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Reveal A Drawing


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#1 x21x

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Posted 21 January 2005 - 01:04 PM

Hello everybody,

I have a logo design in the shape of some hooks and curves and want to slowly reveal each curve/hook over 5 seconds. I fisrt tried to do this by animating a mask in a 10 frame interval and setting key frames, but the final result looks inconsistent. I can clearly tell where each keyframe begins and ends. I just want a complete fluid motion from point A to point B. Is there a better way to achive this effect?

Thanks.

#2 Eric Doiron

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Posted 21 January 2005 - 03:34 PM

Hi x21x,

Sorry if I'm asking the obvious but have you set your keyframes to smooth interpolation?

Eric

#3 x21x

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Posted 21 January 2005 - 07:26 PM

Sorry Eric, but I dont think that applies to what Im doing. Here are some screen shots of my layout. The keyframes are of the mask being changed to reveal the picture. Am I doing this right?

The picture is of like a really thing crescent moon.
The mask is moving in a clockwise formation.
Posted Image


Thanks for the replys.

#4 Guest_SirEdric_*

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Posted 22 January 2005 - 02:43 AM

Hi, ex-twentyone-ex.

If you have such a "stroke-like" design,
you might want to try the paint-tool.

Simply re-paint your shapes with one stroke per shape,
(Thick enough to cover the shape, of course...;-)
animate each stroke's write-on
and copy the paint node's alpha to your logo
with a matte-control set to "and" mode.

Might be worth a try and should be less cumbersome
than setting up moving masks...;-)

Have Phun.

Eric.

#5 Guest_SirEdric_*

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Posted 22 January 2005 - 02:51 AM

...Or even more simple...

Connect a Paint-tool to a BG
that has the same size as your logo.

Go to the apply-controls of your Paint,
set it to clone and drag&drop the loader
that contains your logo into the according slot.

View your logo in the view
and re-paint it roughly with the Paint-Tool.

View the Paint and
animate the stroke(s) write-on feature.

Have Phun.

Eric.

#6 Eric Doiron

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Posted 22 January 2005 - 03:19 PM

...or if you don't feel like animating paint strokes...

Drop in a BG set to gradient
Set the gradient type to Angle and X Start to 0.5
Add a Dissolve node set to Gradient Wipe
Plug above gradient into Map input
Voila, a Radial Wipe with Softness Control

You just need to plug in your Logo and BG layers and animate the Foreground/Background slider.

Eric

#7 x21x

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Posted 22 January 2005 - 11:22 PM

Thanks for all the suggestions guys. I think ill try SirEdric first method although Im a little confused with the:

animate each stroke's write-on
and copy the paint node's alpha to your logo
with a matte-control set to "and" mode.


could you elaborate a little on this part?

Thanks,
x21x

#8 Guest_SirEdric_*

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Posted 23 January 2005 - 02:55 AM

Hi, x21x.

Sure thing....;-)

As posted earlier,
it's the easier way to set your Paint-Tool to Clone-mode,
but here we go.....;-)

If you have a blank BG (Black, no Alpha),
add a paint-tool and start drawing a few strokes,
DF will generate an Alpha-Channel along with the strokes.
(As long as you color is set to have Alpha, that is...;-))

I assume that your logo has an Alpha, too.
So if you pipe your Loader into a MatteControl,
connect the Paint to the Mat's Foreground
and set the Mat to "AND"
it will take the BG's Alpha AND the FG-Alpha
and will create an intersection of these.
(In the Mat check "post multiply image")

Resulting in your Logo being visible only where the strokes are.
Combined with animated write-ons of your strokes
you will get a ...well...reveal....;-)

HTH.

Have Phun.

Eric.

#9 x21x

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Posted 24 January 2005 - 12:38 AM

Allright I got it. Thanks for all the help Eric. This works better than what I was doing. :)

Thanks!




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