Lines won't break a face

[mac1]

@ben ritter said:

Thanks everyone for your input. I understand more of what's going on now. Unforturnately, I didn't draw this from scratch, imported CAD files and now trying to make faces where there aren't any. It's been frustrating to say the least.

I will try the tip to scale things up Wo3Dan. I do have the stray lines script and will try that again too.

Thanks mac1. No you didn't destroy my model. No worries.

Thanks to you all. Ben

FYI Ben
I tried TIG's tool flatten http://forums.sketchucation.com/viewtopic.php?t=31895 against your model and it did a very nice job without breaking lines like the drape tool did.

[YoungOSG]

@tig said:

If the face[s] and the rectangle that won't 'cut' are indeed coplanar select them both and "Intersect" them. they will now break... [it works I tried it... ]

if i want use sketchup api to do this,how should i do?
thanks!

[TIG]

@youngosg said:

@tig said:

If the face[s] and the rectangle that won't 'cut' are indeed coplanar select them both and "Intersect" them. they will now break... [it works I tried it... ]

if i want use sketchup api to do this,how should i do?
thanks!
http://www.sketchup.com/intl/en/developer/docs/ourdoc/entities#intersect_with
Read up on it - it is one of the most complicated methods.
You need to get transformations and get/set containers etc...
However, there are many example scripts to crib from...