Refers to games or art assets built in a three-dimensional space, where all positions have X, Y and Z coordinates.
-1
votes
0answers
79 views
How can I make my 3D models load faster? [on hold]
My 3D fighting game's load times are already pretty high, even though it's early in development.
The 2 models are...
The Character - A 3D model of 'Super Mario' which is 777 KB, or 1.27 MB including ...
0
votes
2answers
66 views
Quaternion Rotation Help
So I'm making a little engine with DirectX 11 and C++. (Some other help from other API's as well) DirectX has this function XMMatrixRotationQuaternion(XMVECTOR quaternion). I know nothing about this ...
-1
votes
0answers
37 views
What are the different parts to make a 3D game? [on hold]
This question may sound stupid, but please answer it:
My question is what kind of separate parts are needed to make a (real-time) online multiplayer 3D game
There are different parts to combine to ...
1
vote
0answers
23 views
XNA: Working with primitives and tessellation [on hold]
I was working with primitives in XNA (since I have limited knowledge with 3D and modelling), and I have 3 similar questions below:
Question 1
I was reading up on terrain tessellation in an article ...
-1
votes
0answers
50 views
Elite-on the NES [on hold]
I'm not from a programming background, i am from a 3D animation back ground and i like to know how things work. So now onto my question, the 3D wireframe game Elite, there is a version for it for the ...
0
votes
1answer
93 views
Finding a vector perpendicular to a current vector
Assume, that we have a player that has a vector direction. We have an enemy, that is shooting a player. And the task is to find out from which side the enemy is shooting. I know the algorithm, how to ...
0
votes
1answer
41 views
Mouse interface for 3d environment with camera [closed]
I'm programming a 3d environment with a camera, and need to decide what the mouse will do. There are several possibilities e.g.
Rotate the camera
Move the camera
Move an object
Rotate the ...
0
votes
0answers
54 views
X, Y, Z rotation around camera
I'm making a 3d orthogonal-projected, game using painters' algorithm in java.
I'm able to rotate the objects with incremental rotations (e.g. rotate all objects 10 degrees) using affine ...
0
votes
0answers
41 views
What 3D file format should I implement that can be exported from Blender, isn't terribly difficult to parse, is fast, and supports animations? [closed]
For a "fun" side project, I'm implementing a game engine in Go and would like to add animated 3D models. I've been very much focusing on other technical aspects of the engine, so right now models are ...
0
votes
1answer
72 views
More vertices vs more textures
I'm currently working on a dynamic 'door' creator, and I'm trying to decide which is more efficient. Not much experience with 3D render speeds, so I'm asking before I choose which direction to go ...
2
votes
1answer
59 views
Colision detection of disc (Maximum Material Condition aka “Flatness”)
I have a 3D-laser scanner which gives me a series of points of a real-world object. The points are related by a common origin.
I know I can derive the equation of a plane from 3 points and that the ...
3
votes
3answers
115 views
2 component unit vector
Is it possible to store a 3d unit length vector with only 2 components, for example as coordinates on a unit sphere? It seems possible but I have never seen anyone do this. Would this be at all ...
1
vote
2answers
94 views
Unity plane that is normal to Z axis
I want to create a plane that will be normal to the Z axis, but I am having difficulty visualizing what rotation it needs to have.
I want to have a top-down view upon the plane such that I can use ...
0
votes
2answers
67 views
Vertical Collision Detection, Falling Through Ground
After much work trying to learn collision system theory and apply it, I've got my collision system working for the most part. The player can collide horizontally with no issue, sliding against walls, ...
1
vote
0answers
13 views
Best practice for saving content-dependent metadata? [closed]
What is the best practice (compliant with the 3D pipeline) for saving content-dependent metadata, such as barycentre?
I don't want to render the metadata, but I want to inform the users about it.
I ...
0
votes
0answers
38 views
Multiple Body Code?
I've been working on one game, 3D RPG with Ogre graphic engine and I wondered if there is a code for multiple bodies?
Currently there is only one body model and if I want to add a new one, the ...
0
votes
0answers
23 views
Wall Collision on a model
I am building a model of a house in XNA and made a collision system so that when the player goes into the wall they stop. Also I made it so if the player is pressing the key 'up' and collides into the ...
0
votes
1answer
54 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 ...
0
votes
1answer
69 views
How to calculate “real” distance between cursor and away object?
I don't really know how to formulate the title, but the problem is the following:
I'm using a scripting language called "SQF" which has been created by a company named "Bohemia Interactive" (no, I do ...
2
votes
1answer
58 views
Impact of object's statistics on the rendering
Consider two 3D objects with n points and n triangles. One of the objects has a smooth surface such as a ball or a box, and the other object is like a fuzzy onion-layered object with large ...
4
votes
1answer
110 views
Utility of submesh class in a 3d game engine?
I've read somewhere that we use sub mesh for being able to give different materials to one mesh. But why not simply do this with scenegraph ?
I mean you have a car mesh, and instead of using ...
1
vote
1answer
50 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
...
3
votes
3answers
198 views
How can I create straight, glowing lines?
What techniques are used in this style? What steps would be required to recreate it?
(Screenshot of this app: https://play.google.com/store/apps/details?id=com.dkeesto.holographlw)
1
vote
1answer
60 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 ...
1
vote
0answers
31 views
XNA HLSL UV Mapping
I was testing my hlsl lighting shader, I've copied it from a tutorial and it works perfectly, but all the meshes in the model needs to have texture coordinate, I guess this is because this part:
...
0
votes
1answer
103 views
How do I find the angle between two 3D angles represented in this form?
I have two 3D angles, represented by [a1,a2] [a1,a2] where the a2 is < 180. My coordinates are represented as [X,Y,Z], where X,Y,Z are 64 bit ints (longs in my lang). My direction angles are ...
3
votes
1answer
368 views
What is deferred lighting?
There is plenty of information on what deferred rendering is but there is a lack when it comes to deferred lighting and the information that there is there is not clear.
My question is simple, what ...
0
votes
0answers
16 views
Maya shatter collision without interpenetration
I'm a newbie in Maya and after days of Googling I still cannot find the answer to my question.
I'm making a solid shatter in Maya, as expected, the rigidbodies interpenetrate with each other. And the ...
0
votes
1answer
107 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 ...
0
votes
2answers
76 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
84 views
Find world matrix
I'm making my first 3D-game with XNA (MonoGame) and have come to a point where I wish to add a crosshair for the player. To do this I need the on-screen coordinates of the location where my fighter ...
0
votes
0answers
127 views
How do I structure my models for 3D animation?
I have a question about implementing a 3D animation system in my engine. The following is how I am attempting to model the render / animation systems.
(Note: I am using Haskell for the pseudo-code ...
0
votes
0answers
22 views
how do I know what blocks to draw in a lightweight Minecraft style game [duplicate]
I am creating a lightweight minecraft style test game in C++ using opengl es. I have come upon a problem while planning it though - what is the most efficient way to render blocks? I know about back ...
2
votes
1answer
74 views
Work flow for modelling a city(open world)
This seems like a massive task, do each individual building/object have to be modeled individually. If so are the model imported into the world editor and places accordingly.
Or are other techniques ...
1
vote
0answers
53 views
Is it possible to reverse perspective projection with simple scale and translate? [duplicate]
Basically I'm asking this question (which seems to have gone un-answered): How to do perspective projection “parallax” but without changing the scale or offset of objects?
I'm using perspective ...
0
votes
2answers
111 views
Why do we say things are rotated around the z-axis in a space graph?
I've embarked on a journey of game development. I need to learn lots of 3D terminology, since I want to make 3D games. I learned that X is to the right, Y is up, and Z is towards you. Then why when a ...
0
votes
1answer
169 views
How to approach in-game character creation system alike Sims [closed]
I would like to implement an in-game character creation similar to the Wii/Mii system or The Sims using Blender and Unity. In what ways is this possible, other than (or in conjunction with) using ...
0
votes
1answer
63 views
Can I export animated models from Unity? Into what formats?
I have an animated 3D model from the Unity Asset Store that I would like a new animator to touch up (the license allows this). But they need it in a format they can use (in Maya or... something ...
2
votes
1answer
148 views
How can I achieve a bullet tracing effect similar to the one in Planetside?
I've noticed that bullet tracers in Planetside 2 don't show up close -- every time I see them, it came from a barrel a ways away. I don't believe Planetside traces every bullet either, because then ...
4
votes
3answers
215 views
How do I resolve a sphere-triangle collision in a given direction?
I am trying my hand at game physics.
I understand that the basic way to pull back a sphere when it collided is to negate the penetration distance:
// If collided...
// `distance`: distance form ...
0
votes
0answers
34 views
JMonkey scrolling 3D text
I need to make a scrolling 3D text, which is not a gui. I have a 3d box display over which I should render a long scrolling text. I can render and move text, but how do I cut/make invisible the part ...
1
vote
2answers
77 views
Should I shade models before or after importing them into Unity?
Is it better to shade a model inside the 3D modeling software or inside Unity?
As an example, if I need to use a transparent model, should it be made transparent inside the modeling application or ...
0
votes
1answer
37 views
Picking a local origin as the centroid of given three points in 3D
Given three points non-collinear P, Q, R in 3D, I need a generic method to generate x', y', z' unit vectors that behave like origin of local coordinate system.
x' and y' vectos should be on the plane ...
5
votes
1answer
140 views
How to implement translation, scale, rotation gizmos for manipulating 3D object's transforms?
I am in the process of developing a basic 3D editor. It uses OpenGL for rendering a 3D world. Right now my scene is just a few boxes of different sizes and I am at the stage where I want to be able to ...
0
votes
1answer
118 views
How do you create a 2d world then view it in 3d?
I have been learning OpenGL for a while now and have a pretty good understanding so far.
What I would like to know is if I create a 2D game in Orthographic Projection, is it possible to switch to a ...
0
votes
0answers
49 views
How can I find the collision response between a moving sphere and cube?
I'm implementing my own algorithm for sphere and cube collision response. So far I'm able to only test if both of them overlap.
My problem is: A cube is rotating around its axes i.e x and z axes. And ...
0
votes
0answers
61 views
Closest distance from 3D point to vector line
First let's have a look at my little drawing:
I have an origin point p1 defined by x, y and z co-ordinates, and a vector v given by x, y and z magnitude.
I also have an arbitrary point, p2, given ...
0
votes
2answers
183 views
Simulating 3D height in 2D scene (also shadows)
I recently stumbled across this http://vimeo.com/99118680 video and was stunned by the beautiful painted art and colors. But mostly I couldn't believe how everything appeared to have three dimensions ...
1
vote
2answers
103 views
Find point in 3D plane
I have four points in a 3D space, example:
(0,0,1)
(1,0,1)
(1,0,2)
(0,0,2)
Then I have a 2D position on that square plane:
x = 0.5
y = 0.5
I need to find out the 3D space point of that position in ...
1
vote
1answer
124 views
Resolution independent game world in 3D
I'm developing a game similar to Don't Starve - 2D billboards in a 3D world. Now I have encountered a problem with resolutions. I want the player to be able to change resolution, but I don't want to ...
