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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1answer
395 views

LWJGL Camera Rotation Issues

I am quite new to LWJGL and OpenGL and I am trying to create an FPS camera. I had no problem with 2D stuff, so I decided to step things up and try and make some things in 3D. I have this 3D camera ...
2
votes
2answers
336 views

Implementing Geometry Instancing in DirectX

I have a project that I'm doing in Managed DirectX (DX9) where I want to render lots of grass. My current method (many draw calls) is slow, but I've heard Geometry Instancing can fix that. I know ...
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
1answer
66 views

How to modify normal vectors with a tranformation matrix

Transformation is quite simple when it comes to Position or Color of the vertex, for Position just multiply matrix * vector and for color just don't do anything, but my question now is: How to handle ...
0
votes
1answer
267 views

XNA 3D Unable to Position Bounding Sphere

I have a collision method which seems like it would work, and it does, but the bounding sphere is always at 0, 0, 0. How do I fix this? Any more code and or details are avaliable upon request. Any ...
8
votes
4answers
322 views

Why nearby triangles tend to disappear?

I've just enabled back face culling and I'm noticing a weird behavior: when all vertices of my triangle is outside the view and 2 of them is behind me (I think) the triangle disappears. So to see it, ...
0
votes
1answer
155 views

How to rotate model, around its own center?

I have a 3d Model that it wasn't made from the origin of the 3d program, lets say that it was built at (100, 100, 100), I know how to rotate a model, but around the model origin point, (0, 0, 0), now ...
0
votes
0answers
146 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 ...
2
votes
1answer
734 views

Skeletal animation with Assimp and glm

I'm trying to implement skeletal animation using assimp and glm. Everything seems to work, except for rotations. This is the code I use when packing assimp data into my own engine's format. I THINK ...
3
votes
4answers
273 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 ...
0
votes
3answers
150 views

Why I am I told “Color0 is missing” when I run the following code?

In the code below, I want to draw a box on my screen. But when I run it, there is an error message: The current vertex declaration does not include all the elements required by the current ...
0
votes
1answer
230 views

3D rotation and movement of ball on a 2D plane

Here is a video of Amiga arcade pool game: https://www.youtube.com/watch?v=zTQIPFBUFIg I am making a similar game with C and Gtk+3.0 but I don't know how to show balls 3D movement on 2D plane! I ...
3
votes
4answers
323 views

Dynamic Terrain Triangulation

Is there someone who know/have an algorithm which can perform terrain triangulation like on the example image right under (there is a secondary image as well). The reason I say "Dynamic" is because I ...
-1
votes
1answer
80 views

Why doesn't my XNA model render at all? [closed]

I am trying to draw a 3D Model in XNA 4.0, but it doesn't show up. I think I made it correctly, but maybe not. My code follows: Here is the LoadContent and Draw method of my Main class. Spaceship is ...
1
vote
1answer
227 views

Replace a div (with a ball picture in it) with a 3D canvas ball [closed]

I am trying to make a game where you have to keep the ball on a green platform. At this point the ball is a div with a ball image. You can move the ball over the field, all works great. See it in ...
4
votes
5answers
1k views

How to rotate an object around world aligned axes?

I have a Vector3 which has an euler angle for each axis. Usually, when I want to create a rotation matrix I will use functions such as D3DXMatrixRotationX passing the respective angle from my ...
0
votes
0answers
29 views

Blendshapes workflow in mudbox

I am new to mudbox. I want to create a face with blendshapes. Currently my face has 24576 polygons on level 3. I would like to go to level 2 or level 1, ie lower than 6000, but there, detail suffers. ...
2
votes
1answer
247 views

Ray picking and bounding boxes in Java

How do I check which bounding boxes (of different types) a ray, sent from the camera through the mouse-click coordinates, intersects with first in Java (and where)? I have arrays (box_X, box_Y, box_Z, ...
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votes
0answers
75 views

Rendering a model with transparent or translucent uv map applied doesn't work

Before I try to make anything transparent, the model renders nicely. When I change the uv layout so that one piece of the model will be transparent, it renders horribly. This is the result with a ...
1
vote
0answers
291 views

Gluing libraries together into a 3D engine [closed]

As I read about people wanting to write their own 3d engine from scratch and people recommending using existing engines, it occurred to me that a middle-ground exists between developing your own ...
0
votes
2answers
142 views

Creating a collision shape for a complex model

I'm currently creating the collision system for my 3D XNA game. To check collisions with models (especially complex ones) like trees or other plants, I thought about rendering a low poly version of ...
0
votes
1answer
243 views

(XNA) 3D Model Rotation Angles

I'm currently in the process of making a 3d "semi" top down game, the camera comes in at a very high angle near 90 to show off the 3d models. I have a main character which can move in 4 axis (up, ...
0
votes
0answers
148 views

Block picking / ray casting through 3d blocks always slightly off

I've been working on adding a line-of-sight/ray-tracing system to my 3d block-world game. I've tried several different methods and they all work fairly well. At the moment I'm using something similar ...
1
vote
1answer
107 views

What causes still objects have lines in them when lighting is being changed? [duplicate]

First, here is what I'm talking about (I changed the contrast to make it more visable, since it's not really visible in still images): Ingore the chat box, I was spamming buttons to see which one ...
0
votes
0answers
320 views

How does one convert dummies to bones in 3DS Max 2010?

I have a character's .max file. To get the animations into the game I need to have bones, export a .3ds file and then load it into one of the game tools provided by the developers to tweak some stuff ...
0
votes
1answer
124 views

How can I get my Android camera system working more like Google Earth's? [duplicate]

I'm implementing a touch screen interface whereby the user dragging their finger on the screen will rotate the camera in a sphere around the central point. My code works well for the horizontal swipe ...
0
votes
1answer
735 views

Is there a way to create a sky-sphere instead of a skybox in Unity3D?

In a 3D game, how can I make a sky background seen at the horizon? I tried adding a texture to the skybox but since it's a box it looks horrible. When I'm not using a texture it's not notable that it ...
3
votes
1answer
235 views

How to test a 3D rendering engine? [duplicate]

Me and some friends developing simple 3D rendering engine as practice for the university. We used Ogre 3d as prototype and now we are developing it from base The engine is wrapped up in simple game ...
8
votes
1answer
661 views

what is world space and eye space in game development?

I'm reading a book about 3D stuff and OpenGL. The book often talks about world space and eye space. What exactly is the "world space?" Does the "eye space" mean the projection?
1
vote
1answer
68 views

Models not rendering when far away

I am making a game where objects are represented by colored cubes. I have files that mark the location and rotation of the cubes. I've been using Processing's 3D library and the cubes disappear within ...
4
votes
2answers
396 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 ...
8
votes
2answers
626 views

What are some ways to texture map a terrain?

I'm working with XNA on a 3D Game, and I'm trying to have a proper and nice environnement. I actually followed a tutorial to create a terrain from a heightmap. To texture it, I just apply a grass ...
0
votes
1answer
307 views

What is required for casting shadows in JavaFX 8 3D?

In a scene with an added point light the shapes are not casting shadows on each other. Is anything required to cause them to cast shadows?
1
vote
1answer
2k views

How to opitimize Shadows in Unity 3D

I made the shadow of Solider in my game using Unity pro shadows feature. http://docs.unity3d.com/Documentation/Manual/Shadows.html The performance of my game becomes very slow after adding these ...
5
votes
1answer
489 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 ...
4
votes
1answer
482 views

Polygon count budget

Is there any smart way to think about polygon budget relating to PC gaming today? My game will have one static 3d background scene and two fighters. No more enemies. I am thinking about having ...
2
votes
1answer
722 views

Best practices of texture size

I wanted to know how should I determine a good texture size ? Currently, I always create UV texture that are 1024x1024px but if I create for example, a big house with a 1024px texture size, it will ...
1
vote
1answer
111 views

What is w componet [duplicate]

What is the W component on graphics programming. I read a blog about opengl that says that w must be equal to either 0 or 1 here. But the book I am currently reading has put w component to more than 1 ...
1
vote
0answers
147 views

How do I make a shaped fluidSurfaceActor in UDK?

I'm trying to make a fountain for my level in UDK. I've made the base of a fountain by using a Cylinder build and now I'm trying to put water in it. I want to use the fluidSurfaceActor but I notice ...
0
votes
0answers
53 views

3D Box Collision Data Import

I'm trying to implement a collision system using oriented bounding boxes, using a center for the box, it's extents as a 3D Vector and a rotation matrix, which is all stuff I picked up online and seem ...
3
votes
1answer
339 views

How to make Pokémon White 3D effect?

I just wondered how to create a 3D effect similar to Pokemon White/Black? It seems to be not polygon based, but created just with sprites. If the perspective changes the sprites stay sharp and don't ...
2
votes
1answer
175 views

First Person Camera strafing at angle

I have a simple camera class working in directx 11 allowing moving forward and rotating left and right. I'm trying to implement strafing into it but having some problems. The strafing works when ...
0
votes
0answers
235 views

JavaScript 3D space ship rotation

I am working with a fairly low-level JavaScript 3D API (not Three.js) which uses euler angles for rotation. In most cases, euler angles work quite well for doing things like aligning buildings, ...
1
vote
1answer
116 views

Automatically zoom out the camera to show all players

I am building a game in XNA that takes place in a rectangular arena. The game is multiplayer and each player may go where they like within the arena. The camera is a perspective camera that looks ...
0
votes
0answers
84 views

Triangle Clipping

I want to determine which part of a triangle is visible in a frustum in OpenGL, is there a way to get visible coordinates of triangle in the viewing frustum?
2
votes
1answer
157 views

Why is there high performance hit with many meshes?

I am currently reading upon Geometry Instancing, as I want to render a lot of animatable objects on the screen. However I have come to a more fundamental question first: Why do I even need to use it? ...
8
votes
2answers
644 views

How do I choose the scaling factor of a 3D game world?

I am making a 3D tank game prototype with some physics simulation, am using C++. One of the decisions I need to make is the scale of the game world in relation to reality. For example, I could ...
1
vote
1answer
456 views

Correct rotation with Quaternion

I have some problems with a rotating marble. I've tried it with Matrix.CreateFromYawPitchRoll and Matrix.CreateRotation but there were some problems, I think it's due to the Gimbal lock effect. So, ...
1
vote
2answers
196 views

General visual effects to meshes/entities

I am trying to add some visual effects to some entities, meshes, or whatever you want to call them as they are looking pretty dull in my game right now. What I want to achieve is this: ...
0
votes
0answers
94 views

Generate complex (non-convex) polyhedron UV mapping

I need to find an approach to the problem of generating texture maps for non-convex polyhedrons without using a design tool like Maya. Specifically, I am mapping simulation results data onto a 3D ...