Transfer Functions in xtk

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How would I go about plugging in a transfer function to determine coloring and opacity in xtk based on pixel scalar intensity and / or gradient magnitude. This may be a separable 1d transfer Functions or a 2d transfer function. In addition to VTK, ImageVis3D also supports this.

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There is no built-in support in XTK for that and is most likely not gonna happen.

We recommend using ami.js - there is no built-in support for 2D transfer functions in in ami.js yet but it is under active development and should provide most of required functionalities to support this feature.

Hope that helps -