Tyler Morgan-Wall<p>Testing the accuracy of simulating star trails with R and libopenexr, rendered in a pathtracer: lookin' pretty good so far! Differences seem to be primarily from real camera lens distortion from the wide angle lens versus a perspective camera.</p><p><a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="tag">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a> <a href="https://fosstodon.org/tags/rayverse" class="mention hashtag" rel="tag">#<span>rayverse</span></a></p>
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#rayrender
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Tyler Morgan-Wall<p>Procedurally rendered location/time-accurate star trails + simulated twilight atmosphere, now with star spectral → RGB color information included! It's subtle (even exaggerated here slightly), but there. All rendered in <a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="tag">#<span>RStats</span></a> with <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a></p><p><a href="https://fosstodon.org/tags/rayverse" class="mention hashtag" rel="tag">#<span>rayverse</span></a></p>
Tyler Morgan-Wall<p>🤯 Rendering realistic sunsets in R<br />🤯 🤯 Rendering realistic sunsets in R, with accurate stars for a given latitude/long<br />🤯 🤯 🤯 Rendering realistic sunsets in R, with accurate stars for a given lat/long AND time/exposure, giving you beautiful star trails!</p><p>your move, SAS</p><p><a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="tag">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a> <a href="https://fosstodon.org/tags/rayverse" class="mention hashtag" rel="tag">#<span>rayverse</span></a></p>
Tyler Morgan-Wall<p>Nothing is better than relaxing on a hot summer Friday night, sipping a cold drink, and enjoying a beautiful sunset accurately rendered (as if seen from a jet airliners cruising altitude while on a red eye) in your favorite statistical programming language 🥂</p><p><a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="tag">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a> <a href="https://fosstodon.org/tags/rayverse" class="mention hashtag" rel="tag">#<span>rayverse</span></a></p>
Tyler Morgan-Wall<p>Twilight support!</p><p>One of my favorite things is finding a methods paper (here, atmospheric rendering), implementing it, thinking to myself "Man, it would be nice if the method supported XYZ!", and then finding that the paper implementing XYZ was released fairly recently. Truly surfing the crest of human knowledge!</p><p><a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="tag">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a> <a href="https://fosstodon.org/tags/rayverse" class="mention hashtag" rel="tag">#<span>rayverse</span></a></p>
Tyler Morgan-Wall<p>After setting up the required infrastructure on CRAN with several packages providing static libraries, I finally have some new <a href="https://fosstodon.org/tags/rayverse" class="mention hashtag" rel="tag">#<span>rayverse</span></a> features on the way! Shown here: dynamic sky generation for a given lat/long and time of day, based on the Hosek-Wilkie radiance model. </p><p><a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="tag">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a></p>
Tyler Morgan-Wall<p>Great 3D <a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="tag">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/dataviz" class="mention hashtag" rel="tag">#<span>dataviz</span></a> of <a href="https://fosstodon.org/tags/gaming" class="mention hashtag" rel="tag">#<span>gaming</span></a> data (!) on DIB on the distribution of frags in the classic Counterstrike map, de_dust2. The author followed a tutorial by @mrpecners.bsky.social (not on mastodon) and commented that the hard part was getting the data--the 3D rendering was trivial!👍 Shows the power of a good tutorial and <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a>!😀 </p><p><a href="https://www.reddit.com/r/dataisbeautiful/comments/1jlg2nv/oc_density_of_the_location_of_the_frags_in/" target="_blank" rel="nofollow noopener" translate="no"><span class="invisible">https://www.</span><span class="ellipsis">reddit.com/r/dataisbeautiful/c</span><span class="invisible">omments/1jlg2nv/oc_density_of_the_location_of_the_frags_in/</span></a></p>
terence<p>Happy Lunar New Year!</p><p><a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a> adventures, an <a href="https://fosstodon.org/tags/rstats" class="mention hashtag" rel="tag">#<span>rstats</span></a> tale</p>
Tyler Morgan-Wall<p>1/3‼️New <a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="tag">#<span>RStats</span></a> package update! And it's a doozy! Announcing rayrender v0.38.0: the emoji + denoiser update! text3d() now support custom fonts and emojis (for better or for worse😉), and <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a> now has realtime denoising support via OIDN! Which means no more multi-hour renders—Merry Christmas!</p>
terence<p>Happy <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a> holidays!</p><p><a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a> adventures, an <a href="https://fosstodon.org/tags/rstats" class="mention hashtag" rel="tag">#<span>rstats</span></a> tale</p>
Tyler Morgan-Wall<p>Snake, snake, Santa Claus snake...</p><p><a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="tag">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a></p>
Tyler Morgan-Wall<p>The results of my personal "advent of code" are almost ready to come down the chimney! 🎄🎁🎅</p><p><a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="tag">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a></p>
Tyler Morgan-Wall<p>😭 Nooo! You have to track sample probabilities and use multiple importance sampling to balance BRDFs, lights, and environment maps for unbiased convergence, or your rendering will be biased AND noisy!</p><p>🤪 haha denoising makes renderer go brrr</p><p><a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="tag">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a></p>
Tyler Morgan-Wall<p>4/4 I've been thinking about render speed since talking to a few journalists who've used <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a> for real <a href="https://fosstodon.org/tags/DataViz" class="mention hashtag" rel="tag">#<span>DataViz</span></a> work under extremely tight deadlines: for some people, the ability to iterate, change, and render quickly can be the deciding factor on whether to use a tool or not!</p>
Tyler Morgan-Wall<p>1/4 Denoising: Absolute game-changer for pathtracing/3D <a href="https://fosstodon.org/tags/Dataviz" class="mention hashtag" rel="tag">#<span>Dataviz</span></a>! The below video was captured in realtime (!) with <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a> in <a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="tag">#<span>RStats</span></a>. I was worried for a while about CRAN portability (this requires an install of OIDN), but my configure-fu has gotten good enough that I can work around that now.</p>
terence<p>Turns out path tracing 1.4 million points takes a while, even with <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a>'s speed upgrade. 😅</p><p>Need to rethink this. Can't just throw computing power at it. The city of Montréal has over 9 billion.</p><p>So I thought, "What if I save an obj file and use *gasp* <a href="https://fosstodon.org/tags/blender" class="mention hashtag" rel="tag">#<span>blender</span></a>?" But the points don't save so that route's out.</p><p>Hmm.</p>
Tyler Morgan-Wall<p>1/3 ‼️Package update alert‼️Need a doomscrolling break? How about a dramatically faster version of <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a> to clear your mind! Developed using the nice C/C++ features of the new <span class="h-card" translate="no"><a href="https://fosstodon.org/@Posit" class="u-url mention">@<span>Posit</span></a></span> Positron IDE, rayrender is more than 40% faster than before! Less heat, less time, faster 3D data viz!</p><p><a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="tag">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/rayverse" class="mention hashtag" rel="tag">#<span>rayverse</span></a></p>
terence<p>Going to play with caustics in <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a> for a bit.</p>
Tyler Morgan-Wall<p>"Let me try implementing a 4-wide BVH to see if I can use SIMD to speed up pathtracing by a decent factor..."</p><p>(implements it)</p><p>"Why is this still so slow? Let's profile the compiled code on a line-by-line basis..."</p><p>(discovers previously unknown C++ footgun that is wasting lots of cpu cycles needlessly, and that I would never have discovered without detailed profiling tools)</p><p>"Okay, let's see how the new implementation performs..."</p><p>🤯 🤯 🤯 Almost 16x faster!</p><p><a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="tag">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a></p>
Tyler Morgan-Wall<p>Fantastic work and journalism by the team at Bloomberg Graphics that used R, rayshader, and rayrender to produce the 3D animations to accompany this story on the rubble and scale of the cleanup effort in Gaza!</p><p>"Gaza Reduced to 42 Million Tonnes of Rubble. What Will It Take to Rebuild?" </p><p>By Fadwa Hodali, Fares Akram, Jason Kao, Jennah Haque, Jeremy C. F. Lin</p><p>Link: <a href="https://www.bloomberg.com/graphics/2024-gaza-who-will-pay-to-rebuild/" target="_blank" rel="nofollow noopener" translate="no"><span class="invisible">https://www.</span><span class="ellipsis">bloomberg.com/graphics/2024-ga</span><span class="invisible">za-who-will-pay-to-rebuild/</span></a></p><p><a href="https://fosstodon.org/tags/RStats" class="mention hashtag" rel="tag">#<span>RStats</span></a> <a href="https://fosstodon.org/tags/rayshader" class="mention hashtag" rel="tag">#<span>rayshader</span></a> <a href="https://fosstodon.org/tags/rayrender" class="mention hashtag" rel="tag">#<span>rayrender</span></a> <a href="https://fosstodon.org/tags/dataviz" class="mention hashtag" rel="tag">#<span>dataviz</span></a></p>
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