Yann Le Gall
playing with this concept over the weekend. I like how the colors/glow turned out.
May 27 at 7:18pmWeb
Show threadNirroMay 27
@ylegall that's beautiful, I love the idea and the colors
Show threadMillyMay 27
@ylegall "Trippy digits" if you needed a title.
Show threadDidier MalenfantMay 27
@ylegall The numbers are scary πŸ˜‚
Show threadrichMay 27
@ylegall ooooooh! 😍
Show threadcobaltMay 27
@ylegall Does remind me of the Lumen Cold Harbor project in Severance!
Show threadMx. Luna CorbdenMay 28
@cobalt123 @ylegall I recently learned that the word "lumen" describes the space inside bodily tubes... I was like wait, was that the most perfect subtle metaphor??
Show threadcobaltMay 28
@corbden @ylegall Oh yes, that is quite serendipitous or magnificent writing.
Show threadEfi (nap pet) πŸ¦ŠπŸ’€May 27
@ylegall pretty!
Show threadJohn EinselenMay 27
@ylegall Lovely!
Show threadnonbinarycoderMay 27
@ylegall wow i love this!!
Show threadSindarina, Edge Case DetectiveMay 27
@ylegall @emptyful Awesome 🀩
Show threadGustavoMay 27
@ylegall would look great as an animated wallpaper 😁
Show threadaquarameliaMay 27
@ylegall amazing!
Show threadDaniel M KarlssonMay 27
@ylegall Looks amazing.
Show threadEagle3May 27
@ylegall nice cube.
Show threadAaronMay 27
@eagle3 @ylegall Does it roll? No! Itrolls!
Show threadTripTilt /// ttMay 28
@ylegall
very cool. This is what happens when you take the green tint filter off of the matrix. :)
Show threadMedea VanamondeπŸ³οΈβ€βš§οΈ ♀May 28

@ylegall @lisamelton

Can feel this one in my back.

Apparently having anxiety attacks all day long CAN trigger my visual to tactile synesthesia

Show threadJustRosy πŸ‡ΊπŸ‡¦May 28
@ylegall Is this for global weather patterns? If not, could it be adopted for that?
Show threadYann Le GallMay 29
@JustRosy it's not based on anything physical, just a neat animation.
Show threadJustRosy πŸ‡ΊπŸ‡¦May 29
@ylegall Was just thinking, it would be awesome to see the air directions mapped this way during the weather reports! πŸ™‚
Show threadYann Le GallMay 29
@JustRosy
kinda similar vibes: https://earth.nullschool.net/
earth :: a global map of wind, weather, and ocean conditions

See current wind, weather, ocean, and pollution conditions, as forecast by supercomputers, on an interactive animated map. Updated every three hours.

Show threadJustRosy πŸ‡ΊπŸ‡¦May 29
@ylegall Cool! Thanks for sharing it!
Show threadPhoto Ewen πŸ“·May 28

@ylegall

That is gooooooorgeous! I love when it jumps to a tight frame of the motion.

Show threadya boi timMay 28
@ylegall that's cool as fuck
Show threadViSzKeMay 28
@ylegall I need this as a wallpaper
Show threadmespiqueMay 28

@ylegall

This is your last chance. After this there is no turning back. You take the blue pill, the story ends, you wake up in your bed and believe whatever you want to believe. You take the red pill, you stay in Wonderland, and I show you how deep the rabbit hole goes… Remember, all I’m offering is the truth, nothing more…

Neo: What's in the pill?

Morpheus: LSD, mostly.

Show threadJacob SomethingMay 28
@ylegall That's lovely!! What did you do? Is this shader code?
Show threadYann Le GallMay 29
@jkanev thank you. it's mostly procedural operations on geometry, and some basic material/post-processing shaders in Houdini's render pipeline.
Show threadanoraxMay 28
@ylegall
Gorgeous!
Show threadrobert daniel pickardMay 28

@ylegall nice!

is there some programmatic relationship between the colors? or just colors you liked?

Show threadYann Le GallMay 29
@rdp Thank you, the assignment of color over time is driven by the noise function, but I chose the overall palette.
Show threadClaudiusMay 28

@ylegall whoa that's pretty!

My first glance thought was "looks like a cell". For that, it would be cool to have all characters be A/T/C/G

Show threadStefanMay 28
@ylegall fucking amazing!
Show threadLeonard RitterMay 28
@ylegall getting isolines as curves to move oriented quads along is next level stuff. i wouldn't even know where to start.
Show threadYann Le GallMay 29

@lritter Thanks, the software I'm using (Houdini) has some nice utilities.

For example, Houdini provides a "copy to points" operation which can transform arbitrary geometry onto points with attributes to control orientation, scale, etc. so it is essentially building a 4x4 matrix to transform vertices.

Show threadLeonard RitterMay 29
@ylegall thank you. what you do once you have the points was clear to me but how do you get the points?
Show threadaevaMay 29
@lritter @ylegall I assume it's like blender's "distribute points on faces". you just delete the ones that aren't near the isolines and the ones that are too close to each other?
Show threadLeonard RitterMay 29
@aeva @ylegall you can snap them with a distance field but how do they move? you would have to take the gradient and pick a tangent which is easy on a 2-manifold; yet you have two possible directions: cw/ccw
Show threadjungkopfMay 29
@lritter @aeva @ylegall
In a previous comment, the algorithm for building the isolines is described. Iβ€˜m guessing that the points of a line are then converted to curve primitives and evenly resampled using Houdinis β€žresampleβ€œ node. Houdini easily allows you to assign a value β€žuβ€œ along a curve ranging from 0 (start) to 1 (end). This value can be used to look up the global xyz-position for a point at β€žuβ€œ along the curve. Incrementing β€žuβ€œ for every point moves it along the curve.
Show threadjungkopfMay 29
@lritter @aeva @ylegall
That said, there probably are many more ways to do it in Houdini :D
Show threadmmbyMay 29
@jungkopf @lritter @aeva @ylegall yeah my guess too - the isolines don't change, so the isolines could be approximated by b-splines on the manifold, then animating is easy (since you know the arclength for the animation, which would be hard/impossible(?) to parametrically describe)
Show threadaevaMay 29
@mmby @jungkopf @lritter @ylegall yeah, the sphere is just rotating. convert points with similar sdf values to splines, distribute points on curves to get the nice uniform distribution, animate them along the curve and rotate the sphere to make it look like its morphing
Show threadLeonard RitterMay 29
@mmby @jungkopf @aeva @ylegall yes b-spline approximation is not trivial. this is the tough part.
Show threadmmbyMay 29

@lritter @jungkopf @aeva @ylegall there is one very pointy part of an isoline where that 0 and 7 is

if you carefully watch it, the numbers don't change angle very smoothly, they discretely flip, may not be spline approximated but just linear segments that describe the isolines

Show threadLeonard RitterMay 29

@mmby @jungkopf @aeva @ylegall spanning and rectifying the b-spline itself is closed form, yes, can also just be linear, but grouping and connecting the points is not something you can do in a single pass compute shader. if it were, the isolines could indeed even be animated.

if you built a pseudo-distance field from isolines, snapped random points to the roots and had them flock together (attempt equal spacing along tangent, take same direction of travel), that could work in realtime.

Show threadYann Le GallJun 1
@jungkopf @lritter @aeva
this is correct. the isoline is just a "polyline" (series of connected segments) and I can interpolate arbitrary attributes (position, color, etc) along the curve from some parametric uvw (just u in this case).
Show threadTobias HellgrenMay 29
@ylegall Is it Ο€
Show threadMatthew DysonMay 29
@ylegall 😊
Show threadMoss (the τΡχie) <(fsm)>{{May 29
@ylegall
Are these closed graphs projections from the plane onto a sphere or are they artifacts of some in-sphere process?
Show threadYann Le GallJun 1
@Moss_the_TeXie
I didn't use projection in this one. I gave an basic break down of the approach in another comment.
Show threadBananaftMay 29
@ylegall make it a terminal emulator.
Show threadMorten Hilker-SkaaningMay 29
@ylegall beautiful
Show threadpsenoughMay 29
@ylegall pretty cool