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• signed angle between two 3d vectors with same origin within the same plane? recipe?

  - by Advanced Customer

  Was looking through the web for an answer but it seems like there is no clear recipe for it. What I need is a signed angle of rotation between two vectors Va and Vb lying within the same 3D plane and having the same origin knowing that: the plane contatining both vectors is an arbitrary and is not parallel to XY or any other of cardinal planes…

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• How to color a mesh with values at the vertices in WPF 3D?

  - by Christo

  We've got a sphere which we want to display in 3D and color given a fuction that depends on spherical coordinates. The sphere was triangulated using a regular grid in (theta, phi), but this produced a lot of small triangles near the poles. In an attempt to reduce the number triangles at the poles, we've changed out mesh generation to produce…

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• How to get a 3D picture in an iphone app?

  - by wolverine

  In an application, i saw that they used to display pictures of vehicles. But what was amazing was when we touch and swipe in that picture, it rotates in 3d way left and right. And from the front view we can rotate and get to see its back view also. It is a very good feature and i was trying to replicate it. But couldnt get an idea of how and…

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• Ubuntu 11.10 Virtual-box Unity 3D not working

  - by naveen

  After struggling for four hours, I still cannot get Unity 3D of Gnome 3 to work on my VirtualBox - I have been pouring through Internet and forum posts but to no avail. Here's what I've done so far: VirtualBox 4.1.4r74921 on Windows 7 Installed Ubuntu Desktop 11.10 ( 32 bit ) Enabled 3D acceleration Allocated 1.5GB of RAM Allocated 50MB…

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• XNA - Strange Texture Rendering Issue Using XNA BasicEffect

  - by Spencer Marr

  I have been reading and working through Riemers 3D XNA tutorials to expand my knowledge of XNA from 2D into 3D. Unfortunately I am having rendering issues that I am unable to solve and I need a point in the right direction. I am not expecting the Models to look identical to Blender but there is some serious discoloring from the texture…

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• Missing z-axis rotation for transforming between two vectors

  - by Steve Baughman

  I'm trying to rotate a cube so that it's facing up, but am getting hung up on the final implementation details. It now reliably will rotate the x,y axis to the correct side, but the z-axis is never rotating (See photos of before and after rotation). When I'm using the code below I always get '0' for my rotationVector.z. What am I missing…

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• Obtaining a world point from a screen point with an orthographic projection

  - by vargonian

  I assumed this was a straightforward problem but it has been plaguing me for days. I am creating a 2D game with an orthographic camera. I am using a 3D camera rather than just hacking it because I want to support rotating, panning, and zooming. Unfortunately the math overwhelms me when I'm trying to figure out how to determine if a…

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• Why are bugs responsible for big deficiencies in functionality given such low priority?

  - by keepitsimpleengineer

  Well, first of all, change is inevitable and mostly good. Furthermore attempts at simplifying the User Interface such as Gnome 3, Unity to make Linux more inclusive hold much promise, even though they adversely affect my style of working. Additionally, though now retired, I have worked with computers for 47 years, and though I do…

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• Translating an object along its heading

  - by Kuros

  I am working on a simulation that requires me to have several objects moving around in 3D space (text output of their current position on the grid and heading is fine, I do not need graphics), and I am having some trouble getting objects to move along their relative headings. I have a basic understanding of vectors and matrices.…

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• How do you dynamically allocate a contiguous 3D array in C?

  - by Derek

  In C, I want to loop through an array in this order for(int z = 0; z < NZ; z++) for(int x = 0; x < NX; x++) for(int y = 0; y < NY; y++) 3Darray[x][y][z] = 100; How do I create this array in such a way that 3Darray[0][1][0] comes right before 3Darray[0][2][0] in memory? I can get an…

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• Codeigniter PHP Framework - Need to get query string

  - by Siva

  Hi, I'm creating a e-commerce site using Codeigniter. My question is, how should i get the query string. Am using a saferpay payment gateway, the gateway response will be like this …

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• Dynamic memory allocation for 3D array

  - by javierkeung

  How can i allocate 3D arrays using malloc?

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• suggestions for a 3D graph rendering library?

  - by Sandro

  Hello coders! So I'm not sure how stackoverflow friendly this question is since it doesn't have a quick clear cut answer but here we go... I have a java program that generates…

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• 3d / 2.5d game library for iphone and pc

  - by Aaron Qian

  I'm trying to make a 2d shooter game with 3d background. The player and enemies are essentially just quads with textures. The background will be simple 3d polygons with…

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• [Flash 3d engine] Away3d and events (Basic questions)

  - by Simon

  I'd like to play around 3d in Flash and I'm wondering how sophisticated objects can i load from 3D Max... cos as i read it's possible to load something from 3d Max I've…

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• Automatic images translation to 3d model

  - by farrakhov-bulat

  I'm quite interested in automatic images translation to 3d models. Not really for commercial product, but from the point of possible academic research and…

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• How to attach two XNA models together?

  - by jeangil

  I go back on unsolved question I asked about attaching two models together, could you give me some help on this ? For example, If I want to attach…

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• Finding graphical help? [duplicate]

  - by Jim Hurley

  This question already has an answer here: Where can I go to find a game graphic artist? [on hold] …

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• Vertex data split into separate buffers or one one structure?

  - by kiba2

  Is it better to have all vertex data in one structure like this: class MyVertex { int x,y,z; int u,v; int normalx,…

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• From a 3D modeler to an iPhone app - what are best practices?

  - by bonkey

  I am quite new in 3D programming on iPhone and I would like to ask for hints about organizing a work between designers and programmers on…

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• Webcam to 3D scanner

  - by Luke

  Is there any software which will allow my webcam to turn into a 3d scanner?

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• Mac OS X in Virtual Box - no 3D acceleration

  - by Andrew

  I installed Mac OS X on my pc in virtualbox, but 3D acceleration doesn't work!

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• 2d & 3d CAD software on the MAC [closed]

  - by Mark Smith

  Hey I was wondering what 2d & 3d CAD softwares people use on the mac? There are a couple of other questions like this on the site but…

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• Hacked website, code is encrypted in hex, unable to identify

  - by dhakad

  my web site hacked and i am getting code in index page, but i am unable to find that where is the code in my web site... …

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• Going For Gold: AngloGold Ashanti and Oracle Spatial 11g

  - by stephen.garth

  Save The Date: May 6 at 11:00am Pacific time Attend this free Directions Media live webinar to find out how AngloGold…

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