Refers to games or art assets built in a three-dimensional space, where all positions have X, Y and Z coordinates.

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3
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142 views

Converting obj data to CSS3D

I found a ton of formulae and what not, but 3D isn't my forte so I'm at a loss of what specifically to use. My goal is to convert the data in an 3D .obj file (vertices, normals, faces) to CSS3D ...
2
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0answers
55 views

OpenGL light appears to move with camera and changes with object rotation

I have a working open gl es 2.0 3d engine (my own) that I've used in several iOS apps. I recently noticed that on a mutli-symmetrical object the lighting didn't look the same at each rotation. For ...
2
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0answers
106 views

UDK Modular construction (customisable vehicles etc)

I'd like to build an interface whereby the user can attach various components and blocks onto a vehicle, this is then saved (as object/coordinate, rotation, scale values - in database) and can be used ...
2
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0answers
409 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 ...
2
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0answers
359 views

How can I export a model using the CAT bone system into XNA?

Has anyone successfully used the CAT bone system in 3ds Max and exported the file into XNA? If so, what was your method of doing so? There are a number of methods of doing this, apparently, but the ...
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0answers
133 views

How do I detect collisions between a particle-based net and a ball?

I've implemented a net using Verlet integration and many points connected with constrains; like this demo, but in 3D. I want to implement collision detection between this net and a ball (like in a ...
1
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0answers
59 views

XNA HLSL UV Mapping

I was testing my hlsl lighting shader, I've copied it from a tutorial and it works perfectly, but all the meshes in the model needs to have texture coordinate, I guess this is because this part: ...
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0answers
70 views

How would I warp a mesh with code?

I recently asked a question about putting a camera at the head of a 3D human model here and it worked out rather well and whatnot, but there is still a problem that bothers me: How would I ...
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50 views

LibGDX mesh silhouettes

How could I find out the silhouette edges of a mesh in libgdx? More specifically, how could I produce shadow volume geometry using the Mesh class of libgdx?
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157 views

How do I make a shaped fluidSurfaceActor in UDK?

I'm trying to make a fountain for my level in UDK. I've made the base of a fountain by using a Cylinder build and now I'm trying to put water in it. I want to use the fluidSurfaceActor but I notice ...
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0answers
104 views

Rotate view matrix based on touch coordinates

I'm working on an Android game where I need to rotate the camera around the origin based on the user dragging their finger. My view matrix has initial position of sitting on the negative z and facing ...
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0answers
135 views

How do I remove control points from imported curve in Maya?

When I create a path from an Illustrator file, it adds extra control points for bezier handles for each point in the AI file, even though I don't drag out the handles in Illustrator. All my points in ...
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55 views

Blender: calculation of elevation and rotation angle from plane

I have a generic plane (any location, any rotation around every axis) with its normal axis passing by the center. Then I have a generic point and I need to find the elevation and the rotation angle ...
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0answers
216 views

How can I implement collision for a “pseudo-3D” game?

I'm looking for high level implementation details, not specifics. I've worked with bounding boxes before in some 2D games, but I'm currently tackling a "2D + depth" (2.5D?) style game along the lines ...
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0answers
207 views

Moving an object (pong paddle) along the x,y axis in 3d-space with mouse/touch

First of all: Sorry, my English isn't quiet good, I'm very new in 3D and I'am using JMonkeyEngine. What I would like to do?: A 3d pong game and I want to control the paddle with the mousecursor ...
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83 views

iSGL3D Occlusion Culling

I was testing a cool 3D Scene Graph Library called iSGL3D. Since I found some functions called alpha culling for displaying partly hidden objects (making the ones in front transparent). I was ...
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0answers
183 views

How to create 3d picking ray with the cursor position

I'm new here and I'm not sure how to go about doing this. I am creating an application that is supposed to use the cursor's position in the window to perform 3d picking. The tutorials I have found ...
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0answers
437 views

How to pick a 3D object with known mouse coordinates if the camera is rotated 60 degrees?

I am making a simple game engine for a simple RTS game and would like to be able to pick a cube and move it around with the mouse coordinates. The problem is that my camera is rotated 60 degrees just ...
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575 views

What is the best way to implement collision detection using Bullet physics engine and a track generated from a curve?

I am developing a small racing gam, the track is generated from a curve. As said above, the track is generated, but not infinite. The track of one level could fit with no problem in memory and will ...
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0answers
48 views

How i can sign and/or group a specific set of vertices in a 3D file container like OBJ ? - in Blender

I would like to export a 3D model with each part having a name or a label if you will. For example i would like to export a model of an human body and name each part in specifics vertex groups like: ...
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194 views

BSPs, Octrees and modern graphics hardware

I have read a lot of literature on BSPs, Octrees and like. Problem is that it is all old literature from software rendering time. Nobody describes how it is implemented today. So here is my idea how ...
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0answers
760 views

How to turn a 3d camera (in HTML5 2D Canvas)

A few years back I started experimenting with 3d in canvas. Everything went pretty well untill I had to to turn the camera, I couldn't get it done. A few days back I just happened to stumble upon ...
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428 views

3d collision detection on non flat surface

i am developing a game which needs an accurate collision detection algorithm, when a object travels down a slope which isn't flat. To be more precise i need to simulate a skier who travels down a ...
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0answers
65 views

Picture got distorted after has been moved to Directx11

I have moved app from Directx9 into Directx11. After this upgrade strange thing happened with my world. Objects get skewed and became 2D, also they are clipped in unexpected places. Two arrows at ...
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50 views

Depth Map not rendering properly in DirectX / HLSL / SharpDX

I've been struggling with this for awhile, and everything I find online says this SHOULD be working, but I apparently missed something. I'm attempting to run Deferred Rendering in SharpDX on a ...
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0answers
87 views

X, Y, Z rotation around camera

I'm making a 3d orthogonal-projected, game using painters' algorithm in java. I'm able to rotate the objects with incremental rotations (e.g. rotate all objects 10 degrees) using affine ...
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40 views

Multiple Body Code?

I've been working on one game, 3D RPG with Ogre graphic engine and I wondered if there is a code for multiple bodies? Currently there is only one body model and if I want to add a new one, the ...
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0answers
24 views

Wall Collision on a model

I am building a model of a house in XNA and made a collision system so that when the player goes into the wall they stop. Also I made it so if the player is pressing the key 'up' and collides into the ...
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0answers
33 views

Maya shatter collision without interpenetration

I'm a newbie in Maya and after days of Googling I still cannot find the answer to my question. I'm making a solid shatter in Maya, as expected, the rigidbodies interpenetrate with each other. And the ...
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0answers
143 views

How do I structure my models for 3D animation?

I have a question about implementing a 3D animation system in my engine. The following is how I am attempting to model the render / animation systems. (Note: I am using Haskell for the pseudo-code ...
0
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0answers
50 views

JMonkey scrolling 3D text

I need to make a scrolling 3D text, which is not a gui. I have a 3d box display over which I should render a long scrolling text. I can render and move text, but how do I cut/make invisible the part ...
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61 views

How can I find the collision response between a moving sphere and cube?

I'm implementing my own algorithm for sphere and cube collision response. So far I'm able to only test if both of them overlap. My problem is: A cube is rotating around its axes i.e x and z axes. And ...
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87 views

Closest distance from 3D point to vector line

First let's have a look at my little drawing: I have an origin point p1 defined by x, y and z co-ordinates, and a vector v given by x, y and z magnitude. I also have an arbitrary point, p2, given ...
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54 views

XNA 4.0 displaying .fbx texture problem

Here is my image. I have Steve from MineCraft I exported it to .FBX format. After Googling for a while, I changed sampling mode to PointClamp and turned off anti-aliasing, but somehow the texture ...
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0answers
35 views

Separate shape in to a new object in Wings3D

I am working on a 3d model and I am having the following question: If you have one solid object and you have a specific part that you want to separate into a new object so you can move it and Unity3D ...
0
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0answers
232 views

Adding 2d hud/gui to a 3d game engine which has no 2d features

I have been following the 3d game engine tutorial series made by theBennyBox for a few months now, and have finally decided to create a game with it. My problem is that it is a 3d only engine which ...
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71 views

Cube projection composed of smaller cubes not lining up

I am trying to make a cube projection composed of other cubes, similar to a Rubik's cube but completely static. I can get one cube to work, but when I join multiple, they don't line up. I am using ...
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0answers
120 views

How to rotate a line in 3d space?

I am trying to figure out direction vectors of the arrowheads of an arrow. Basically I'm given a normalized direction vector (u,v,w) and I need the normalized direction vectors of the its two arrow ...
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0answers
76 views

3D model editor manipulators

I'm trying to make my own 3D model editor to better learn 3D programming. I have my translate manipulators and I'm trying to calculate the Vector2 that the mouse would have to move in order to move an ...
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154 views

Calculate parameters for orthographic matrix for directional shadow mapping

I am struggling with how I can fit my scene in an orthographic projection, based on what is visible by the camera. All tutorials so far explain almost everything in perfect detail, and then for the ...
0
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0answers
137 views

Shadow Mapping: How to calculate Axis Aligned Bounding Box?

I am trying to implement Shadow Mapping, which is actually working with an AABB that always covers my entire scene, but (obviously) it gives very blocky graphics. So I figured I need to calculate a ...
0
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0answers
41 views

How do I apply a specular/reflective map in Rhinoceros?

I'm designing a 3D model using Rhinoceros 5, and after having created the UVMap with UVLayout, I've imported the .obj file back into Rhinoceros to apply materials to it. I've successfully added ...
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0answers
79 views

Rendering a model with transparent or translucent uv map applied doesn't work

Before I try to make anything transparent, the model renders nicely. When I change the uv layout so that one piece of the model will be transparent, it renders horribly. This is the result with a ...
0
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0answers
173 views

Block picking / ray casting through 3d blocks always slightly off

I've been working on adding a line-of-sight/ray-tracing system to my 3d block-world game. I've tried several different methods and they all work fairly well. At the moment I'm using something similar ...
0
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0answers
53 views

3D Box Collision Data Import

I'm trying to implement a collision system using oriented bounding boxes, using a center for the box, it's extents as a 3D Vector and a rotation matrix, which is all stuff I picked up online and seem ...
0
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0answers
265 views

JavaScript 3D space ship rotation

I am working with a fairly low-level JavaScript 3D API (not Three.js) which uses euler angles for rotation. In most cases, euler angles work quite well for doing things like aligning buildings, ...
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0answers
85 views

Triangle Clipping

I want to determine which part of a triangle is visible in a frustum in OpenGL, is there a way to get visible coordinates of triangle in the viewing frustum?
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0answers
103 views

Generate complex (non-convex) polyhedron UV mapping

I need to find an approach to the problem of generating texture maps for non-convex polyhedrons without using a design tool like Maya. Specifically, I am mapping simulation results data onto a 3D ...
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0answers
69 views

Collision detection - relative distance

Assume an object move toward a polygon board in 3D field . In order to detect whether the object collide in the board , according to the lecture notes of my Computer Graphics Course lecturer - it ...
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0answers
149 views

Handling 3D perspective for different aspect ratio

I have problem for supporting different aspect ratio in developing Mobile Game. I was developing on 2:3 screen which is iPhone 4 (Retina). When I use width and height for screen size and use fixed ...