Stack Overflow
Stack Overflow

Questions tagged [voxel]

A voxel (volumetric pixel) is a volume element, representing a value on a regular grid in three dimensional space.

Wikipedia, Voxel

434 questions
0
votes
0 answers

Smooth Lower Resolution Voxel Noise

After reading the blog post at n0tch.tumblr.com/post/4231184692/terrain-generation-part-1. I was interested in Notch's solution by sampling at lower resolutions. I implemented this solution in my engine, but instantly noticed he didn't go into…
Quigly
  • 1
0
votes
2 answers

Repacking voxel data for efficient storage

I've got 3D voxel data, and I want to re-package it for memory efficiency and fast access. The data is generated in a regular octree, one integer value per cell. Unfortunately the data is not sparse, but the cells with the same value should be…
user1387
  • 187
  • 10
0
votes
1 answer

OpenGL point array

I need to draw voxels using a float array like this: { v1.x, v1.y, v1.z, v1.size, v2.x, [...] } which in my case, for testing purposes looks like this: { -0.6f, -0.4f, -0.0f, 1, 0.6f, -0.4f, -0.0f, 1, 0.f, 0.6f, -0.0f, 1, } How do I load those up…
l'arbre
  • 719
  • 2
  • 10
  • 29
0
votes
1 answer

Tremendous lag while rendering LIBGDX voxel engine

I managed to make myself a basic voxel engine that uses Perlin Noise to generate a array of models. Everything has gone well, but as soon as I turn the world size up to 200x200 blocks I get HUGE lag. I believe this is happening because I am…
ThatPixelCherry
  • 323
  • 1
  • 4
  • 17
0
votes
1 answer

Is there a way to use a single input value in Opengl using vbo and not uniform?

I'm not sure that my question is clear enough so here the explanations : I'm working on a voxel engine using opengl, it's working fine but I want to improve it a bit with some optimisations. I started to use VBO for the vertices of the cube, I earn…
Rahotop
  • 35
  • 3
0
votes
1 answer

Unity3D - Voxel Mesh - Wrong side rendering (C# code)

I am currently working on voxel game (not another copy of Minecraft) but i have problem with rendering. Image 1+2 (I don't have sufficient reputation to post images and more then 2 links) I draw red line (by hand) where i think is edge because I…
AbitDeveloper
  • 94
  • 9
0
votes
0 answers

(OOP) (C++) Synchronizing data structures in a modular program

Please bear with me in this rather long question. I am currently building a voxel engine (nothing like Minecraft, don't worry). I want the engine to be modular. For example, I want the voxel 'engine' to be a seperate component to the 'renderer'. The…
Barry Smith
  • 281
  • 1
  • 4
  • 16
0
votes
2 answers

Hashing integer coordinates of different sizes

I'm trying to hash some 3D coordinates to a 16-bit integer. The coordinates have the following constraints: x [0, 16] y [0,256] z [0, 16] Is it possible to get O(1) access, zero collisions, and still fit it in a 16-bit word? My thought was to shift…
perryperry
  • 33
  • 10
0
votes
0 answers

How to extract coordinates of voxels/how to discretise a 3d object?

I want to do some maths (translation, rotation, etc) with 3d objects which interact. At the moment, I have VRML, X3d, Maya and .jvxl versions of a 3d structure. I can visualize them just fine but I want to store these files as coordinates from a…
Franz
  • 191
  • 4
0
votes
0 answers

3D grid generation for voxel world: data structure and voxelization

I have to implement a path-finding algorithm in a complex 3D environment. My input is a CATIA model which can be exported as stl or stp. After some research, I reckon my best option is to apply A* Path-finding to a voxelised world. I am coding in…
Nic
  • 1,262
  • 2
  • 22
  • 42
0
votes
1 answer

Converting 2D projection rotation angles to 3D object

I am projecting a 3D matrix of density values into 3 2D planes (ZX,ZY,XY). I then rotate each projection by 3 different angles: Pzx, Pzy, Pxy using the rotation matrix below: How do I convert these 3 separate angles so that I can apply them to a 3D…
Jamie Stuart Robin Parsons
  • 1,132
  • 4
  • 20
  • 36
0
votes
0 answers

OpenGL - Generate plane from normal vector

I am trying to make the generation of voxel/cubes more efficient. First of all I calculate on the cpu which faces are not hidden by other voxels/cubes. Than I send the voxel/cube position and the face normal to the gpu / the vertex, geometry and…
Michael Buschmann
  • 213
  • 3
  • 11
0
votes
0 answers

OpenGL shader implementing Phong model on voxel image

I have a 3D image just defined by its voxels. This image is a grey-scale image. I need to render it in false colors. The idea is to write shader implementing something like the Phong model. On Internet I found different shaders. But all of them use…
user1235648
0
votes
1 answer

Voxel game: rendering blocks different ways and perfomance

I'm making a Minecraft like game using OpenGL and I wonder, what is the best solution to make a flexible rendering without perfomance loss. I mean there are different types of blocks with different ways of drawing: usual blocks are just simple cubes…
Pavel Rudko
  • 248
  • 2
  • 8
0
votes
1 answer

Representing Voxel in different Formats

I am new to Graphics. Can someone tell me how do I represent a Voxel with different formats (eg. Rectilinear Grid)
user4479371
1 2 3
…
28 29