# Tagged Questions

Geometric representations of objects in 3 dimensions. 3D-meshes are made up of a collection of triangles or other polygons, forming volumes and surfaces. They are commonly used for visual representations on computer screens.

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### How to save the Mesh from an Interactive Cloth at runtime in Unity?

At the start of a scene I have GameObject called 'sheet' positioned above a 'ball' GameObject. The sheet has an Interactive Cloth component on it and a Cloth Renderer. The Mesh for the Interactive ...
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### Rendering a distant star field in Unity using a separate camera for near stars

I'm currently working on a hobby project which is a universe simulator (exclusive to stars) built in unity3D. In order to deal with the raw scale of the universe I'm trying to implement two co-...
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187 views

### Point welding on generated terrain

I am converting two 2D images (A Voronoi graph and a Diamond Square noise map) into a 3D object. However when finding the corner points of the Voronoi I am left with gaps, so I thought to drop these ...
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### Smooth mesh from voxel grid

Im trying to implement smooth voxel grid meshing using marching cubes algorithm but I dont quite understand how to do the interpolating (I understand that this would solve the problem) to achieve the ...
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401 views

### Programmatically creating a 3d mesh in XNA

Surprise! Another question related to Minecraft. Anyways: Rather than drawing thousands of blocks each frame, I remember reading somewhere that Minecraft breaks the map into 16x16x256 chunks, and ...
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### Vertex Normals, Loading Mesh Data

My test FBX mesh is a cube. From what I surmise, it seems that the cube is on the extreme end of this issue, but I believe that the same issue would be able to occur in any mesh: Each vertex has 3 ...
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### Map video texture to a half sphere in Unity

I'm new to unity3D. and am trying to play a 360-degree video. But instead of mapping the whole 360-degree (equirectangular) video to the whole sphere, I need to map the half-video to a half-sphere ...
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### Keeping a mesh entirely at the GPU and changing its vertices there with a ComputeShader (Unity5)

In a Unity game I have an object whose mesh is made of around 10k vertices and I have to make changes to these vertices (position, color, etc) almost every frame. Considering that such object is ...
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### How Would You Animate a 3d Characters Face (With Textures)

So I'd like to do a low poly style of modeling, and one of the corners I'd like to cut is on head geometry. Specifically, making the details of the face a texture (like a Mii or a character in Animal ...
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### Exact collision detection for high-detail deformable triangular meshes

What robust methods or approaches exist for exact collision detection involving high-detail, deformable geometry? The kind of mesh I am describing is a surface that is specified as a triangulated ...
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### How to convert an octree to a polygon mesh?

So if I have dynamic voxel terrain data stored in an octree representation what would be the best way to go about converting the octree to a polygon mesh which I can render with OpenGL? A lot of ...
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### Cutting a 3D mesh with a 2D shape

I have a 2D image that i want to use to cut into a 3D mesh while leaving it closed (basically cut straight through it, and close it by generating vertices in both places it cut, front and back, to ...
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### Broken UVs for Maya/Mudbox model

I have tried using the automatic mapping in Mudbox and Maya, neither worked sufficiently, I was still experiencing polygon overlap. I tried mapping separate limbs but I came to the same problem, this ...
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### How to extract the texture from an image onto a mesh?

(preamble: I think this fits either here or SO with computer vision tag, I chose gamedev because I think you guys are probably really good with textures and meshes, but tell me if my decision was ...
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107 views

### LibGDX mesh silhouettes

How could I find out the silhouette edges of a mesh in libgdx? More specifically, how could I produce shadow volume geometry using the Mesh class of libgdx?
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297 views

### Swap limbs of a skinned mesh

If I have a model, such as a robot, I am able to swap its limb meshes out and replace them with other robot limb meshes by merely removing the limb mesh from the skeleton and attaching the new one to ...
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### How to convert HiPoly to LoPoly & Displacement map

I've got some HiPoly meshes that have come from RealFlow. Loading them as-is uses a huge amount of memory. It seems like the ideal solution would be to simplify the mesh, but I'd like to preserve the ...
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### Collapsing triangle faces of 3d meshes

I'm doing boolean subtractions on 3d meshes like described here: boolean operations on meshes The subtractions work well so far. After the subtraction, I convert the newly generated triangle vertices ...
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### How to transfer morphs from one 3d character to another?

Note: This may seem similar, but it is actually quite different to: How do I morph between meshes that have different vertex counts? I have a rigged, skinned character setup with facial blend shapes ...
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### How to prevent object from moving when it's mesh/collider is being updated?

So I a made a script that lets the player grab a vertex, move it, and then update the mesh. To help prevent the player from trying to clip it through other objects I made it so the mesh/collider is ...
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### Detecting collision between 2 convex meshes in 3D

For the past couple of weeks I've been trying to implement physics in my engine, and I am currently stuck on the collision detection phase. In short, I can perform a triangle-triangle intersection ...
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### Create custom UE4 editor viewport and display meshes?

I want to create a custom viewport (to edit UVs). I looked at SStaticMeshEditorViewport and FStaticMeshEditorViewportClient. I made a Viewport which inherits from SEditorViewport, and a ViewportClient ...
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### How to split or divide a polygon face in 3DS Max

I have previously used the Cut and Slice tools in 3DS Max. Recently I wanted to divide a selection of polygon faces into a specific number of faces. For example split each face into 2 equal halves, or ...
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### Triangle mesh - curvature

I have a triangle mesh with normals. What algorithm is considered to be "standard" with best possible quality for triangle mesh curvature computation (mean and gauss). Something like for normal ...
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74 views

### Tweening back from arbitrary 3D rotation in javascript

I'm using a 3D javascript library to rotate the vertex of a 3D object with a classic 3x3 matrix, to an arbitrary angle in the 3D space, as depicted in the image below. For example, a first ...
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### Why are my smooth curved meshes bumpy?

Reference .gif of what I'm experiencing I've been trying to create smooth surfaces for my game in Blender, mostly curved ramps. However, for some reason I can't get the ball to roll smoothly along ...
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### Color from OBJ not displayed in Blender

I want to import some .obj file that I have made with MeshLab. The point cloud file was actually in .pcd format and I used pcl_pcd2ply tools from PCL to change it into PLY-Format. Then I import it ...
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### How can you duplicat folders and not share old dependencies in Unity?

I have a folder with some prefabs, materials, textures, FBX, etc. My Prefabs refers to FBXs and Materials in this folder. Can I clone this folder in a way that it will save those local dependencies? ...