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Create Outline/Polyline from DXF

Printed From: CAD Forum
Category: EN
Forum Name: AutoCAD
Forum Description: Discussion about AutoCAD and AutoCAD LT, viewers, DWG and DWF formats, Design Review, AutoCAD 360, add-ons
URL: https://www.cadforum.cz/forum_en/forum_posts.asp?TID=13030
Printed Date: 18.May.2026 at 09:11


Topic: Create Outline/Polyline from DXF
Posted By: VRobbesom
Subject: Create Outline/Polyline from DXF
Date Posted: 17.Dec.2018 at 10:39
Hello there,

I'm a newbie at Autocad.. just had a beginner course
I do work with 3DSMAX a lot so the concepts are clear to me.

I have to create an Outline of multiple views of a ship while keeping it's measurements intact.
I looked in the help and youtube regarding polylines and trief to reproduce this meathod.

I have the shipmodel dxf at layer 0, 
I draw a rectangle around it
I choose 'boundary' from the draw menu and select 'pick points' to click between the ship and the rectangle.

I believe it creates a copy of the rectangle but does not create an outline of the ship..

What am I doing wrong??

Thank you for your time!


Replies:
Posted By: philippe JOSEPH
Date Posted: 17.Dec.2018 at 10:52
Hello VRobbesom, try the BPOLY command.
I suppose BPOLY means Boundary POLYline.

Posted By: philippe JOSEPH
Date Posted: 17.Dec.2018 at 11:05
I have just tried the 2 commands and they work and work the same.
Launch the command, execute it and press F2 on your keyboard to read eventual messages from AutoCAD.
You could upload your file here or an extract of it for us to take a look at it.

Posted By: VRobbesom
Date Posted: 17.Dec.2018 at 14:27
Thanks 4 the replies.. 

First thing I did was ungrouping the model and collapsing it in 3dsmax and then exporting it as dwg, dxf and fbx but sofar to no avail.
I must say my not-so-bad system is still giving me a bad time waiting since the model is quite detailed.
I'll be back after a few more tries..

I guess that the rectangle is not at the smae level as the model.. or the 3d model is not compressed to a 2D shape i.o. to have the boundaries being recognized..

Posted By: philippe JOSEPH
Date Posted: 17.Dec.2018 at 17:32
OK so comming from a 3D software your DWG was not or not entirely at Z:0.
There are possibilities to place everything at Z:0 with FLATTEN or :
MOVE all from the point 0,0 to the point 0,0,1E99 then MOVE all from the point 0,0,1E99 to the point 0,0,0.
If you do this you will have to check the result ( do it on a copy of your file for safety ) in a 2D point of view and in a 3D point of view : Front , Back , Left or Right.
Tell us about your tests.
PS If your object is a real 3D solid then use the command FLATSHOT.


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