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

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picking 3D objects rendered using instancing

i have a peice of code that renders a 3D image, say a cube. I require 3 cubes in in different locations, this is done using instancing and i am able to render the cube in 3 different locations. ...
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1answer
56 views

Recap on how a camera works in 3d Space?

This may be marked as a duplicate, but I have been trouble thinking about a camera. I understand that there is a "camera transform," or view matrix. However, this is multiplied with every vertex in ...
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28 views

Is there a 3D format that supports instanced components? [closed]

I am looking for a 3D file format that supports instanced components/objects. That is, there is one geometry declaration and then it is instanced in numerous places. Open formats are very much ...
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72 views

How does UV mapping work for the spaces between vertices?

In UV mapping each vertex has a UV coordinate, but wouldn't that just make 1 pixel for every vertex? How do you find out the texture coordinate for the spaces in between the vertices? Am I not ...
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1answer
50 views

How can I fade in 3D foliage smoothly?

Take a look at this picture: This is a picture of me diving down from a high height. As you can see, the world is a simple world with grass, snow, trees, etc. The problem here is the 3D foliage. If ...
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164 views

3D collision avoidance: finding the updated velocity vector (outside the “collision-velocities” cones)

I am trying to understand and implement the mechanism of a fully 3D collision avoidance (steering behavior) system for flight movement (six degrees of freedom), currently focusing on circumventing ...
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1answer
65 views

Multitexturing depending on given variables?

Im having trouble with rendering multiple textures. Using XNA gamestudio: working with 3D meshes and texturing. Effect.fx HLSL I do have a map/level that loads from a heightmap. - This works I have ...
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1answer
41 views

How can I implement “quality levels” for models and textures?

I'm preparing to build a 3D game without an engine and am wanting to know how I could implement graphic detail levels for my models. To do this, are the models made in the highest quality level and ...
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31 views

3D Level Navigation Map for a 2D Mobile Game

I am currently making a game in which I want to create a level screen map. The Map doesn’t have to do anything with the game logic and stuff but I just want to add it to include a bit of richness. ...
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86 views

Show 3D elements on 2D background

I'll make a navigation menu in my game and had the good idee to this the enemies to start games or go to the gun store. The problem is when I look in game mode, the enemy named ZomBear in hierarchy ...
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1answer
157 views

Configurable Joint, linear limit range

I am working on a physics driven pressable button, but I cannot seem to tackle the minimum and maximum limits. This is the rig I have set up for the button (as it looks when pressed down). 2D view: ...
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46 views

Generate objects on playground on random location

How can I generate an object on my play ground? Note that there are some locations where the new generated item can't be placed. (Click on image to see the real size) I was following a tutorial on ...
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603 views

Making holes in 3D objects (Unity)

How can I make a hole in an object with Unity 3D? I've something like this object and I want to make a hole in it.
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75 views

What is the most efficient method of creating a detailed 3d tileset in a 3d game that uses a grid? [closed]

Well, the most efficient method might be with how minecraft does the terrain by using a single block for a single grid, but one thing I am concerned about is that the method minecraft uses is poorly ...
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0answers
46 views

Conversion from .dae to XML for 3D Models in Unity BuildR

My partner and I are trying to import .dae files from Sketchup as well as 3DS Max into Unity's BuildR extension. Collada a.k.a. .dae files have an XML-based schema so we incorrectly assumed they would ...
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1answer
23 views

XNA 2 3D Objects Depth Convergence Error

Gah! I have a scene with 2 3D objects - a plane and a sphere; the plane sits on the xy axis with a depth if -100 and diameter of 200; the sphere diameter is 32 and sits on the xyz = 0 position; ...
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2answers
113 views

Object orbiting a 3d sphere

I'm developing in libgdx java/android but not using any high-level environment like Unity. I have a sphere at [0,0,0], with a PerspectiveCamera looking at it. Through the main game loop I have ...
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0answers
17 views

Is it possible to Change the vertex format of a Model from line list to Triangle strip using DirectX

So I have a DirectX game library and using DirectX models in a game I am developing. All the models I am using have a Triangle Strip topology and thats fine as ID3DXMesh uses triangle strips for ...
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124 views

Dual Contouring - what is it and how to use it?

I'm having trouble understanding Dual Contouring yet and I need some explanations from someone who has first hand experience. I searched all I could before writing this question. I've already read: ...
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1answer
181 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 ...
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1answer
136 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 ...
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1answer
65 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 ...
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72 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 ...
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1answer
77 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 ...
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1answer
50 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 ...
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1answer
88 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 ...
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2answers
115 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. ...
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2answers
160 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 ...
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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 ...
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1answer
55 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. ...
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1answer
61 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 ...
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1answer
73 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 ...
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141 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 ...
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1answer
81 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 ...
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1answer
79 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 ...
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1answer
249 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 ...
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1answer
76 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 ...
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34 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 ...
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1answer
92 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 ...
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1answer
144 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 ...
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1answer
50 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 ...
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0answers
58 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 ...
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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 ...
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1answer
127 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? ...
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2answers
55 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 ...
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49 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, ...
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0answers
54 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 ...
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2answers
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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 ...
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91 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 ...
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132 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 ...