How to tell when a material is not really a material (Image)

[Al Hart]

When you load a raster file into SketchUp as a SketchUp "Image", SketchUp secretly creates a material for it but does not show it in the list of materials you can place on faces.

The material (e.g. Image1) is in the list of "Sketchup.active_model.materials.each", but SketchUp does not show it in the "Materials in Model" window.

Does anyone know how you can determine if a particular material gotten from "Sketchup.active_model.materials.each" is a real material or not?

[thomthom]

hm... that's odd. I wonder if something changed in SU7.1...

I was messing with this earlier, before SU7.1

Sketchup.active_model.materials.length would return the count of all materials and image-materials.

Sketchup.active_model.materials.each would not return image-materials

0.upto(Sketchup.active_model.materials-1) { |i| Sketchup.active_model.materials[i] } would return a full lits of materials and image-materials.

...but maybe I'm not remembering correctly... Will have a look at SU6 tomorrow.

[thomthom]

One possible method:

Iterate Sketchup.definitions and look for Image definitions. Then investigate the material of the face contained in each Image definition.

[Al Hart]

@thomthom said:

Sketchup.active_model.materials.length would return the count of all materials and image-materials.

Sketchup.active_model.materials.each would not return image-materials

That was it. Thanks.

I put "materials.each" in my original post, but we were really using "materials.length: and "materials.at"

@thomthom said:

One possible method:

Iterate Sketchup.definitions and look for Image definitions. Then investigate the material of the face contained in each Image definition.

using materials.each will give us just what we wanted.

Again, thanks thomthom

[thomthom]

This is something that the manual should mention. I'll add it to the list.