.skp -> JSON -> .skp

[MartinRinehart]

I want to write a .skp -> JSON Ruby, and then, of course, JSON -> .skp.

Possible? How much of .skp is accessible? What will I be losing?

Second, has anyone explored the various ways of building the .skp? How does adding four edges compare to adding a face, given four corners?

[thomthom]

You want to take all entities apart into JSON values?

What comes to mind is faces with holes need special attention. Arcs, Curves.

Dimensions are a problem - as there is no Ruby access. As well as 3d polylines.

DC's and their attribute dictionary? Or even any attribute dictionary. V-Ray for Sketchup for instance adds it's data in binary format.

Textures - Projected property of textures aren't accessible.

[cjthompson]

you should definitely add the faces by points instead of by edges, because edges are entities, so if you export to a model that doesn't already have those entities, you will get an error.

I haven't worked with JSON at all, so I don't know how much help I can be.

[Jim]

A .skp is binary file. I'm not sure I understand the question. Do you mean you want to export a model's geometry as a JSON string?

[MartinRinehart]

@jim said:

Do you mean you want to export a model's geometry as a JSON string?

Exactly. The model is an object. Each collection is an array of objects. Each object in a collection has a type and an appropriate set of values, and so on.

{ entities:[{type:edge, ends:[{type:point3d, start:[r1,g1,b1], ... }], ... }] }

[tbd]

worked some time ago on a model2xml and it worked pretty well by extending each class with a to_xml so it was quickly implemented.

this can be implemented in the same manner but as thomthom it is not possible to have a 100% dump and then reimport it back to SketchUp and have the same model