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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-1
votes
5answers
3k 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
2answers
61 views

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

For example if I call Unity 5 render pipeline a PBR and Unreal Engine 4 render pipeline as well PBR, does it mean that the same model with the same PB textures will be viewed identically in very ...
1
vote
1answer
117 views

Get quaternion between two objects on sphere

In a planetary gravity environment objects are represented in the following way: struct object { struct quaternion quat; // quaternion to represent the rotation between the object and the center ...
1
vote
0answers
18 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 ...
0
votes
1answer
1k views

Please explain “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 ...
2
votes
1answer
333 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
245 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
16 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
107 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 ...
0
votes
0answers
66 views

3D Game Rendering (Educational purposes) [on hold]

I've been programming off and on for a few years, and have made several 2d games in java. (I also know c# and a bit of c++). I was wondering where I should start off for rendering 3D scenes in java ...
1
vote
1answer
174 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 ...
2
votes
1answer
296 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
0answers
49 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
146 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
116 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
vote
1answer
94 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 ...
-1
votes
1answer
22 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
54 views

Center a 3D model to cursor's position

I am having a hard time understanding how to go about this. I have a 2D game with some 3D models in it. I want to move a 3D model to where the mouse cursor is currently at in every frame (In other ...
1
vote
1answer
440 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. ...
0
votes
1answer
151 views

XNA C# 3D game Wall collision response glitch

I have been working on a reliable physics system in my code and so far it's ALMOST working. :D I am aiming for wall "sliding" style of collision response, like you'd expect it to work in commercial ...
0
votes
1answer
50 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
183 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
2answers
180 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
votes
1answer
64 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
36 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
17 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
53 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
21 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
521 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
508 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 ...
0
votes
1answer
146 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
143 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
37 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 ...
1
vote
2answers
567 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 ...
0
votes
0answers
39 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
1k 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
172 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
23 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
773 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
11k 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
3k 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
116 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 ...
5
votes
4answers
1k 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 ...
1
vote
4answers
1k 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
79 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
55 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
60 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
89 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
105 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 ...