3D refers to three dimensional space where coordinates are represented with X, Y and Z values.
0
votes
1answer
40 views
Why does invoking glm::refract function return NaN?
At the present time, I make a simple raytracing project and I encounter an issue : When I invoking the glm::refract function, it returns me a vec3 with "NaN" values. However, my input data seems to be ...
1
vote
1answer
28 views
Unity sidescroller with 3D objects/environment. Should I create a 2D or 3D project?
I'm looking to make a side-scroller in which the camera and all objects can only move in the x and y directions. However, I'm going to have all objects and environments as actual 3D models.
Is it ...
0
votes
2answers
27 views
Object has its heading stored as Euler angles. After it makes a turn, how do I calculate the new angles?
Assume said object is an aircraft. I store three angles (in degrees) that describe where it's headed: yaw, pitch and roll - in that order. Let's say the plane is flying vertically, upwards. The angles ...
0
votes
0answers
28 views
Filling polygons with texture/color using SDL2
I recently went on to making a 3D software renderer using SDL2 and Rust as a learning project. It has been going quite well, it can draw lines, polygons, and cubes.
Now, it can only display ...
0
votes
0answers
16 views
Move/Rotate 3d multiple objects w.r.t. to one another in libgdx
I have two blender objects in .g3dj format. Below is the code :
private void createBaseArm1(){
// Now load the model by name from asset folder
baseArm1 = ...
0
votes
0answers
34 views
Unprojecting a 2D triangle
I am looking to describe triangle in world space, given that the following are known:
Two of its vertices in screen space (or rays in the world)
One of its vertices in world space (the right angle ...
-1
votes
0answers
21 views
Using ray casting to access a function associated with an opengl mesh [duplicate]
I am doing a 3d scene in C++ using OpenGL for my project in graphics programming. I want to be able to point the camera at things and use them such as drawers light switches and chairs etc. I am ...
0
votes
2answers
45 views
Hide building roof & Hide faces/vertices depending on world location
I'm currently developing a small game for my own enjoyment and I've ran into a problem. As you probably know many third person games (such as Runescape and XCOM, for example) hide the roofs when you ...
0
votes
2answers
62 views
Efficiently calculating best nearest sphere from a point in 3D space
I have a point in 3D space and a number of spheres (anywhere from 0 to thousands) at random locations in said space.
Each sphere has a property that falls off in a smooth gradient from the centre to ...
0
votes
1answer
67 views
Unity 5.3 C#: How to disable multiple game objects with one collision?
I'm making a top down perspective game with a gunner automatically moves on a pre-set path, and you shoot and destroy targets to remove barriers. The idea is that you control the bullet's direction ...
-2
votes
0answers
40 views
2D collision in a 3D environment using nav mesh
I'm relatively new to Unity and I'm making a top-down style Zelda game. The problem is: I can't create a navmesh in a 2D environment, so I've created a 3D game object for my background sprite to sit ...
0
votes
0answers
28 views
How to find visible planes in a world of boxes
I have a world where each object is a box:
Each box has position x, y=0, z, dimensions width, height, depth. The boxes are never rotated. Each box is composed of 5 planes (left, right, front, back ...
0
votes
1answer
42 views
directX rotation of a 3d cube inconsistent
i'm trying to develope a simple 3d cube in directX that can be rotated in any direction by dragging the mouse.
It works in the following way: i drag the mouse to the right or left, and the cube ...
0
votes
2answers
43 views
Roofs not appearing in Unity
My buildings are fine until I import them to Unity. None of the formats I've come across( FBX, DAE, 3DS Max, Blender Files, any of the Autocad formats, OBJ, PRJ, WRL etc.), have roofs when importing ...
1
vote
1answer
64 views
How can I render a texture to a polygon in SDL2? A fake 3D problem
I am working on a fake 3D game recently. The game is based on the perspective principle and using angular perspective. Here is a screen shot:
But the problem is that the walls and floor displayed ...
0
votes
2answers
66 views
How are animations specified by an artist but implicitly understood by the game engine?
I'm trying to understand the relationships between 3D models (files) and the games that load and use them. As a software engineer, I'm willing to make the few following assumptions:
I would assume ...
0
votes
2answers
71 views
How To Make My First Person Controller turn left and right in unity 5
I want my first person controller to turn left and right instead of just moving straight on that axis.
i have a 3d environment setup in "unity 5" and i am working with the "first person controller" ...
0
votes
0answers
14 views
How to decide the divisor for an HRTF algorithm FIR Filter output?
I am currently working on a program which plays 3-D sound in a virtual world using HRTF algorithm. For the sake of quality and freedom, I don't want to use OpenAL or DirectSound3D. What I have done is ...
0
votes
0answers
20 views
How to split or divide a polygon face in 3DS Max
I have previously used the Cut and Slice tools in 3DS Max. Recently I wanted to divide a selection of polygon faces into a specific number of faces. For example split each face into 2 equal halves, or ...
7
votes
2answers
207 views
Procedural rock algorithm
I'm looking to create some procedural low poly rocks and boulders for a game.
I haven't found much interesting information on the internet other than 3D software articles. Not sure what way to go.
1
vote
0answers
115 views
Recognize pattern in 3D building environment
I'm currently developing 3rd person building game (as bacheleor thesis). I need to recognize constructed patterns co I can mark corresponding structure as some building (so player can start using that ...
1
vote
1answer
74 views
How to fix my camera collision, C# XNA
I am having some weird issues with my camera. I am trying to make it so it is a first person camera, that when the user presses the W or Up key, it moves towards where the camera is looking. My issue ...
0
votes
1answer
90 views
How could we use trigonometry for moving around a 3D World?
Well I have a question about geometry and 3-Dimensional player movement in general. I'm using Java, OpenGL and LWJGL.
This is basically what I got:
currentFrontSpeed: Is a float that contains the ...
0
votes
0answers
66 views
3D Noise for Terrain in Chunks
I'm trying to create a voxel engine that uses marching cubes to create smoothed terrain. I have most of it implemented, but:
I'm struggling with how I should create a noise function in ...
0
votes
2answers
102 views
Best way to draw 2D shapes on a 3D flat object
I want to draw shapes (arcs, circles, lines) on a table, which is in 3D space. The table top is at Y=0 level and oriented so it points to (0, 1, 0). There are some other 3D objects on the table, so ...
1
vote
1answer
35 views
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. ...
2
votes
1answer
54 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 ...
0
votes
1answer
26 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 ...
0
votes
1answer
68 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 ...
1
vote
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 ...
7
votes
0answers
114 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 ...
1
vote
1answer
51 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 ...
1
vote
1answer
39 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 ...
0
votes
0answers
23 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.
...
0
votes
3answers
65 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 ...
1
vote
1answer
103 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
votes
1answer
40 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 ...
6
votes
2answers
498 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.
0
votes
1answer
63 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
votes
0answers
29 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 ...
0
votes
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
vote
2answers
91 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 ...
0
votes
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 ...
1
vote
0answers
100 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:
...
6
votes
1answer
156 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
133 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
60 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
57 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
66 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
41 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 ...
