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Color map with alpha values disables interaction events
See original GitHub issueIn the recent example called slice-plane, the code works as expected.
However, if you set a color map with alpha values, it doesn’t work anymore.
In my case, I created a color map with hundreds of opaque (alpha 1.0) rgb colors and only one transparent (alpha 0.0) color. Then I built a LUT with that color map. Setting this color map disables interaction events, even if pickable(True) is set.
I tried first setting a LUT with slice._mapper.SetLookupTable(lut) and then with vedo’s cmap slice.cmap(color_map, alpha=alpha_map).
Issue Analytics
- State:
- Created 3 years ago
- Comments:7 (3 by maintainers)
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Great fix for VTK 9, thank you! I feared that ForceOpaqueOn would also force black to opaque but it keeps transparency as desired. I suppose we can close this because there’s a way to fix the regression.
I confirm it works with vtk8, py37 and latest vedo (pip install -U git+https://github.com/marcomusy/vedo.git).