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2014/10/15 ¤U¤È 10:03:37
iphone Programming Glossary: anglesiOS - color on xcode simulator is different from the color on device http://stackoverflow.com/questions/10039641/ios-color-on-xcode-simulator-is-different-from-the-color-on-device following RGB values to get the color I wanted it is only rough and worked for me Red 12 Green 19 Blue 16 Different angles best to keep it horizontal Holding the phone in different angles also gives different shades keeping it horizontal did give..
I am getting Expected identifier in Xcode http://stackoverflow.com/questions/12453000/i-am-getting-expected-identifier-in-xcode am getting Expected identifier in Xcode I'm making an app for iPhone using obj c that finds side lengths and angles for triangles. Part of the app uses the Pythagorean Theorem. NSNumber pySidea NSNumber numberWithInteger sideA text integerValue.. Expected identifier in Xcode I'm making an app for iPhone using obj c that finds side lengths and angles for triangles. Part of the app uses the Pythagorean Theorem. NSNumber pySidea NSNumber numberWithInteger sideA text integerValue NSNumber..
CGAffineTransformMakeRotation counter clockwise always http://stackoverflow.com/questions/13791582/cgaffinetransformmakerotation-counter-clockwise-always then the image rotates clockwise back to its original position. Its apparently taking the shortest path back. As for angles 179 degrees or less the image rotate counter clockwise what i need . I tried both these pieces of code and they behave the..
An iPhone library for shape recognition via the camera http://stackoverflow.com/questions/2093143/an-iphone-library-for-shape-recognition-via-the-camera printed on a piece of paper and I would like to have the camera on the iPhone identify these shapes from different angles lightning etc. . I have used OpenCV a while back Java and I looked at other libraries out there. The caveat is that it seems..
http://stackoverflow.com/questions/3245733/apple-gyroscope-sample-code
http://stackoverflow.com/questions/3841642/curve-text-on-existing-circle angle in mind by rotating the context you are drawing on . I just can't wrap my head around on how to get the right angles and positions for my characters. I included a screenshot on what the menu at the moment look like. Only the texts I added..
Getting displacement from accelerometer data with Core Motion http://stackoverflow.com/questions/4449565/getting-displacement-from-accelerometer-data-with-core-motion on top of a surface and be able to move in space both rotating and displacing to look at the cube in all the different angles. The problem of calibrating the camera doesn't apply here since I ask the user to place the iPhone on the surface he wants..
iPhone - What does the gyroscope measures? Can I get an absolute degree measurement in all axis? http://stackoverflow.com/questions/5112536/iphone-what-does-the-gyroscope-measures-can-i-get-an-absolute-degree-measurem using Core Motion. After a few tests this is my question. What information is exactly the gyroscope measuring absolute angles I mean suppose I hold my phone in portrait at exactly 90 degrees and start sampling. These may be not the correct values..
Point in Tilt Direction - iPhone http://stackoverflow.com/questions/5128861/point-in-tilt-direction-iphone #documentation uikit reference UIAcceleration_Class Reference UIAcceleration.html . converting from accelerometer to angles... the accelerometer doesn't provide the raw data in angles. How do get from the raw data Quite right I forgot to mention.. UIAcceleration.html . converting from accelerometer to angles... the accelerometer doesn't provide the raw data in angles. How do get from the raw data Quite right I forgot to mention it sorry. This is an everyday problem... distanceFactor square.. angle y axis acos y distanceFactor angle z axis acos z distanceFactor You must TEST this by writing the three angles on the screen and then moving it around in other words physically unit test that section you write before you proceed here..
iPhone - understanding iPhone rotation http://stackoverflow.com/questions/5170010/iphone-understanding-iphone-rotation that Why is it giving me a value for pitch if I never changed that How can be pitch influenced by a rotation in other angles thanks. iphone core motion share improve this question Given the case that you can live with delta movements you can.. of q1 q1^ 1 and then you get dQ q1^ 1 q2 If deviceMotionInterval is high enough you always have handy small Euler angles without any 90° singularities or other beasty stuff. The possible drawback of this solution might be a slight drift because..
How to animate the pie charts developed using core-plot library? http://stackoverflow.com/questions/5241740/how-to-animate-the-pie-charts-developed-using-core-plot-library
iOS - How to limit the MapView to a specific region? http://stackoverflow.com/questions/5680896/ios-how-to-limit-the-mapview-to-a-specific-region
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare relative to North matter I guess not. It is far easier to compare the acceleration vectors than orientations Euler angles rotation matrices quaternions as tc pointed that out. If you are using acceleration data you have 3 dimensional vectors..
Help calculating X and Y from Latitude and Longitude in iPhone http://stackoverflow.com/questions/6852195/help-calculating-x-and-y-from-latitude-and-longitude-in-iphone share improve this question I would do this by assuming flat earth approximation and use vector algebra to relate angles and distances in the lat lon space to the x y pixel space. For example I am assuming you know the lat lon for the bottom..
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 ccpToAngle vector CGFloat currentTouch CC_RADIANS_TO_DEGREES rotateAngle keep adding the difference of the two angles to the dial rotation arrowRotation currentTouch previousTouch For example I have a ball sitting on the ground and an arrow..
how to create iphone's wobbling icon effect? http://stackoverflow.com/questions/929364/how-to-create-iphones-wobbling-icon-effect boolValue UIView item UIView context item.transform CGAffineTransformIdentity Probably have to play with timing and angles but this should get you started. EDIT I edited the response to add code to put the item back in its original state when..
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