Refers to games or art assets built in a three-dimensional space, where all positions have X, Y and Z coordinates.
4
votes
1answer
279 views
apply non-hierarchial transforms to hierarchial skeleton?
I use Blender3D, but the answer might not API-exclusive.
I have some matrices I need to assign to PoseBones. The resulting pose looks fine when there is no bone hierarchy (parenting) and messed up ...
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 ...
2
votes
1answer
260 views
3ds Max CAT to XNA
Has anyone successfully used the CAT bone system in 3ds Max and exported the file into XNA? If so, what was your method of doing so?
There are a number of methods of doing this apparently, but the ...
1
vote
1answer
166 views
What can i use as a 3d Tile map editor?
I need to make grid based levels with 3d models for a dungeon crawler ( as a recent example Legend of Grimrock), but i need to have several layers and place entities with properties and position, ...
0
votes
1answer
52 views
Need help with a complex 3d scene (using Ogre and bullet)
In my setup there is a box with a hole on one side, and a freely movable "stick" (or bar, tube). This stick can be inserted/moved through the hole into the box. This hole is exactly as wide as the ...
0
votes
1answer
162 views
Normalizing the direction to check if able to move
i have a a room with 4 walls along the x and z axis respectively. My player who is in first person (therefore the camera) should have collision detection with these walls. I'm relatively new to this ...
0
votes
1answer
158 views
Using bone joints
I am trying to save bone joints to a file, and am using this format. I was wondering if anyone could clear up a few questions I have
why do I need to provide rotation data for the bone, if I already ...
0
votes
1answer
149 views
Alternative to Misfit Model 3D on OSX?
Usually I would use MisfitModel3d to model, but I've recently moved to OSX, and I can't get it to compile. I have blender but it doesn't have a mm3d or ms3d exporter (Well, it has a ms3d exporter, but ...
-1
votes
1answer
49 views
GLES2 rendering performance for different iPad generations
I'm using C++/GLES2 for iPad only (no iPhone). The only device I own is an iPad2 and I do not plan to support iPad 1.
Can anyone help me understand realistic goals/limits on iPad 2/3/4 in terms of ...
-1
votes
1answer
809 views
Isometric screen to 3D world coordinates efficiently
Been having a difficult time transforming 2D screen coordinates to 3D isometric space. This is the situation where I am working in 3D but I have an orthographic camera. Then my camera is positioned at ...
4
votes
0answers
226 views
How to generate portal zones?
I'm developing a portal-based scene manager. Basically all it does is to check the portals against the camera frustum, and render their associated portal zones accordingly.
Is there any way my editor ...
3
votes
0answers
189 views
Suitability of ground fog using layered alpha quads?
A layered approach would use a series of massive alpha-textured quads arranged parallel to the ground, intersecting all intervening terrain geometry, to provide the illusion of ground fog quite ...
3
votes
0answers
204 views
Recast issue while loading BSP
I'm trying to load a BSP into RecastDemo to see if it works fine, I don't know where the problem could be, I'm extracting the vertices and triangles really fine.
The result is supposed to look like ...
2
votes
0answers
27 views
Cinema 4D to Android and IOS SDK
how can i convert Cinema 4D animation or models to use in games for android and IOS SDK?
or what kind of format is required for SDK games?
if i make a dancing character, do i need to make separate ...
2
votes
0answers
36 views
UDK Modular construction (customisable vehicles etc)
I'd like to build an interface whereby the user can attach various components and blocks onto a vehicle, this is then saved (as object/coordinate, rotation, scale values - in database) and can be used ...
2
votes
0answers
90 views
Displacement Mapping opengl-es
I need to do an application similar to this Morfo. And I posted a question here where the answer states the solution is "Displacement Mapping" . And I googled this to do it in opengles. I couldnt get ...
2
votes
0answers
159 views
Catmull Rom Spline - Constant Speed
Given the equations found in the answer here:
Determine arc-length of a Catmull-Rom spline
How would one A) Apply this to a 3D Catmull-Rom Spline, and B) write A out programmatically (for the math ...
2
votes
0answers
230 views
Where is the Shader Designer?
I have VS2012 Ultimate and I've been trying to access (find) the Shader Designer. I searched through MSDN's text and Channel9's videos, but they keep failing to mention how to access it...
Can ...
2
votes
0answers
79 views
Converting obj data to CSS3D
I found a ton of formulae and what not, but 3D isn't my forte so I'm at a loss of what specifically to use. My goal is to convert the data in an 3D .obj file (vertices, normals, faces) to CSS3D ...
2
votes
0answers
135 views
Portal View/Projection Matrix near plane
For RenderToTexture/Camera based portal rendering, the basics seems simple enough.
However, with a free camera, most of the time it is going to be looking at such portals at an angle:
Now a ...
2
votes
0answers
364 views
Import 3ds into JMonkeyEngine 3
I have asked this question on SO, but I think it will be more suitable here.
Basically, we are trying to import an animated character body (with skeleton) from 3D Studio Max to JMonkeyEngine 3, but ...
1
vote
0answers
29 views
Blender: calculation of elevation and rotation angle from plane
I have a generic plane (any location, any rotation around every axis) with its normal axis passing by the center. Then I have a generic point and I need to find the elevation and the rotation angle ...
1
vote
0answers
108 views
How can I implement collision for a “pseudo-3D” game?
I'm looking for high level implementation details, not specifics.
I've worked with bounding boxes before in some 2D games, but I'm currently tackling a "2D + depth" (2.5D?) style game along the lines ...
1
vote
0answers
62 views
Moving an object (pong paddle) along the x,y axis in 3d-space with mouse/touch
First of all: Sorry, my English isn't quiet good, I'm very new in 3D and I'am using JMonkeyEngine.
What I would like to do?:
A 3d pong game and I want to control the paddle with the mousecursor ...
1
vote
0answers
125 views
UDK: Animating characters with weapons
I imported a custom character and a pistol model to UDK and both work, but the pistol doesn't appear with the animation of the pistol when I shoot or reload... Also, the character doesn't change its ...
1
vote
0answers
35 views
iSGL3D Occlusion Culling
I was testing a cool 3D Scene Graph Library called iSGL3D. Since I found some functions called alpha culling for displaying partly hidden objects (making the ones in front transparent). I was ...
1
vote
0answers
136 views
vector projection in 3D
p0, p2, p3, p4 are points in 3D and are connected on a straight line where p0 and p4 are fixed. How to find the normal at p2 and p3?
1
vote
0answers
60 views
2D map/plane with nodes overlayed that supports panning, scaling and clicking on nodes
I'm trying my hand at Android development and seem to be running into an invisible ceiling in trying to get what I want accomplished. Basically I'm trying to create an app that renders a 2D surface ...
1
vote
0answers
246 views
How to pick a 3D object with known mouse coordinates if the camera is rotated 60 degrees?
I am making a simple game engine for a simple RTS game and would like to be able to pick a cube and move it around with the mouse coordinates. The problem is that my camera is rotated 60 degrees just ...
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: ...
1
vote
0answers
407 views
Microsoft XNA code sample wont work with blender model
I downloaded this code sample and integrated it into my game
http://xbox.create.msdn.com/en-US/education/catalog/sample/mesh_instancing
It works with the model that they supplied, but throws and ...
1
vote
0answers
138 views
BSPs, Octrees and modern graphics hardware
I have read a lot of literature on BSPs, Octrees and like. Problem is that it is all old literature from software rendering time. Nobody describes how it is implemented today. So here is my idea how ...
1
vote
0answers
475 views
How to turn a 3d camera (in HTML5 2D Canvas)
A few years back I started experimenting with 3d in canvas. Everything went pretty well untill I had to to turn the camera, I couldn't get it done.
A few days back I just happened to stumble upon ...
1
vote
0answers
91 views
Ardor3D creating items such as guns…?
I am using Ardor3D as a game engine, but I can't seem to find anything anywhere about creating items that the player holds. My game is in first person. I want to make a gun that is always visible on ...
1
vote
0answers
354 views
3d collision detection on non flat surface
i am developing a game which needs an accurate collision detection algorithm, when a object travels down a slope which isn't flat. To be more precise i need to simulate a skier who travels down a ...
0
votes
0answers
245 views
How to do collision detection in 3D using bounding boxes?
I am using c++ in visual studio 2010 with opengl. I am trying to make a programme that has 2 boxes that are able to be stacked on top of each other but I am having some trouble with the collision ...
0
votes
0answers
94 views
Terrain Multi-texturing Approaches
I've read numerous articles about how to render terrain and most of them approach it from a vertex/polygon perspective with respect toward level of detail. But what I continue to find myself ...
0
votes
0answers
102 views
How to create 3d picking ray with the cursor position
I'm new here and I'm not sure how to go about doing this. I am creating an application that is supposed to use the cursor's position in the window to perform 3d picking. The tutorials I have found ...
0
votes
0answers
93 views
How to Detects two markers at time using Vuforia SDK
I recently has been watch this Video, and this is good to know that its developed by qualcomm. I want to do same sort of project in Unity3d, I already have developed few apps using Vuforia SDK. Before ...
0
votes
0answers
87 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
0answers
238 views
Cocos3d lighting problem
I'm currently working on a cocos3d project, but I'm having some trouble with lighting and I have no idea how to solve it. I've tried everything and the lighting is always as bad in the game.
The ...
0
votes
0answers
273 views
3D texture coordinates for a cube
I want to use glTexImage3D with cube. what will be the texture coordinates for it? i am using GL_TEXTURE_3D as target. I tried with u v coordinates same as 2d texture coordinates with z component ...
0
votes
0answers
259 views
What is the best way to implement collision detection using Bullet physics engine and a track generated from a curve?
I am developing a small racing gam, the track is generated from a curve.
As said above, the track is generated, but not infinite. The track of one level could fit with no problem in memory and will ...
0
votes
0answers
306 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 ...
0
votes
0answers
77 views
java find intersection of a block with a surface in 3D space
This question is a copy of the following question on SO. I posted it here after a suggestion from guys at SO.
Hi,
At the moment we have a bunch of 3d blocks (think cubes) that are imported in a ...
0
votes
0answers
194 views
DirectX/OpenGL materials -> Blender materials?
I'm writing an importer for a format with standard DirectX materials.
The material values are:
diffuse - r,g,b,a (floats)
ambient - r,g,b,a (floats)
specular - r,g,b,a (floats)
emissive ...
0
votes
0answers
213 views
Map 3D space to 2D screen space?
Could some one help me to understand this code and explain it?
It's about converting from 3D space to 2D position, so that I can use it in another Effects (.fx) files, but I am a bit confused.
float ...
0
votes
0answers
124 views
way to do if(x > x2) x = x2 with rotation?
Alright, so I got this walking code, and some collision detection, now the collision detection returns a Vector3f of the closest point on the triangle that the projected position is at (pos + move), ...
0
votes
0answers
181 views
iOS : Creating a 3D Compass
Originally posted here: iOS : Creating a 3D Compass
Hi everybody,
Quite new in this forum.Posted the same question in stackoverflow and there some people suggested to shift it here, so that I can get ...
0
votes
0answers
228 views
How do I keep a 3D model on the screen in OpenGL?
I'm trying to keep a 3D model on the screen by placing my glDrawElement functions inside the draw function with the declarations at the top of .cpp. When I render the model, the model attaches it self ...
