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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107 views

model view projection multiplication order

I'm debugging a lighting problem where the camera position is effecting the diffused lighting component on my 3d model. In researching my problem I went back and am reading over all the how to ...
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279 views

Mouse click movement

I need to make realistic human movement (3D) using mouse click. Get mouse click point using Raycast. Smoothly Slerp to LookRotation. Move transform.forward. Everything works fine, except I have ...
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1answer
388 views

Opentk LookAt() and 'eye' argument rotating

I'm trying to create rotating camera, which looks down by 45 deegre like this: However my code for rotating eye vector is not working properly and I achieve vertical rotation, when it should be ...
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3answers
153 views

Mathematics behind Phong shading and additive blending

I'm confused about the mathematics behind additive blending used in conjunction with Phong shading. Intuitively, it seems like you would need to use a floating-point framebuffer and some sort of ...
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1answer
75 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 ...
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2answers
346 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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1answer
180 views

Should all primitives be GL_TRIANGLES in order to create large, unified batches?

Optimizing modern OpenGL relies on aggressive batching, which is done by calls like glMultiDrawElementsIndirect. Although glMultiDrawElementsIndirect can render a large number of different meshes, it ...
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1answer
379 views

Tile textures on 3D models. HLSL shader code maybe?

I'm making a game in C# with XNA. I'm now applying textures to models. However if I change the scale of the model, the texture stretches with it. How can I make the texture tile over the model instead ...
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1answer
59 views

How do I set which side of a mesh is visible?

I know little about 3D game development, but I'm trying to understand how to set what side of a mesh has the visible face. I am using Wild Magic 5 and my object looks like this: VertexFormat* ...
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1answer
159 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 ...
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1answer
153 views

DirectX Bullet Tracer Effect

I'm wondering if anyone knows some common and efficient ways to do a fast tracer for an instant bullet. I've seen people speak on forums of using primitive lines with DirectX, but I doubt this ...
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1answer
181 views

Where is the error in my perspective projection implementation?

My question is not really a game development question, but since it's based on 3D programming, I thought it would fit best here. I've got a line made out of Point3D objects where the value of x, y, ...
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1answer
185 views

Ice sliding physics

I am trying to implement ice sliding physics on a plane for my game. There are a lot of N64 games that implemented them perfectly well, like Banjo-Kazooie, Super Mario 64, Zelda: OoT and MM, etc. ...
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1answer
229 views

Creating a vehicle using a physics engine [closed]

What is the theory behind creating a generic 3D vehicle in a physics engine? What I would like to know is what parts should I stick together to make the vehicle, how they parts should stick together, ...
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1answer
99 views

Normal map causing certain faces to get shaded

I added a normal map to a MR arch & design material in Max 2012. I have a specular in the reflection color slot and a diffuse in the diffuse slot. As i increase the intensity of the normal map i ...
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1answer
4k 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 ...
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1answer
126 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 ...
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2answers
226 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: ...
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1answer
135 views

“retro”-look in 3d-XNA-game

In my XNA-4.0-game (which somehow is a bit like MineCraft), I have got some big cubes with small textures (16x16px) on it. By default, XNA just scales them up smooth so there aren't any hard borders. ...
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1answer
1k views

how to make cross platform 3d games using modern opengl? [closed]

How to create games that run on windows, Linux, mac os x, android, ios, wp8 etc.... using c/c++, opengl 3 or 4 and opengl es 2.0. any tutorials or videos on how to create cross-platform 3d games.
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1answer
1k views

JMonkeyEngine in Eclipse

I wanted to try the JMonkey engine, so I downloaded the JMonkey sdk, but I don't want to work in the JME IDE, I would rather like to work with Eclipse, since I already started a game project there, ...
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1answer
78 views

How can I fix this transparency problem when my data is viewed from a certain angle?

using Microsoft.DirectX.Direct3D; using Microsoft.DirectX; I render a 3D data by setting device.RenderState.AlphaBlendEnable = true Now my top view looks like below, the outer surface layer ...
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1answer
198 views

Android Object get Jagged at the border

I am new to OpenGL ES 1 in android. My 3D Model border getting Jagged. Please help me to look like a smooth border instead of jagged. Screenshot : http://i.stack.imgur.com/1Gq83.png private class ...
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1answer
229 views

Whats the point of this LPDIRECT3DDEVICE9 reference?

I'm going through the DirectX 9 MSDN documentation Which lead me to something rather peculiar, do you need a class reference in DirectX 9? Can someone tell me what the point of the class ...
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1answer
340 views

Rubik's cube array rotation

I'm about to make a 3D Rubik's cube based game in Flash AS3 and Away3d. I don't really know how to manage the 2D arrays of the Rubik's cube. For example, how do I rotate the corresponding arrays if ...
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1answer
783 views

Are interleaved vertex data formats better than non-interleaved formats?

I have been reading up on data formatting for 3D objects so that I can render my meshes as fast as possible in OpenGL. I am quite new to OpenGL so bear with me. The format for interleaving your ...
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1answer
88 views

Is there a good comprehensive walk-through of deriving the math for 3D model rendering that starts from scratch? [closed]

I'd like to fully understand the math of rendering a 3D model in a 2D perspective. I always find tutorials that are in terms of the APIs used to do the math for you, and not the math itself. I'd ...
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2answers
345 views

Accumulating rotations for camera

It seems there are three ways to store a camera's rotation: in angles, view matrix or quaternion. I was using euler angles since when I used a matrix it had a tendency to accumulate rounding errors ...
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1answer
221 views

how to move the camera behind a model with the same angle? in XNA

I'm having difficulty moving my camera behind an object in a 3D world. I'd like to have two view modes: for fps (first person). external view behind the character (third person). I've searched the ...
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2answers
393 views

XNA 4.0, Combining model draw calls

I have the following problem: The levels in my game are made up of a Large Quantity of small Models and because of that I am experiencing frame rate problems. I already did some research and came to ...
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1answer
418 views

3D space game development [closed]

I want to develop a 3D game (sci-fi type with spaceships) which can be played on multiplayer mode and by multiplayer i mean around 10 players for start as it will be a personal testing project and ...
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2answers
2k views

Wrong faces culled in OpenGL when drawing a rectangular prism

I'm trying to learn opengl. I did some code for building a rectangular prism. I don't want to draw back faces so I used glCullFace(GL_BACK), glEnable(GL_CULL_FACE);. But I keep getting back faces also ...
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1answer
273 views

Viewport.Unproject - Checking if a model intersects a large sprite

Let's say I have a sprite, drawn like this: spriteBatch.Draw(levelCannons[i].texture, levelCannons[i].position, null, alpha, levelCannons[i].rotation, Vector2.Zero, scale, SpriteEffects.None, 0); ...
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376 views

Engine and level of detail for maze / labyrinth / dungeon scene?

My question is similar to these: Algorithm for generating a 2d maze To scene graph or not to scene graph? I.e. in this case should I use jme3 or some other engine (I heard unreal offers a free ...
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1answer
459 views

UVW Unwrap multiple quads on same texture space automatically

I've been looking around the web for the answer to this question, but to no avail. So here I go. I'm looking for a way to automatically map several quads on the same texture space (for example (0,0) ...
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3answers
491 views

Missing z-axis rotation for transforming between two vectors

I'm trying to rotate a cube so that it's facing up, but am getting hung up on the final implementation details. It now reliably will rotate the x,y axis to the correct side, but the z-axis is never ...
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1answer
430 views

help a 2D image onto a 3D cube

I am just diving into the Stage3D APIs for Flash Player 11. I am trying to figure out a simple way to display isometric 2D content that gets blitted from a sprite sheet onto a 3D cube. The idea ...
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2answers
342 views

Intuitive way to handle dragging outside the Arc Ball?

So I'm writing a game (or toy, rather), which involves manipulating a 3d object with the mouse. I'm trying to get the most intuitive control that I can. I've implemented the "Arc Ball" mouse control. ...
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1answer
1k views

How to install java 3d in ubuntu

I'd recently asked a question for getting started in game development from where I was suggested for the book "Killer Game Programming-Java". On the page there is a java 3d program which needs to ...
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1answer
144 views

3D Location Handling

I am thinking about making a simulator type game that will involve having lots of small objects in a 3D space. What is the typical solution for handling these objects? The first thing that comes to ...
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1answer
333 views

3D motorcycle models for web 3D tools

I'm developing a website that can display 3D models of motorbike. I haven't decided on which tool to use yet but it seems most of them support X3D and VRML files. So I'm searching for already-made ...
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2answers
917 views

How do I move a 3D particle using the Mercury particle engine?

I'm currently creating a 3D game with XNA, and I am in need of some particles.That's why I searched for a particle engine. I found Mercury, watched the tutorials and integrated it in the game. But ...
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2answers
827 views

How do i get the X,Y and Z of the way my unit is facing?

I have the yaw and pitch of my unit at my disposal, I know if I use polar to cartesian conversion I'll get the X and Y of each one of those two, but I need them combined to give me the x,y and z of ...
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1answer
586 views

XNA Automatic Collision detection from model?

This is going to be a rather vague question xD In XNA is there a way of working out if a point or rectangle is colliding with a 3D .x object? It is a big model, and would take a long time to map out ...
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2answers
481 views

Rotating coordinate system

Lets say that you want to rotate simple cube around fixed point in center. Is it possible to use such coordinate system, that you need to use only sine and cosine in order to rotate? I have done ...
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1answer
1k views

Converting to and from local and world 3D coordinate spaces?

I've been following a guide I found here (http://knol.google.com/k/matrices-for-3d-applications-view-transformation) on constructing a matrix that will allow me to 3D coordinates to an object's local ...
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1answer
302 views

3d environments and managing them on iOS

I would like to start learning 3d game development and currently only develop 2d games. A few basic questions I am interested in are: What is used to create the 3d environments? Are they all done in ...
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1answer
273 views

On 3d ripper DX and other 3d asset tools that can help boost 3d artists learning

Aside from 3d ripper DX does anyone know any other 3d asset tools to help 3d artist in learning modelling and/or animations.
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1answer
56 views

Turn the front wheels of a car according to the car's bezier path

I have a 3D car which follows a predefined 3D Bezier path. I want the car's front wheels' rotation to match the car's changing direction. I had the idea to match the wheel's orientation to the ...
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1answer
55 views

How to make a textured tree model outside of unity that can be used in unity

So I am trying to make a 3d model of a tree that is textured that can be used in unity. So far I have tried two separate ways to do this and they both didn't work. The first time I used blender's tree ...