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Questions tagged [marching-cubes]

An algorithm for creating a triangular mesh from a three-dimensional scalar field, or graphing an implicit function of the form f(x,y,z) = c.

Marching cubes is a computer graphics algorithm for creating a triangular mesh from a three-dimensional scalar field, or equivalently, graphing an implicit function of the form f(x,y,z) = c.

For more information, see:

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Three.js Render not getting cleared after using ImmediateRenderObject

I am trying to mask a 3D scene with another 3D scene. I managed to get it working with regular THREE.Mesh objects as shown below: The main scene has a bunch of low poly spheres. The mask scene has a red cube. Both scenes are passed as textures to a…
imbrizi
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Error in Geometry Shader from large array

When I try to link my Geometry Shader it throws the following error: 0(76) : error C5041: cannot locate suitable resource to bind variable "triTable". Possibly large array. In reference to this array declared in the shader: const int…
Alex Coats
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Marching Cubes Issues

I've been trying to implement the marching cubes algorithm with C++ and Qt. Anyway, so far all the steps have been written, but I'm getting a really bad result. I'm looking for orientation or advices about what can be going wrong. I suspect one of…
BlastDV
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C++ Marching Cubes Algorithm Explanation

I am trying to understand how the marching cubes algorithm works. Source: http://paulbourke.net/geometry/polygonise/ What i don't understand is how do you calculate the "GRIDCELL" values. To be exact the double val[8]; part is not clear for me…
Playdome.io
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Fast volume representation, modification and polygonisation

I am looking for ideas for algorithms and data structures for representing volumetric objects. I am working on a sculpting system, like sculptrix or mudbox, and want to find a good implementation strategy. I currently have a very nice dynamic…
DaleyPaley
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What is the difference between marching cube and octree?

Is octree a special case of marching cube ?? I mean does octree use same triangulated cubes of marching cube. I know that octree is a 3d form of quadtree. I just want to know whether I am in correct direction or not. After the tree have been…
solti
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Proper density functions for Voxel-based terrains?

I've managed to implement the Marching Cubes algorithm in C#. Up to now I've tried the algorithm to render a sphere. That's an easy one because the density function is not very complex to code. But now I want to get the algorithm to go further and…
user32004
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Weird Lighting on Marching Cubes mesh in Unity3D

I'm working on an implementation of the Marching Cubes algorithm in Unity. I just implemented smooth shading to my mesh and now I'm getting some weird lighting effects. I'm new to this algorithm and I admit I don't really know what I'm doing to well…
cooldev
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Marching Cubes not rendering properly after n cycles

I have an issue where I made a marching cubes algorithm and it works perfectly, up until rendering an arbitrary cube n, where n is dependant on the dimensions of the render area, where any cube after n renders in a seemingly random location. It…
JimMcTim
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Marching Cubes Algorithm not Registering a Point's Value

I am generating a sphere with the marching cubes algorithm, the sphere is split up into chunks and whenever I try to terraform near a chunk border, instead of a bump being added to the sphere a rift forms on the chunk border breaking up the bump…
Whatever
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How to generate 3D mesh from a numpy binary mask

I did a 3D segmentation of an organ in a 3D volume of data acquired in CT. The output of the segmentation is defined as a binary 3D ndarray, where 1 is inside the organ, and 0 is outside the organ. What is the best tool to extract the surface of…
BayesianMonk
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Read and index data from .raw volume file with Java

I am working with volume data in raw format. I think that it is basically a 3D matrix of voxels that I want to load into a 3D array. I have no experience with this, and I’m unable to find much information on how it is done. My main problem is that I…
Anna Scognamiglio
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one int variable works as an array index but another one doesn't

I'm working on a marching cube compute shader in unity at some point i need to find an index so that i can make vertices by connecting those edges here is the code uint cubeIndex = 0; for (int i = 0; i < 8; i++) { if (cube[i].isInside == 1) …
alireza karampoor
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Sorting of vertices after intersection of 3d isosurface with plane

Here is another geometric problem: I have created an 3-dimensional triangulated iso-surface of a point cloud using the marching cubes algorithm. Then I intersect this iso-surface with a plane and get a number of line segments that represent the…
stef
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Marching cubes not creating expected meshes

I have been trying to implement marching cubes in unity with c# but the meshes that are being created all have a rotation that is off by 90 degrees. in this example I am trying to create a cube. this is my current code that I have if any one can…
Paradox
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