MAXWELL plugin Authors?

AdamB

JD, I think you've got to bite the bullet and use the COM interface to get the ISkpMaterial, then extract a ISkpTexture on which you can call WriteToFile().

On a related note, anyone else experience that TextureWriter is stupidly slow for large images? ie a model has a 2000x1000 bmp texture and Texturewriter can take minutes to write it out.

thomthom

I just tried with a small experiment - related to another thread: posted there:
http://forums.sketchucation.com/viewtopic.php?f=180&t=31595&p=279046#p279046


tw = Sketchup.create_texture_writer
model = Sketchup.active_model

model.start_operation('Write Textures', true)

tmp = model.definitions.add('Temp_TextureWriter')
g = tmp.entities.add_group
model.materials.to_a.each_with_index { |m,i|
  next if m.texture.nil?
  g.material = m
  tw.load( g )
  p tw.write( g, "c;/temp/mat_#{i}.png" )
}

model.abort_operation

This writes out the textured material in the model without adding to the undo stack and without touching the model's entities - meaning it also doesn't interfere with the Outliner when creating the temp entities.

thomthom

@adamb said:

JD, I think you've got to bite the bullet and use the COM interface to get the ISkpMaterial, then extract a ISkpTexture on which you can call WriteToFile().

Via C or C++?
Or calling the SU COM via ruby API? (Is that possible?)

@adamb said:

On a related note, anyone else experience that TextureWriter is stupidly slow for large images? ie a model has a 2000x1000 bmp texture and Texturewriter can take minutes to write it out.

Haven't really timed things - but have some times thought that writing images took longer than necessary.

AdamB

It has to use C/C++ to talk to the abortion that is COM

Did a quick test on a Mac and it works fine and doesn't add any Undo transactions.

require "Texwriter.bundle"
a_material.dumptexture("/dodah.jpg")

Texwriter.bundle.zip

thomthom

Was it via the COM interface you managed to get the layer material?

AdamB

@thomthom said:

Was it via the COM interface you managed to get the layer material?

Yep. BTW You can get the Layer color etc but there doesn't exist an actual Material..

And here's a Windows build of it. Same method name etc

Texwriter.so.zip

thomthom

@adamb said:

It has to use C/C++ to talk to the abortion that is COM

I thought COM was a Windows thing...

thomthom

Adam - any chance you could post the source for these Ruby Extensions - as simple examples of interacting with the SketchUp COM interface?

JD Hill

@adamb said:

JD, I think you've got to bite the bullet and use the COM interface to get the ISkpMaterial, then extract a ISkpTexture on which you can call WriteToFile().

On a related note, anyone else experience that TextureWriter is stupidly slow for large images? ie a model has a 2000x1000 bmp texture and Texturewriter can take minutes to write it out.

Ugh. I'd rather not do that. And yes, my recollection is that WriteToFile seemed to be quite slow. But I don't use it; if WriteAllTextures fails, I fall back to using WriteTextureFileFromHandle. Can't say that I specifically compared the performance of that with WriteToFile though.

@thomthom said:

I thought COM was a Windows thing...

Not really, COM is just the definition of a set of contracts which are designed to allow unrelated components to connect to and obtain services from one another; roughly speaking, is_a? and respond_to? for C++.

And thanks for the idea of using a Definition; that's perfect.

thomthom

@jd hill said:

And thanks for the idea of using a Definition; that's perfect.

Mind you - if you don't use abort_operation you'll end up making lots of temp definitions cluttering up the In Model definition list.