3D refers to three dimensional space where coordinates are represented with X, Y and Z values.

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6
votes
1answer
216 views

How can I extrude a regular, grid-based 2D shape to 3D?

I have a list of vertex coordinates which encircle several 2D areas. Orthogonal lines only, but not necessarily convex areas... similar to PCB traces of conductive copper areas. I want to draw them ...
0
votes
1answer
139 views

Why there are no 3D games which allow you to move? [closed]

I've tried many 3D augmented reality games animations vs. all of them were based on this concept: your head is on one reference point, standing still, they only allow you to turn your head and look ...
2
votes
1answer
66 views

How to make the inside of a cube accessible

I have a cube, it is made up of smaller cubes each making the big cube 8x8x8. The cube is the map. The player of the game needs to be able to appraise the entire map and understand it without having ...
1
vote
0answers
78 views

Point Light shows black box & rect (PointLight not working) - libgdx 3D

I am creating a 3d scene currently a box and rect, and trying to enable lighting. When i create a PointLight and add it to Environment everything turns to black color? all i want to do is ...
0
votes
1answer
90 views

Rotations of a Rubik's cube

I made a Rubik's cube by arranging smaller cubes. Now I want to apply animations to it. For that I am choosing to use the Rotate class and set the angle of rotation and the axis of rotation,like this ...
0
votes
1answer
56 views

Rotation of a cube

I came across the statement "rotation about a pivot and an axis" in javafx. The axis is defined byPoint3D and the pivotX, pivotY and pivotZ are of double type. I could not form a relation about what ...
2
votes
1answer
118 views

Finding pitch/yaw values from lookat vector

I have a camera class that contains a position, a pitch, and a yaw (the pitch and the yaw correspond to y and x rotation values). I want to implement a lookAt function that takes a vector and the ...
-5
votes
2answers
130 views

The Power of 2D Engines vs Modern 3D Games [closed]

I'm toying around a lot with Game Maker. I really like it. GML is very simple and with its nearly object oriented design you could create anything in 2D you can think of. However there is a limit. ...
4
votes
2answers
198 views

How do I induce collision events in LibGDX 3D?

In the code below I've put an example of something I want to do. I have the camera and I want it to stop moving whenever it hits one of the boxes, how do I do this? public class Main extends ...
1
vote
0answers
22 views

Maya users; how can I create my own particle emitter in Maya?

(Originally posted in the Programmers Stack Exchange, but was told to ask here instead. Whoops.) Before you answer this with "well, use the built-in particle emitter", read further. For one of my ...
0
votes
1answer
63 views

World Space Normals Are Black

My world space normals appear fine for most of a mesh. However, some of the normals are black. I was wondering if anyone had any ideas why this is. This happens for any mesh, not just this sphere. ...
2
votes
1answer
64 views

Creating or saving model (.fbx or .stl) file in XNA

I have drawn a 3-D Sphere in XNA with the help of vertices (without fbx file). Now I want create a .fbx file or .stl file of this 3D sphere from XNA, is there any way to do this? or how can I save ...
1
vote
1answer
80 views

Display mesh in front of camera

Im trying to display a mesh in front of the camera and FACING the camera ( I'm developing an small editor in wpf using helix3d). Pretty much something like this question I load my mesh into a ...
5
votes
2answers
189 views

Drawing circles at the background of a 3D scene and updating their size

So, here is what I am trying to do in Unity 5 (using C#). I want to draw a a 2D circle at the background of a 3D scene and apply a texture/image to fill it. Just like it would be if the circle was in ...
0
votes
1answer
92 views

Strange artifacting with textures (Pseudo 3D)

I'm using SFML to make a pseudo 3d engine (Technically not software rendered since SFML uses OpenGL) and things are going rather swimmingly, but then I tried to make another wall, the picture says ...
1
vote
1answer
98 views

How to calculate a vector for multi-axis rotations from sphere coordinates?

I'm working on a SceneKit project in iOS, trying to rotate a sphere (representing a planet) so that a point at a given longitude/latitude coordinate is facing "forward" (i.e. that point moves to the {...
4
votes
1answer
307 views

Hierachical Z-Buffering for occlusion culling

I'm reading the Occlusion Culling section in Real-Time Rendering 3rd Edition and I couldn't understand how it works. Some questions: How does having a "Z-pyramid" contribute? Why do we need multiple ...
-2
votes
1answer
106 views

How do I get into 3D Java game development? [closed]

I have learned how to make a 2D game in Java using Eclipse and processing but I am not sure how to do 3D game development. I have tried looking up examples of how to do this but I have not found any ...
1
vote
0answers
36 views

Matrix stack from direction vector chain

I've implemented an IK system for a grabber arm based on several straight segments, starting from a fixed point. The IK is based on a mass-spring simulation, which eventually rests. What I'm left with ...
1
vote
1answer
93 views

Is it ok to use polymorphism as a way of “interfacing” with objects in a scene? [closed]

I'm designing a class that holds values representing a 3D scene. This includes lights, cameras, meshes, materials, etc. The way how I'm setting it up is that each "thing" has a name. A camera has a ...
2
votes
1answer
149 views

How can I optimize block rendering in an OpenGL game?

I am working on a game with blocky graphics -- similar to Minecraft. My world generation algorithm is similar to the Diamond-Square algorithm. The terrain was initially too rough and uneven, so I ...
1
vote
1answer
55 views

When making 3D model for building, is it better to split it or combine it? [closed]

As the title say, when making 3d model for building (example: school, office, etc). Used for FPS game so it must have detail and texture must be vary so it won't look like repeating/reused. Is it ...
0
votes
0answers
74 views

Tweening back from arbitrary 3D rotation in javascript

I'm using a 3D javascript library to rotate the vertex of a 3D object with a classic 3x3 matrix, to an arbitrary angle in the 3D space, as depicted in the image below. For example, a first ...
1
vote
0answers
25 views

Ericsson compression for normal and bump maps

how does ETC2 fares when compressing normal maps and bump/height maps? Since we are talking about using an algorithm created for visual fidelity, applied to vector and numerical data ⃰ I'm quite sure ...
1
vote
1answer
178 views

How do you rotate all the objects around the camera?

If I'm correct, the way that you can "look around" in an environment is that you rotate all the objects around the camera. This is the code that I've created using JavaFX 3D. So what's the algorithm? ...
1
vote
2answers
57 views

Where could i find 3d items in 3d points array?

I've been reading a lot but i can't find any answer, evenmore, English is not my main language so i don't even know how to ask it correctly. I'm currently working on a 3D render engine on JS and ...
2
votes
0answers
54 views

3D Zoom To Mouse Cursor accounting for Change in Camera Pitch

Overview: Simply put, I'm trying to make a zoom to cursor algorithm. This would normally be very simple, but the implementation of the camera is making it difficult. As the camera zooms in and out, ...
2
votes
0answers
58 views

Custom 3D Renderer: Frustum clipping

I have recently been toying with the idea of creating a 3D-renderer from scratch and, after looking into it, doesn't seem like such a behemoth of a task as it sounds. Last night, I was tossing and ...
1
vote
2answers
76 views

opengl z index changing does not zoom in

I am making a simple opengl application where I have a cube and I want to move forward to it with the glTranslate3d function, where I change the z index. One would expect the object to get bigger ...
3
votes
0answers
93 views

Is there a 3d game engine without a built-in physics engine? [closed]

I know about jMonkeyEngine, Ardor3D, etc. Yes, I've also heard of LWJGL and OpenGL (the both are essentially the same, though) but neither of them really suit me. I don't want to deal too much in the ...
1
vote
0answers
162 views

How can I shoot an arrow if I know the shot power and target?

I am trying to shoot an arrow at a target with a 100% success rate. Given the initial force applied to the arrow, the gravity, the location of the archer, and the location of the target, how can I do ...
6
votes
2answers
128 views

Shading Languages vs Materials in 3D editors

There are many 3d packages which are able to construct materials. Autodesk Maya, 3ds max, Houdini, etc. There are languages which are able to construct materials as well, like GLSL and Cg. How does ...
3
votes
2answers
220 views

How to animate a character with props in Blender and then have these props modifiable in Unity3D?

I have created a fully rigged and fully animated humanoid model in Blender with rigging based on Unity's Mecanim standards for humanoid models. Now, I want to create custom animation for it in ...
1
vote
1answer
37 views

Unity object stuck where it shouldn't

Here's the thing. I am making a 3D top-down game about cars on the road. Right now I have different-colored cuboids representing cars. They are position-locked in Y and rotation-locked on all three ...
2
votes
2answers
57 views

Strange behavior with transformation matrix

I'm fairly new to transformation matrices. I'm using them to translate and rotate nodes and their child nodes. The following code works when applied once, but shows strange behavior when applied many ...
2
votes
0answers
47 views

Possible to make/use a “preset animation” on multiple 3D characters?

So im new into game developing, so I'm sorry if this is a stupid question. The thing is, that I'm currently making a game, and I'm done with my 3D characters. The only thing that is left, are the ...
3
votes
1answer
106 views

How to load multiple 3D models dynamically xna

I want to load multiple 3D models .fbx at the same time in my map display. I can load First Model but when I use ContentBuilder to Load another Model, I Got Error in effect.EnableDefaultLighting (); ...
5
votes
0answers
152 views

How do i find the circumsphere of a tetrahedron?

I'm looking for the most minimized equation to find the center coordinates and the radius of a tetrahedron circumsphere given four 3D points. What I found on the internet mainly deal with the circum ...
3
votes
2answers
90 views

Putting items into a 3D space

Imagine a fridge and a bunch of random foods. I want to take one food item, automatically put it somewhere in the fridge, and repeat. I can stop at any time. Basically, the filled fridge should look ...
5
votes
2answers
766 views

Is there an efficient way to identify in which run-time generated room a character is, in a non-grid 3D environment? How?

Here is what I am trying to implement. I wrote a script that allows the player to place walls during run-time, in non grid-based 3D environment (walls can be diagonal with rotation increasing/...
1
vote
0answers
30 views

How to use quaternion on another referential

I'm new on Three.js and despite a mechanical background, I can't find how quaternion works: it's like it always refers on local part referential and not the global one. I've illustrated it here : ...
1
vote
0answers
27 views

Add UVs back into a model

I built a 3D model in Autodesk 123d design, then exported it as an stl. When I convert it into an obj, however, there were no UVs in it. Is there a way I can add the UVs back into the model using a ...
1
vote
1answer
69 views

Texture not working on object

I have a project that I'm having a bit of trouble with. Let me try and explain. In short, I'm trying to apply a texture to an object, but instead it is a solid color. I built a building in "Autodesk ...
3
votes
1answer
761 views

masking with 3d object in unity

I have a 3d plane in my scene and some 3d objects behind that plane. So, i want to render only the part behind the 3d plane. So how should I do this, should I have to use custom shaders, plz help.
3
votes
1answer
189 views

How can use a 3D map with 2D characters (Unity)? [closed]

I tried to search something about it but I can't find any complete or well-explained tutorials about how to use a 3D map with 2D characters and items, like Ragnarok or Final Fantasy Tactics. If there ...
2
votes
1answer
53 views

Texturing curves in blender

Im making a tree in blender with the sappling add-on, i've already textured the leaves, i want to know how to texture the trunk with a bark texture. Im using cycles render. Thanks in advance. :)
1
vote
1answer
75 views

XNA Get model height in location

I am trying to make simple RTS game, and here is the problem I encountered. I need to get model height in any position. Model will not be rotated or scaled. For example, I have a terrain model like ...
1
vote
2answers
91 views

Calculating the vector to catch a falling object

I have two objects in a three dimensional world. One is a ballistic projectile: that is, it is free-falling with some known gravitational acceleration. The other is a catcher that travels with ...
1
vote
0answers
62 views

Perspective correct texture mapping in iOS Metal

I tried various ways of getting the interpolation work and generate a perspective correct image, but none of the suggested ways works. My current code is: struct VertexStruct { float4 ...
1
vote
1answer
154 views

How to not render what is behind object?

I am working on a 3d project using openGL. I am looking for a way to optimize my renderings. Is there a way to tell if an object is behind another object and thus not visible to not waste time ...