New Schedule Editor 09 Jun, 2018
I have finally finished my online annual hourly schedule editor, which took several iterations and quite some time to get working the way I wanted. It's of interest because hopefully its relatively easy to use and can read and write schedules in a range of different formats, including EnergyPlus (IDF and epJSON), OpenStudio (OSM), DIVA/DaySim (.OCC.CSV) and some other CSV layouts.
Why Educational Tools 12 Nov, 2017
A common question I get, both directly and indirectly, is why do I spend so much time on what seem to be pretty limited educational apps rather than doing a full-on building analysis tool that can handle real projects. I documented this at the start of a recent research paper , but figured that I should probably summarise my reasons here as well.
JSON Settings 08 Nov, 2017
Quite a few people have asked lately about the settings editor in my web apps and how to use it. Actually most of the questions were more along the lines of 'why on earth do you use JSON for storing settings in your apps, and what’s with that weird editor?'. Well I have one or two good reasons for both, which I shall endeavour to explain.
Two New Web Experiments 01 Nov, 2017
As part of adding support for scriptable tutorials, I had to create my own 3D vector font and annotation libraries. Both are intended to be highly dynamic and customisable so I wrote a couple of apps that interactively control their properties to thoroughly test them. As a bonus, these apps also serve as font and annotation designers, allowing you to do visual customisations and then copy/paste the code required to create that text or annotation in a script.
Long Time, No Blog 30 Oct, 2017
Whilst I have actually been writing a bunch of stuff for my blog, nothing has seemed sufficiently insightful or complete enough to post for quite a while. However, I've reached a bit of tipping point now and desperately want to get some of it out there, but just don't have time to polish it into anything other than what it is. Thus I've decided that I am just going to put it up regardless, so apologies in advance...
Moving From Drupal to Hugo 08 Feb, 2016
My content management system of choice is Drupal. It has served me pretty well and allowed me to do a lot of things I probably could never have done without it. However, it has become such an attention seeker these days; with security issues, module upgrades, heavy comment spam and database blowouts seemingly weekly events. Also, upgrading to the newest version is never as smooth as promised. Thus, instead of upgrading my blog to Drupal 8, I have dumped it entirely and moved to a completely static site using Hugo.
Understanding WebGL 05 Jan, 2016
My biggest issue with WebGL, and actually all non-immediate-mode OpenGL, is constantly fighting with the requirements of vertex buffers and attributes. I seem to be always looking for ways to minimise and optimise memory whereas vertex buffer objects always seem to want me to waste large amounts of it with duplicate attributes. However, reconciling that requirement in my own mind has actually given me a bit of insight into potentially alternate uses for the WebGL render pipeline.
BIM and NatHERS Headaches 21 Nov, 2015
Given that my blog doesn't get updated much and there is no other obvious output, lots of people ask me what exactly I am working on at the moment and why it seems to be taking forever. Usually I just mutter the odd platitude, but today I thought I would combine a bit of a rant with an actual example of the kind of problems I am currently and seemingly constantly wrestling with. This one involves the ideal of determining NatHERS compliance directly from a fully integrated building information model (BIM).
Web Experiments 30 Sep, 2015
PerformativeDesign.com has gone into a short code-freeze for some external testing now so I have finally got a bit of time to catch my breath. As part of that work, I have had to do quite a few small experiments and proofs-of-concept, just as a way of seeing what was possible and then working out the best ways to do various things. Some of these were a bit interesting and often a lot of fun so I thought I'd polish up a few and make them available as a small taster of things to come, hopefully quite soon.
Earth/Sun Relationship Update 12 Jun, 2014
I've been doing a fair bit of low-level optimisation work on my solar calculations code recently and, whilst I have a reasonably extensive test suite for it, nothing beats being able to actually see things in action and interactively put them through their paces. Also, I've been wanting to update my old Earth/Sun Relationship app for a while now with some new ideas and graphics, so the synthesis seemed pretty logical. Thus, I just finished a brand new version with lots of new features as a way of both examining and visualising the relationships involved and letting me test and validate the core code.
Processing Libraries - Where are They? 26 May, 2014
As I've mentioned in previous posts, I have been working on a graphical user interface and 3D modelling library in Processing for some time now. I originally chose Processing because it was truly cross-platform and the only tool that also supported embedded web applets. I got to a reasonably advanced state in v1.5.1 and then, of course, everything changed. Processing 2 moved entirely to OpenGL and completely abandoned web applets.
Dynamic Charts in WPF 02 Aug, 2013
There are a plethora of WPF charting solutions out there, both commercial and open source. I have tried quite a few but have yet to find one that is capable of handling highly dynamic data whilst also providing useful customisations such as centered axis or generating polar diagrams. I do most of my dynamic charts in OpenGL but labelling axis and data points using textured fonts lacks some of the polish I have seen in many WPF-based solutions. Thus I thought that, for my Windows apps, I would try porting my OpenGL chart library to WPF.
The New Normal 07 Apr, 2013
My wife and I had a bouncing baby boy late last year and man, did he arrive like a shrieking banshee from hell. That was four months I hope never to experience again and, thanks to some serious and prolonged lack of REM sleep, I hope soon to forget. Like all new parents, you just dig in and pray for things to slowly get back to normal. However, with the passing of time comes the dawning realisation that this is the new normal. Even though I really liked my previous life, this post isn't a rant about that. It's about some of the things I've discovered about my new one.
Event Handling in Analysis Classes 22 Mar, 2013
As I have mentioned in a couple of other posts, I have been working on the API for a suite of building performance analysis classes, with a particular focus on dynamic visualisation and interactive manipulation. Part of this involves implementing an event notification system so that changes can propagate through even the most complex object hierarchies without the user having to worry about the internal plumbing. Unfortunately the standard approaches that I have found aren't particularly suitable here, so I have had to hack out something of my own.
Where's the Point in 3D APIs 28 Sep, 2012
Whilst working on an analysis library recently, I have been trying to reconcile how best to define positional and directional information. Most 3D frameworks and Application Programming Interfaces (API) use a single
Vector class (or similar) to define a generic object with X, Y and Z properties, which is then used interchangeably to describe both points in space and direction vectors. The closer I look, however, the more I think that it's important to clearly distinguish between the two and treat them as separate classes in an API in order to avoid inadvertent user mistakes. Unfortunately there is no single knock-out justification for either approach, so the following are some simple contemplations on the subject as I try to work out which way to go.