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2014/10/15 ¤U¤È 10:11:57
iphone Programming Glossary: nearestCorrecting floating point numbers http://stackoverflow.com/questions/10049533/correcting-floating-point-numbers binary representation of the value and only have so many bits to use so they quickly run out and have to round to the nearest value that they are capable of representing. Typically you don't worry about the .0000001 and just format them when you..
Should I be worried about rumors that Apple will stop using Google Maps in iOS6? [closed] http://stackoverflow.com/questions/10964585/should-i-be-worried-about-rumors-that-apple-will-stop-using-google-maps-in-ios6 provide map data. Some features invoke the Google Maps app to provide transit planning and turn by turn directions to nearest stops. My question If the rumors turn out to be true do you think Apple will most certainly implement any changes without..
Any idea why this image masking code does not work? http://stackoverflow.com/questions/1133248/any-idea-why-this-image-masking-code-does-not-work CGImageRef image int maskWidth CGImageGetWidth image int maskHeight CGImageGetHeight image round bytesPerRow to the nearest 16 bytes for performance's sake int bytesPerRow maskWidth 15 0xfffffff0 int bufferSize bytesPerRow maskHeight allocate memory..
OpenGL ES 2.0 texture distortion on large geometry GL_REPEAT http://stackoverflow.com/questions/11370074/opengl-es-2-0-texture-distortion-on-large-geometry-gl-repeat limit the linear interpolation in mid texture. That's how the hardware works. You can work around the issue by using nearest filter texture lookup in a fragment program which calculates the texture lookup modulo your texture tile size and position..
Drag UIView around Shape Comprised of CGMutablePaths http://stackoverflow.com/questions/13664615/drag-uiview-around-shape-comprised-of-cgmutablepaths do it with a figure 8. It'll look like this when we're done So how do we do this Given an arbitrary point finding the nearest point on a Bezier spline is rather complicated. Let's do it by brute force. We'll just make an array of points closely spaced.. laterDistance direction 1 distance earlierDistance else direction 1 distance laterDistance But we've only checked the nearest neighbors of the handle's starting point. We want to slide as far as we can along the path in that direction as long as..
Get notified when UITableView has finished asking for data? http://stackoverflow.com/questions/1483581/get-notified-when-uitableview-has-finished-asking-for-data is that I want to preserve the scroll position of the UITableView but right down to the pixel level not just to the nearest row. When restoring the scroll position using scrollRectToVisible animated I need the table view to already have sufficient..
removing jagged edges of my ropes using antialiasing of OpenGLES http://stackoverflow.com/questions/17500418/removing-jagged-edges-of-my-ropes-using-antialiasing-of-opengles or texture edge aliasing or antialiasing. They change the texture's filtering mode between linear antialias blurry and nearest alias no filtering . The effect is that pixels within a texture are either linear filtered and thus individual pixel colors.. is that pixels within a texture are either linear filtered and thus individual pixel colors gradually change whereas nearest filtering does not perform such filtering. Nearest filtering is most commonly needed for pixel art and tilemap tileset textures...
http://stackoverflow.com/questions/2176127/core-data-and-core-location with latitude and longitude properties. Is there a way to use Core Location's getDistanceFrom method to find the five nearest locations to a CLLocation obtained from the GPS Do I have to load all the objects using Core Data and parse through them..
How do I create blurred text in an iPhone view? http://stackoverflow.com/questions/227305/how-do-i-create-blurred-text-in-an-iphone-view using rotated pattern to sample 17 texels . .. . X rotated samples filter across texel corners . .. . Pass one center nearest sample glVertexPointer 2 GL_FLOAT sizeof V2fT2f quad 0 .x glTexCoordPointer 2 GL_FLOAT sizeof V2fT2f quad 0 .s glTexEnvi..
UILabel touch and get the text where touched http://stackoverflow.com/questions/4373053/uilabel-touch-and-get-the-text-where-touched . It discusses how you can create indexed positions in text and ask touches what text position they've landed nearest. Apple's references a sample projected called SimpleTextInput but I can't seem to find it. I'll keep looking. share improve..
Is there an offline geocoding framework, library, or database for iOS? http://stackoverflow.com/questions/4373730/is-there-an-offline-geocoding-framework-library-or-database-for-ios done this you'll be able to implement a basic geocoder because spatialite implements functions such as give me the nearest line to this GPS coord basic GIS feature . These are the very rough lines. I can go in much more deeper details if you're..
http://stackoverflow.com/questions/4537914/webkit-framework-iphone
Disable UIScrollView scrolling when UITextField becomes first responder http://stackoverflow.com/questions/4585718/disable-uiscrollview-scrolling-when-uitextfield-becomes-first-responder is called when a letter is typed into the UITextField. This method seems to act on the UIScrollView of the nearest ancestor of the UITextField. So on textFieldDidBeginEditing by wrapping the UITextField with a new UIScrollView with the..
http://stackoverflow.com/questions/5579327/foursquare-api-for-iphone application I have found the API and also integrate in my application. But there is some problem. I want to show the nearest venue around me. As there is also method to show the venue void searchVenuesNearByLatitude NSString lat longitude NSString..
OpenGL Texture Coordinates in Pixel Space http://stackoverflow.com/questions/5879403/opengl-texture-coordinates-in-pixel-space 8 2 8 3 8 4 8 5 8 6 8 7 8 8 8 The digits denote the texture's pixels the bars the edges of the texture and in case of nearest filtering the border between pixels. You however want to hit the pixels' centers. So you're interested in the texture coordinates..
Some beginner Objective-C/iPhone questions http://stackoverflow.com/questions/710568/some-beginner-objective-c-iphone-questions something called an autorelease pool being created in main.m. Is myObject autorelease a way of adding myObject to the nearest wrapping autorelease pool which will release it Basically some magic to avoid releasing it yourself Why use it Well thats..
Is it possible to select the text rendered by Core Text in iPhone? http://stackoverflow.com/questions/7979592/is-it-possible-to-select-the-text-rendered-by-core-text-in-iphone coordinates . Knowing the line that has the touched point you can know the letter that is located at that point or the nearest letter using CTLineGetStringIndexForPosition . Here's one screenshot. For that loupe I used the code shown in this post..
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