For Raytraced mode it is exactly that vertex color material you need. What would be interesting though is to add some option to our materials to tell them to use the vertex colors as input to their color channels. Logged as RH-66557 Allow Rhino materials to use vertex colors
Not sure what you mean by that. Just add a proper material with which you can control the opacity? Or are you looking more for RH-65601 Display: Vertex colors with alpha
Yes, the vertex color material works when a Grasshopper-Ladybug simulation is baked in Rhino.
The Arctic mode works if to the mesh is applied a a different display mode with “SetObjectDisplayMode”.
If the geometry is not baked, but previewed in Grasshopper, the Arctic and Raytraced modes don´t show mesh colors. It is not crucial now that I know “vertex colors” option. It would be just a bit more flexible if that would work without baking, with the GH preview in Rhino.
Yes, this is it. Here is an older post with a workaround, but it slows down everything or can create a bottleneck for large simulations if used:
The color information of meshes is related to the values assigned. It works well with a Heatmap in Ladybug.
I don´t remember accurately but I have tried it 3-4 months ago with Rhino.Inside to preview the GH, or the baked Rhino mesh into Revit, but it was not showing the colors of the mesh.
I have tried Rhino with Semantic plugin of Proving Ground that can preview Rhino models in Power BI. Their workflows worked when the mesh is exploded to single meshes with values and reassigned in Power BI. Doing it this way creates a huge bottleneck and works only well with a limited amount of meshes.
You should not have to bake the geometry. Using the custom display node should work.
I will test to double-check when back at my keyboard.
edit: tested, and indeed the render mesh does not have its vertex colors when piped through the custom preview component. Logged as RH-66568 Grasshopper Custom Preview component missing vertex colors