Questions tagged [binary-space-partitioning]

Binary space partitioning is a technique used to subdivide a euclidean space into smaller, convex sets. Partitioning is achieved recursively using hyperplanes. A binary tree, called the BSP tree, is used to represent such partitioning.

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UDK: BSP from Brush-CSG Add cannot be deleted

Once a BSP has been created using Brush-CSG add it cannot be deleted. Del-DELETE from the keyboard yields no effect. Right click-cut yields no effect. Is there another way?
atlantian wizard's user avatar
1 vote
0 answers
74 views

3D Binary Space Partitioning with solid/empty leaves

I've recently started looking into BSPs for real-time collision detection, and I'm now looking into improving the performance of my solution. The system that I've implemented is rather similar to the ...
Lolslayer's user avatar
1 vote
2 answers
156 views

Binary space partitioning with floor as an object

I have a conceptual problem. The problems comes with the floor I'm rendering and the count of objects. The idea was to reduce rendering with BSP implementation, but the problem that I hit was that the ...
Marko Bencik's user avatar
3 votes
1 answer
260 views

Fixing T-Junction artifacts in a BSP Editor

I'm starting a little BSP engine, and have begun implementing Brush CSG. Currently I represent my brushes as the enclosed volume of surface planes (like old idTech 3 maps), with a cache for each face ...
mseddon's user avatar
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2 votes
1 answer
958 views

libGDX 3D rendering

I'm currently working on a FPS 3D game using libGDX. I aim to have maze-like levels (like the original Doom and Duke Nukem 3D) so I'm making a level editor with a top-down view and lets you stretch ...
Gad Wissberg's user avatar
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1 answer
40 views

Having trouble with btGeometryUtil::isPointInsidePlanes

I'm in the process of parsing a BSP file to create btConvexHullShape objects for each brush. I've seen a few examples of how to do this on Github and they all use the getVerticesFromPlaneEquations ...
Tom Sweeney's user avatar
1 vote
0 answers
382 views

Using binary space partition to lay out scenes in game

Q: How can I randomly lay out these house scenes in the larger scene such that they don't overlap? I'm using the Godot Engine to create a little 2D RPG kind of game. I'm laying out a village in a ...
Ertain's user avatar
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0 votes
1 answer
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Lightmaps from RTCW BSP file not being rendered correctly

I'm trying to recreate a Return To Castle Wolfenstein renderer using Direct3D 11, but I can't seem to be able to render the lightmaps as they should be. I have not found much information on the ...
Hermetix's user avatar
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1 vote
0 answers
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Missing faces in Quake 3 BSP [closed]

I'm attempting to write a level viewer for Quake 3 levels (repo here). I've got some of the way towards it, but for every level I try to view with it I get lots of missing faces. (image from Dustbowl)...
nonsince's user avatar
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1 answer
429 views

Why are my brushes see-through in Hammer/CS:GO?

I'm making a map for Counter Strike: Global Offensive, but I am having this issue with a part of the map. One of my brushes is weird and see-through in game. I have no clue what is causing it or how ...
isaac tschampl's user avatar
2 votes
0 answers
2k views

Binary Space Partitioning of 3d Triangle Mesh (for finding nearest points)

I'm writing a Binary Space Partitioning (BSP) tree for the purpose of optimizing finding the nearest point on the surface of a 3d triangle mesh with respect to another point. I'm currently following a ...
Erik's user avatar
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1 answer
317 views

How do I load BSP files in Android?

I understand that Opengl directly cannot load BSP files. How would I go about loading them into my Android game?
sonu thomas's user avatar
2 votes
1 answer
468 views

About Octrees Usage

I'm studying about Octrees since I've read they're used to organize my elements in space, but I couldn't find any practical example so I'm kinda lost as to their use. From what I could understand, I'...
Danicco's user avatar
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1 answer
708 views

3D BSP rendering for maps made in 2d platform style

I wish to render a 3D map which is always seen from top, camera is in sky and always looking at earth. Sample of a floor layout: I don't think I need complex structures like BSP trees to render them. ...
Dev Joy's user avatar
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1 answer
2k views

Level/Map file creation and processing with OpenGL

How do levels/maps work in the game development world? Counter strike, which is a popular FPS that uses OpenGL as it's graphics library, has it's levels/maps created as *.bsp files. How do you create ...
Lovetotem's user avatar
3 votes
0 answers
577 views

Legality, implementation, and viability of using the BSP map format in a procedurally generated XNA game? [closed]

First off, this is not a "which technology should I use" type of question, but rather a question about the viability (And legality, and how to implement) BSP maps into an XNA game. The legality part -...
Jon's user avatar
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1 vote
1 answer
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Books that discuss practical rendering techniques? [closed]

I'm looking for some books that discuss practical rendering topics like say rendering a bsp level or md2/3 mode, making a little quake like game as the goal or something to that effect. Any ...
Aleksandras Coldberg Ševčenko's user avatar
5 votes
3 answers
4k views

Scene graphs and spatial partitioning structures: What do you really need?

I've been fiddling with 2D games for awhile and I'm trying to go into 3D game development. I thought I should get my basics right first. From what I read scene graphs hold your game objects/entities ...
tapirath's user avatar
2 votes
1 answer
498 views

A* and Space partitioning

I'm planning on implementing A* in my game for pathfinding, I understand the basics of how the algorithm works but I was wondering, other than finding the start and end nodes Are there any benefits to ...
Tangeleno's user avatar
1 vote
2 answers
781 views

How can I create a lighting engine for BSP geometry in OpenGL? [duplicate]

I am trying to figure out the best way to go about creating a lighting engine for an old game format with BSP based geometry. I have all the relevant information about the light, R/G/B/brightness/...
Satchmo Brown's user avatar
8 votes
2 answers
1k views

Need advice for 3D BSP based graphics engine [closed]

I have coded myself a OpenGL BSP viewer for an old game format. It is very similar to the Quake 3 file format. Because my interest is developing graphics engines, I want to be developing while looking ...
Satchmo Brown's user avatar
2 votes
2 answers
258 views

Help computing visibility in old 3d game format

I am trying to compute visibility in an old 3d file format. I am using a BSP tree have finally gotten everything built and traversable. Now I don't have any sort of PVS, potentially visible set to ...
Pladnius Brooks's user avatar
5 votes
2 answers
942 views

Engine with Terrain and Indoor Areas (BSP-like)

I'm not really a graphics programmer, but I used to toy around with Truevision3D 6.5 a few years ago. It wasn't too bad, but TV3D was just going nowhere so my foray into 3d game dev ended there. I ...
raine's user avatar
  • 546
11 votes
2 answers
1k views

Half-Life 2 BSP Lightmaps

I'm writing a BSP viewer for a university project. So far I have the main geometry loaded properly, and the PVS working. Now I'm trying to apply the lightmaps, but I can't seem to get the texture ...
terryhau's user avatar
  • 237
6 votes
1 answer
3k views

How are potentially visible sets (PVS) determined in state of the art games?

As I understand it, potentially visible sets (PVS) are used to determine 2 things; 1. which objects are inside the camera's view volume 2. which objects are not occluded (hidden) from the camera's ...
Ken's user avatar
  • 6,096
19 votes
2 answers
12k views

What's the state of the art in Space Partitioning for games? [closed]

I know about BSP trees, Octrees and Portal that where used for a long time. But modern games still use this systems or they are using new things? If it's possible with pros and cons, considering ...
hiena's user avatar
  • 379