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

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1answer
148 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
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1answer
288 views

problem with SCNTransaction in Scene Kit

I'm trying to move an object over a period of ten seconds from y coordinate 0 to y coordinate 10. the object is created at y coordinate 0. The problem is when the animation starts, the object pops ...
1
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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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0answers
34 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. ...
2
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1answer
106 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 ...
8
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2answers
4k views

How do I calculate collision response between a sphere and a plane?

I'm trying to create a simple 3D game and need to constrain the player within the limits of the game world. When the player hits the sides of the world I want the player's ship to bounce off slightly. ...
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3answers
104 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 ...
6
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1answer
7k views

OpenGL ES 2.0: Understanding Perspective Projection Matrix

Setting the Perspective projection matrix in Open GL (including OpenGL ES 2.0) has the following general format: glm::mat4 perspective(float fovy, float aspect, float zNear, float zFar); Notice the ...
2
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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 ...
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1answer
199 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: ...
0
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1answer
79 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 ...
0
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1answer
48 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 ...
1
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1answer
56 views

add random walls with an array in 3D xna 4

I'm trying to add walls to my 3D game. I created a wall entity and added model array public Walls() { modelArray = new Model[10]; } public void Initialize(ContentManager contentManager) { for ...
4
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1answer
560 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 ...
0
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2answers
154 views

Supersampling - Pixel color average calculation

I am currently trying to understand Supersampling. Wikipedia says (or at least Wikipedia tells me) that multiple color samples are taken from one pixel to calculate the final result. But to my mind ...
11
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3answers
2k views

Prevent players from wallhacking in an online FPS?

Why do we still complain about wallhackers in multiplayer first-person shooters? Isn't it possible to perform occlusion culling for all players server-side? For example, send player xyz information ...
0
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0answers
53 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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2answers
121 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 ...
0
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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; ...
-1
votes
1answer
114 views

How can I render 3D frames quickly using VB?

I want to make a simple 3D engine using vb. It must be fast at creating frames obviously for a 3d game. So this code i have draws a frame at 4 fps Dim SM = DateTime.Now.Millisecond Dim ETDFrame ...
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0answers
140 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: ...
0
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1answer
137 views

OpenGL One Color Per VBO

Recently I have been working with OpenGL and have decided to use colors instead of textures. However, since the project I am working on is going to have a low-poly look, I want each color to stand ...
44
votes
12answers
4k views

How can people recognize what engine a game uses?

About many games you can say "oh that's the Unreal Engine for sure", or "this was made by upgrading GTA 4", etc. We can often recognize the engine used for a game just by looking at its graphics ...
0
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1answer
138 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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0answers
75 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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3answers
413 views

What name (if any) applies to this particular 3D rendering technique?

Is there a name for this technique where when instead of rendering certain polygons, you just calculate a few key points and do the drawings in 2d? For instance, instead of rendering a sphere, you ...
0
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1answer
83 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
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1answer
53 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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2answers
123 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. ...
1
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0answers
21 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 ...
1
vote
1answer
75 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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1answer
60 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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0answers
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 ...
0
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1answer
87 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
86 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 ...
-2
votes
1answer
105 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 ...
4
votes
1answer
270 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 ...
1
vote
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 ...
2
votes
1answer
147 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 ...
50
votes
9answers
76k views

Easy to use cross-platform 3D engines for C++ game development? [closed]

I want to try my hand at writing a 3D game. However I don't want to start at such a low level of drawing individual triangles and writing my own 3D object loader and so on. I've heard of things like ...
1
vote
1answer
52 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
63 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 ...
0
votes
1answer
1k 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 ...
3
votes
1answer
92 views

How to calculate height of a thought line over a known spot in 3rd person view?

Assuming a player object with third-person-view is in a 3d room and the center of the screen has a dot - let's call it "cursorTarget". All I have is the position of the player, the position 5 meters ...
1
vote
1answer
155 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? ...
2
votes
2answers
1k views

Create a continuous flight path on a Bezier Curve in Unity3d

I am working on a game in which a butterfly is flying along some path. What I am trying to do currently is create a Bezier curve starting from the butterfly's position(previous curves end point) and ...
33
votes
5answers
22k views

How can I draw outlines around 3D models?

How can I draw outlines around 3D models? I'm referring to something like the effects in a recent Pokemon game, which appear to have a single-pixel outline around them:
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2answers
56 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 ...