While a contour effect is linked to an object, the object itself becomes a control object, and the new shapes created become the “contour group.” Changes made to the properties of the or
Trang 1After a blend has been made, you might need to dismantle it and break the link between the control objects This is easily done, but keep in mind that it can’t be reversed without using the Undo command (CTRL+Z) To dismantle a blend, choose the Pick tool, right-click the blend group portion, and choose Break Blend Group Apart from the pop-up menu The control objects then become separate objects, leaving the blend intermediate objects grouped
To further dismantle the arrangement, select only the blend group by using the Pick tool, and then choose Arrange | Ungroup (CTRL+U)
Copying and Cloning Blends
You can also copy or clone from existing blends Neither command requires that you have the Blend tool selected as you do this, and both operations are done through command menus
To copy a blend, at least one blend must be in view, and at least two objects must be selected To proceed, choose Effects | Copy Effect | Blend From Your cursor then changes
to a targeting cursor—click the blend portion of an existing blend to copy all its properties The selected objects then adopt the blend effect you targeted This command can also be performed using the Blend tool by clicking the Copy Blend Properties button on the
property bar
Cloning a blend effect produces a slightly different result than copying the effect When
an effect is applied by cloning, the master clone effect object controls the new effect Any changes made to the master are applied to the clone However, any changes made to the
clone override the properties of the master; any properties you’ve left alone with the clone
still link to the master clone effect To clone a blend effect, you must have created at least one other blend effect and have this in view A Clone blend group affords limited editing: you can choose from one of the presets on the property bar, or choose Clear Blend
If you select a blend group and then choose Edit | Clone, you might find that you have more control over changes you make in the master blend affecting the clone object This is not the same effect as cloning a blend; however, you can change master objects colors as well as make other edits and see the change in the clone.
To clone a blend, choose Effects | Clone Effect | Blend From Your cursor becomes a targeting cursor used to target the existing blend to clone Be sure to click directly on the blend group portion of the effect
Using the Blend Docker
The Blend docker provides an alternative way to apply blends Like all dockers in CorelDRAW, it’s a handy and persistent interface element, and all the functions you can access on the property bar are located on this detachable palette
Trang 2Choose Effects | Blend or choose Window | Dockers | Blend to put the docker in the
drawing window Blend options in the docker are organized into four docker pages: Steps,
Acceleration, Color, and Miscellaneous Options blends, shown in Figure 21-20 Unlike with
the options on the property bar, the Blend docker lets you choose all your blend options
before applying them; no changes are made to the selected objects in your drawing until you
click the Apply button As with the property bar, the control options available in the Blend
docker change depending on the type of blend, for example, whether the blend is on a path
Tapping into Contour Effects
Contour effects are slightly less complex than the blend effects but nonetheless powerful
Contour effects instantly create perfect outlines of shapes or paths by the dozens or even
hundreds The result is similar to viewing a topographical or contour map, hence the name.
During a contour effect, dynamically linked shapes are concentrically created outside or
inside an object’s path CorelDRAW effectively calculates the shape of each contour step
and applies progressive outline and fill colors based on the original object’s properties and
selected contour options
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FIGURE 21-20 The Blend docker provides an alternative way of applying blends
Acceleration Color
Steps Miscellaneous Options
Start/End object buttons
Apply To Path button
Trang 3While a contour effect is linked to an object, the object itself becomes a control object, and the new shapes created become the “contour group.” Changes made to the properties of the original immediately affect the linked group While the contour group is selected, its properties can be edited at any time—without your having to begin the effect from scratch
Exploring CorelDRAW’s Contour Effects
First, let’s see what contour effects enable you to do One of the more popular uses is to simulate depth
Figure 21-21 shows two illustrations of climate zones in the Urals region of Russia At left, uniform fills (solid colors) occupy the objects; at right, the same objects have contour effects In the contour version, the control objects still use uniform color, but the contour uses different colors for the outermost and innermost objects This is one of the uses of the contour effect As with blends, intermediate objects are generated from the beginning object; however, you don’t have to draw the end—the inner object—it’s part of the contour effect function Because the contour effect uses a large number of steps, you can see a smooth color transition in most of the objects Also note that some of the objects have a small number of intermediate objects, producing banding, which can be useful in your design work Just use a low number of steps when drawing a map of the Steppes
Figure 21-22 shows two versions of the contour effect applied to text At top, a two-step contour runs inside the word “Opera,” creating an engraved look At bottom, 25 contour steps are used outside the word to create a glowing effect; a duplicate of “Opera” with Linear transparency was put on top of the design as an embellishment You do not have to convert text to curves to apply a contour effect
FIGURE 21-21 Contour effects create a smooth color transition
Original filled with solid colors Finished artwork with contour effects
Trang 4Using the Contour Tool and Property Bar
To apply contour effects, you’ll need to use the Contour tool, shown here, in combination
with the property bar You’ll find the tool in the toolbox, with other interactive tools: Blend,
Distort, Drop Shadow, Envelope, Extrude, and Transparency
Ill 21-9
While you’re using the Contour tool, the property bar displays options for customizing
the effect These options include contour presets, contour direction, steps and offset spacing,
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FIGURE 21-22 Achieve two different looks for the text by using different options for the
contour effect
2-step contour effect inside text
25-step contour effect outside text with transparent overlay
Contour tool
Trang 5color rotation, outline and fill color, and buttons for copying and clearing the effect, as shown in Figure 21-23
Let’s dig right into the use of the Contour tool’s features
Applying a Contour Effect
1. Create an object (a polygon or star shape is a great seed shape for contours); apply a fill and (optionally) outline properties If you’d like to go wild with this contour tutorial, try filling the object with a fountain fill—contours produce interesting results with fountain fills
2. Choose the Contour tool Notice that your cursor changes, and the property bar now displays contour options
3. Click the object and drag (click-drag) in the direction you want the contour to be applied Dragging from the center outward creates Outside contours; dragging in the opposite direction creates Inside contours The angle of the drag action has no effect
on the contours themselves—only inward and outward count Notice that as you drag, a silhouette of the final size of the contour effect appears in inverted screen colors
4. Release the mouse button, and your effect is finished and ready for customizing These steps created a contour in its default state Adjusting the effect to suit your needs takes a little more work with the property bar options The contours outside or inside the object can also be controlled using the interactive markers surrounding the effect The next section explains the use of these markers, their purpose, and how to manipulate them
To remove a contour effect, click the contour portion of the effect using either the Contour tool or Pick tool and choose Effects | Clear Contour, or click the Clear Contour button in the property bar.
FIGURE 21-23 Use the property bar to make the fullest use of the Contour tool
Preset Options
To Center Inside Contour
Outside Contour
Contour Steps
Contour Offset
Color Rotation
Outline Color
Fill Color Acceleration
Clear Contour
Contour Direction
Linear Contour Colors
Clockwise Contour Colors
Counterclockwise Contour Colors
Copy Contour Properties
Trang 6Editing Contours Interactively
The easiest way to edit a contour effect is by doing it hands-on, using the Contour tool to
change the interactive markers in combination with adjusting property bar options Use them
to adjust the direction, spacing, and offset values of the effect
The black diamond-shaped marker indicates which object is the control object of the
effect The white rectangle marker indicates the final object in the contour group, and its
position sets the distance between the control object and the last object in the effect A slider
between these two enables you to adjust the spacing between the contour steps interactively,
which, in turn, sets the number of steps by dividing the difference Figure 21-24 identifies
the interactive markers and their purpose
Different types of objects are eligible for contour effects in CorelDRAW You can
apply contours to closed paths, compound paths (such as a doughnut shape), and
grouped objects These object types don’t have to have a fill, but obviously they’d
need an outline width, or you’d be applying a contour to an invisible object Applying
a contour effect to a group applies the effect to the entire group Depending on how
a group is arranged, if objects overlap, the contour will “trace” the silhouette of
the objects as though the two shapes were combined using the Weld operation An
object applied with the contour effect is not eligible for other effects unless it’s first
grouped with its linked contour effect object.
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FIGURE 21-24 These two objects have contours applied in opposite directions
Outside Contour Effect
Object markers Offset slider
Last contour marker
Control object marker Contour group
Inside Contour Effect
Object markers
Last contour marker
Offset slider
Control object marker
Contour group
Trang 7You’ll also notice that the Contour tool cursor changes its appearance as you drag outside, inside, or to the centermost point of your selected object, as shown in Figure 21-25 While held over an object, the cursor will also indicate whether the object is eligible for the contour effect
To quickly edit a contour, double-click the effect portion of an existing contour with the Pick tool.
Choosing Contour Direction
In addition to click-dragging a contour to set its direction, you can also use property bar options, shown here Choosing To Center, Inside Contour, or Outside Contour causes the contours to be applied in the direction relative to the object’s outline path When Inside Contour or Outside Contour is selected, you can set the number of steps and the offset spacing between the steps by entering values in the Contour Steps and Contour Offset boxes in the property bar, and pressingENTER.
Ill 21-10
To separate an applied contour and break the dynamic link to the original object, right-click directly on the effect (objects), and then choose Break Contour Group Apart from the pop-up menu.
FIGURE 21-25 The Contour tool cursor lets you know what’s going on
Object can’t
be contoured. Tool cursor is indefault state.
Tool cursor indicates that Outside contour
is being created.
Tool cursor indicates that Inside contour is being created.
Tool cursor indicates that Center contour is being created.
To Center
Inside Contour
Outside Contour
Trang 8The effect’s contour direction, spacing, and offset values affect one another In the
sections to follow, remember that when you change one parameter’s values, a different
parameter will probably auto-change
Contour Inside
With the exception of the 47 clowns that can get out of a Volkswagen, there’s a real-world
and mathematical limit to how many steps you can create a shape within a shape For contours,
if the offset spacing value you enter in the Contour Offset box (on the property bar) exceeds
the number of steps the distance allows, the Contour Steps value is automatically reduced to
fit Figure 21-26 shows some results of applying Inside contours to different objects; as you
can see, compound paths produce quite elegant contour steps Remember: open paths are not
eligible for Inside contour effects; it can’t be done mathematically, and it can’t be done in
CorelDRAW
Contour Outside
Choosing Outside Contour creates contours around your object, and yes, you can use an
open path, as shown in Figure 21-27, with outside contouring It creates an interesting effect
you can use for designing everything from neon signs to expensive paperclips The Contour
Steps value can be set as high as 999, and the Contour Offset values travel within a range of
0.001 to 300 inches
Contour To Center
The To Center direction creates the contour inside the selected object, but it does so using as
many steps as mathematically possible The number of steps depends on the Contour Offset
value (editing the number of steps is not available)—in any case, your object is filled with a
contour This is a terrific option for illustrating game mazes—with a little editing after
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FIGURE 21-26 These objects have identical Inside contours
Trang 9making a contour of a bicycle or a flower in a pot, you could fill a book with games like you see on children’s menus in restaurants Here, the Contour Offset value is the only parameter that can be changed; the number of steps is calculated automatically Figure 21-28 shows contours applied using the To Center option; as with the Inside Contour option, open paths cannot take a To Center contour
Setting Contour Colors
Controlling the progression of color between your original object and the colors of the contour effect is important to create great illustrations; CorelDRAW is a wonderful drawing
program, but you are the artist! You can set color in several different ways, specify a
FIGURE 21-27 The same objects as shown in Figure 21-26 look a little different when Outside
Contour is chosen as the contour style
Open path
FIGURE 21-28 The To Center option creates contours to the center of an object while the
number of steps is calculated by CorelDRAW
Trang 10nonlinear color rotation, control pen and fill colors, and even set fountain fill colors for
individual contour steps
Color Rotation Options
A default contour creates fill and outline colors in a steady progression between the base
object and the final contour (the End object if contours were blends) However, you can
rotate these colors to create rainbow contours and other special effects To do this, choose
either Clockwise or Counterclockwise Contour Colors, as shown here, which has the effect
of applying fill and outline colors based on color positions located around a color wheel—
red, orange, yellow…you get the idea!
Ill 21-11
Outline Color
The Outline Color option, handsomely screen-captured here, sets the outline color of the last
contour in the effect, meaning the colors change steadily from your original to the last
contour object If your object doesn’t have an outline color applied, this option still displays
black as the default color, but no color will be applied to your contours To set the outline
color, click the Outline Color selector and choose a color
Ill 21-12
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Linear Contour Colors
Clockwise Contour Colors Counterclockwise Contour Colors
Outline Color Fill Color