Refers to games or art assets built in a three-dimensional space, where all positions have X, Y and Z coordinates.

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2answers
747 views

Recommended 3D camera settings and model sizes for an FPS

I'm making a simple FPS and I can't decide on the size of my models and my camera settings. Could someone please recommend a good combination of: camera field of view near and far planes model ...
5
votes
1answer
144 views

What direction is forward when the rotation is (0, 0, 0)?

I'm representing the rotations of my actors (or gameobjects) with euler angles (one float for each axis). And I've always considered the vector (1,0,0) (x,y,z) to be the actor's direction if all ...
5
votes
2answers
1k views

How do collision meshes work in games like Zelda on the N64?

I was recently reading about the technology of Ocarina of Time/Majoras Mask and discovered that world collision is done using a single triangle mesh (vertices, normals, etc) for an entire area. There ...
5
votes
2answers
3k views

3D terrain map with Hexagon Grids

I'm working on a hobby project (I'm a web/backend developer by day) and I want to create a 3D Tile (terrain) engine. I'm using XNA, but I can use MonoGame, OpenGL, or straight DirectX, so the answer ...
5
votes
2answers
612 views

Linux OgreXML model viewer

Is there an OgreXML model viewer for Linux? I know about OgreMax but apparently that's Windows only.
5
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1answer
211 views

Self colliding cloth physics

I've previously simulated cloth using Verlet integration but couldn't successfully get the cloth to collide with itself in an efficient way. The reason being is because I used a brute force algorithm ...
5
votes
2answers
349 views

Plotting entities on a radar

I'm trying to build a radar system like the one in the original X-Wing games. The way it works is that there are two circular radar systems, one for behind the ship, and one for infront. So, I've ...
5
votes
2answers
195 views

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 ...
5
votes
2answers
535 views

How to draw efficiently large number of objects with alpha blending?

In a 3D game i have large no. of trees with alpha value. What is the efficient way to draw all? What i tried is Taking every tree as a object and draw according to its z value and using billboarding. ...
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votes
1answer
6k views

OpenGL ES 2.0: Understanding Perspective Projection Matrix

Setting the Perspective projection matrix in Open GL (including OpenGL ES 2.0) has the following general format: glm::mat4 perspective(float fovy, float aspect, float zNear, float zFar); Notice the ...
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2answers
2k views

3D isometric depth sorting

How is it possible to depth sort tiles and objects in an isometric environments without any limitations? I've been researching this for a while now and there seems to be no publicly available answers ...
5
votes
1answer
707 views

Cross-Sections of 3D Rendered Objects

I am currently trying to look into techniques that allow the calculation of arbitrary cross-sections of a 3D object or rendered volume. However, I have been unable to find much on the topic. I know of ...
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votes
2answers
895 views

What is road map for Windows 3D game development in C#

I used WPF 3D to make a demo program a while ago. I'm now want to give some other things a shot but find working in WPF 3D ... confining. I have looked at Managed Direct3D but read that it's dead. I ...
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votes
3answers
1k views

Android collision detection of a 3d object based on a 2d projection

I am writing a game for android. We have an orthographic view setup, but the characters (ships, projectiles, etc). The enemies / characters will be able to rotate about the x axis. The problem is that ...
5
votes
1answer
444 views

Best methodology to prepare 3d models for avatar customization?

I know preparing mount points and the like. But what's the best way to prevent Z fighting with customizations close to moving parts like elbows and knees?
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votes
3answers
639 views

Is there any algorithm for creating 3D lightning?

Is there any algorithm for generating lightning? Lets say, you input the starting and ending coordinates (x,y,z) and out comes an array of coordinates to show where the lightning goes. It doesn't have ...
5
votes
1answer
605 views

Why does my VertexDeclaration apparently not contain Position0?

I'm trying to get my code from calling each individual draw call down to using at least a VertexBuffer, and preferably an indexBuffer, but now that I'm attempting to test my code, I'm getting the ...
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votes
3answers
2k views

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 ...
5
votes
1answer
712 views

How to generate portal zones?

I'm developing a portal-based scene manager. Basically all it does is to check the portals against the camera frustum, and render their associated portal zones accordingly. Is there any way my editor ...
5
votes
1answer
753 views

How to implement translation, scale, rotation gizmos for manipulating 3D object's transforms?

I am in the process of developing a basic 3D editor. It uses OpenGL for rendering a 3D world. Right now my scene is just a few boxes of different sizes and I am at the stage where I want to be able to ...
5
votes
1answer
650 views

Efficient foliage rendering with OpenGL

Rendering foliage usually involves "hanging" triangles and textures that have completely transparent areas. I'm interested in knowing how are these usually handled by a 3D engine. The first thing ...
5
votes
1answer
433 views

apply non-hierarchial transforms to hierarchial skeleton?

I use Blender3D, but the answer might not API-exclusive. I have some matrices I need to assign to PoseBones. The resulting pose looks fine when there is no bone hierarchy (parenting) and messed up ...
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votes
2answers
416 views

I need advice on creating animal 3D walk cycles in XNA

I want to purchase a number of 3D models from TurboSquid and animate them in an XNA game. I wrote a lot of games from 1985-1999 and have recently become involved with XNA. Now I would like to port ...
5
votes
1answer
519 views

How to attach two XNA models together?

I go back on unsolved question I asked about attaching two models together, could you give me some help on this ? For example, If I want to attach together Model1 (= Main model) & Model2 ? I ...
5
votes
1answer
936 views

How can I create a 3D model in Java without using modeling software? [closed]

I am a lightly experienced game developer and this is my first time trying 3D objects in Java for the first time. I have been recently creating and updating games using AWT, Swing, and Graphics, but I ...
5
votes
1answer
231 views

How can I convert OBJ data into CSS3D transformations?

I want to convert the data in a 3D .obj file (vertices, normals, faces) to CSS3D (width, height, rotateX,Y,Z and/or similar transforms). I found a bunch of formulae and what-not, but 3D isn't my ...
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votes
2answers
814 views

If I project a sphere in 3D will it be a circle?

Assuming I have infinite vertices to represent the sphere, if I project the sphere from any position/scale in 3D to 2D, will it be a circle? I know it will not be a circle on the screen, because of ...
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4answers
1k views

I'm a single developer making a game made of blocks. Can I make 3d characters made of blocks without looking like Minecraft?

I would like to differentiate the look as much as I can but yet it has to be within the limits of what is reasonable for a single programmer can do. I have alot of ideas that would make the game ...
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votes
8answers
11k views

Where to start? (3D Modeling) [closed]

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 ...
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votes
5answers
2k views

How should I start playing with 3D? [closed]

One of my hobbies (aside programming, of course) is 3d modeling (completely amateur, using 3ds MAX) and I'd like to mix programming with 3d modeling (what a marriage!). So I've read a little about it ...
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votes
4answers
5k views

what is the simplest 3d software for unity? [closed]

Ive heard a lot about Daz studio, Poser, Maya, K-3d, Anim8or, Blender, and all the rest. My question is which one is the best choice in terms of simplicity and quality. price is not an issue really. ...
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votes
4answers
2k views

Do 3d assets cost a lot more than 2d?

I'm planning to create a game on my own and will most likely hire an artist in the future. I just want to know if making a game in 2d will a lot cheaper than making it on 3d? Here's my plan: If it ...
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votes
3answers
2k views

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 ...
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votes
2answers
1k views

Repairing back-facing triangles without user input

My 3D application works with user-imported 3D models. Frequently, those models have a few vertices facing into the wrong direction. (For example, there is a 3D roof and a few triangles of that roof ...
4
votes
4answers
2k views

How do you organize your game files and classes? [closed]

Although it isn't necessary to exclude things like graphics and audio packages, I'm most interested in the organization of the folders for classes that deal with AI and game state. I'm thinking ...
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votes
2answers
957 views

Replacing a custom 3D model format with something more standard

This is long, so the short question is: What's the best/right/standard set of technologies for creating 3D models and incorporating them into a game such that the complexity for the artist is kept to ...
4
votes
2answers
349 views

How do I get started with fog type effects in a first person game?

Hey guys, I'm currently using JME3 to learn 3d game development in java, and I have run into a situation. I would like to add fog effects to my games, but I don't even know where to start to implement ...
4
votes
7answers
432 views

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 ...
4
votes
2answers
432 views

Is it possible to create an “impossible” rooms in games?

Forgive me my lack of knowlegde, but for quite a long time I asked myself whether it was possible to create a continous game space that some player could walk inside and so on, that would be ...
4
votes
1answer
272 views

Is it more efficient to render full size with AA, or scaled down with no AA?

Which is more resource-efficient (given a typical modern 3D game scene): Rendering it at 100% scale with anti-aliasing, or Rendering it larger and scaling it down to fit the screen, but without AA? ...
4
votes
3answers
2k views

How do I calculate the exit vectors of colliding projectiles?

I'm trying to create projectiles which bounce/ricochet off one another when they collide in mid-air. All projectiles are spherical and have identical size, mass, and speed. Each has two vectors: one ...
4
votes
2answers
222 views

Does one's choice of 3d modeling software used during asset creation affect performance at runtime?

Does software used to create 3d assets (for game development specifically) have an impact on the efficiency of the program? In other words, is it possible to reduce the operating footprint of an ...
4
votes
4answers
536 views

Why not use vectors to represent orientation?

From what I've read, people mostly use either quaternions or 3x3 matrices to represent 3D orientations, while plain vectors are used for angular velocity/momentum. Since we can use vectors to ...
4
votes
3answers
6k views

what is more expensive 2D sprites or 3D models?

Me and my friends are programmers.We decided to try ourselves in game design. As we don't want to find ourselves in debts, we decided to avoid investors. We want to develop and publish a couple of ...
4
votes
4answers
744 views

Benefits of upgrading from OpenGL ES 1.1 to 2.0 on iOS

I have an animated 3D iPhone game that I first wrote using OpenGL ES 1.1 in late 2009. After many updates to the rest of the game, the OpenGL ES 1.1 code still runs fine under iOS 6, but I'm ...
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2answers
999 views

Calculate an AABB for bone animated model

I have a model that has its initial bounding box calculated by finding the maximum and minimum on the x, y and z axes. Producing a correct result like so: The vertices are then stored in a VBO and ...
4
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3answers
2k views

How to calculate the inverse of a 4*4 opengl transform matrix

I am transforming my camera like any other object. I would like to set the view model matrix to the inverse of this so that I can draw the rest of the objects relative to the camera. How do i ...
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votes
4answers
3k views

How to draw only visible models of the game?

Suppose I have an array of models, each having it’s own “position” in the world space (scale*translation matrix). And I have an orthogonal camera. How can I test if model is “visible”, i.e. is in the ...
4
votes
2answers
591 views

How do I use D3DXVec3Unproject with D3D11?

I'm having a small issue with D3DXVec3Unproject. I'm currently using Direct3D 11 and not 10, and the signature for this function is: D3DXVECTOR3 *pOut, CONST D3DXVECTOR3 *pV, CONST D3D10_VIEWPORT ...
4
votes
3answers
3k views

List of 3D libraries based on WebGL [closed]

Is there a up-to-date list of WebGL libraries or articals with comparison? Until now I heard only three.js and GLGE.