Geometric representations of objects in 3 dimensions. 3D-meshes are made up of a collection of triangles or other polygons, forming volumes and surfaces. They are commonly used for visual representations on computer screens.
3
votes
1answer
85 views
Why do some .obj files have no newlines?
I'm working on a game engine and just started with mesh loading. I started with the format .obj. I ran into this problem:
The guide I'm following gave me a couple of .obj files to try and they all ...
5
votes
1answer
99 views
How can I render an .stl file in XNA or Monogame?
How should I go about rendering a .stl file as a 3d model in XNA? The .stl file contains a bunch of triangles that add up to a solid mesh. I have already figured out how to read the contained data. ...
0
votes
1answer
65 views
How to know if a model is composed of a group of models?
I've downloaded a model, and try to ungroup the model and learn how this model was made. However, the big model in the image below can not be ungrouped anymore.
I feel that this model is composed of ...
1
vote
0answers
64 views
3D Model Loading in DirectX 11
At the moment I am trying to implement fbx model loading in my DirectX 11 code. This is old code I had create for use with DirectX 9 and I'm simply trying to bring it back up to date.
Since I first ...
-2
votes
1answer
75 views
Programmatically creating a 3d mesh in XNA
Surprise! Another question related to Minecraft. Anyways:
Rather than drawing thousands of blocks each frame, I remember reading somewhere that Minecraft breaks the map into 16x16x256 chunks, and ...
1
vote
2answers
129 views
How to correctly create bullet rigid from custom .mesh in Ogre?
Being new to 3d programming and bullet physics in particular, I am wondering how a 3d model or the mesh generated out of it effects the accuracy of bullet physics simulation.
I have written a ...
-1
votes
1answer
65 views
Looking for pre-broken models/meshes for use in a unity project [closed]
Hi guys for my final year project I'm working on comparing the difference between a few destruction techniques for a game environment, based on looks and computational efficiency. I intend on ...
0
votes
2answers
73 views
Irrlicht rendering basic OBJ
I have been trying to render a "room" with some basic functions and I found some "bugs".
So at first I have made a "room" out of 6 planes in blender and gave each of them a diffrent color.
...
1
vote
1answer
125 views
How would one render dynamic vertices in OpenGL ES 2.0 like in a 3D modeling program?
Is there an easy way to re-render dynamic vertices in OpenGL ES 2.0 so that one could, for example, make a modeling program?
I understand how to make a dynamic vertex array, but what I don't ...
5
votes
0answers
118 views
UDK or Unity Dynamic Runtime Mesh Boolean subtraction (or alternative)
I'm new to 3D game dev and was wondering if anyone could help me out.
I'm planning to use UDK and would like to have deformable items in the world.
So a projectile strikes a target, and a dent or ...
3
votes
1answer
94 views
Stitching meshes together
I have a voxel engine that generates a mesh per chunk and now I want my meshes to be 1 mesh, but if I create them as a single mesh I kind of lose the benefit of chunking the data in the first place.
...
7
votes
0answers
169 views
Path Finding for an Arena based map in 3D using NavMesh
I have a 3D arena map (consider a small island surrounded by water on all sides) for a multiplayer Tank fight game.
The moveable areas are marked using a Navigation Mesh made by the Arena designer.
...
0
votes
1answer
48 views
Unable to manipulate Imported Object menu (Unity)
I've imported a model, but for some reason I can't edit any settings under the Imported Object menu, such as the Mesh Filter or the Mesh Renderer.
See this: http://i.stack.imgur.com/t7ZYR.png for a ...
3
votes
2answers
137 views
XNA 3d model mesh.draw() throws TextureCoordinate0 is missing error
I've downloaded a bunch of 3d models from turbosquid.com. The majority of the one's I've downloaded are simply .fbx files. When I load the model into my game and run it, the following error is thrown ...
4
votes
2answers
204 views
Displaying (3D) objects' name above them
The Elder Scrolls: Morrowind has a rather interesting way to display each focused objects' name. It's all a bit fuzzy in my memory right now, but the most important part I remember perfectly: the ...
0
votes
1answer
70 views
Interleaved formats for meshes confusion
So I have been reading up on data formatting for 3D objects so that I can render my meshes as fast as possible in openGL, I am quite new to openGL so bear with me.
The format for interleaving your ...
0
votes
0answers
57 views
Draw mesh on 2d image in cocos3d [closed]
Hi friends I want to draw mesh on 2d image as shown in this image, below I have given code, but application is crashing and no error message is displaying...so facing difficulty to identify the ...
2
votes
1answer
57 views
Swapping limbs between meshes
I'm trying to achieve what was done in the game impossible creatures. I will have a skeleton to which I will apply different meshes to i.e. torso mesh, leg mesh, etc. I would also like these meshes to ...
4
votes
1answer
94 views
Are models on 3D warehouse free of copyright? [closed]
Are models on sketchup's 3D warehouse free to use for personal or commercial work? I haven't been able to find copyright information on the site.
1
vote
0answers
54 views
Swap limbs of a skinned mesh
If I have a model, such as a robot, I am able to swap its limb meshes out and replace them with other robot limb meshes by merely removing the limb mesh from the skeleton and attaching the new one to ...
1
vote
2answers
92 views
Finding Surface of Inner Volume mesh
I am working on the generation of Hexahedral mesh generation using octree based discretization. I have a volume mesh (Hexahedral), using isomorphism I need to project the outermost surface vertices of ...
0
votes
1answer
110 views
Strange rendering in Direct3D 10 [closed]
I'm writing an application which renders graphics on the screen. The application can switch between Direct3D9 and Direct3D10 graphics modules (I wrote DLLs that wrap both D3D9 and D3D10). When trying ...
1
vote
1answer
192 views
Perlin Noise for game terrain; math error (unexpected breaks in terrain (3D grid))
So, I'm learning how to generate terrain using Perlin Noise, and I came across this code: http://stackoverflow.com/questions/4753055/perlin-noise-generation-for-terrain/4753123#4753123
PerlinNoise.h
...
2
votes
1answer
97 views
Finding holes in mesh
I have a mesh that has holes. I found a paper, An Automatic Hole-Filling Algorithm for Polygon Meshes
It details an algorithm that uses a k-d tree for finding holes (from a manifold triangle mesh). ...
3
votes
1answer
126 views
How to approach skinning a snake made of cubes and is it right method for snake 3d game
I'm making a 3d snake game clone for studies and prettly much got everything to work, I have a 3d ground object surrounded by walls, and a snake head piece (cube). when you start the game 2 additional ...
2
votes
2answers
347 views
Creating a custom binary format for 3D meshes
I've seen people saying it's better and faster to use a custom binary format for your 3D models, based on your needs, instead of using exchange formats. But, I'd like to know how to create a basic ...
0
votes
0answers
59 views
Create smoothing groups from hard edges in 3ds max plugin
I asked this question on Stackoverflow but no one answered it yet, so maybe here it has better chances :).
I need to implement an importer to 3ds Max that will load some custom mesh data. I have ...
1
vote
1answer
76 views
Blender 2.6: Move Mesh to X Coordinate of Another Mesh
An example:
There are two planes A and B with the following median points:
( X | Y | Z )
M_A ( 3 | 2 | 2 )
M_B ( 6 | 1 | 1 )
Now I want to move the plane A on the X-axis to the X coordinate ...
3
votes
3answers
554 views
DirectX 9 - model rendering from .obj files issues
Well I can clearly tell that what rendered is close to what I wanted, but there seems to be a few problems.
The .obj files contained values like "f", "v", "vt".
Image Of Problem: ...
1
vote
1answer
86 views
Progressively loading the racing arena in a 3D driving sim
I need advice and resources on a 3D car simulator.
I want to progressively load the track for the player as I'm thinking of porting the game to mobile devices.
This seems too difficult to me as I'm ...
-1
votes
1answer
197 views
Drawing polygons in 3D
I have recently been working on a 3D engine from scratch, using JavaScript and HTML5. I've successfully created lines (although slightly buggy) and points, but I can't figure out faces. My current ...
0
votes
1answer
161 views
Wavefront mesh: determine which face a point belongs to?
I have a 3D mesh Wavefront .obj file.
Is there any algorithm that takes an arbitrary point coordinates as input and determines which face of the mesh that point belongs to ??
The mesh is rendered on ...
2
votes
1answer
165 views
Software rendering 3d triangles in the proper order
I'm implementing a basic 3d rendering engine in software (for education purposes, please don't mention to use an API). When I project a triangle from 3d to 2d coordinates, I draw the triangle. ...
1
vote
1answer
232 views
XNA Per-Polygon Collision Check
I'm working on a project in XNA for WP7 with a low-poly environment, my problem is I need to setup a working per-polygon collision check between 2 or more 3d meshes.
I've checked tons of tutorials ...
2
votes
2answers
246 views
matrix to transform unit cube to space defined by 8 arbitrary points
I asked a question relating to similar to this already, but I think this is a clearer objective of what Im trying to achieve.. or whether its possible at all!
Im trying to find a transformation ...
2
votes
1answer
244 views
Rendering multiple squares fast?
so I'm doing my first steps with openGL development on android and I'm kinda stuck at some serious performance issues...
What I'm trying to do is render a whole grid of single colored squares on to ...
15
votes
1answer
393 views
Algorithm to simplify building/structural meshes
I am looking for an algorithm to simplify the meshes of buildings or similar structures.
EDIT: I had made a comment that Hoppe's algorithm tends to make meshes more and more spherical with ...
1
vote
3answers
157 views
The need to reduce mesh count
In Panda3d, I load a model and place 10000 references to it in the scene-graph. It runs at (say) 2Hz.
I load a 3d model containing 10000 copies of that exact same object, and it runs at (say) 60Hz. ...
6
votes
1answer
441 views
Animating a 3D model with XNA
How do I animate a biped model from 3ds max using XNA framework or not necessarily the biped model, it could be any 3D model but how can I code the animation?
1
vote
0answers
136 views
Vertex Normals, Loading Mesh Data
My test FBX mesh is a cube. From what I surmise, it seems that the cube is on the extreme end of this issue, but I believe that the same issue would be able to occur in any mesh:
Each vertex has 3 ...
6
votes
3answers
324 views
Why doesn't light continuous on my model?
I created a basic textured cube model with Blender to practice modeling, and then I imported it into Unity. After I put up some lighting it looks pretty ugly. The light is not continuous on a row of ...
1
vote
1answer
257 views
Models with more than one mesh in JMonkeyEngine
I’m a new jmonkey engine developer and I’m beginning to import models. I tried to import simple models and no problems appeared, but when I export some obj models having more than one mesh in the ...
4
votes
1answer
240 views
Game Asset Size Over Time
The size (in bytes) of games have been growing over time. There are probably many factors contributing to this: trailer/cut scene videos being bundled with the game, more and higher-quality audio, ...
1
vote
1answer
98 views
Triangle Strips of Tetraheron
I am confused about the triangle strip representation of closed mesh .The vertex buffer for triangle strip representation of the a figure is shown below:
A(0,1) B(0,0) C(1,1) D(1,0)E(2,1)
vertex ...
1
vote
2answers
743 views
Where to attach global scripts in Unity?
As far as Iknow in Unity, every script must be attached to an object. But what is the case with global scripts? For example in a tetris-like game to which object should I attach the element spawner ...
1
vote
2answers
270 views
Converting many faces to single mesh and reduce poly-count in Blender
I'm not so familiar with 3D modelling, and I'm stuck on a simple task in Blender.
I have a fairly complex model that's been imported as a .DAE file from SketchUp. This model is composed of many ...
3
votes
1answer
495 views
How to merge two objects in Blender
What I've Done
I created a Cube object with Subdivision Surface modifier in order
to model a spehere.
I created a cuboid object looking like a angled, longish baton.
What I Want to Do
I want to ...
3
votes
3answers
693 views
Textureing subdivided Icosahedron in XNA, seam problem
*Look below for the updated source code*
I have started to to make some different types of objects and create them by code in XNA. Right now I have finished the code for creating a Icosahedron. And ...
1
vote
1answer
278 views
Blender to 3ds max to cal3d format
There are quite a few questions on cal3d but they are old and don't apply anymore.
In Blender(must be 2.49a for python script to work!!!):
I have a scene with 7 meshes, 1 armature, 10 bones. I tried ...
0
votes
0answers
132 views
How to create rigged 3dModel in Blender and setRotation in irrlicht?
I have edited a rigged human model in blender (to change the axis of rotation of certain joints), to export it to Irrlicht and setRotation on the model's joints.
Irrlicht detects the joints in
...
