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26720e74e9
Updated Transform so it accepts a greyscale input per parameter. For each pixel, the parameter is multiplied by 2*v-1 (v being the value of the input's pixel) which makes it possible to affect the strength of each transform using an input image. New effects such as whirl and color guided offsets are now possible. Added Decompose node (does the opposite of combine). Used another color for inputs/outputs that expect/generate a greyscale image.
42 lines
1.3 KiB
ReStructuredText
42 lines
1.3 KiB
ReStructuredText
Transform node
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~~~~~~~~~~~~~~
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The transform node applies a scale operation, a rotation and a translation to the input image.
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.. image:: images/node_transform.png
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Inputs
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++++++
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The transform node accepts a color image as input.
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It also accepts a greyscale input image for each transform parameter. In that case,
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instead of applying a uniform transform to the input image, the transform parameter
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will, for each pixel, be multiplied by a value from -1 to 1 that depends linearly
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on the corresponding greyscale input image (a black pixel will multiply the parameter
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by -1, a white pixel will not change the parameter, a grey50 pixel will set it to 0).
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Outputs
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+++++++
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The transform node outputs the transformed image.
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The input image is first rotated around its center, then the scale operation is applied and
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finally the translation.
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Using the scale operation to zoom on a detail of the input image is only recommended if the
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input does not rely on resolution dependant nodes.
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Parameters
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++++++++++
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The transform node has the following parameters:
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* *Translate X* and *Translate Y* define the translation.
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* *Rotate* define the rotation expressed in degrees.
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* *Scale X* and *Scale Y* define the scale operations along the X and Y axes.
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* If *Repeat* is checked, zooming out will repeat the image, otherwise it will be clamped.
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