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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6
votes
4answers
2k views

What is the simplest way to calculate distance in a 3D environment?

What is the simplest way to programmatically calculate difference between two points in a 3D game environment? I am trying to sort a list of light sources by how close they are to an entity, so that ...
0
votes
0answers
110 views

Insert 3d text to the front face of a cube GameObject

I want to add a text to a cube in Unity. I have a cube which has a 3d text as a child. I am using the below javascript to write on the 3d text: #pragma strict function Start () { } var countdown : ...
2
votes
1answer
485 views

Processing - implement a first person camera?

First off, I'm sorry if there are duplicates of this. I did an extensive Google search but was unable to find anything that made sense to me. (I am new to 3D rendering and such.) I want to make a ...
1
vote
3answers
447 views

Why does unity obj import flip my x coordinate?

When I import my wavefront obj model into unity and then draw lines over it with the same coordinates in the obj file, the x coordinate is negated. I don't see any option in the importer that might ...
1
vote
1answer
212 views

Creating a 2d look sprite sheet and textures out of 3d models [duplicate]

I'm trying to make a 2d game (rpg top down), and I've got no 2d artists help me out making 2d characters and textures, but I have one who can make 3d stuff (using Blender and 3d Max), I was wondering ...
1
vote
0answers
115 views

How do I implement realistic recovery from weapon recoil?

I want to create an equation determining how fast a gun recovers back to its center after it has fired. I have a weapon system functioning based on constants (recoil amount, bullet spread, etc.) ...
1
vote
2answers
327 views

Does PBR mean only one, right technique to view 3D scenes?

For example if I call Unity 5 render pipeline a PBR (Physically-Based Rendering) and Unreal Engine 4 render pipeline as well PBR, does it mean that the same model with the same PB textures will be ...
0
votes
1answer
1k views

What are “view frustum”, “focal length” and near plane distance?

I've been reading through "Mathematics for 3D game programming and Computer Graphics" lately. Specifically definition of the view frustum and how the APIs generally process it, author introduces the ...
0
votes
0answers
32 views

Rotating between two coordinate frames

I have two coordinate frames, A and B. I want to create the rotation matrix RAB which takes you from A to B. A is a right-handed system, and B is a left-handed system. Furthermore, after moving from a ...
52
votes
8answers
13k views

Where to start with game development? [closed]

To anyone who finds this question on Google or elsewhere 3 years after asking this question I've had a lot more experience with game design, and I have a good idea what I was lacking in ...
1
vote
0answers
66 views

Find the largest empty space inside a cube populated with a point cloud?

Lets say we have a set of points (x, y, z) where we know 0 < x < 1 (same for y and z). Now that 3d space is populated with monsters, players or what not. The points represent their location. We ...
0
votes
0answers
49 views

possible way to bring canvas 2d animation in canvas webgl context

when added 2d animation canvas in 3d webgl canvas as texture, 2d animation and 3d animation both stopped working. Any reference for this.
-1
votes
5answers
4k views

Too much animation work for 2d characters. Creating 2d character animations by prerendering an animated 3d model?

I've read a bit about creating assets for games and the consensus seems to be that 2D is cheaper than 3D in all aspects with the exception of character animation. That's caused by the need of ...
1
vote
0answers
38 views

Zoom to Mouse on a Globe using a Perspective Projection

I am trying to create a strategy game that takes place on a globe (i.e. a textured sphere). I would like to be able to zoom to mouse like on google maps. My camera always points towards the center of ...
2
votes
1answer
348 views

Frustum culling with an octree: one AABB per bone or one AABB per object?

I've constructed an octree for use in frustum culling. The question is, should I insert an AABB for each bone of each object, or just the one AABB for the object?
4
votes
3answers
271 views

Extract smaller frustum from camera frustum?

Background: I was thinking of implementing multiselection by performing a frustum culling on a sub-part of the screen. Problem: Given total screensize, a rectangle on the screen (pos, size), and ...
0
votes
0answers
38 views

Check if an axis aligned cube intersects with a 3d triangle?

Check if a point is inside a cube: def is_point_in_cube(point, cube): return ( p.x > c.x and p.x < c.x + c.size and p.y > c.y and p.y < c.y + c.size and p.z > c.z and p.z ...
2
votes
2answers
452 views

How to synchronize damage with attack animation in a RTS game?

I have been working on a RTS game in unity and did damage deal through code and a timer but it does not fit with the animations quet well. The damage is dealt in the beginning of the animation and ...
1
vote
0answers
57 views

XNA/DirectX: Advanced 3D Sound

Im currently working on an xna game with c#. Ive been looking into 3D Sounds recently as this is the next objective on my list. Ive found several tutorials online and they dont work to the standards ...
1
vote
1answer
185 views

3D model editor manipulators

I'm trying to make my own 3D model editor to better learn 3D programming. I have my translate manipulators and I'm trying to calculate the Vector2 that the mouse would have to move in order to move an ...
1
vote
2answers
121 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 ...
-1
votes
1answer
97 views

3D OBB vs OBB Collision Detection and Response

I need to know how to do collision detection and response for 2 3D OBB objects. I will also need to be able to have certain objects disabled (no collision, incase I need to test something like a ...
0
votes
1answer
81 views

Multiple Vertex Layouts

I have different vertex layouts I'm using to render things in DirectX and as of now I've just used the same vertex layout for every mesh I load in. But now I want to have the vertex layout change ...
1
vote
1answer
209 views

Drawing Projected Vertices/Faces In Order

I recently created a 3d engine, and have gotten to what is (as I've found) the hardest part so far. I need to sort the objects and then draw them. I've looked at sorting algorithms, but my case is ...
0
votes
1answer
78 views

Scaling world - projection, view or separate matrix?

I am currently writing a simple 3D space visualisation program. Things get loaded into it from a simple XML file, which contains positions and sizes of objects in space, so you can put basically any ...
1
vote
1answer
55 views

Finding the side of a shape a ray intersects

For some simple 3D shapes (cubes, prisms) how can I determine which side a ray intersects, knowing the direction of the ray, and the normals of the shapes' sides. I thought of using plane ...
0
votes
0answers
67 views

How to import smoothing groups from 3D max to ZBrush

I need to import model from 3D max to ZBrush with smoothing groups because I need to have some smooth edges and some sharp. As I remember it was possible to make it in ZBrush 3.0 by using plugin ...
0
votes
1answer
65 views

Draw 3D model on top of another one

I am trying to draw a 3D model I made with Blender in Monogame/XNA and this is the result I get when I draw 2 of them on top of each other How can I make it so that the colors don't add up, but the ...
0
votes
0answers
24 views

How does collision detection work? [duplicate]

I was curious on how hit collision works in games. I know there is a simple method that gives every object in a 2D or 3D world a recengular hitbox that makes it easy to detect a collision, but when ...
4
votes
3answers
1k views

Render angles of a 3D model into 2D images?

Is there a tool out there that you can give a 3D model file, and it will output 2D renders of it from various angles? For example if you were making a 2D RPG but you want to make your character look ...
5
votes
2answers
523 views

How do I apply A* to a complex and dynamic 3D environment?

I've looked a bit at Breadth-First and Depth-First search algorithms and I think I've got a pretty good idea of how they work. Now I am here : http://www.policyalmanac.org/games/aStarTutorial.htm ...
0
votes
1answer
405 views

A* pathfinding in 3D

I've looked through some A* pathfinding algorithm examples, but as far as i know they work with grids e.q -> http://qiao.github.io/PathFinding.js/visual/ But how can I use this algorithm in my 3D ...
0
votes
2answers
252 views

How to set player rotation to direction the player is moving?

I'm having an issue with my click to move mechanic. I want the player to move to a specific position in the game when the mouse is clicked (and it does just that) but the issue I'm having is that the ...
0
votes
0answers
82 views

Calculate future 3D Position of object(Unit)?

I've looked around and almost all examples is see have a velocity vector which I do not have, or at this point am unable to figure out. Im trying to find the 3D position where i can launch a trap in ...
0
votes
0answers
47 views

Stuck on a steering problem

i'm building a car game, and currently working on the steering. i would like to change the motion of Z rotation so that the car rotates around the Z axis when the wheels are turned. I can't set the ...
4
votes
1answer
2k views

Is a game like Subway Surfers suited for 2D or 3D?

I imaginated a mobile game and now I'm getting doubts as to whether its possible for my idea to be developed in 2D. Here's a crude illustration of the game scene: It's pretty much like Subway ...
2
votes
2answers
426 views

3D models on 2D background perspective mismatch

we are working on a tactics game, with a hand drawn 2D backgrounds and 3D models moving on them. The game generates a 2D grid placed on a XY plane, with faux isometric tiles (Diamond Grid). I have ...
0
votes
0answers
38 views

What map projection is needed to transform a shapefile into a 3D earth?

I'm looking for a way to create a 3D earth in Flash, something like the wonderful SolarSystemScope, only in my map the countries should be clickable and whatnot. To get started I've got map data from ...
3
votes
2answers
807 views

How can a load and play an .x model using vertex animation in XNA?

From a game I developed years ago, I still have character models that my former 3D engine designer created and that I'd like to reuse in a Windows Phone project now. However, the files are in DirectX ...
13
votes
4answers
13k views

How to load 3D models into Java?

Using LWJGL what is the easiest way to load a 3D model to be drawn on screen? I know LWJGL doesn't have built in loading support so I am looking for a small library that would help to load ...
13
votes
5answers
4k views

Generated 3d tree meshes

I did not find a question on these lines yet, correct me if I'm wrong. Trees (and fauna in general) are common in games. Due to their nature, they are a good candidate for procedural generation. ...
2
votes
2answers
159 views

How to calculate a 3D orientation from 2D vanishing lines on an image?

Let say I have a image that represent a 3D scene. I did not have the 3D camera orientation of that scene (left, up and forward vectors) and i'd like to calculate it. On that picture, I draw the ...
1
vote
4answers
2k views

Checking for collisions on a 3D heightmap

I have a 3D heightmap drawn using OpenGL (which isn't important). It's represented by a 2D array of height data. To draw this I go through the array using each point as a vertex. Three vertices are ...
1
vote
0answers
86 views

DirectX graphics issues [closed]

When you see something that looks like this And it's actually supposed to be like 100 models of asteroids. What would you say is wrong with it? Index Buffers messed up. Vertex Buffers? Projection? ...
0
votes
1answer
67 views

Implement a Vision cone in 3D

I'm looking at how to implement a vision cone for my AI. Everything I look at talks about a forward vector, but in my situation, and I'm not that great with math, I have a vector but it doesn't give ...
1
vote
1answer
78 views

“aim at” in 3D space algorithm

I'd to calculate the cartesian rotate values of "aiming" one point at another in 3D space. For example, assuming rotation order of XYZ: Point A is at [0, 0, 0] Point B is at [2, 2, 0] If point A was ...
0
votes
4answers
93 views

YAW not working correctly with XNA

I successfully draw the model, and made it move forward and backward, but when I try to make it rotates (yaw) its not working correctly, like its moving too instead of only rotate. Here is my camera ...
0
votes
3answers
228 views

How to render grid properly, especially over distance?

I'm drawing a grid, pretty much like one can see in the Unity editor itself or any 3D-editor, many 3D-related applications and some games. But it doesn't look pretty in my case. I put a few random ...
2
votes
1answer
140 views

Easiest way to make a 3D overworld [closed]

Using something like Blender, would it be easier and more time and space efficient to create 'tiles', and use some kind of software like Tiled to use these tiles in the various maps, or would it be ...
0
votes
1answer
41 views

How to rotate model 180º with XNA

I got a model, and a camera pointing at this model, I think my camera position is the problem. Its showing the front of the model, but I want it to show its back like in third person. My camera code ...