Coding Adventure: Marching Cubes

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Recommends KdotJPG · 2020-02 · Stack Overflow · on “Is there a built in way of efficiently finding if a vector is in a vector array and if so what # variable it is”

If you're using a triangulation lookup table based implementation of marching cubes, you could store a normal vector alongside the face in the same table entry. A video by Sebastian Lague mentions using such a table. I'm not exactly sure where he downloaded it from, but he includes it in his repo which is MIT licensed. Video [this video] , Table [LINK] (EDIT: The order of a triangle's vertices alone may be sufficient to define its direction, and you may not need an explicit normal vector) Also heads up: Old Perlin noise tends to be visibly grid aligned. Most times I see it used, appear to be because a library provided it or because it was mentioned in a tutorial, and not because it was actually t

Recommends CosmicGiant · 2020-03 · Stack Overflow · on “Alternatives for updating mesh collider in runtime?”

A voxel-based solution is the answer here, clearly. As for how to implement one, I can't give you details because, although I know what the answer is in general, I have never implemented a Voxel engine myself, and neither have I used any existing one. So I can only point you in the right direction. Basically, instead of trying to create the mesh from arbitrary points, you create it from fixed, finite, easily-optimizable ones. It's how Minecraft, and even more complex games, do it. Sebastian Lague has a video covering some of the core stuff related to the mesh-generation in this video [this video] .

Recommends TEEBQNE · 2021-04 · Stack Overflow · on “Building/placing objects system in unity”

But as I mentioned, there are a lot of better resources now that help ease the information in a more digestible way. Instead of reading papers you can watch videos [this video] . I would just start watching videos about the subject and the YouTube algorithm should start recommending more videos to you.

Recommends Cadeyrn · 2022-07 · Stack Overflow · on “How to establish a 3D model with a 3D array with grayscale values? [python]”

You can use the marching cubes algorithm ( here [this video] is a good video explaining it), and the python stl library [LINK] to create an usable file.

Cites Soupman59 · 2020-02 · Stack Overflow · on “Mesh not changing programily”

So I am trying to create my own version of Sebastian Lauge's marching cubes coding adventures ( [this video] ) and I have a script that generates perlin noise into terrain on the Y-axis ant Im trying to make it so it creates perlin noise for the x, y, and z axis and compile vertices from that perlin noise into a mesh. Rightnow I'm in the process of adding the code to decides which points should be put into the mesh The problem is that I have to change the variable y in lines 49 - 56 to the variable ypn (declared on line 45) and leave the y variables out of that area alone the problem is that if i change one of those y variables (don't know which one) it will make the mesh flat and that's not what

Cites Codeman · 2022-10 · Stack Overflow · on “Uniformly sampling points in a cube using a coordinate system [C#, Unity]”

I have a cube with six vertices of form (x, y, z) , in a 3D coordinate system. All information about cube is available, including vertices, edge lengths, etc. I would like an efficient way to uniformly return n ^ 3 points, with n points on each edge, something like the coordinate system itself. An image is attached (ignore the colouring) (source: Sebastian Lague's video on marching cubes [this video] ): [LINK] I've more or less been able to implement this in Python, and I'd like a C# version. An example of what I want: I've used a unit cube at the origin as an example, what I'm after is pseudocode or logic that works for any cube at any coordinates. More information: I'd like to have code that wo