How to use Emacs-SCAD in org-babel mode?

[philipsd6]

I can't figure out why the Org Babel method isn't working for me. I've got an org document containing:

* Testing SCAD
#+name: cube
#+begin_src scad :results file :file-ext scad
cube([8,8,8]);
#+end_src

If I execute that block with C-c C-c I see Code block evaluation complete. in the minibuffer and I get:

#+RESULTS: cube
[[file:cube.scad]]

But the cube.scad buffer is empty. If I tangle the whole file with C-c C-v C-t I see Tangled 0 code blocks from testing.org.

Additionally, since a Scad code block requires :file header argument it's unclear how I can iteratively build up a SCAD file. I'm used to doing literate coding with org-babel, where I expect to have commentary about what I'm doing as I create each part going into the design. Each block would either overwrite the file or be a separate file, right?

[minad]

Hi, the README contains the following example:

#+begin_src scad :file example.png :colorscheme Tomorrow :size 200,200
  for (y=[0:2:20]) {
      translate([0,0,y+1])
          cube([30-2*y,30-2*y,2], true);
  }
#+end_src

When evaluating this block it will render the model and display the png. Right now the support is only basic.

If I tangle the whole file with C-c C-v C-t I see Tangled 0 code blocks from testing.org.

I am not really familiar with tangling, so I am not sure about the expected result.

Additionally, since a Scad code block requires :file header argument it's unclear how I can iteratively build up a SCAD file.

Afaik this is currently not supported. But patches adding such an iterative block feature are welcome.