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If graphics in Smalltalk are of interest to you, then this talk on CAD at StS 2004 is a must see. Register today!:

3D CAD Framework for Smalltalk
presentation
A-S Koh:
Tuesday 2:45:00 pm to 3:30:00 pm

Abstract: 'StCAD' is a basic 3D CAD framework in Smalltalk (VisualWorks 7.x). It extends the GF/ST 2D drawing framework into 3D. It also include 'StGeo' which is the 3D geometric domain, 'StMath' which provides the mathematical support for 3D CAD and motion simulation computations, and 'StDoc' which is a simple word processor. 'StMath' is also suitable for engineering, scientific and business computing. The parcels are open source using Lesser GNU Public License. Users can use these parcels with other private software to create 3D applications like motion simulation, finite element analysis, CAD, scientific visualization, etc.

'StCAD' allows users to create and manipulate assemblies, which are collections of 3D parts. The parts are 3D solids, which can be connected by joints, constraints, contacts, actuators, springs, dampers or forces. The parts and connections define the structure or mechanism that the assembly is meant to represent. Animation is possible, if the user can provide time series of position and orientation data for the parts.

Users can also obtain output data in the form of plots and tables. XY plots can be zoomed and set to equal scales. Data series available include linear and angular displacements, velocities, accelerations and other user generated data.

'StCAD' has been used to create a freeware called 'freeCAD' which is a 3D CAD with Motion Simulation. The parcel 'StMbD' has been included to provide a functional demonstration, but its source code is hidden. For more information visit: http://www.askoh.com

Bio: http://askoh.com/webcv.html

See you in Seattle!

Read: 3D CAD at StS 2004