Questions tagged [mesh]
A collection of vertices, edges and faces that defines the shape of objects
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Sphere rolling shader like ice cream
now I can make cylinder shape with shader. But what I want to do is like picking up ice cream with an ice cream scoop. How can I do this?
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Does mesh contain a color?
I'm developing a simple 3D engine for education purposes.
I'm wondering whether a mesh contains a color of each vertex?
Because I saw somewhere that mesh does not contain a color at all. If so, then ...
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Mesh appearing 'see-through' when exporting from Blender to UE4 [duplicate]
The right wing of the dragon model is appearing see-through upon exporting, anything to double check for solutions?
Thanks
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Rotating mesh on lineRenderer to make mesh appear flat
im working on a custom tool in Unity that allows me to draw roads in a similar way as City Skylines. I spawn 2 points on a plane and draw between them adding points on the endpoint to create a chain ...
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How to generate mesh for any shape?
I have shape stored in sprite. Shape is stored as white color. I want to generate mesh for given shape. Maybe just like sprite collider do. What algorithm I have to choose? Are there any libs for ...
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Generating UVs for an annular sector/ wedge-shaped procedural mesh
I am using code to generate a mesh to show the firing arcs for a tabletop-style game I am working on. But when applying a material to it, I only get a solid color.
Here you can see the custom mesh ...
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My First Person Player Capsule Is Always About 6 inches Under The Floor
Here is the problem. This is the exterior of the hallway in which my player capsule is standing. Notice the bottom of the capsule poking through the floor.
This is the interior of the hallway, notice ...
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Runtime Mesh Simplification (Decimation) in Unity
I'm trying to runtime decimate a mesh in Unity. (Open to new methods other than the repo I found.)
Currently trying to get this to work https://github.com/Whinarn/UnityMeshSimplifier/
As a sanity ...
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UE4: How to make UProceduralMeshComponent a solid body, not just a surface around volume?
I generated the UProceduralMeshComponent and set collision enabled to ECollisionEnabled::QueryOnly.
But I get ActorEndOverlapEvent if I stop touching the mesh border even if I still inside of mesh ...
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Outline Mesh Unity 2D
I have a procedurally generated mesh in Unity and I was hoping to outline the edges of it. I've got a small shader for an outline but instead of it working around the edge the mesh ends up filled with ...
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How to make a code-generated mesh interact with a rigidbody?
I'm using a sphere and an empty game object that generates a mesh upon playing/starting.
On the mesh, I place a Mesh Collider component with ...
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Blender loop cut over multiple objects
I have a following object in scene which consists of multiple faces (the orange selected ones). As you can see from the scene collection tool it's actually multiple objects selected at once.
I would ...
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Given a 3D grid-based map system, how to find the middle point of an edge of the mesh of a tile on the grid
I have a grid-based map system. The grid is aligned to the X and Z axes. The tiles on said map are 3-dimensional, but flat, and can be located anywhere on the Y-axis.
If I need to get a Vector3 of ...
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Unity - Creating a plane that you can deform on runtime creating a path
So I'm doing this project which is similar to Castle Raid (https://youtu.be/ZiAv1smyCKM) And I'm having trouble implementing the path creation by deforming a mesh and making the players move on it. I ...
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How to simplify a 2D mesh with messed up topology while keeping as much of the shape as possible and as efficiently as possible?
I'm trying to figure out a way to simplify any 2D mesh during runtime in Unity with broken up topology so that it will have more uniform topology and retain as much of its original shape as possible.
...
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Having trouble implementing edge collapse operation with half-edge data structure
I'm trying to make a half-edge data structure to interact with meshes in 2D space in Unity but I'm having trouble with implementing an edge collapse operation that merges one vertex into its twin half-...
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What is the most efficient way to keep a vertex contained within a network of edges/vertices?
Given this picture, I want to move or displace the red vertex but I don't want it to pass the orange edge boundaries or the blue vertices. I either want to stop the red vertex when it gets close ...
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Splitting the mesh of a plane into submeshes
I am struggling a bit with this. I am trying to split a plane recursively into subplanes, so that frustum culling is more efficient. I am doing that by dividing the indices into the 4 subplanes for ...
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How to project 3D meshes onto a 2D plane producing a 2D polygon silhouette?
I would like to project a number of separate 3D meshes onto a 2D plane and create a 2D polygon representing the outline of all the meshes. I would also like to to create multiple 2D polygons if the ...
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How do I distinguish if parts of a mesh are together or separate/disconnected?
Let's say I have a GameObject that has a MeshFilter with this mesh data.
These shapes are generated at runtime and all considered 1 mesh under the MeshFilter. What I want to do is separate the two, ...
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Problem detecting outer edges properly when deforming mesh dynamically
I've been using this edge code (https://answers.unity.com/questions/1019436/get-outeredge-vertices-c.html) for detecting outer edges.
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How do I cut mesh partially with EzySlice?
I'm using the EzySlice framework to cut meshes (https://github.com/DavidArayan/ezy-slice).
So far it can cut a mesh but infinitely but I want to be able to cut partially like this:
As you see in the ...
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why does my mesh render on top of UI?
I've got some UI elements and a 3D mesh imported from blender. I've tried stuff like sorting layers, so that I render my 3D mesh below a canvas UI element(side panel), for which I put my 3D mesh ...
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How can I create a custom size plane without scaling in Unity by code?
I'm planning create a plane with the size like 16x1x16, however, I wanna the scale of it is always 1x1x1. I found something useful information Unity change size of cube mesh. It aims to a cube mesh, ...
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Changing block shape to blend with adjacent blocks
I am in the process of programming a Minecraft like game in Unity. I am currently implementing the block mechanics.
My goal is that when a block is placed, it has an effect on its neighboring blocks ...
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gl.drawArrays() not rendering whole mesh
I have a mesh that is generated using the marching cubes algorithm that is drawn using gl.drawArrays(), however the whole mesh isn't rendered, only part of it. I checked if the count I was specifiying ...
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Performant way to generate a cylindrical mesh along a dynamic spline
I am working on a mobile game, in which I am tiling a cylindrical mesh along a dynamic spline. The points of the spline are changing each frame, so the vertex positions and normals of the tiled mesh ...
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Why instantiated Static Mesh gets scaled in Unreal Engine 4? [closed]
Building a project in Unreal Engine 4.26 while trying to increase performance of the videogame I ended up using instances of static meshes where possible. This generated an issue:
My instantiated ...
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How to map texture pixels to the corresponding 3D positions?
I have a mesh stored in .obj format with a texture image in .png format. For any "defined" pixel in the texture image, I'd like to compute the corresponding 3D coordinates when the texture ...
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Improve cube rendering performance in lwjgl
I've been coding a minecraft-like game in lwjgl using cubes. I've reached a point where I can render 6 chunks of blocks before it starts lagging.
I've searched online for optimizations and one of the ...
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How can I create a good physics colliders for these models in Unity3D
I need to make a 3D colliders in Unity with those forms. I don't want to use any Asset Store asset if it's possible.
There are two models: both are cylinders but they have some deformations (see image ...
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filter camera output by mesh
(skip to edit for the actual problem)
I have a simple plane mesh generated via script (has arbitrary shape).
I want the shader to discard (set to black) all pixels that aren't passing through that ...
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Unity 3D - CSG / Geomodding meshes runtime
Although I'm not very advanced in Unity, I've been looking into CSG/boolean mesh deformation to see what's possible. I want to break a hole in basic wall meshes at the point the player clicks on, ...
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How to make a custom 3d view cone that mixes orthographic and perspective cameras
I'm trying to make a camera that displays objects the same height no matter the distance, but still changes width relative to distance. Similar to having an orthographic view vertically and a ...
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How to ensure Unity does not rearrange the sub-meshes of a mesh on import?
having a bit of a head scratcher problem here. I have my artist's making multiple unique meshes in Maya that contain 3 materials. Each material is assigned to a sub-mesh in a specific order. This ...
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How do I play multiple animations at once with an MonoGame skinned mesh?
I am working with the SkinnedMesh from this tutorial.
I am at the point where I want to let my character run (which already works), but when I press the punch key on my keyboard, I only want the upper ...
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How can I achieve this "stroked lines" effect?
I have a collection of arbitrary vertices and edges that are connected, but which do not necessarily form triangles. These vertices and edges mostly fall along a flat plane, but have some height ...
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Procedurally generated mesh makes weird shapes
I'm developping a procedural terrain generator in Unity 2020.3, using Sebastian Lague's tutorials and knowledge i've gathered through college projects.
The heightmap looks just fine, and i had no ...
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How can I calculate the inertia tensor of a hollow object defined by a triangle mesh?
I want to calculate the mass, center of mass, and inertia tensor of player created objects. Some of the objects will be hollow instead of solid. I am creating a closed triangle mesh for their object. ...
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How to optimize Floor Meshes with different material in unity
I have several meshes (floor tiles) that consist of unique materials as they have different textures. I see that it is taking too many batches and it has around 100m vertexes.
Is there any way to ...
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Dynamic UI Canvas on Mesh
I have dynamically generated images in WorldSpace Canvas and I need to put them somehow on shield that crashes. Is it possible tu put that canvas on mesh shader texture or render it on texture?
How ...
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How mesh transformation works under the hood
We can look at the most popular engines like Unity and Unreal engine (maybe Godot and other).
As far as I understand (at least I would do this), we store the original mesh, and then for every change (...
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Can you help me resolve a bug in mesh collision code?
I have entities which walk along a 3D mesh. I move the units along their x,z axis, and every frame I update their y-position according to the quad or triangle they are standing on, using Barycentric ...
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Set object rotation according to the outer vertex in unity
I am able to get the outer vertices of a mesh using this and able to generate cubes on outer edges of the mesh. Here is my code:
...
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Attempting to remove extra "edges" from truncated icosahedron lead to excessively global concequences
I need a truncated icosahedron. Blender lets me do that with add -> mesh -> math function -> regular solid (assuming the extra plugin is installed.) So far so good. However, the mesh that ...
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How do you have the clothing mesh hide the body mesh underneath?
How do you have the clothing mesh hide the body mesh underneath, to prevent odd patches of body from sticking out in tighter modular clothing?
Is there some sort of shader trick that can have the ...
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Create Mesh in gap between tiles (in Unity3D)
I am loading two kinds of tiles (meshes in tile format) in Unity, both are placed in the environment correctly but there is a gap between these two tiles (see the picture below).
I want to fill this ...
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How to create fallout intensity on a generated mesh in Unity?
So I was able to generate a circle mesh in Unity to basically see the other characters when they are inside of it, and hide the characters when they are outside of it, and partially hide and show the ...
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Unexpected result when generating world with 2 perlin noises
I try to generate a world with a temperature and an humidity noise to generate biome based on the y values of the two. I take the y values and round them on a 33 base for the humidity and 25 for the ...
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Building meshes conforming to terrain deformation
I have an uneven terrain on which the player is supposed to build buildings. For most structures I can just fudge the foundations, have them extend through the terrain.
For roads, pipes, tracks and ...
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