SDF (signed distance function)

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SDF (signed distance function)

Рет қаралды 6,902

CGMatter

Күн бұрын

an introduction to signed distance functions
📁 ➟ www.b3d.tools
🌐 ➟ www.cgmatter.com

Пікірлер: 41

@DeGrey 4 ай бұрын

Math is beutiful. Thanks for sharing your knowledge and hard work.

@oodoodoopoopoo 4 ай бұрын

This video is so well done. The visuals were not only spot-on accurate but they were also visually pleasing. The learning path was well laid out with a sensible buildup and unfolding of foundational information leading to the big picture destination. I find myself looking back on the journey as if it were a well-paved road versus the viny machete struggle that it typically takes for me to get somewhere. Thank you. If you don't already know this by now, you are a natural teacher 👍

@zakharovmedia 4 ай бұрын

incredible visualisation!

@pcy113 4 ай бұрын

The comments are back !🔥

@vivek_02512 4 ай бұрын

why does he disable them? i dont get it

@JustForNowStudios 4 ай бұрын

Please continue making these math videos and showing how they pertain to 3D! 😊

@UnsavedTrash 4 ай бұрын

glad to see the comments back, been kinda missing out on the videos for a while mostly because its a shame not being able to see discussion around the interesting things you cover or show off.

@MysteryPancake 4 ай бұрын

I recommend using Open Shader Language to work with SDFs in Blender, it's very fast now with GPU acceleration and much cleaner than using the built in nodes :)

@sicfxmusic 4 ай бұрын

The CG in CGMatter stands for Calculus & Geometry🙏🙏

@RenderRides 4 ай бұрын

You did such a great job explaining this- thank you! 🙇

@JorgeSanchez-wl5eq 4 ай бұрын

I was looking for this explanation, thank you!

@zsigmondforianszabo4698 3 ай бұрын

everyone's gansta until the uv swatiska comes in 7:08

@phugoidoscillations 3 ай бұрын

You might enjoy plotting geodesics on surfaces, I know I'd probably enjoy you covering the topic.

@dylanmercergo7853 2 ай бұрын

I am very scared, but fascinated!

@ClassicalContrarian Ай бұрын

CoolestGrayMatter in your 🧠, bro! 👊😎

@martinmiranda718 Ай бұрын

This is fantastic

@neyhden 2 ай бұрын

3:27 thats wrong tho, if you take the minimum of the two it will always give you the one of the line

@PiotrekPomorski 4 ай бұрын

Splendid work! Checking that website out immediately

@Igoreshkin 4 ай бұрын

I don't know how to use this knowledge but thank you for effort

@phuxv 14 күн бұрын

the SDFs are no longer available:(

@seresproductora 4 ай бұрын

Can you try to create chiseled text. Pleaseee. You are the only one who can do it properly

@machineman8920 4 ай бұрын

Was Manim involved in the making of this video? The animations are incredibly clean.

@waffentrager_auf_e100 4 ай бұрын

7:08 sus

@sScorpioNn1 4 ай бұрын

it's 2D ray marching

@LakiLOOP 4 ай бұрын

Oooh come on, show some love/nodes

@goliathprojects7354 4 ай бұрын

And I thought it means Same Deutz-Fahr

@user-wr2uy9pj4m 4 ай бұрын

Is it related in any way to BSDF?

@slimeball3209 4 ай бұрын

no, bsdf stands for scattering distribution

@user-wr2uy9pj4m 4 ай бұрын

@@slimeball3209 ah, got it, thanks!

@Slickstaff_Stainpants 4 ай бұрын

okay. i now know what it is... but what is it used for ?

@chimpana 4 ай бұрын

It's pretty obvious isn't it? It's a way of mathematically modelling geometry.

@satibel 4 ай бұрын

There's a bunch, off of the top of my head, you can use point to object collision (if sdf is ≤0, your point is inside) lighting, you have the distance to the light emitting object, so you can fairly easily compute light using sdf ray marching, basically you can step along your ray by the amount of the sdf, because you know the next collision is at least that far away. Godot has SDFGI for global illumination. (Also See Alexander sannikov's radiance cascades, which is a different system for global illumination) You can use it for things like fur. And as shown, CSG (intersections and such) is a big use. You might be able to use CSG for object to object collision if you use the SDF for each object.