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April
18, 1999
Gradient Lens Fills
After getting a few requests on how I created the Gradient Lens fills in the Wood Texture tip in the Tips Archive, I decided to recreate the technique below.
Be warned however, that this technique is not suggested for use in high-end print work. It would be more practical to create bevel edges on textured objects like I show below, using photo-editing programs.
Version: 8 and above
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This technique came about because
I wanted to create a bevel effect on a textured surface
like the one shown above. I knew I could accomplish this in a
program such as PhotoShop, but it presented a challenge in FreeHand.
Until Lens fills were introduced.
See the Creating a Wood Grain
Texture in the Tips Archive to learn how to create the above
pattern.
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First I create the texture filled
object. Then I draw a rectangle that covers the right
half of the object. I then Clone this rectangle and
scale it horizontally so it barely covers the rightmost
edge of the shape.
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Now select both rectangles and Blend
them together using as many blend steps you feel is right for
the shape and size. Above I used about 30 steps. Now Ungroup
the Blend, then Group it back together.
This tells FreeHand that it
is no longer a blended object and is instead, just a group
of objects. We did that, because you can't apply Lens fills to
Blends.
Now remove any lines on the
group.
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While the group is still selected,
apply a Lens fill. Use the Darken option and give it about
2%. You should see the gradient effect like shown above.
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How it works: Above is what
the effect would look like if it was 3-Dimensional and you were
looking at it from the side. What you've done is overlapped many
Lens fills that have a 2% Darken amount set. As they overlap each
other, the intensity of the Darken amount increases by
2.
This is why you blended a larger
rectangle with a smaller rectangle to insure that they would overlap.
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Next Clone the group of Lens
fills, and mirror it to cover the left side of the shape.
While this clone is still selected, give it a Lighten Lens
Fill with about a 5% lightening amount like shown above.
Select both gradient fills and hide
them on a new Layer for now.
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Now we want to create the bevel
area to apply those Lens Gradients to. For this particular
shape, I create two circles. One that is the exact size
of the original circle, and the inner circle for the thickness
of the bevel.
Then select both circles and Join
them together so they are a Composite path.
Reveal the two Lens fill gradients
and Cut them.
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Select the Composite path
and Paste Inside the Lens fills. Remove any lines that
may be applied to the path.
There, you have now created a Gradient
fill over a textured pattern. You can set the light source
by double-clicking on the clover bullet to select the Gradient
Lens fills. Then just use the rotate tool to move them around.
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Here's a challenge. It took me about
20 minutes to figure out how to create a Sphere using Lens
fills and various other techniques. See if you can figure it out.
It's pretty challenging to get the shadow to be darker on the
edges and lighter in the middle.
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WARNING
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When exporting these multiple Lens
Fill effects as EPS files, they get enormous. Take screen
captures (zoomed in) and edit them in an image editing program
like PhotoShop for exporting to the web. Also be aware that the
art may take a long time to print or may not print at all
if the illustration is very complex.
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Again heed that warning when creating these
kinds of complex Lens fills. As an example of how taxing these can get,
I copied the sphere shape above and switched to GoLive by accident.
It took over 5 minutes to convert the clipboard contents and I couldn't
cancel out of it.
I'd stick with just using these techniques
for fun learning exercises until the Lens fills are more optimized
for everyday use.
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