Random Etc. Notes to self. Work, play, and the rest.

Posts Tagged ‘Graphics’

New Processing Hack: Line Caps and Joins in OpenGL

In Processing, Weblog on 9 February 2008 tagged 2d, Graphics, java, opengl, Processing-Hacks, Processing.org with no comments

One of the sad things about using the OpenGL rendering option in Processing is the lack of control over line weights, caps and joins. This week I allowed myself to get distracted by this issue for a little bit too long, but I did succeed in solving it, at last:

I've put some code about line caps and joins in Processing & OpenGL up on Processing Hacks in case it's something that bothers you too. I've not tested it extensively so I'd welcome bug fixes and suggestions there, or in the comments here. One thing I'm interested in doing next is extending (or reimplementing) BasicStroke to generate shapes for thick polylines with varying line thickness. If that's something you've done before, please let me know.

I'm using Java's BasicStroke to generate the path outlines, and GLU's tesselators to generate a mesh that will fill correctly in OpenGL. I "borrowed" the code for the latter from Ben Fry's PGraphicsOpenGL font rendering – thanks Ben!

Scrunchies

In Imported, Processing, Uncategorized on 15 December 2005 tagged Generative, Graphics, Images, Processing, Scrunchies with 1 comment

A Brief History Of Me

In Imported, Uncategorized, Weblog on 3 September 2004 tagged 3D, Graphics, Images, Me, Robots, Simulation, Social-Networks, Trees, Visualisation with no comments

For any readers who don't know me, here is a brief overview of some of the things I have been involved with recently.

Non-realistic Rendering In Immersive Environments

Is there an 'uncanny valley' for rendering quality? For our EngD group project, Sheep Dalton (Ovinity), Monica Martini (Martini Architects), Sean Varney (Soho Cyberscan / Framestore CFC) and I built a model of an Indian Temple and a non-photorealistic OpenGL rendering engine for use in desktop and immersive VR systems.

Social Network Visualisation

A social network visualisation for the students, alumni and staff who have been involved with the MSc Virtual Environments in the Bartlett (UCL's architecture school).

Algorithmic Art

A series of pixel-exposure techniques using the Processing environment.

Virtual Trees

Whipping trees, a VRML world and a study in dynamic growth, responsive form and emergent spaces. Completed as part of Methods of Synthetic Construction 1. You can view all our VRML coursework on the course website. This work was significant for me because it involved taking what were effectively several small sketches (pieces of code) and combining them into a single piece of work, with a narrative and a sense of cohesion.

2D Robot Simulation

At Leeds University, I started the development of a Bio-inspired Evolutionary Agent Simulation Toolkit, a project initiated by Seth Bullock and ably continued by David Gordon (now of Framestore CFC). Whilst I was there, I also took part in a Bio-inspired Computing reading group, worked on an interface for playing poker against evolved neural-network players, and investigated the possibility of doing image processing with artificial life.