Note: We have shifted this meeting a week forward. Cory Doctorow will be giving a talk on Dec 4 at the University of Waterloo, and there is some chance that tickets will be made available to the public. In this case many KWLUG members would prefer to attend that talk rather than this meeting.
Doug Moen will tell us about Curv, a 3D modelling language he is developing for making art using mathematics. Jonathan Fritz will tell us about his work on Mattermost, an open-source alternative to Slack.
Curv is an open source 3D solid modelling language, oriented towards 3D printing, procedurally generated art, and mathematical visualization. It's a pure functional language where geometric shapes are first class values, and are constructed by transforming and combining simpler shapes using an unusually rich collection of operators.
Instead of polyhedral meshes or other boundary representations, Curv represents shapes as pure functions (Function Representation or F-Rep). This is a volumetric representation, where a function maps every point (x,y,z) in 3D space onto the properties of a shape. This representation is powerful, supporting a wide range of shape operators, and is a good match to the volumetric nature of 3D printing.
F-Rep is well suited to being directly rendered by a GPU. To achieve this, Curv code is compiled into GPU shader programs or compute kernels.
Mattermost is an open source alternative to popular enterprise chat applications like Slack, HipChat, and Microsoft Teams. It can be used on the web, your desktop, or your mobile device. The project is MIT-licensed, with an enterprise version available for paid customers that need additional functionality.