Face Colours for PLY

[stellarpower]

Hi,

Looking at exporting face (and possibly point) colours for PLY, or perhaps STL. I am exporting things from Blender in GLB and finding every tool out there is dropping the colours/textures when exporting to these formats. Obviously won't be able to have raster pixmaps on faces but I think an average colour or something will be fine for the models I'm working with. I'll try to contribute back depending on how messy it gets.

Any pointers on how I might handle? IMeshAccess::nodeColour() is {1,1,1} on every face when visiting (nice clean code layout and good commenting by the way! Lamentably rare to see), so will dig a bit and see if I can get a handle to the raster form.

Thakns

[HuguesDelorme]

Hello @stellarpower
That would be a great improvement to be made to the PLY exporter!
Actually PLY exporter doesn't support textures, it needs to get them with XCAFDoc_VisMaterialTool
See Mayo::Document::xcaf() and Mayo::XCaf::visMaterialTool()

[stellarpower]

Thanks! So in the end I managed to hack something together with about five different tools; but if I end up looking back at it I'll have a look. From memory I think I was looking at ``, although wasn't sure if it was worth trying to run through the object tree or if there was a simpler way to obtain in effect a pixel value for a given XYZ location, without the lighting etc. that would be applied in the viewer.