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2014/10/15 ¤U¤È 10:05:24
iphone Programming Glossary: computingHow to change thin image to fat image in iPhone SDK? http://stackoverflow.com/questions/10186200/how-to-change-thin-image-to-fat-image-in-iphone-sdk posed lit and shot under carefully controlled conditions in order to get good results. It might be too much for the computing power of current iOS devices and the kind of image recognition you'd need to do to figure out the body parts and how to..
Maximum speed from IOS/iPad/iPhone http://stackoverflow.com/questions/11219240/maximum-speed-from-ios-ipad-iphone speed from IOS iPad iPhone I done computing intensive app using OpenCV for iOS . Of course it was slow. But it was something like 200 times slower than my PC prototype...
Drag UIView around Shape Comprised of CGMutablePaths http://stackoverflow.com/questions/13664615/drag-uiview-around-shape-comprised-of-cgmutablepaths to our newly discovered point handlePathPointIndex_ offset self layoutHandleView That just leaves the small matter of computing the distance from the handle to a point should the handle be moved along the path by some offset. Your old buddy hypotf.. proposedHandlePoint.y You could speed things up by using squared distances to avoid the square roots that hypotf is computing. One more tiny detail the index into the points array needs to wrap around in both directions. That's what we've been relying..
How to detect sound frequency for particular sound in iphone? http://stackoverflow.com/questions/13950358/how-to-detect-sound-frequency-for-particular-sound-in-iphone some sample codes iphone ios signal processing share improve this question Detecting a single frequency or even computing a single FFT is not a reliable method for differentiating a dog bark from other common sounds of around the same volume...
Web based method to determine if an iPhone is connected via 3G or Wifi http://stackoverflow.com/questions/1579795/web-based-method-to-determine-if-an-iphone-is-connected-via-3g-or-wifi as much as you do about bandwidth roundtrip time. I wonder if you can achieve this by not detecting 3G vs WiFi but by computing round trip time using a browser script and using that to determine the fidelity of the user experience. share improve this..
How to check if UILabel is truncated? http://stackoverflow.com/questions/3077109/how-to-check-if-uilabel-is-truncated string and see if the width is greater than label.bounds.size.width NSString UIKit Additions has several methods for computing the size of the string with a specific font. However if you have a minimumFontSize for your label that allows the system..
Corelocation incorrect distances http://stackoverflow.com/questions/3093919/corelocation-incorrect-distances far in a few seconds but only the accuracy has changed. Don't use two locations that have very different accuracy for computing distance traveled. EDIT Added code sample how to ignore old location data. You decide how old to ignore I used 60 seconds..
Are either the IPad or IPhone capable of OpenCL? http://stackoverflow.com/questions/3258257/are-either-the-ipad-or-iphone-capable-of-opencl with it the Accelerate framework which gives you access to many common vector based operations for high performance computing on the CPU. See Session 202 The Accelerate framework for iPhone OS in the WWDC 2010 videos for more on this. share improve..
Mobile developer interview questions, that a non-mobile developer can ask [closed] http://stackoverflow.com/questions/4391495/mobile-developer-interview-questions-that-a-non-mobile-developer-can-ask systems So that's that. A question is what SPECIFICALLY are you going to be doing in general terms ie scientific computing game development marketing apps to get rich in house catalogs hand held clients or If you tell us we can tell you what they..
problem with rendering pdf on the entire screen of pdf http://stackoverflow.com/questions/4634331/problem-with-rendering-pdf-on-the-entire-screen-of-pdf objective c ipad share improve this question Pages in PDF files don't have a standard size. And since you are computing the scale to retain the correct aspect ratio not all of your PDF files will take up the entire screen. Based on your code..
How to draw a color wheel in objective-c http://stackoverflow.com/questions/5108921/how-to-draw-a-color-wheel-in-objective-c this question The following draws an HSL color wheel in a UIView subclass. It does this by generating a bitmap by computing for each pixel the correct color value. This is not exactly what you're trying to do looks like it's just hue varies in..
Rotate a Sprite on a bezier path with touch - Cocos2D/Box2D http://stackoverflow.com/questions/7494795/rotate-a-sprite-on-a-bezier-path-with-touch-cocos2d-box2d float f k tan a float x2 x1 f y4 float y2 y1 f x4 float x3 x2 float y3 y2 Find the arc points actual locations by computing x1 y1 and x4 y4 and rotating the control points by a a1 float ar a a1 float cos_ar cosf ar float sin_ar sinf ar return NSArray..
Detecting blowing on the iPhone microphone? http://stackoverflow.com/questions/795968/detecting-blowing-on-the-iphone-microphone e.g. every 1 30 of a second double instantaneousPower SCListener sharedListener peakPower This is the key line in computing the low pass filtered value micPower ALPHA instantaneousPower 1.0 ALPHA micPower if micPower THRESHOLD 0.99 in your example..
http://stackoverflow.com/questions/802879/iphone-and-crypto-libraries export compliance assessment. My cursory reading on the relevant documents suggests that what used to be the ancillary computing exemption is now narrower but there are still several exemptions in the requirements for an ERN. See @JosephH's answer for.. review if your product falls into the Ancillary Cryptography category. This is defined as not primarily useful for computing including the operation of 'digital computers' communications networking includes operation administration management and..
Detecting iPhone mute switch in iOS 5 http://stackoverflow.com/questions/8158087/detecting-iphone-mute-switch-in-ios-5 even though my iPhone was muted the audio file still played the entire duration. I'm using AVAudioPlayer play and computing the time before audioPlayerDidFinishPlaying is called. Do you know of a trick to play an audio file which will complete..
Draw glow around inside edge of multiple CGPaths http://stackoverflow.com/questions/8480401/draw-glow-around-inside-edge-of-multiple-cgpaths share improve this question What you are asking for is the union of bezier paths. Apple doesn't ship any APIs for computing the union of paths. It is in fact a rather complicated algorithm. Here are a couple of links http www.cocoadev.com index.pl.. what you want to do with the union path we might be able to suggest some alternatives that don't require actually computing the union. You can draw a pretty decent inner glow without actually computing the union of the paths. Instead make a bitmap... alternatives that don't require actually computing the union. You can draw a pretty decent inner glow without actually computing the union of the paths. Instead make a bitmap. Fill each path on the bitmap. You'll use this as the mask. Next create an..
http://stackoverflow.com/questions/8723923/core-data-vs-sqlite-or-fmdb Data. Why Once you get the hang of it and build out a few little helper methods Core Data keeps you in a consistent computing world the Objective C object graph. Core Data will teach you things about how to use a dynamic language that will help every..
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