- Thu Jan 17, 2013 9:29 pm
In case this is helpful to anyone else, this is jeremy's reply:
While the walls in your model do indeed have the [Color_000] material assigned, the ceiling does not, and you can check this for the group and its faces either using SketchUp's Entity Info dialog, or the plugin's Material Picker tool. And just to clarify terminology a bit, saying "color" or "texture" is very different than saying "material", in both Maxwell and SketchUp, and the distinction is not insignificant. It is a material that you apply to geometry, with color & texture being sub-properties of materials.
It is the plugin's job, at export time, to translate your SketchUp materials into Maxwell materials, and the way this is done is determined by how you have set up the material in the plugin's Scene Manager > Materials tab. There, you can specify either the "Embedded" mode, which is the default mode for a material, and which basically allows us to extend SketchUp's very simplistic conception of a material with additional properties like roughness, bump map, etc, or you can use the "MXM" mode, which simply associates the SketchUp material with an MXM file on your disk. The mode for a given material is set using the "MXM" toggle button found at the top-right of the Scene Manager > Materials page.
Auto-MXM is a different thing altogether; how that works is by matching SketchUp material names with the file names of MXM files found on your disk, at export time -- if such a match is found, the MXM file is substituted in place of the Maxwell material which would otherwise have been generated from the SketchUp material. So as you can see, Auto-MXM is a very specific tool, with a very specific purpose: it is meant to allow one to completely ignore (aside from the need to use very specific material names) Maxwell from inside the plugin, and yet to render in Maxwell using MXM materials. I therefore do not recommend enabling this option unless its function is well understood, and its ramifications well considered, because if not, the results could potentially be surprising. But the main point of mentioning this is that Auto-MXM has nothing to do with the automatic translation of SketchUp materials into Maxwell ones -- that is a function which always takes place whenever necessary, according, as I describe above, to how the material is set up in Scene Manager > Materials.
So to answer your final question more succinctly: to make a 240 material, just change the material's color to 240, either in SketchUp's material editor, or the plugin's. To apply further minor customizations, use Embedded mode and adjust the Character of the material using Scene Manager > Materials; to use a fully custom MXM material, also use Scene Manager > Materials, but switch the material into MXM mode, and link to an MXM file.
I hope this helps to explain things.
Mac Pro early 2008; 8 core 3.2GHz; OS 10.7.5