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.

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2answers
572 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
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1answer
445 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
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3answers
982 views

UDK or Unity Dynamic Runtime Mesh Boolean subtraction (or alternative) [closed]

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
219 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
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1answer
275 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
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1answer
180 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
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2answers
653 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
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2answers
812 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 ...
1
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1answer
255 views

Are interleaved vertex data formats better than non-interleaved formats?

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 ...
2
votes
1answer
70 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
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1answer
300 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.
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0answers
151 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 ...
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2answers
158 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
143 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 ...
2
votes
1answer
330 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
256 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
192 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
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2answers
1k 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 ...
1
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1answer
127 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
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3answers
1k 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: ...
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1answer
113 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 ...
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1answer
309 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 ...
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2answers
306 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
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1answer
236 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
540 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
464 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
505 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 ...
17
votes
1answer
800 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
181 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
1k 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?
2
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0answers
199 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
374 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 ...
2
votes
1answer
487 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
285 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
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1answer
180 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 ...
3
votes
2answers
3k 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
598 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 ...
5
votes
1answer
7k 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
932 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
404 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 ...
4
votes
1answer
206 views

What uses are there for multiple UV maps on a model?

I'm trying to think of some reasons why there might be more than one UV map on a mesh. Usually I just unwrap the model, and the same UV map works for both the diffuse color texture, the bump map ...
0
votes
2answers
961 views

Creating mesh at run-time

I've a set of voxel data and I want to create a mesh out of it at run-time. I've looked into MeshBuilder and MeshHelper but I haven't found anything useful or a good tutorial how to use them. Can ...
0
votes
1answer
141 views

Why are my triangles not being drawn in the color I define?

I render a simple mash structure with Tao (don't think this is relevant) using DisplayList. Following code appears between int displayList = Gl.glGenLists(1); Gl.glNewList(displayList, ...
3
votes
2answers
6k views

Blender: How to merge two faces?

Initial Situation Using Blender 2.6, I often come to the same problematic setting: There are two faces on one straight line. My Aim I want to keep just one of the two selected faces, which you ...
0
votes
4answers
435 views

Missing triangles in model

I am having an issue where triangles in a model aren't being shown. The left is wireframe, the right is the finished image. For some reason a bunch of the triangles aren't being shown. The project ...
0
votes
1answer
338 views

Blender 2.6: How to Merge the Pros of Meshes and Surfaces

there are two interesting kinds of objects: Meshes and Surfaces. Each of them offers very cool features. Object Type Specific Features Nice Features of Surfaces: (for example) They're as scalable ...
5
votes
1answer
1k views

Finding if a point is inside of a mesh (Point-in-polyhedron)

How can I find if a point (Vector3) is inside of a mesh? Would this work for both concave and convex objects? I read somewhere that if you raycast in both directions of every axis (X, -X, Y, -Y, Z, ...
18
votes
7answers
9k views

Algorithm for creating spheres?

Does anyone have an algorithm for creating a sphere proceduraly with la amount of latitude lines, lo amount of longitude lines, and a radius of r? I need it to work with Unity, so the vertex positions ...
2
votes
2answers
3k views

Drawing a dynamic indicator for a field of view

My goal is to draw a dynamic indicator for a cube, which represents the field of view. The ideal indicator would look the same as in Metal Gear Solid(the blue ones): From what I have gathered, I ...
4
votes
1answer
816 views

Strange mesh import problem with Assimp and OpenGL

Using the assimp library for importing 3D data into an OpenGL application. I get some strange problems regarding indexing of the vertices: If I use the following code for importing vertex indices: ...