[x3d-public] proposed CAD Working Group Agenda, Thursday 7 April, 0800 pacific
Don Brutzman
brutzman at nps.edu
Thu Apr 7 09:29:33 PDT 2016
Attendees: Meghan Coakley, Vince Marchetti, Christophe Mouton, Dick Puk, Roy Walmsley, Don Brutzman.
Regrets, with interest: Hyokwang Lee and Soonhung Han. Don will follow up with them in a corresponding teleconference (to be announced).
We met as planned on Thursday 7 April, 0800-0930 pacific time.
http://www.web3d.org/calendar/month
http://www.web3d.org/member/teleconference-information
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a. Introductions and work progress discussion
Interesting discussion on AP-242 tessellation exchange which may be and current practices with B-Reps, X3D.
http://www.ap242.org
http://www.steptools.com/support/stdev_docs/express/ap242/index.html
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b.Consider Web3D 2016 workshop on
3D Printing and 3D Scanning for CAD and X3D
http://web3d2016.web3d.org
http://web3d2016.web3d.org/submissions/workshops
Original agenda draft from 3 April:
http://web3d.org/mailman/private/cad_web3d.org/2016-April/000481.html
Edited version follows.
Title: Web3D 2016 Workshop on "CAD, Additive Manufacturing, 3D Printing and 3D Scanning"
Motivation: determine whether a combined, harmonized approach to "CAD, Additive Manufacturing, 3D Printing and 3D Scanning" makes sense for X3D.
Goals:
- Briefly review state-of-the-art progress in four fast-moving but related, overlapping fields:
- Computer-Aided Design (CAD) modeling, Additive Manufacturing (AM) processes, 3D Printing, and 3D Scanning.
- Workshop attendees will present, compare and collate goal requirements for X3D in these arenas.
- Important checkpoint: feasibility of a single common X3D Profile for CAD, AM, 3D Printing and 3D Scanning.
- If needed, outline a Call for Contributions to address any expected gaps.
- Workshop results will serve as the basis for focusing 2016 efforts by the X3D CAD Working Group.
Related: consider 1-hour to look at NIH 3D Print Exchange, held as an overlapping session with a paired workshop on Medical visualization. Topics of mutual interest include medical AM, metadata, security and archival records. Hopefully that workshop would include contributions by both Medical and H-Anim working groups.
References:
a. X3D Computer Aided Design (CAD) Working Group, http://www.web3d.org/working-groups/computer-aided-design-cad
b. Web3D Calls for Contributions, http://www.web3d.org/call-contributions
c. NIH 3D Print Exchange, http://3dprint.nih.gov
Needed:
a. Show examples about scanning and point clouds: EDF, Smithsonian, Fraunhofer, Bit Management, DotProduct scanner, Synergy Software Design.
b. Related work in TC1184 colleagues, working on AP242 printing & scanning for ISO STEP standard
Related: will there also be an Industrial Use Cases forum? Not yet planned as a separate activity, might be part of this workshop. Christophe is considering how to best proceed.
Proposed schedule
15 minutes: participant introductions, agenda (Vince and Don), purpose of an X3D profile (Dick)
15 minutes each: overviews of CAD (Vince), AM (Don and someone), 3D Printing (Vince and Gordon Fisher?), 3D Scanning (Don & Mike Russalesi). Include demos!
30 minutes overview: Related standards such as AP242 (Christophe), STL/AMF (Don and Vince), 3MF (Alan Hudson?).
30 minutes discussion: Share and compare requirements (all contributors), briefly discuss next steps.
Shared session:
30 minutes. Metadata, compression, digital signature, geometric compression, data compression (Don).
30 minutes. NIH showcase (Meghan and Darrell)
Expected attendance: 10-20 people. Single session, no breakouts, single projector, forum-style seating.
Follow-on workshop in afternoon: Medical and Humanoid Animation (H-Anim).
Follow-on panel during conference itself with industry leaders (Christophe).
CAD Working Group BOF: confirmed yes, we will report out results. Monday (preferred) or later during SIGGRAPH.
Don & Vince will prepare workshop submission.
FYI paper deadline is in 1 week.
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c. AEC Hackathon 3.1 coming up 29 April - 1 May in Los Angeles.
http://aechackathon.com/aec-hackathon-socal-2
Growing our repertoire to include Building Information Management (BIM) is a possibility when we are ready...
No one planning to go yet, interesting opportunity to consider. BIM support and alignment seems a logical future strategy for X3D.
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d. Outside messaging:
- should we create an X3D CAD flyer to help with outreach?
- showcasing examples?
- resources when outside CAD people say "What can X3D do for me?" Some attachments are on our public page:
http://www.web3d.org/working-groups/computer-aided-design-cad
Yes this is needed, not too much jargon, show the "big picture" etc. Vince communicated how he gets inquiries but responding is difficult.
Vince is willing to draft a few things up for group review and discussion.
This will be primary topic for next month, please bring good ideas with "sleeves rolled up" for working on draft assets.
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e. We need 2 volunteers to fill out Working Group Annual Report for follow-on CAD meeting.
Doing this will help us with outreach materials too.
Roy posted the outline to help guide us on what is needed:
> *From:*Anita Havele [mailto:anita.havele at web3d.org]
> *Sent:* 29 January 2016 17:58
> *To:* 'Roy Walmsley'
> *Subject:* WG Yearly Report
>
> Hi Roy,
>
> In the past we have asked the following from the WG chairs. I also want to add something on how the WG has contributed to the advancement of the spec.
>
> WG Mission/Objectives
> WG Participation/partnerships
> WG 2015 Accomplishments - Tasks competed/pending/road blocks
> WG 2016 Goals/work items
> WG 2016 Outreach Initiatives
> WG Issues and concerns
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f. Jargon check: CAD Distillation Format (CDF) or CAD Distillation Filter (CDF)?
Discussion summary:
"Format" was the original working-group term, while we were looking at B-REPs and other things.
Later we decided we didn't need another format. Instead we focused on improving CAD within the existing X3D file formats.
Filter was the notion that X3D scene graphs can be progressively refined to better represent big CAD models: geometric compression, minutia reduction, polygons -> NURBS, etc.
"Format" should be considered the earlier term and no longer operable.
CAD Distillation Filter (CDF) is the operative term.
p.s. perhaps this deserves an FAQ question somewhere.
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Minutes reviewed by participants prior to posting.
All review, questions, comments and improvements are welcome. Many thanks everyone.
all the best, Don
--
Don Brutzman Naval Postgraduate School, Code USW/Br brutzman at nps.edu
Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149
X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman
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