Go Back   AC3D Forums > Resources > AC3D Tutorials and How-To's
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
Old 21st August 2009, 06:04 PM   #1
dxxx_athena
Junior Member
Junior member
 
Join Date: Aug 2009
Posts: 5
Default combing 2 geometric figures

how do i combine 1 figure with another, so that the second conforms to the first odd
facet angles.

thanks

Last edited by dxxx_athena; 22nd August 2009 at 04:01 PM.
dxxx_athena is offline   Reply With Quote
Old 24th August 2009, 03:13 PM   #2
lisa
Senior Member
Professional user
 
lisa's Avatar
 
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 917
Default Re: combing 2 geometric figures

Do you mean stitching edges?

Selecting the vertices along the edge of both and creating a convex hull is one approach. Another is to snap the vertices either by distance or one at a time along the open edges.
lisa is offline   Reply With Quote
Old 24th August 2009, 05:32 PM   #3
dxxx_athena
Junior Member
Junior member
 
Join Date: Aug 2009
Posts: 5
Red face Re: combing 2 geometric figures

dear lisa

thanks for responding.

1)
i am just starting out in 3d modeling, i have a little cad background.
what i meant was,picture a sample cube, combine that with a simple pipe,like maybe .125 into one of the surfaces.

2) instead of typing english i should post a drawing, can one post a drawing from
ac3d to the form?

Last edited by dxxx_athena; 24th August 2009 at 05:45 PM.
dxxx_athena is offline   Reply With Quote
Old 24th August 2009, 08:46 PM   #4
lisa
Senior Member
Professional user
 
lisa's Avatar
 
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 917
Default Re: combing 2 geometric figures

A drawing would be fantastic.
lisa is offline   Reply With Quote
Old 24th August 2009, 09:44 PM   #5
donamy
Senior Member
Professional user
 
Join Date: Feb 2006
Posts: 219
Default Re: combing 2 geometric figures

Do you mean something like this ?
Attached Images
 
donamy is offline   Reply With Quote
Old 25th August 2009, 05:58 AM   #6
coldby
Senior Member
Professional user
 
Join Date: Jun 2006
Posts: 102
Default Re: combing 2 geometric figures

Try this out, it worked for me:

- if the two objects don't intersect, use Lisa's suggestion - it's the best way. Then you may retouch the new 'intermediate' object to suit your taste.

- if the two objects do intersect:
1. draw a plane (or a surface anyway) where you want your interface to be, and define it as 'knife' (tools menu -> knife)
2. cut each object in two parts, the 'keep' (the outside of the final object) and the 'discard' (the rest).
3. select the 'keeps' and lock them; delete the 'discards'
4. separate the survivors by whatever distance you deem suitable. Now you can use Lisa's suggestion to stitch them together (this saves you the long and tedious work of joining the vertices of the two 'keeps').
5. select all, vertices menu -> snap together by distance. Then object menu - > merge ; object menu again -> optimize vertices (this will smooth the resulting object)
or:
1. select both objects
2. object menu -> booleans -> union
This should automatically stitch your two objects together but doesn't always produce satisfactory results.
coldby is offline   Reply With Quote
Old 26th August 2009, 12:57 PM   #7
dxxx_athena
Junior Member
Junior member
 
Join Date: Aug 2009
Posts: 5
Default Re: combing 2 geometric figures

thanks for responding, i will try it out.
dxxx_athena is offline   Reply With Quote
Old 26th August 2009, 01:54 PM   #8
lisa
Senior Member
Professional user
 
lisa's Avatar
 
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 917
Default Re: combing 2 geometric figures

Quote:
Originally Posted by coldby View Post
1. draw a plane (or a surface anyway) where you want your interface to be, and define it as 'knife' (tools menu -> knife)
2. cut each object in two parts, the 'keep' (the outside of the final object) and the 'discard' (the rest).
coldby, that's brilliant. I never thought of using the knife to give me an even edge along the two parts.
lisa is offline   Reply With Quote
Old 27th August 2009, 03:54 AM   #9
coldby
Senior Member
Professional user
 
Join Date: Jun 2006
Posts: 102
Default Re: combing 2 geometric figures

Thanks Lisa!
You know, where I've been born there's a saying, "when you're about to drown you grab even on razors"...
coldby is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -4. The time now is 07:54 PM.


AC3D Forum
(C) Inivis Limited 2020