3D refers to three dimensional space where coordinates are represented with X, Y and Z values.
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12 views
Problems when rotating object to animate in Unity
I am trying to create some animations for a car model in Unity and I have a problem with the rotation of the wheels
https://imgur.com/a/HcWxyob
Here I can set the rotation properly as the pivot ...
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0answers
15 views
UE4 how to make smooth transisions for surfaces
Looked for hours now. I'm looking for a way to make a smooth transisions for different surfaces. Like I want to make a minigolf course with things like downslopes but I don't want a hard edge for the ...
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1answer
36 views
3D affine transformation (rotation) mimicking Mode 7, Java 2D
I watched videos of games using mode 7 like Outrun or Space Harrier and I want to make a game which imitates this classic graphic.
I was inspired by Notch's Prelude Of The Chambered too.
After ...
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vote
1answer
120 views
How do 3d game engines draw this pattern?
I am doing a small project, where there is a 3d engine, however I do not know how to draw something if it is like the image below. Usually I would draw from farthest back to closest. But here there is ...
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1answer
39 views
Logic at a low framerate with interpolated rendering at higher framerate
It takes too much processing power to do game logic on every rendered frame (60fps), so what if I made my game save frames?
It would actually calculate important stuff 20 times a second, and the ...
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2answers
39 views
Adding force to a 3d object in a 2d scene
I have a 3d game object placed in a 2d scene (top-down view) in Unity. I want to add force to the object to move it in the direction it's facing. I attached a RigidBody2D component to it and when I ...
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0answers
37 views
Are there any premade outdoor worlds suitable for testing 3D graphics? [on hold]
For the purposes of visual experimentation and engine development, I'm looking for a premade test world that models a complete outdoor environment – both terrain and objects.
I'm aware of models like ...
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0answers
39 views
How would one create an effect combining a ground plane in perspective with 2D characters/buildings?
I'm trying to figure out how this effect was made. The ground plane and fences seem to move and distort in perspective projection, but the characters, houses, and trees look like billboarded sprites.
...
6
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1answer
11k views
How can I make 3D games in 4K that are a few megabytes?
I would like to make 3D games in 4K that are a few Megabytes (MB) in download size.
Is there a way to use 3D Vector Graphics in games to reduce the file size ?
Or is there any other way to achieve ...
1
vote
1answer
82 views
3D Perspective issues
My team is currently developing a 3D Sidescroller game and we encountered some issues regarding the whole in-game perspective of the levels.
The levels are composed of 3D modeled corridors which are ...
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votes
1answer
24 views
First Person Shooter Character in Unity - Meshes Clipping When Close to Body?
I am working on a game character using Unity. I'd like it to be playable in 3rd Person and 1st Person depending on what the user chooses (switchable in game whenever ideally).
I've worked on and read ...
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1answer
12 views
How do I determine distance of a point within a ProBuilder mesh?
As in the title, I have an effect prepped for my game which applies certain derived parameters to a post-processing effect after the player enters a boundary I created with ProBuilder. Finding how far ...
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0answers
30 views
Unity3D Sprite not rendering correctly when it's too small? (Appearing like a blob)
This issue has been tripping me up for quite a while now. I'm using a sprite to mask out a portion of the main camera's output using DepthMask in a 3D scene (http://wiki.unity3d.com/index.php?title=...
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vote
2answers
35 views
Draw text in OpenGL ES 3D game?
I am making a game using OpenGL ES 1.0 and I want to keep player score. So I need to draw text dinamically. What is the best approach? Some library, textures, bitmaps?
I tried to use TextView but ...
1
vote
0answers
25 views
Does it make sense for a view matrix to have a scale?
When building a view matrix from an SRT matrix multiply, examples (here and here) only ever compose it with a R and T. Does it make sense to have the S component be anything other than the identity? ...
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0answers
22 views
Unity3D Hinge Joint Ropes Unstable
I need to create several ropes to go on the head of a mop, which can be picked up and moved around as a physics object by the player. I've tried composing each thread out of several capsules connected ...
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0answers
19 views
Efficiently drawing a batch of meshes?
I was playing around with some isometric ideas, I want to create fairly large maps with a couple of Z levels, much like the older X-com games. I figured I am probably way better off to draw the quads ...
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0answers
47 views
THREE.js - moving a 3D ball with a rotation
I'm new to THREE.js and with a very poor knowledge in physics - but I am trying to build a football game engine (viewed from top) and right now I'm struggling with the movement of the ball.
when ...
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0answers
30 views
creating random 3d voxel object with higher density at center
I am building a game similar to SuperHyperCube but far more arcadey and I wanted to have my main object grow without becoming to "long"/"stringy".
https://i.kinja-img.com/gawker-media/image/upload/...
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0answers
15 views
How to make 10 Frame bowling scoreboard?
How can i store 2 spins total of each frame. And storing the totals of 10 frames?
Foreg. in 1st frame = 10 (spin1 = 9
spin2 = 1)
2nd frame = 10 (spin1 = 10
...
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votes
0answers
22 views
Adding large 3d models into Unity
I have a 3d model of a restraunt with several characters in it probably over a hundred objects. Whenever I try to import it into Unity Unity just loads forever until I force close it. How do you ...
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1answer
78 views
In a game such as Star Wars Galaxies, Planetside, and Warcraft how would server-side collision/terrain navigation work?
I'm trying to learn some advanced topics in multiplayer networking for fun and education, specifically how server-side collision/terrain navigation works in MMOs and/or any online game.
Personally, I ...
2
votes
0answers
30 views
How do you find the collision between 3D boxes and 3D QUAD face meshes?
I have an axis aligned bounding boxes for 3D object collision, but I have a complex 3d mesh that's divided into 3d faces so I want to check for bounding boxes and collision with the faces of that ...
-2
votes
1answer
29 views
2D and 3D Tablet Games Definition
I would like some clarifications how to distinguish between a 2D and 3D mobile game, as mobile devices do not really have 3D screens.
i) Do 3D iOS or android games really exist or are they 2D tablet/...
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0answers
18 views
Is there a way to edit the header info of an FBX file?
specifically, I would like to restore some version information from FBX files exported from Google's Tiltbrush, cleaned up a bit in Blender, and then imported into Unity. The Tiltbrush SDK for Unity ...
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votes
2answers
52 views
How Can I Fix Spawning The Tiles?
I am making a 3D infinite runner game in Unity in C#. When the player has reached the end of the tile it should spawn another tile and then delete the previous tile. When the player reached the end of ...
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votes
1answer
102 views
How to implement the seek steering behavior in Unity3d?
Following this tutorial: Understanding Steering Behaviors: Seek, I tried to add seek and steering behavior to my Unity prototype but it's not working this is my script. The cube does not steer it just ...
0
votes
1answer
50 views
Using 3D models in an 2D Game in libGDX
In my libGDX 2D RPG-Game (like Zelda or something) I want to display some items as 3D-Objects. Since I'm using an OrthographicCamera like this:
...
1
vote
1answer
47 views
Transforming a 2D Grid in 3D Space
Hi everyone,
I'm trying to implement a 2D Grid in a simple 3D Editor. Here are some debug-rays I already implemented:
Everything is working as intended as long as the object is not rotated.
For ...
0
votes
1answer
46 views
Using PyOpenGL, can I rotate raw data rather than the current matrix?
I'm trying to create a sort of PyOpenGL renderer for the Bullet physics engine, and at the moment I'm rotating my basic cubes with math in Python. However, if I do the math in Python that's going to ...
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votes
0answers
37 views
How to include car spinout in vehicle physics?
I would like to know how I can go about implementing car spinout in games. I heard that spinout is caused by loss of traction in the rear wheels of the car but I don't know how it relates to velocity ...
0
votes
1answer
42 views
libGDX 3D texture is stretched
I'm working on a 3D maze game using libGDX. I'm using MeshBuilder to render the walls. All walls are a single part made using a ModelBuilder in the create():
...
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0answers
77 views
Weird object's behavior
I have created a character. It is a zombie that I design.
I have this code for the zombie to follow my character controller:
...
0
votes
0answers
45 views
How do I find the texture origin using UV data?
I am writing a map decompiler for the video game Tron 2.0 and its map editor, DEdit. DEdit requires a set of three vectors in order to correctly map textures to each model. The vectors are what I ...
1
vote
0answers
51 views
How to implement weighted blended order independent transparency in OpenGL?
I want to implement weighted blended OIT in my C++ OpenGL 3D game, but I didn't find any C++ examples about weighted blended order independent transparency.
Paper
How to clear accumTexture(...
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votes
0answers
21 views
How to implement floating behavior on player character
Lets say I have a body of water with the level of the water at each frame, with waves that basicly go up and down. How would you implement the computation of the velocity to keep the object/npc/player ...
0
votes
0answers
20 views
How to find volume of convex 3D shape
I'm not sure what can be said that isn't in the title.
The gist of it, is that I have a convex mesh delimited by polygons (can have more than 3 sides), and I want to find it's volume. Is there an ...
21
votes
1answer
2k views
Why do transformation matrices always have an extra dimension? [duplicate]
In 3D math I always see matrices with one additional dimension. For example, in 3D graphics, matrices are always 4x4 and in 2d they are 3x3 matrices. Can anyone explain why?
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0answers
32 views
is that a pbr Shader?
im not sure about one thing: In my engine i have a shader wich takes:
Diffuse, Specular, Normal, Metallic, Roughtness, Refraction,Height, Detail and Emission maps. The lighting is calculated using ...
0
votes
1answer
48 views
Collision not smooth in unity3d
I am working on a project(Racing car).
When it hit an object the object should be destroyed. The Object is being destroyed when it is hit, but the car stops for a moment after hitting like an obstacle....
0
votes
0answers
39 views
If my game is free, do I still need licencing? [duplicate]
Studying 3D model development at the moment, and one of my ideas is to make a game in a near future.
I like cars, I like games, and if I could I would be pleased to make my own racing game. But that ...
0
votes
0answers
52 views
How can I raycast a floor in a simple raycasting engine?
I've been following the infamous lodev raycasting tutorial for a little while now but I can't make heads or tails of how the raycasting for the floor/ceiling works.
He seems to be drawing the floor ...
1
vote
1answer
33 views
Aim/Scope Oscillation Algorithm
I have been struggling to find an algorithm to implement something that will make a direction oscillate within a cone constraint, in a helix-shaped fashion as in photo (it will always go back to the ...
1
vote
1answer
85 views
I don't understand code that builds 3D sphere
I'm trying to learn some lwjgl and opengl, and I was trying to make a 3d sphere etc, I found a code to do that, but I don't 100% understand the code and the math behind it and would like to get some ...
1
vote
0answers
25 views
Switch Vector 3 x,y,z Components Based on Rotation
I have a cube that moves by rotating on its edge. I want my code to also work for cuboids. The following code is what I'm using to rotate my cube:
...
1
vote
0answers
102 views
Is there a way to convert a shader code to shader graph?
I would like to ask if there is a way to convert a Coded shader into the new Shader graph, beacause i want to edit my shaders in more efficient way.
Any help is appreciated.
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vote
0answers
30 views
How can I move the camera to create a parallax effect?
Right now I am making an application which can be described as model viewer for iPad Pro. The client wants to have an orbiting camera around the object and in addition he wants to have a parallax ...
2
votes
2answers
271 views
How can I generate the smallest enclosing sphere from a mesh?
I have a polygon which is defined by a set of vertices and I need the smallest sphere encompassing the mesh.
The spheres are defined by a position vector (x,y,z) and a radius.
Is there an algorithm ...
1
vote
1answer
189 views
libGDX 3D rendering
I'm currently working on a FPS 3D game using libGDX. I aim to have maze-like levels (like the original Doom and Duke Nukem 3D) so I'm making a level editor with a top-down view and lets you stretch ...
0
votes
1answer
126 views
Getting the winding order of a mesh
I'm doing some topological operations on my mesh and I need to know the winding order for my mesh.
Since I will be importing models from different sources I will need to know whether the winding ...
