Optics-2022 : Filters : S_WarpChroma
S_WarpChroma
Description
Separates the image into spectral bands and warps them by different amounts. The red is warped by the From transformation, the blue by the To transformation, with the other colors of the spectrum in between.
The S_WarpChroma filter comes from the Emmy award winning Boris FX Sapphire filter set.
Category
Stylize.
Controls
Presets
To select a preset, pick one from the Presets window.
Steps
The number of spectrum samples to include along the path between the From (red) and To (blue) transformations. More steps give a smoother result but require more time to process.
Center
The center of rotation and zooming. The shift values should be zero for this parameter to make sense.
From Z Dist
The distance of the From transformation. This zooms about the Center location when Shift is 0. Increase to zoom out or decrease to zoom in.
From Rotate
The rotation angle of the From transformation, in degrees, about the center.
From Shift X & Y
The horizontal and vertical translations of the From transformation. This can be used for directional motion. If it is non−zero, the center location becomes less meaningful.
To Z Dist
The distance of the To transformation. Increase to zoom out or decrease to zoom in.
To Rotate
The rotation angle of the To transformation, in degrees, about the center. Note that if the From and To Rotate angles are very different, the interpolation between them will become less accurate.
To Shift X & Y
The horizontal and vertical translations of the To transformation. This can be used for directional motion. If it is non−zero, the center location becomes less meaningful.
Warp Amount
Adjusts the overall amount of warping by scaling the From and To transformations. Setting this to zero disables both transforms and leaves the image unchanged.
Brightness
Scales the brightness of the result.
Color1
The color at the From transformation.
Color2
The color midway between the From and To transformations.
Color3
The color at the To transformation.
White Balance
When enabled, the three colors are adjusted internally so they sum to white. In this case, the colors of unwarped regions are not affected and the average color of the result remains the same.
Wrap X & Y
Determines the method for accessing outside the borders of the image.
No
Renders black beyond the borders.
Tile
Repeats a copy of the image.
Reflect
Repeats a mirrored copy. Edges are often less visible with this method.
Filter
If enabled, the image is adaptively filtered when it is resampled. This gives a better quality result when parts of the image are warped smaller.
Crop Input
These 4 parameters, Crop Top, Crop Bottom, Crop Left, and Crop Right, allow selecting a rectangular subsection of the image to be processed. If the Wrap parameters are set to No, the exposed borders will be transparent. If the Wrap is Tile or Reflect, the image is wrapped on the new cropped borders to fill the frame. This can make it easier to avoid artifacts due to distorting an image with bad edges.
Show Center
Enables/disables the on-screen control for adjusting the Center parameter.
Show From Transfm
Enables/disables the on-screen control for adjusting the From Z Dist and From Rotate parameters.
Show To Transform
Enables/disables the on-screen control for adjusting the To Z Dist and To Rotate parameters.
Show From Shift
Enables/disables the on-screen control for adjusting the From Shift parameter.
Show To Shift
Enables/disables the on-screen control for adjusting the To Shift parameter.