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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How can I do a weighted cascade down a path in a 3D environment?

I am trying to perform a weighted cascade down a path in a 3D environment. Now, what I am trying to do is have one object(a cube) in the environment scan from its coords 1 in every direction for ...
0
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0answers
17 views

Unity3d wheelcollider falling through terrain

I have created simple project with 3D car and terrain. I have added 4 Wheel Colliders on model wheels. But when I run project wheels falling through terrain. Before run: After run: I am sure that ...
4
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1answer
635 views

Catmull Rom Spline - Constant Speed

Given the equations found in the answer here: Determine arc-length of a Catmull-Rom spline How would one A) Apply this to a 3D Catmull-Rom Spline, and B) write A out programmatically (for the math ...
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2answers
74 views

Quaternion Rotation Help

So I'm making a little engine with DirectX 11 and C++. (Some other help from other API's as well) DirectX has this function XMMatrixRotationQuaternion(XMVECTOR quaternion). I know nothing about this ...
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0answers
38 views

What are the different parts to make a 3D game? [on hold]

This question may sound stupid, but please answer it: My question is what kind of separate parts are needed to make a (real-time) online multiplayer 3D game There are different parts to combine to ...
8
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1answer
3k views

Is there any game engine capable of true binaural positional 3D audio? [closed]

I am by no means a game designer, so I apologise in advance if I fail to use the proper jargon. Feel free to correct my mistakes. My understanding is that, at the moment, in most if not all ...
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0answers
24 views

XNA: Working with primitives and tessellation [on hold]

I was working with primitives in XNA (since I have limited knowledge with 3D and modelling), and I have 3 similar questions below: Question 1 I was reading up on terrain tessellation in an article ...
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1answer
115 views

Mapping a 3D texture to a standard hollow-hull 3D model

I have 3D models which are typical hollow hulls. If such a model also had a 3D volumetric/voxel texture map then given a point P inside such a model, I'd like to be able to find its uvw coordinates ...
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1answer
93 views

Finding a vector perpendicular to a current vector

Assume, that we have a player that has a vector direction. We have an enemy, that is shooting a player. And the task is to find out from which side the enemy is shooting. I know the algorithm, how to ...
-1
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0answers
50 views

Elite-on the NES [on hold]

I'm not from a programming background, i am from a 3D animation back ground and i like to know how things work. So now onto my question, the 3D wireframe game Elite, there is a version for it for the ...
0
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1answer
41 views

Mouse interface for 3d environment with camera [closed]

I'm programming a 3d environment with a camera, and need to decide what the mouse will do. There are several possibilities e.g. Rotate the camera Move the camera Move an object Rotate the ...
0
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0answers
55 views

X, Y, Z rotation around camera

I'm making a 3d orthogonal-projected, game using painters' algorithm in java. I'm able to rotate the objects with incremental rotations (e.g. rotate all objects 10 degrees) using affine ...
26
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6answers
5k views

What 3D level development tools are available to indie developers? [closed]

People who build in Unity or UDK have immediate access to a 3D level editor. People who build their games in XNA or from scratch have no such thing. I'm looking for 3D level development tools ...
1
vote
1answer
291 views

2D map/plane with nodes overlayed that supports panning, scaling and clicking on nodes

I'm trying my hand at Android development and seem to be running into an invisible ceiling in trying to get what I want accomplished. Basically I'm trying to create an app that renders a 2D surface ...
1
vote
1answer
50 views

Problems with texture orientation in space

I am currently drawing texture in 3D space and have some problems with it's orientation. I'd like me textures always to be oriented with front face to user. My desirable result looks like ...
2
votes
1answer
59 views

Colision detection of disc (Maximum Material Condition aka “Flatness”)

I have a 3D-laser scanner which gives me a series of points of a real-world object. The points are related by a common origin. I know I can derive the equation of a plane from 3 points and that the ...
1
vote
1answer
350 views

Need help with a complex 3d scene (using Ogre and bullet)

In my setup there is a box with a hole on one side, and a freely movable "stick" (or bar, tube). This stick can be inserted/moved through the hole into the box. This hole is exactly as wide as the ...
21
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6answers
3k views

Are there any open source or free 3D modelling/animation tools that are widely used by indie game developers? [closed]

I have tried out Blender and Milkshape 3D, but my question is mainly asking if there is any 3D animation/modelling software that is open source, free, or has an indie license available that is widely ...
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1answer
72 views

More vertices vs more textures

I'm currently working on a dynamic 'door' creator, and I'm trying to decide which is more efficient. Not much experience with 3D render speeds, so I'm asking before I choose which direction to go ...
1
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1answer
263 views

LWJGL SlickUtil Texture Binding

I am making a 3D game using LWJGL and I have a texture class with static variables so that I only need to load textures once, even if I need to use them more than once. I am using Slick Util for this. ...
3
votes
3answers
116 views

2 component unit vector

Is it possible to store a 3d unit length vector with only 2 components, for example as coordinates on a unit sphere? It seems possible but I have never seen anyone do this. Would this be at all ...
16
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6answers
2k views

Is Unlimited Detail real?

Many aspects of Unlimited Details Unlimited Detail Technology seems dubious to me, even the introductory paragraph (because of the usage of the word unlimited): Unlimited Detail is a new ...
3
votes
1answer
149 views

Multiple weapons for android game

I am trying to make a 3D game for android using the Rajawali engine to render the 3D graphics and blender for designing my models(exporting as .md2), and I want my character to be able to change ...
15
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4answers
2k views

Why do we use 4x4 matrices to transform things in 3D?

To translate a vector by 10 unit in the X direction, why do we have to use a matrix? We can just add 10 to the mat[0][0], and we got the same result too.
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vote
1answer
1k views

How can I make caves with Unity's terrain creator?

With Unity's terrain creator, I can't simply make a "hole" on the mesh. I don't know how I would make cave-like structures other than using "rock" meshes for the roof (wich will indeed look weird) ...
1
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2answers
95 views

Unity plane that is normal to Z axis

I want to create a plane that will be normal to the Z axis, but I am having difficulty visualizing what rotation it needs to have. I want to have a top-down view upon the plane such that I can use ...
1
vote
1answer
158 views

In 3D camera math, calculate what Z depth is pixel unity for a given FOV

I am working in iOS and OpenGL ES 2.0. Through trial and error I've figured out a frustum to where at a specific z depth pixels drawn are 1 to 1 with my source textures. So 1 pixel in my texture is ...
5
votes
1answer
143 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 ...
14
votes
3answers
2k views

How can I draw outlines around 3D models?

How can I draw outlines around 3D models? I'm referring to something like the effects in a recent Pokemon game, which appear to have a single-pixel outline around them:
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votes
2answers
76 views

A*Pathfinding lose target after spawning from script?

I have been using A*Path finding to enable object tracking. It works fine if I have both objects on the scene at the same time. However, if I were to use a script to spawn the seeking object ...
0
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2answers
68 views

Vertical Collision Detection, Falling Through Ground

After much work trying to learn collision system theory and apply it, I've got my collision system working for the most part. The player can collide horizontally with no issue, sliding against walls, ...
0
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1answer
109 views

Surface creation algorithm using points cloud

I am looking for a realtime algorithm to create a 2D mesh using points. But I am quite confused. It seems that Delaunay triangulation can help me create mesh using point clouds, but Meta-balls seems ...
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0answers
38 views

Multiple Body Code?

I've been working on one game, 3D RPG with Ogre graphic engine and I wondered if there is a code for multiple bodies? Currently there is only one body model and if I want to add a new one, the ...
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0answers
13 views

Best practice for saving content-dependent metadata? [closed]

What is the best practice (compliant with the 3D pipeline) for saving content-dependent metadata, such as barycentre? I don't want to render the metadata, but I want to inform the users about it. I ...
1
vote
2answers
239 views

Matrix rotation wrong orientation LibGDX

I'm having a problem with matrix rotation in libgdx. I rotate it using the method matrix.rotate(Vector3 axis, float angle) but the rotation happens in the model orientation and I need it happens in ...
2
votes
2answers
538 views

How does the Unity3D entity system work?

I saw the Java Artemis Entity Component System and thought of the entity system in Unity3D. In Artemis for example you can only add one component type to each entity and the logic is not in the ...
0
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0answers
23 views

Wall Collision on a model

I am building a model of a house in XNA and made a collision system so that when the player goes into the wall they stop. Also I made it so if the player is pressing the key 'up' and collides into the ...
0
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1answer
54 views

Is the rendering of distorted point clouds more complex?

I have two point clouds of n points: A dense ball-shape point cloud with many points inside A spherical point cloud with points on its surface. Is there (really) any difference between rendering ...
0
votes
1answer
69 views

How to calculate “real” distance between cursor and away object?

I don't really know how to formulate the title, but the problem is the following: I'm using a scripting language called "SQF" which has been created by a company named "Bohemia Interactive" (no, I do ...
2
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2answers
117 views

Determine percentage of screen covered by an object without using frustum culling

On the CPU-side of an 3D first-person / ego perspective game I need to check whether what the players currently sees on screen is the inside of a box object defined by world space coordinates (the ...
2
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1answer
58 views

Impact of object's statistics on the rendering

Consider two 3D objects with n points and n triangles. One of the objects has a smooth surface such as a ball or a box, and the other object is like a fuzzy onion-layered object with large ...
4
votes
1answer
110 views

Utility of submesh class in a 3d game engine?

I've read somewhere that we use sub mesh for being able to give different materials to one mesh. But why not simply do this with scenegraph ? I mean you have a car mesh, and instead of using ...
3
votes
3answers
198 views

How can I create straight, glowing lines?

What techniques are used in this style? What steps would be required to recreate it? (Screenshot of this app: https://play.google.com/store/apps/details?id=com.dkeesto.holographlw)
1
vote
3answers
152 views

How do I correctly multiply an XMMATRIX by a scalar?

Using DirectXMath and its XMMATRIX structure in C++ and Direct X 11, how does one multiply that matrix structure by a single float scalar? I want to implement the operation B = A * f; where A and B ...
1
vote
1answer
60 views

Align tetrahedrons

I'm currently generating tetrahedron meshes in Unity When a player clicks the side of a mesh, a new one spawns aligned with it, like this. I'm not sure how nor can I find any information on ...
5
votes
3answers
2k views

XNA: Rotating Bones

XNA 4.0 I am trying to learn how to rotate bones on a very simple tank model I made in Cinema 4D. It is rigged by 3 bones, Root -> Main -> Turret -> Barrel I have binded all of the objects to the ...
0
votes
1answer
63 views

Can I export animated models from Unity? Into what formats?

I have an animated 3D model from the Unity Asset Store that I would like a new animator to touch up (the license allows this). But they need it in a format they can use (in Maya or... something ...
0
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1answer
170 views

How to approach in-game character creation system alike Sims [closed]

I would like to implement an in-game character creation similar to the Wii/Mii system or The Sims using Blender and Unity. In what ways is this possible, other than (or in conjunction with) using ...
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0answers
31 views

XNA HLSL UV Mapping

I was testing my hlsl lighting shader, I've copied it from a tutorial and it works perfectly, but all the meshes in the model needs to have texture coordinate, I guess this is because this part: ...
0
votes
1answer
103 views

How do I find the angle between two 3D angles represented in this form?

I have two 3D angles, represented by [a1,a2] [a1,a2] where the a2 is < 180. My coordinates are represented as [X,Y,Z], where X,Y,Z are 64 bit ints (longs in my lang). My direction angles are ...