Game Development Stack Exchange
Game Development Stack Exchange

Questions tagged [3d]

3D refers to three dimensional space where coordinates are represented with X, Y and Z values.

Questions using this tag should be about 3D math, design or graphics problems.

2021 questions
29
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4 answers

How can I implement pre-rendered 2D sprites that can face any direction?

I've been Googling how games like Clash of Clans render their troops, and it appears they are pre-rendering 3D models to 2D sprite sheets before runtime, and rendering those 2d images at runtime. However, troops in Clash of Clans can face any…
Kyle Lin
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16
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3 answers

Can the solar system be accurately represented in 3d space using doubles (or longs)?

I would like know to how to best manage coordinates in a 3D game whose aim is to realistically model the entire solar system, yet be able to handle the smallest movements in a "ship" (ie: perhaps we can consider 1cm to be the smallest acceptable…
Nicholas Hill
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15
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2 answers

Why did the old 3D games have "jittery" graphics?

I've been playing "MediEvil", lately, and it got me wondering: what causes some of the old 3D games to have "flowing" graphics, when moving? It's present in games like "Final Fantasy VII", "MediEvil", and I remember "Dungeon Keeper 2" having the…
dreta
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13
votes
5 answers

Pro's and Con's of Various 3D Game Engines

I normally code my admittedly simple games by hand in either Assembly or C but I'm looking to go a little more high level. I also want to build more modern skills so I'm looking at UDK. What are the pro's and cons of it for indie 3D development. I…
Jeff
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9
votes
2 answers

How to draw a 3D world with lines, more like a sketch drawing or cartoon

Consider making an ink drawing, with no shading and all lines having equal weight - such as you see in a strip comic like Dilbert. This represents an active 3 dimensional world, but objects do not have textures, yet you don't see tessellated…
cheerless bog
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7
votes
3 answers

Pre-render 3D object from multiple angles, save as PNG

I'm looking for a tool or script that takes a 3D object (any format) and makes multiple renders of it automatically (using a raytracer or other high-quality offline renderer). It would then save the output as a series of PNG files. Example: let me…
Tomas Andrle
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7
votes
5 answers

What is the simplest 3D file format to parse?

I want to parse Blender-Made Files directly into my homemade Lisp program. I've been pulling data out of .X3D files manually. Is this the best format to focus on writing a parser for? Thanks!
WarWeasle
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5
votes
6 answers

Why doesn't it seem to be any development in the field of 3D VR gear, especially with regard to gaming?

I remember that way back around 1995, there was this big craze with VR in the media, a whole bunch of (mostly mediocre) games labeled as "virtual-reality-interactive-movie (...)" were published. If I recall correctly, the first 3D VR helmet was…
neuviemeporte
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5
votes
3 answers

fast 3d point -> cuboid volume intersection test

Im trying to test whether a point lies within a 3d volume defined by 8 points. I know I can use the plane equation to check that the signed distance is always -1 for all 6 sides, but does anyone know of a faster way or could point me to some code? I…
aadster
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5
votes
1 answer

Calculating a child object's Position, Rotation and Scale values?

I am making my own game editor, but have encountered the following problem: I have two objects, A and B. A's initial values: Position: (3,3,3), Rotation: (45,10,0), Scale(1,2,2.5) B's initial values: Position: (1,1,1), Rotation: (10,34,18),…
Sergio Plascencia
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5
votes
2 answers

Are these non-standard applications of rendering practical in games?

I've recently got into 3D and I came up with a few different "tricky" rendering techniques. Unfortunately I don't have the time to work on this myself, but I'd like to know if these are known methods and if they can be used in practice. Hybrid…
maul
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4
votes
4 answers

How does 3D games work so fluent provided that each mesh's size is so big?

I'm surprised to find that each mesh takes at least 5-6 MB, how can a 3D game be so fluent when there are hundreds of models? I'm expecting it will simply go out of memory or something else that makes the game un-playable.. What's the trick employed…
gamelearner
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4
votes
2 answers

Help to understand positive rotation direction on left/right handed cord spaces

I began to study 3D math and noticed about left/right handed cord spaces and clockwise/counterclockwise rules. I understand that left-handed use clockwise positive rotation and right-handed counterclockwise. But what i don't understand is way this…
max333
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4
votes
3 answers

AR app: Mapping 3D object to 2D plane?

I'm trying to create an Augmented Reality app. I'm using OpenCV to get 4 points from a checkerboard pattern that represent the four corners of the pattern. This should be used to create a plane in my app, but the points are in 2D. Anyone here have…
Joey Green
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4
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8 answers

Where to start? (3D Modeling)

I'm looking for a good resource to start learning 3d modeling. I'm looking for something that starts with the basics (e.g. terminology; what are quads, triangles etc.) before/while going into the actual modeling. Book, website, video, anything will…
herfus
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