Intersect with model

lapx · 20 Mar 2008, 18:01

Having a problem with intersect with model. In my example I made a floor slab and hoisted it up to where I'm sure it cut thru the walls and some areas did not intersect properly with the plane. I need the lines to cut into the surface so that I can paint the separations.
The intesection clearly happens but some lines do not separate the planes as it should. Is there a fix for this. Does anyone else have this problem?

lapx · 20 Mar 2008, 19:56

Thanks Modelhead,

I tried the trace over and also intersect w/ model even. No luck. It's a case of su not playing by it's rules

alan wood · 20 Mar 2008, 20:48

Hi Guys
My experience with both the 'intersect with model tool' and 'follow me tool' is that you sometimes need to scale up the model by a factor of 100.

So my suggestion would be
make the model
group it
scale it up by a factor or 100
carry out the intersect with model function
remove all of the unnessary stuff. When you have worked on it until you are happy
form a group of that model, scale it down by a factor of 100
the model is then usable with the rest of your model.

I'll keep an eye of this thread. If that does not work if you are happy posting the model i will see if there are any other problems.

cheers
Alan

lapx · 20 Mar 2008, 22:55

Here is part of the model, I can't easily get the planes to close. Frustrating
I have had this problem with a site plan also. It's starting to really kill my confidence in su.

ok, maybe that's a little to dramatic
Help Please!

floorslab.skp

lapx · 20 Mar 2008, 23:23

If you look at the file, see how some lines are thick. This means that they are not cutting in the surface which is what I want to happen so that I can paint separated areas of the floor.

TIG · 20 Mar 2008, 23:28

Here's the fixed skp. It was badly draw in a couple of places with gaps and complex shapes around windows. SUp will face edges that are co-planar BUT will fail if they are too complex. Draw a few diagonal lines to roughly 'triangulate' the shapes. They'll face and make edges co-planar.

Fix only took a few minutes...

floorslab[1].skp

lapx · 20 Mar 2008, 23:43

Thanks Tig,

I'm still confussed about how this would happen. I raised the floor up 4' to intersect with the su walls created in su and used intersect. I'm basically refering to the interior walls. It should have cut the floor plane with out these problems, no?

So, in order to clean this up you only did diagonal lines? I'll give this a try.

Thanks again

lapx · 22 Mar 2008, 15:46

The floor plan was drawn in autocad and them imported in SU. The walls were then drawn on top of cad with the rectangle tool. I then made a slab/ floor with thickness hoping to intersect with the walls which should facilitate texturing separate floor areas. I'll try and post the model when I figure out how to link a large file. I suprised no one has run in to this problem. The surface does not always clean up-some lines are thick (which means not cutting the plane in su or not intersecting) and some are thin. There is always some trace over that has to be done after intersecting.

BTW I am aware of stray lines and intersect ruby's to check. Even these are no garantees at times to indicate all is well.