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This filter allows you to deform interactively some parts of the image
and, thanks to its Animate option, to create the elements of a fade
in/fade out animation between the original image and the deformed one,
that you can play and use in a Web page.
To use it, first select a deform type then click on the Preview and drag
the mouse pointer.
You can find this filter through
→ → .
The options of this filter are so numerous that they come in two tabs.
The first tab contains general options. The second tab holds animation
options.
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Settings
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The Settings tab allows you to set parameters which will affect
the preview you are working on. So, you can apply different deform
modes to different parts of the preview.
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Preview
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Here, the Preview is your work space: You click on the
Preview and drag mouse pointer. The underlying part of image
will be deformed according to the settings you have chosen.
If your work is not convenient, press the
Reset button.
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Deform Mode
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Move: Allows you to
stretch parts of the image.
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Remove: This remove the distortion
where you drag the mouse pointer, partially or
completely. This allows you to avoid pressing Reset
button, working on the whole image. Be careful when
working on an animation: this option will affect one
frame only.
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Grow: This option inflates the
pointed pattern.
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Shrink: Self explanatory.
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Swirl CCW : Create a vortex counter
clockwise.
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Swirl CW : Create a vortex clockwise.
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Deform Radius
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Defines the radius, in pixels (5-100), of the filter action
circle around the pixel pointed by the mouse.
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Deform Amount
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Sets how much out of shape your image will be put (0.0-1.0).
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Bilinear
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This option smooths the IWarp effect.
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Adaptive Supersample
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This option renders a better image at the cost of increased
calculation.
Max Depth: this value limits the maximum
sampling iterations performed on each pixel.
Threshold: when the value difference
between a pixel and the adjacent ones exceeds this threshold
a new sampling iteration is performed on the pixel.
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Animate
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This tab allows to generate several intermediate images between
the original image and the final deformation of this image. You
can play this animation thanks to the
Playback plug-in.
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Number of Frames
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That's the number of images in your animation (2-100). These
frames are stored as layers attached to your image. Use the
XCF format when saving it.
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Reverse
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This option plays the animation backwards.
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Ping-Pong
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When the animation ends one way, it goes backwards.
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