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Published

So, last month, I presented a paper at SimBuild 2010. Today, the lab I work for published a link to the preprint, which enters me into the scientific roll call. I am stoked. Check it out: http://www.nrel.gov/docs/fy10osti/47522.pdf …

Radio Radiance

Last Thursday, I hit the airwaves, yakking about lighting simulation. For some reason the Boulder Green Building Guild was interested in my take on the use of simulation in optimizing the energy efficiency of building designs in the US, on the latest installment of Footprint Radio. It was a thrill…

Update

Still alive. Brenda saw her third production season at the Colorado Shakespeare Festival to fruition; all shows are up and running, her crew gets tighter every year and she seems to like it more all the time. Riding my bike again; still outta shape. The four eggs nesting in our…

I don't get it.

Once again, I have had a humbling experience working with Radiance. Just when you think you know even a little bit about this program, you are told otherwise, simply by attempting to learn more about it. Details here: initial results with rtrace's multiprocessing feature 9QM93TAVDT59…

Blast from the Past

(light transport simulation geekery alert) Freshly inspired from the recent Radiance Workshop, and cooped up under 22 inches of snow in Boulder, yesterday I took an old web page I created and integrated it into my website. It's a summary of my first foray into the use of illums on…

Lettin' the Cat Outta the Bag

I know, it's been a while. Here's the thing: I got a new job! After almost four years at the firm I work for, I am moving on to a new job, in a new town. It's still a lighting/daylighting/sustainable design job, but it's in an entirely different…

Speedy

3421 seconds. That's how long it took my new laptop to render the de facto radiance benchmark scene. That's good enough for 13th place on the list, not bad for a laptop marketed to college kiddies and soccer moms. My old laptop is 36% slower in this test, and cost…

Lumen Awarded

A former co-worker just IM'ed me to let me know that a project I worked on has received two Lumen Awards for exemplary lighting/daylighting design. I am pretty psyched, since to date these are my first two Lumens in my 15 year career in lighting. Awards are stupid, until…

Good and Bad

Well, it's been a few days now, and I have good news and bad news about the new MacBook Pro. First off, it's fast; much faster than my old Powerbook, but then again my old Powerbook is four years old and that's not a fair comparison. Regardless, I'm pleased as…

Dualin' part Deux

The other day, I was gushing on this site about my newfound access to a dual processor linux machine. But now, after yesterday's announcement at Macworld, I have ordered one of the new Apple laptops, which will sport a dual core Intel cpu. Come February (hopefully), I'll have a personal…

Dualin'

It's sad, but this excites me: Today I got access to a dual processor Radiance machine, and finally got to try out a newish feature of rpict, the -N switch. Using this option, rpict will send multiple renderings to multiple CPUs if your machine has them. If I had four…

Long Overdue Update

Hi. It's been a while. Rest assured, I am alive and well. But my lack of presence online and an untimely email outage actually led my friend John to think I actually was dead. I'm not. I'm alive. And busy. My last post was about my trip to the Oshkosh…

In the Company of Giants

I think that when you appear in the release notes for this software, you are officially a geek. Scroll down a ways, through all kinds of compu-lighting-geekery, and you will discover that yours truly has added a tiny piece of functionality to a fantastically complex piece of software, software that…

ltview: a Radiance utility

Radiance User: “Boy, that objview script sure is handy for looking at scene geometry; if only there was something like that for looking at the distribution of my light source files.” Announcer: “Well, THE WAIT IS OVER!! That’s right, now there’s a script…

Geek Fest

<p>Two weeks from today, I&#8217;m going to Berkeley, CA to attend the <a href="http://radsite.lbl.gov/radiance/workshop/">Second Annual Radiance Workshop&#8221;</a>, where people from around the planet will convene for tutorials on using <…

Trans flowchart

<p>Hi. Miss me? So, for the last week or so I have been struggling to understand some screwy results I&#8217;ve been getting with <a href="http://floyd.lbl.gov/radiance/">Radiance</a>, using the trans material to emulate some sun…

pcond and small viewing angles

<p>OK, here&#8217;s another one. </p> <p>Problem: Running a site rendering (or any image with a very narrow viewing angle) through pcond -h causes the image to become blurry.</p> <p>Solution: Disable the visual acuity…

Rendering falsecolor on glass with vwrays

vwrays -x XRES -y YRES -vf viewfile -fd | rtrace -h -fd -opn octree \ | rtrace -fdc -I renderoptions -x XRES -y YRES octree > illumpicture.pic The first rtrace computes the intersection point (which is fast) and the second rtrace does the illuminance calculation. Cool, yes? Yes.…

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