, too. Try this:
- Select the object you want to clip.
- Click and hold
Button 2 and drag it into the
desired container.
- Release the mouse, and from the pop-up menu, select
PowerClip Inside. DRAW
will automatically clip the object in the container.
Montages with Flair
Thanks to the World Wide Web, it is easier than ever to publish photographs,
and we find ourselves
working with scanned and imported photographs much more often than just two
years ago. Whether
you are publishing to the Web or to paper, your photo layouts can get a real
shot in the arm with PowerClip.
The following graphics show the progression of steps for a photo montage. This
collection of photos,
taken from the Digital Stock library, makes up a theme of dynamic and healthy
living. But, as you can
see, it's not easy positioning them in such a way that their edges are smooth.
They meet in the middle
in ragged and haphazard fashion.
Figure 3. (Click on the graphic to enlarge.)
The first step is to turn to the first cousin of PowerClip, the bitmap cropping
tool. When you invoke
the Shape tool with an imported bitmap image selected, you can crop and shape
the image (you are
essentially node-editing the boundary of the photo). As with PowerClip, you are
not actually trimming
the photo; you are just hiding parts of it from view.
Figure 4. (Click on the graphic to enlarge.)
Now the photos align nicely in the middle. The outside edges are still rough,
but we don't care about
that because the whole thing is getting clipped inside an ellipse. Remember,
anything can be placed
into a PowerClip, including a collection of photos.
Figure 5. (Click on the graphic to enlarge.)
To add the fitted text, we chose the PowerClip itself as the path, and then
raised the lettering up by half an inch.
Lots of Containers
As the montage demonstrates, you can place anything into a container. As for
the container that holds
the clipped objects, the requirements are hardly more stringent: any
vector-based object (i.e., any
object you create with DRAW's tools) can act as the container for a
PowerClip.
What's more, your
container can be a group of objects and this opens up myriad possibilities. The
following three
images stars one of the many cartoon characters available in Corel's library of
clipart.
Figure 6. (Click on the graphic to enlarge.)
We placed a series of squares atop this exasperated man, and once grouped,
those 30 squares can
become a single container for a PowerClip.
Figure 7. (Click on the graphic to enlarge.)
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Before clipping, we introduced a bit more hilarity into the scene by
selectively rotating some of the
squares.
Figure 8. (Click on the graphic to enlarge.)
Editing PowerClips
Your palm tree and elephant group probably wasn't positioned within the
PowerClip exactly as ours
was, but adjusting it is easy.You have lots of ways to modify
PowerClips after
the fact. The simplest
way is to select the PowerClip and then select Effects | PowerClip | Edit
Contents. DRAW shows you
only those objects inside the PowerClip, with a convenient circle showing where
the PowerClip container is, and it allows you to edit them any way you like. When you have
done, reach for the
Effects | PowerClip | Finish Editing This Level command. (It's so named because
DRAW allows you
to nest PowerClips within other PowerClips, and if you were editing a nested
PowerClip, you would
be modifying just that one level.)
When a PowerClip is selected, you can right-click to reach the Edit Contents
and Extract Contents
commands. When finished editing a PowerClip, the context menu offers the Finish
Editing command.
Following are some things to keep in mind as you edit
PowerClips.
Avoid Auto-Centering: We like PowerClip's clean and intuitive
design—with one
exception. In its factory condition, DRAW sets a
default that automatically centers all objects within their containers. Most
DRAW users don't like this,
for two reasons:
- Users rarely want objects exactly centered in the container, so making the
default
no centering would make better sense. It is more typical and more logical to
position the objects first
and then clip them.
- The control for turning centering on and off is out of place. You have to go
to Tools | Options | Workspace | Edit and look for the awkwardly named
Automatically Center New PowerClip Contents check box.
We suggest that you find this check box, uncheck it, and leave it that way. If
you ever do want to
center objects within a container, you can turn it back on for the
moment—or
better yet, just select
both objects and press C and E to center them before you clip.
You can also use the Lock Contents Option, which is also somewhat hidden, but
it is more useful
than the auto-center option. When you create a PowerClip
with this option on
(the default), the
contents are initially locked to the container so that the whole
PowerClip is
treated as a single object.
This means that the contents move, rotate, and scale along with the container.
Most of the time, you will want to keep this lock on, but sometimes you'll need
to change the relative
positions of the container and the clipped objects. You can always do this with
the Edit Contents
command on the PowerClip menu, but that is cumbersome for simple adjustments.
That's when the
time is right to unlock the contents. Right-click and uncheck Lock Contents to
PowerClip. The
container then acts as a movable window, letting you view different parts of
the objects inside. When
you are done repositioning everything, relock the contents to ensure that the
PowerClip again moves
as a unit.
Group while Editing: In the simple exercise earlier, you grouped the palm tree
and elephant before
clipping them. You could have just as easily marquee-selected the two objects
and clipped them
without grouping, but we wanted you to see that grouping simplifies your
PowerClipping tasks. You
can ungroup, regroup, combine, and delete elements, change fills, or do
anything else to the contents
of a PowerClip. When you use PowerClip | Edit Contents, think of the contents
as a separate drawing
that will eventually be cropped by the container outline. Nearly anything you
would normally do to
objects in a drawing can be done at this point. Then, when you select Finish
Editing This Level from
the flyout, the PowerClip is reapplied to the contents. The one thing you
cannot do with the Edit
Contents command is reposition the container itself, but that is easily done
before you create the PowerClip (by simply editing it) or afterward (by unlocking the contents).
Faking 3D with PowerClip
In a two-dimensional drawing program, it is not possible to place an object
through another. Consider
this simple drawing.
Figure 9. (Click on the graphic to enlarge.)
In CorelDRAW's world, the dog can either be in front of the hoop or behind the
hoop; it cannot be
going through the hoop. Yet to any reader's eye, this acrobatic canine is
making this circus catch
while jumping through the hoop held by his master.
PowerClip is responsible for this illusion. To follow along, create an ellipse
and then find a dog or
other animal from Corel's clipart library (we used dogwfris.cdr from
\Clipart\Animals\Pets). Place the
animal in front of the ellipse. Then do this:
- First, go to Tools | Options |
Workspace | Edit and
uncheck Auto-center New PowerClip Contents. This first step is crucial to the
entire operation—you
don't want any auto-centering of your PowerClips to occur.
- Draw a rectangle
over one half of the
dog, making sure that the rectangle is inside of the hoop, as shown
in the figure below.
Figure 10. (Click on the graphic to enlarge.)

- Select the dog and copy it to the Clipboard with Ctrl+C. From this point
forward, make sure not
to move the dog. If you do have to reposition it, then press Ctrl+C again
afterward.
- PowerClip the dog into the rectangle: select the dog, go to Effects |
PowerClip | Place inside Container, and then
click on the rectangle.
Figure 11. (Click on the graphic to enlarge.)

-
Remove the outline of the rectangle, and if there is any fill pattern to it,
remove that too. You want
the rectangle that contains the dog to be completely
invisible.
- Press Ctrl+V to paste a copy of the dog back into the picture.
- Press Shift+PgDn to move the copy to the back. And
voila! You see the figure below.
Figure 12. (Click on the graphic to enlarge.)
Let's recap. You essentially have cut the dog in half, placing one half in
front of the hoop and one half
in back. Because they are exact copies, one goes right atop the other, and the
half that is in front is PowerClipped. So the stacking order is
1. half of dog in front of hoop;
2.
hoop;
3. half of dog behind
hoop.
That is what creates the illusion that he is jumping through.
Better PowerClip Access for Advanced Users
PowerClip is very easy to use, thanks to the intuitive nature of its controls.
However, once you begin
using PowerClip regularly, you will likely grow tired of all of the incessant
clicking. Your mind will
say, "Select this and clip it to that," but your fingers will still have to
say, "Effects...PowerClip...Place
inside Container..."
This is a job for a custom hotkey. Create a hotkey for the Place inside
Container command (Ctrl+1,
for example) and now your fingers can move at the speed of your brain:
- select
object to be clipped;
- press Ctrl+1;
- click on container.
When you learn the commands, you don't
want the
user-friendliness, you want speed. That's where customized hotkeys and icons
will become your best
friends.
This is an excerpt from Rick Altman's upcoming book from SYBEX Inc., Mastering
CorelDRAW
9 (ISBN 0-7821-2520-4), available June 1999. If you would like to be notified
of this book's
availability, click here and send us a blank e-mail. We'll know what you mean.
Copyright 1999, All rights reserved. R. Altman & Associates.
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