Refers to games or art assets built in a three-dimensional space, where all positions have X, Y and Z coordinates.
0
votes
0answers
274 views
C# XNA 4.0 multitextured cube [closed]
So I am following this tutorial on how to draw a cube in XNA and I ran into a problem. Ok so my shader can only have texture right? I need to have a texture on the front and back of my cube. So I ...
3
votes
3answers
365 views
fast 3d point -> cuboid volume intersection test
Im trying to test whether a point lies within a 3d volume defined by 8 points. I know I can use the plane equation to check that the signed distance is always -1 for all 6 sides, but does anyone know ...
0
votes
1answer
131 views
Greiner-Hormann clipping problem
I have a set of planar polygons in 3D space defined by their vertices in counterclockwise order. Let's define the 'positive face' as being the face of the 3D polygon such as when observed, the ...
4
votes
1answer
293 views
Calculating a child object's Position, Rotation and Scale values?
I am making my own game editor, but have encountered the following problem:
I have two objects, A and B.
A's initial values:
Position: (3,3,3), Rotation: (45,10,0), Scale(1,2,2.5)
B's initial ...
3
votes
1answer
237 views
Best way to Draw a cube for 3D Picking on a specific face
Currently I am drawing a cube for a game that I am making and the cube draw method is below. My question is, what is the best way to draw a cube and to be able to easily find the face that the cursor ...
0
votes
1answer
68 views
Vector transform equation explanation
I'm trying to understand the maths of moving points in a 3d space by making a game written in C#.
I'm looking at this wolfire blog series which explains some basic 3d maths. I've read the first two ...
1
vote
2answers
97 views
How do I apply a force using the object direction and speed?
I have a 3D object moving and I need to be able to apply forces to it such as gravity. In 2D, I would simply store its movement in dx and dy, but since this is in 3D, I am using a Vector3D direction ...
3
votes
1answer
261 views
Panning a 3d viewport in 2d direction with rotated camera
I am using below code to pan the viewport (action script 3 code using flare3d framework)
_mainCamera.x-= Input3D.mouseXSpeed;
_mainCamera.z+= Input3D.mouseYSpeed;
Where as Input3D.mouse[X|Y]Speed ...
2
votes
3answers
319 views
Maya 6 vs Maya 2013
I have the entire "Learning Maya 6" books that I purchased back when Maya 6/6.5 was the hottest thing. I read some of the books but never finished the series. I don't know much about Maya or the ...
3
votes
2answers
293 views
3D rotation matrices deform object while rotating
I'm writing a small 3D renderer (using an orthographic projection right now).
I've run into some trouble with my 3D rotation matrices. They seem to squeeze my 3D object (a box primitive) at certain ...
3
votes
3answers
134 views
Determining a point that reached another point
I have two points, one is moving and one is stationary. I would like to know if the moving point has reached that point or not. I tried to calculate the distance between two vectors and the distance ...
3
votes
2answers
321 views
Scan-Line Z-Buffering Dilemma
I have a set of vertices in 3D space, and for each I retain the following information:
Its 3D coordinates (x, y, z).
A list of pointers to some of the other vertices with which it's connected by ...
0
votes
2answers
192 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 ...
0
votes
2answers
450 views
OpenGL, objects disappear at a certain z distance
I'm writing a managed OpenGL library in C++, and I'm having a pretty annoying problem. Whenever I set an objects Z coordinate to -2.0 or lower, the object disappears. And at coordinates 0 through ...
2
votes
1answer
259 views
OpenGL Fast-Object Instancing Error
I have some code that loops through a set of objects and renders instances of those objects. The list of objects that needs to be rendered is stored as a std::map>, where an object of class ...
15
votes
2answers
807 views
What's the difference between mesh and a model?
Which one is created first? For example if a team worked on a graphical asset of a car, what would be a model and what would be a mesh of the car?
2
votes
2answers
239 views
Rotating a child shape relative to its parent's orientation
When rotating a shape using a quaternion value I also wish rotate its child shape.
The parent and child shapes both start with different orientations but their relative orientations should always be ...
4
votes
2answers
235 views
How do I use D3DXVec3Unproject with D3D11?
I'm having a small issue with D3DXVec3Unproject. I'm currently using Direct3D 11 and not 10, and the signature for this function is:
D3DXVECTOR3 *pOut, CONST D3DXVECTOR3 *pV, CONST D3D10_VIEWPORT ...
1
vote
1answer
351 views
Rendering a 2D Sprite in 3D space
I am currently working on a game in XNA 4.0 where I want to implement 2.75D, like in Paper Mario. I feel like it has something to do with z-buffering a Texture2D and drawing that, but I really have no ...
0
votes
1answer
99 views
What's the standard location of a 3D clipping box?
The way I understand 3D rendering, polygons are transformed using several matrices, and they are then clipped if they are not inside a certain box, before projecting the box onto the screen. Before ...
4
votes
4answers
719 views
Do 3d assets cost a lot more than 2d?
I'm planning to create a game on my own and will most likely hire an artist in the future. I just want to know if making a game in 2d will a lot cheaper than making it on 3d?
Here's my plan:
If it ...
1
vote
1answer
238 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 ...
1
vote
2answers
681 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 ...
5
votes
4answers
246 views
Would like some help in understanding rendering geometry vs textures
So I was just pondering whether it is more taxing on the GPU to render geometry or a texture. What I'm trying to see is whether there is a huge difference in rendering two scenes with the same setup:
...
9
votes
3answers
319 views
Are the first 3 parameters that describe a 3D plane actually a 3d vector?
A 3d plane is typically defined as a,b,c,d. Are a,b,c actually the x,y,z coordinates of a 3d vector, with d defining the rotation of the plane, something like axis-angle rotation data?
-1
votes
1answer
437 views
UDK or Unity3D? [closed]
I was thinking which is better, UDK or Unity3D. The graphics of UDK is really awesome and better than Unity. So I was also thinking about the programming language they use but I'm using mac so I also ...
2
votes
2answers
1k views
Rotate sphere in Javascript / three.js while moving along x/z plane
I have a sphere/ball in three.js which I want to "roll" around on the x/z plane. For the z axis I could simply do this no matter what the current x and y rotation is:
sphere.roll_z = ...
3
votes
2answers
349 views
Triangle Line-Segment Intersection - detecting near misses
A ray is a very poor approximation of a player! I think approximating a player with a sphere traveling a straight line each game tick will solve my problems of the player intersecting edges of ...
4
votes
3answers
633 views
List of 3D libraries based on WebGL
Is there a up-to-date list of WebGL libraries or articals with comparison?
Until now I heard only tree.js and GLGE.
4
votes
1answer
227 views
Techniques for displaying vehicle damage
I wonder how I can displaying vehicle damage.
I am talking about a good way to show damage on screen. Which kind of models are common in games and what are the benefits of them? What is state of the ...
2
votes
1answer
220 views
Does XNA 4 support 3D affine transformations for 2D images?
Looooong story short I'm essentially trying to code Mode 7 in XNA. Before I continue bashing my brains out in research and various failed matrix math equations; I just want to make sure that XNA ...
0
votes
2answers
166 views
AS3 Stage3D Mouse click problem?
I have a problem with Mouse interaction and Stage3D.
The only way I found to register to listen to mouse clicks and interact with Stage3D, is to add a mouse eventListener directly to the .stage.
...
3
votes
1answer
169 views
How can I generate a 3d model via a series of transforms?
Is it possible to generate 3D models using some sort of object transformation (like it's shown here), using PovRay or any other tool, and import them into Blender / Unity?
For example starting with a ...
6
votes
3answers
319 views
Why doesn't light continuous on my model?
I created a basic textured cube model with Blender to practice modeling, and then I imported it into Unity. After I put up some lighting it looks pretty ugly. The light is not continuous on a row of ...
1
vote
1answer
182 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);
...
0
votes
0answers
308 views
3D Graphics with XNA Game Studio 4.0 bug in light map?
i'm following the tutorials on 3D Graphics with XNA Game Studio 4.0 and I came up with an horrible effect when I tried to implement the Light Map
http://i.stack.imgur.com/BUWvU.jpg
this effect shows ...
-1
votes
2answers
388 views
2D animations frames vs 3D animation for small indie project: timing considerations
pretty lame question but was wondering..
I am developing a 2D game using Cocos2D for iOS. The art work till now is all 2D (is a shooter game) but some of the characters would benefit of complex ...
9
votes
5answers
17k views
Visual Studio 2012 and Game Development
Alright, I think it's a simple question, but I got difficulties to find some answers around.
I already read that XNA wouldn't be in Visual Studio 2012. I recently learned to use XNA, but since I ...
3
votes
2answers
205 views
Rotating voxels in 3d space amongst the x axis
I have a very simple voxel engine and so far it works based on coordinates, e.g. x, y, z. I was wondering if there is a formula for rotating groups of voxels/coordinates from the x axis(e.g. [0, 1, ...
8
votes
2answers
291 views
Render 3d object to 2d surface (embedded system)
i am working on an embedded system of a sort, and in some free time i would like to test its drawing capabilities.
System in question is ARM Cortex M3 microcontroller attached to EasyMX Stellaris ...
-1
votes
1answer
742 views
Asset missing problem XNA
I'm using VS2010 with XNA 4.0 and I'm trying to load an FBX model with texture on the screen. The problem I'm having is this error:
Missing Asset: C:\Users\ChocoMan\Documents\Visual Studio ...
1
vote
0answers
37 views
How i can sign and/or group a specific set of vertices in a 3D file container like OBJ ? - in Blender
I would like to export a 3D model with each part having a name or a label if you will.
For example i would like to export a model of an human body and name each part in specifics vertex groups like: ...
3
votes
2answers
196 views
How to reconcile depth ordering with minimal shader context changes?
We generally want to minimise shader-program switches (glUseProgram and all associated context changes) for the sake of performance. AFAIK it is not uncommon to render by shader program, i.e. group ...
0
votes
2answers
195 views
In need of Game Development Industry guidance [closed]
Sorry if there is already a question like this, i searched but didn't found the answers i'm looking for. I need advice on what should i focus more and where i should start, i need a plan. Currently ...
5
votes
1answer
737 views
GLSL, all in one or many shader programs?
I am doing some 3D demos using OpenGL and I noticed that GLSL is somewhat "limited" (or is it just me?). Anyway I have many different types of materials. Some materials have ambient and diffuse color, ...
1
vote
2answers
659 views
Where to attach global scripts in Unity?
As far as Iknow in Unity, every script must be attached to an object. But what is the case with global scripts? For example in a tetris-like game to which object should I attach the element spawner ...
0
votes
1answer
489 views
Fast Updating of Large Amounts of OpenGL data
I'm seeking advice, suggestions, and ideas on how to handle the updating of large amounts of data in OpenGL and c++.
My partner and I have gone through two methods.
The first is vertex by vertex ...
2
votes
1answer
2k views
Should I use XNA or Unity to build a video game? [closed]
My friend and I are planning to make a video game (like Slender) where the character is stuck in a building, when lightning strikes, and the lights go out and your objective is to find the back-up ...
1
vote
1answer
345 views
Why do my pyramids fade black and then back to colour again [closed]
I have the following vertecies and norms
GLfloat verts[36] = {
-0.5, 0, 0.5,
0, 0, -0.5,
0.5, 0, 0.5,
0, 0, -0.5,
0.5, 0, 0.5,
0, 1, 0,
-0.5, 0, 0.5,
0, 0, -0.5,
0, 1, 0,
0.5, 0, 0.5,
-0.5, 0, ...
1
vote
1answer
202 views
Highlight edge on 3d cube in directx
I want to make a 3d editor in DX9/XNA for a project I'm working on. I'm just thinking through how I would go about certain tasks and I'm stuck on one particular thing, which is crucial to making the ...
