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• sprintf in Delphi?

  - by kroimon

  Hi there! Does anyone know a 100% clone of the C/C++ printf for Delphi? Yes, I know the System.Format function, but it handles things a little different. For example if you want to format 3 to "003" you need "%03d" in C, but "%.3d" in Delphi. I have an application written in Delphi which has to be able to format numbers using C format strings, so do you know a snippet/library for that? Thanks in advance!

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• Detect marker with opencv and python

  - by Mitch

  Hi im trying to detect a marker in a webcam video feed and overlay it with a 3d object - pretty much exactly like this: http://www.morethantechnical.com/2009/06/28/augmented-reality-with-nyartoolkit-opencv-opengl/ i know artoolkit is the best module for this, but i was hoping to just use opencv in python since i dont know nearly enough c/c++ to be able to use artoolkit. im hoping someone will be able to get me on the right track towards detecting the marker and determining its location and orientation etc since i have no idea how best to go about this or what functions i should be using thanks mitch

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• Saddle roof algorithm

  - by user115621

  Hello, I have map (openstreetmap project) with many buildings. Each building is a polygon. How can I make saddle roof parts polygons for every building outline? Algorithm should transform one polygon in 2D to set of polygons in 2D (or 3D). Reason for this transformation is visualization - better rendering isometric view. For example (shading isn't important): Thanks

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• Map API with Building Elevation

  - by Laserallan

  Hi! I'm looking for a map API where I can get detailed elevation for points. I'm not looking elevation differences for certain paths along roads on the map but actual building heights. Getting the the 3d meshes for buildings would also be fine since I can compute the height myself using that information. Does any of the map API's out there support giving out this kind of information?

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• What does JSLint's "Bad Escapement" mean in this case?

  - by karlthorwald

  I thougth "bad escapement" stands for wrong use escaping with slash. Why does JSLint bring up the message in this function on the 3d line (for...) ? function splitTags(commaSeparated) { var tagArray = commaSeparated.split(','); for (var i=tagArray.length - 1; i>=0; --i ){ tagArray[i] = f.trim(tagArray[i]); } return tagArray; }

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• How do I set GIT to use Plink.exe

  - by Terminal58

  I'm trying to configure Git to use Plink, now for some reason this option isn't available to me http://s3.amazonaws.com/Devlicious/CommunityServer.Blogs.Components.WeblogFiles/sergio_pereira/2009/05/msysgit-2.png?AWSAccessKeyId=0KMA35HT86EVXB99Z302&Expires=1275854459&Signature=D%2bkwVkPK93Zfw3h3tcH5ivOt3/0%3d I tried uninstalling and reinstalling Git a hundred times I can't get to this option

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• Real time complex raster image morphing in Flash CS4

  - by cosmorocket

  Is there a way to load an image from some url or a local folder and then make some complex morphing to it in real time? For example, I have a vector animated pseudo 3D paper in my project that, for example, is being flipped different ways. Then I want to place some image inside that paper box and want to morph that image accordingly to the box form changes or at least make it look more realistically, not exactly the same as the paper box. Thanks.

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• Can i use jmonkeyengine on android?

  - by Ralf

  Hi, i', trying to make a simple 3d game for android, and i want to use jmonkeyengine, Can i do this? How can i do it? Someboy can show me an example? thanks!!!

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• iPhone Game Developers - What does your toolchain look like?

  - by slf

  For example: source control: git + adobe drive 3d: google sketchup - *.dae - blender - *.obj 2d: photoshop/illustrator - *.png audio: audacity - *.caf code: ArgoUML, Xcode, Textmate test: OCUnit build: rake, Xcode Feel free to mention any other tools that you think are awesome :) Changed to Community Wiki

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• C++/STL: std::transform with given stride?

  - by Arman

  Hello, I have a 1d array containing Nd data, I would like to effectively traverse on it with std::transform or std::for_each. unigned int nelems; unsigned int stride=3;// we are going to have 3D points float *pP;// this will keep xyzxyzxyz... Load(pP); std::transform(pP, pP+nelems, strMover<float>(pP, stride));//How to define the strMover?? Kind Regards, Arman.

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• 3-d game programming

  - by Ygam

  what programming language/languages do they use to produce games lik Bioware's Dragon Age Origins and some other 3-d games like Call of Duty? If I would like to do 3d-game programming, where do I start? Are there even simple tutorials for this? I would like to do 3-d game programming for PC games:)

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• Grayscale in matlab

  - by ruthenium

  I'm trying to convert a 2D array to grayscale but using mat2gray doesn't do anything and imshow() appears to create a binary image that when I graph I cannot rotate it, e.g. the original array is 2d but maps in 3d. So, what is the best way to take a grayscale of 2d array in Matlab so if you have A=rand(5,10) or something and want to take a grayscale of that, what is the best way?

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• How to implement translation & rotation widgets for game level editor.

  - by Rushi

  I am developing game editor.To detect mouse hit on 3D model I am using mouse picking concept. But I want to implement translation & rotation widgets like other game editor with actual arrows at the center of model in three direction. How to achieve this..?

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• Where to start lean OpenGL ES for basic 2D drawing?

  - by mystify

  all I want is really absolutely basic 2D drawing stuff. Rectangles, circles, paths, curves, béziers and so on. No 3D model meshes with all this texturing and lighting. Is there a good starting point which shows fast results for having some fun?

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• Generating video or images of geometrical objects from data

  - by Jonathan Barbero

  Hello, I'm working in a course's project to predict the velocity and position of the solar system planets (and other objects). It will be really cool if I can visualize the predicted objects data, if it's possible generating 3D images, if in video that's amazing. Do you know any library that lets me to use this data to generate an image or video? (I don't care in which language) Data: - simulation step (time line step for a video) - positions of the objects - radius and/or colours of the objects Thanks in advance, any suggestion is welcome.

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• Are Icon design UI guidelines still valid ?

  - by Pavel Lahoda

  Found UI guidelines of Launcher icon design http://d.android.com/guide/practices/ui_guidelines/icon_design.html but System Icons in recent Android releases doesn't seem to follow these guidelines (icons are flat instead simplified 3D perspective, as described in document). Are they already obsolete and what are the current guidelines ?

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• Adobe Flash or After Effects: How to make a piece of virtual paper blow away?

  - by Allen G

  About a month ago I saw a portfolio website in Flash that featured a stack of cards, and each time you clicked on it, they sort of blew all over the place, thus exposing the backs as videos and pictures. Although I could easily take a bunch of 3D planes and tween them to turn and flip, these cards actually seemed to 'bend'. How is this effect achieved? Sorry I don't have the link to the example. Thanks!

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• iPhone: Where to Start Learning OpenGL ES for basic 2D drawing?

  - by mystify

  All I want is really absolutely basic 2D drawing stuff e.g. rectangles, circles, paths, curves, béziers and so on. I don't need all the 3D model meshes with all this texturing and lighting. Is there a good learning resource for a fast startup programming just for fun?

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• Alternative of touchesMoved in Unity3D

  - by Arman

  - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [[event allTouches] anyObject]; CGPoint location = [touch locationInView:touch.view]; CGPoint xLocation = CGPointMake(location.x,racquet_yellow.center.y); racquet_yellow.center = xLocation; } The above event move recquet_yellow(UIImageView) with mouse pointer, or when I move thumb on iPhone screen, I have 3D Object in Unity3D how can I move my object like recquet_yellow. Kindly guide me.

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• Stack overflow - how to increase memory allocation to program

  - by Vaibhav

  When I try to initialize a 3D array of size 300*300*4 in a C program, my program stops running and reports stack overflow error. The system I am using has 3GB RAM, which should be sufficeint. Is there any way to increase memory allocated to a program? I am using Dev C++ on Windows Vista.

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• Cleaning all inline events from HTML tags

  - by Itay Moav

  For HTML input, I want to neutralize all HTML elements that have inline js (onclick="..", onmouseout=".." etc). I am thinking, isn't it enough to encode the following chars? =,(,) So onclick="location.href='ggg.com'" will become onclick%3D"location.href%3D'ggg.com'" What am I missing here? Edit: I do need to accept active HTML (I can't escape it all or entities is it).

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• What is a good tutorial for learning vmr-9?

  - by Mr Bell

  I need to combine 3d models from direct3d on top of a web cam feed. I hear vmr-9 is a good way to go, but I need tutorials. Anyone know of any? visual studio 2008 c++

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• How can I iterate over only the first variable of a tuple

  - by Peter Smit

  In python, when you have a list of tuples, you can iterate over them. For example when you have 3d points then: for x,y,z in points: pass # do something with x y or z What if you only want to use the first variable, or the first and the third. Is there any skipping symbol in python?

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• Given an octree of voxels, how do you render with smooth surfaces?

  - by Pyrolistical

  I noticed most 3d voxel models are actually pretty low resolution, but then are rendered all smoothed out with some sort of interpolation. Given its ray traced, what is the algorithm used to render it smoothly? Could anybody suggest a book on the topic?

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• C printf in Delphi?

  - by kroimon

  Hi there! Does anyone know a 100% clone of the C/C++ printf for Delphi? Yes, I know the System.Format function, but it handles things a little different. For example if you want to format 3.14 to "003" you need "%03d" in C, but "%.3d" in Delphi. I have an application written in Delphi which has to be able to format numbers using C format strings, so do you know a snippet/library for that? Thanks in advance!

  Read the article

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