1. OpenCasCADE™ and CollabCAD®
Dr. P. Balasubramaniam and G. Prasad
and
CAD Group, National Informatics Centre
Ministry of Communications and Information Technology
April 2005 Chennai

2. AGENDA Welcome What is OpenCascade ? What is CollabCAD ?
Q & A and Thank you

3. What is OpenCascade ?
An IT Company providing services in the domain of scientific and technical computing
Develops and supports two Open-source solutions
Open Cascade Technology , a set of sowtware components in C++ for 3D modelling, visualization and data exchange.
SALOME, an simulation integration platform based on OCC, VTk and Qt and other open source software.

4. OpenCascade Technology Platform & Advantages
Software development platform freely available in open source
Includes components for 3D Surface and Solid modelling, visualization, data exchange and rapid application development
Access to source code
Openness and interoperability
Commercial support available
Developer community and active forum

5. Getting started and System Requirements
Get OpenCascade - Download from
Order the CD-ROM from
System Requirements
Linux Intel (256 MB RAM, 600 MB disk space, 500 MB swap space, Mesa3D Grhapic Library, GNU C++)
Windows Intel ( 256 MB RAM, 800 MB disk space, 500 MB swap space, OpenGL, Visual C or 7.1, TNT/GeForce Video Card)

6. Version History Recent public releases # 5.2 ( July 2004)
# 5.1 ( October 2003)
# 5.0 ( May 2003)
# 4.0 ( 2002)
# 3.0 ( 2001) became OpenSource
CollabCAD and OpenCasade version history
# onwards used 5.2
# Started with version 3.0 ( when it became OPEN source)

7. 3D Geometric Modelling
Geometric objects beginning from simple entities like points, lines, conics, NURBS curves and surfaces, surfaces of linear extrusion, revolution and offset
# Two kinds of data structure – fundamental and 2D/3D STEP compliant objects supporting analytic and rational or polynomial curves and surfaces
Topological objects are based on boundary representation, supports manifold and non-manifold features
Geometric Algorithms are used for creation and modification of geometric objects and solving geometric problems
Topological Algorithms to create and modify topological objects

8. Modular structure of OpenCascade

9. OpenCascade : Online HTML Help

10. OpenCascade : API Documentation Help
Help documentation
Depicts the tree of Help – Reference documentation available for searching and browsing

11. OpenCascade : Test Harness User’s Guide

12. AGENDA Welcome What is OpenCascade ? What is CollabCAD ?
Q & A and Thank you

13. What is CollabCAD ?
Indigenous Surface/Solid modeller based on Java, Java3D and OpenCascade and other Open-source solutions
Developed by CAD group of National Informatcs Centre, New Delhi
Registered in US Patent Trademark office
First version available for download in 2001
Recent public release is demo version available at
Runs on Linux, Windows and Solaris-SPARC

14. CollabCAD : Consortium and Development Cells
Bhabha Atomic Research Centre, Mumbai
Vikram Sarabhai Space Centre, Trivandrum
Aeronautical Development Agency, Bangalore
National Aerospace Laboratory, Bangalore
Structural Engineering Research Centre, Chennai
Defence Research and Development Laboratory, Hyderabad
Tata Technology Ltd., Pune
Gas Turbine Research Establishement, Bangalore
ISAC and LPSC, Bangalore

15. CollabCAD : Software Architecture
Server
OpenCascade
Client-1
Client-2
Client-3
PostgreSql, MS Access
Data Storage (XML, OCC)

16. CollabCAD : Associated solutions
Bugs and Enhancement Tracking system (BETS) based on J2EE and PostgreSQL for CollabCAD development
Document Archival and Document Management Web-based System using PostgreSQL
Product Lifecylce managament (PLM) based on ZOPE, PLONE and PostgreSQL
Source Code Management based on CVS
Product Data Management based on ZOPE, PLONE and Compiere ERP … all Open-source systems

17. CollabCAD : Logo and Splash Image
Logo and Product Name registered
Splash Image acknowledging Open-source systems like
Java, Java3D
OpenCascade
PtPlot, Cassowary
Zope, PostgreSql, Jython

18. CollabCAD …… Why and What’s so special ?
Collaborative .. Intranet and Internet , also Standalone
Uses proven Open source software and Open standards
Cost-effective solution as development cost is low
Geometry Workbench using two way IGES and STEP standards
Client-side scripting using Jython for automation
XML based geometry data storage and Database connectivity
Multiple language HTML help and also context-based search
Plot Configurator, BOM and BarCode for ERP Solution
VRML Preview
Reverse Engineering, Slicing and Scaling of geometry

19. CollabCAD : Modules Design and Drafting
Surface Modelling and re-generation of curves and surfaces
Solid Modeling using primitives, boolean operations, form features
Constraint based design
Collaborative Design using Intranet or VPN technology
Database Connectivity with geometric entities
Data Exchange using IGES, STEP, VRML
Basic NC like roughing, milling, drilling, threading,etc
Customization of GUI using XML
Scripting Interface using Jython

20. CollabCAD : GUI and Session
Multiple parts in Tabbed pane’s
Menubar, Toolbar with user-friendly ToolTips
Drawing canvas for modelling
Message Panel for information

21. CollabCAD : Tool palette Customization
Customizable Toolpalette with user created Image icon’s
and linked to executable Jython Scripts
Model, Relation and Drawing Tree

22. CollabCAD : Basic and Curves

23. CollabCAD : Surface Modelling
Creation and modification of Planes, Cylindrical, Conical, Spherical, Toroidal to more advanced B-Splines, pipe, revolution and extruded surfaces.
Creation of Offset, Ruled, Fillet, Lofted and Trimmed surfaces.
Local properties and display of normals
Cross-section slicing

24. CollabCAD : Solid Modelling and Form Features
Creation and modification of primitives like Box, Cylinder, Cone, Sphere and Torus
Slab, Revolution, Sweep and Loft ( swept solids)
ThinSolid
Depressions and Protrusions like Extrude, Revolve, Pipe, Hole, Rib/slot
Boolean operations like Union, Difference, Intersect and Trimming(cutting)
Blending and Chamfering
Cross-section slicing

25. CollabCAD : Dimensions and Detailing

26. CollabCAD : Numerical Control

27. CollabCAD : Constraints

28. CollabCAD : Tools

29. CollabCAD : Editing and Manipulation

30. CollabCAD : View and Workspace

31. CollabCAD : Part Management
Compressed XML (*.muz)
Image capturing (gif,jpeg)
Printing and Plotting
Save with VRML Preview

32. CollabCAD : Data Exchange
Import
IGES, STEP and STL
Export
IGES, STEP(203 and 214), VRML and STL
Advanced and Dedicated
CATIA, EUCLID, ACIS SAT, DXF Import/Export and ParaSOLID-XT Import available from OpenCascade Company

33. CollabCAD : Specialized Solutions
AVERT from ADA, Bangalore
FINNESE/FINEGRAF ( FEA software) from ADA, Bangalore
IITZEUS (CFD Software) from BARC and IIT Mumbai
KNEXT (Knowledge based Engg. Framework) from TTL, Pune
FEAST (FEA software) from VSSC, Trivandrum
PARAS (Parallel software) from VSSC, Trivandrum
Flow Solvers from NAL, Bangalore
FINEART (FEA using adaptive refinement techniques) from SERC, Chennai

34. CollabCAD : VRML Export and AVERT
Creation of part in CollabCAD
Export the part to VRML (*.wrl)
Import VRML file (*.wrl or *.csb) in AVERT

35. CollabCAD

36. CollabCAD : Help and Licenses

37. CollabCAD : HTML based User’s Guide

38. CollabCAD : PDF based Help

39. CollabCAD : Context based Search and Help

40. Q and A

41. Thank you www.collabcad.com
and