Cutbox.rb

[WEB]

Here is cutbox.rb, an example from Automatic SketchUp:

Create the box

ent = Sketchup.active_model.entities
main_face = ent.add_face [0,0,0], [6,0,0], [6,8,0], [0,8,0]
main_face.reverse!
main_face.pushpull 5

Draw a line across the upper-right corner

cut = ent.add_line [6,6,5], [4,8,5]

Remove the new face

cut.faces[1].pushpull -5

Seems like it should work, but it crashes SketchUp every time. Remove the minus sign, and it acts as expected, but reverse the face and it crashes.

Is it a bug, or is there something wrong with the code?

SketchUp 8.0.15158; Windows 7, 64-bit

[sdmitch]

I tried your code several times with 5 and -5 and it never failed.

[WEB]

Hmmmm. So, something wrong with this SketchUp installation, not with the script. Strange days indeed.

Thanks for checking it.

[WEB]

Ah, ha!

If the file is located in the plugins folder, it executes immediately upon startup, and SketchUp crashes. If it is located elsewhere and loaded via the Ruby Console, it works as expected. Good to know.

[TIG]

You shouldn't have a script auto-loading/executing "raw code".
It is unlikely to do what you expect as it runs before everything is loaded/settled...

Wrap the code inside a method, wrap that inside a module or a module/class...
Then you can 'run' that from the Console to test, or from a menu item, toolbar etc when it's more refined...

[WEB]

If I ever do anything meant to be useful, but this is an example from the book and is intended to be run in the raw.

Back in the day, Cadence and Cadalyst had columns in each issue wherein the author presented a small-but-useful AutoLisp routine with explanations of what and why. A lot of people got the hang of AutoLisp from those columns. I don't suppose there is something similar for Ruby?