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2014/10/15 ¤U¤È 10:05:33
iphone Programming Glossary: coordinateForward geocoding from the iPhone http://stackoverflow.com/questions/1140404/forward-geocoding-from-the-iphone today can anyone provide help on how I can i use a search bar to return a latitude and longitude coordinate from a user inputted address today. If someone can provide sample code that would be great. iphone..
http://stackoverflow.com/questions/1166444/mkmapview-zoom-and-region 0 span latitudeDelta 8 longitudeDelta 6 The region could be described using its min and max coordinates as follows min coordinate lower left hand point latitude 4 longitude 3 max coordinate upper right hand.. 8 longitudeDelta 6 The region could be described using its min and max coordinates as follows min coordinate lower left hand point latitude 4 longitude 3 max coordinate upper right hand point latitude 4 longitude.. min and max coordinates as follows min coordinate lower left hand point latitude 4 longitude 3 max coordinate upper right hand point latitude 4 longitude 3 So you can specify zoom levels around a center point by..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview checkButtonTapped forControlEvents UIControlEventTouchUpInside Then in touch handler touch coordinate retrieved and index path is calculated from that coordinate void checkButtonTapped id sender CGPoint.. Then in touch handler touch coordinate retrieved and index path is calculated from that coordinate void checkButtonTapped id sender CGPoint buttonPosition sender convertPoint CGPointZero toView self.tableView..
Changing my CALayer's anchorPoint moves the view http://stackoverflow.com/questions/1968017/changing-my-calayers-anchorpoint-moves-the-view of the layer you are then setting the location of the center of the layer in its superlayer's coordinate system. Because the position is relative to the anchorPoint of the layer changing that anchorPoint while..
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew A naive transformation rule is y c x' x p1.x ”——————†p1.x p1.y c y' y where c is the y coordinate of the intersection point of the lines joining p1 and p3 and p2 and p4. Now notice the x y factor in.. T . U 1 w' with appropriate P Q R S T U that maps the 4 points to the expected locations. 6 unique coordinates and 6 variables should have exactly 1 solution most of the cases. When you have found these 6 constants..
What does an underscore signify in the name of a member variable in Objective-C? [duplicate] http://stackoverflow.com/questions/5659156/what-does-an-underscore-signify-in-the-name-of-a-member-variable-in-objective-c The code is as below @interface MapDemoAnnotation NSObject MKAnnotation CLLocationCoordinate2D _coordinate id initWithCoordinate CLLocationCoordinate2D coordinate @end @implementation MapDemoAnnotation @synthesize.. MKAnnotation CLLocationCoordinate2D _coordinate id initWithCoordinate CLLocationCoordinate2D coordinate @end @implementation MapDemoAnnotation @synthesize coordinate _coordinate id initWithCoordinate CLLocationCoordinate2D.. CLLocationCoordinate2D coordinate @end @implementation MapDemoAnnotation @synthesize coordinate _coordinate id initWithCoordinate CLLocationCoordinate2D coordinate self super init if self nil _coordinate..
OpenGL Texture Coordinates in Pixel Space http://stackoverflow.com/questions/5879403/opengl-texture-coordinates-in-pixel-space I'm working on an iPhone app that uses OpenGL ES 2 for its drawing. I know that typically texture coordinates are defined in the 0 1 range but ideally I'd like to map them from 0 1023 the size of my TextureAtlas.. from 0 1023 the size of my TextureAtlas for readability's sake. I've seen sample code that defines coordinates in this manner but haven't been able to suss out what previous calls were made that allowed for this... between pixels. You however want to hit the pixels' centers. So you're interested in the texture coordinates 0 8 1 8 2 1 2 8 1 8 2 8 2 3 2 8 ... 7 8 8 8 2 15 2 8 Or more generally for pixel i in a N wide texture..
MKAnnotationView - Lock custom annotation view to pin on location updates http://stackoverflow.com/questions/6392931/mkannotationview-lock-custom-annotation-view-to-pin-on-location-updates Any ideas Update #1 After playing around here's where I've gotten replaced self.calloutAnnotation.coordinate coords with self.calloutAnnotation.latitude coords.latitude self.calloutAnnotation.longitude coords.longitude.. CLLocation location notif.userInfo objectForKey @ location CLLocationCoordinate2D coords location coordinate MKCoordinateSpan span MKCoordinateSpanMake 5 69 5 69 MKCoordinateRegion region coords span if we don't.. this moves my annotation view perfectly self.currentLocationAnnotation.coordinate coords this is where my problem is this custom callout annotation view stays in it's original place..
Customize the MKAnnotationView callout http://stackoverflow.com/questions/8018841/customize-the-mkannotationview-callout way I've seen to implement custom annotations. Start with a NSObject Content class which has a coordinate the class of the callout view to use in the UML is AnnotationView but you can create more and set them.. MapKit MapKit.h @interface Content NSObject @property nonatomic assign CLLocationCoordinate2D coordinate ... @interface Annotation NSObject MKAnnotation AnnotationProtocol id initWithContent Content content..
Forward geocoding from the iPhone http://stackoverflow.com/questions/1140404/forward-geocoding-from-the-iphone the mapkit doesn't provide forward geocoding functionality today can anyone provide help on how I can i use a search bar to return a latitude and longitude coordinate from a user inputted address today. If someone can provide sample code that would be great. iphone ios geolocation geocoding share improve this question iOS..
http://stackoverflow.com/questions/1166444/mkmapview-zoom-and-region Here's a toy MKCoordinateRegion center latitude 0 longitude 0 span latitudeDelta 8 longitudeDelta 6 The region could be described using its min and max coordinates as follows min coordinate lower left hand point latitude 4 longitude 3 max coordinate upper right hand point latitude 4 longitude 3 So you can specify zoom levels.. center latitude 0 longitude 0 span latitudeDelta 8 longitudeDelta 6 The region could be described using its min and max coordinates as follows min coordinate lower left hand point latitude 4 longitude 3 max coordinate upper right hand point latitude 4 longitude 3 So you can specify zoom levels around a center point by.. 8 longitudeDelta 6 The region could be described using its min and max coordinates as follows min coordinate lower left hand point latitude 4 longitude 3 max coordinate upper right hand point latitude 4 longitude 3 So you can specify zoom levels around a center point by using an appropriately sized MKCoordinateSpan. As an approximation..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview the following method is used button addTarget self action @selector checkButtonTapped forControlEvents UIControlEventTouchUpInside Then in touch handler touch coordinate retrieved and index path is calculated from that coordinate void checkButtonTapped id sender CGPoint buttonPosition sender convertPoint CGPointZero toView self.tableView.. checkButtonTapped forControlEvents UIControlEventTouchUpInside Then in touch handler touch coordinate retrieved and index path is calculated from that coordinate void checkButtonTapped id sender CGPoint buttonPosition sender convertPoint CGPointZero toView self.tableView NSIndexPath indexPath self.tableView indexPathForRowAtPoint..
Changing my CALayer's anchorPoint moves the view http://stackoverflow.com/questions/1968017/changing-my-calayers-anchorpoint-moves-the-view which lies at the center of the layer. When you set the position of the layer you are then setting the location of the center of the layer in its superlayer's coordinate system. Because the position is relative to the anchorPoint of the layer changing that anchorPoint while maintaining the same position moves the layer. In order..
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew p1 p2 p1 p2 p3 p4 p3 p4' Another to the vertical direction. A naive transformation rule is y c x' x p1.x ”——————†p1.x p1.y c y' y where c is the y coordinate of the intersection point of the lines joining p1 and p3 and p2 and p4. Now notice the x y factor in the transformation. This indicates such a transform is not.. the transform P . . Q x x' . R . S y y' . . 1 . z z' . T . U 1 w' with appropriate P Q R S T U that maps the 4 points to the expected locations. 6 unique coordinates and 6 variables should have exactly 1 solution most of the cases. When you have found these 6 constants you can craft a CATransform3D . Notice the structure definition..
What does an underscore signify in the name of a member variable in Objective-C? [duplicate] http://stackoverflow.com/questions/5659156/what-does-an-underscore-signify-in-the-name-of-a-member-variable-in-objective-c C. Recently I started on a tutorial that I found on net. The code is as below @interface MapDemoAnnotation NSObject MKAnnotation CLLocationCoordinate2D _coordinate id initWithCoordinate CLLocationCoordinate2D coordinate @end @implementation MapDemoAnnotation @synthesize coordinate _coordinate id initWithCoordinate CLLocationCoordinate2D.. net. The code is as below @interface MapDemoAnnotation NSObject MKAnnotation CLLocationCoordinate2D _coordinate id initWithCoordinate CLLocationCoordinate2D coordinate @end @implementation MapDemoAnnotation @synthesize coordinate _coordinate id initWithCoordinate CLLocationCoordinate2D coordinate self super init if self nil _coordinate.. MKAnnotation CLLocationCoordinate2D _coordinate id initWithCoordinate CLLocationCoordinate2D coordinate @end @implementation MapDemoAnnotation @synthesize coordinate _coordinate id initWithCoordinate CLLocationCoordinate2D coordinate self super init if self nil _coordinate coordinate return self @end Can anyone please explain..
OpenGL Texture Coordinates in Pixel Space http://stackoverflow.com/questions/5879403/opengl-texture-coordinates-in-pixel-space Texture Coordinates in Pixel Space I'm working on an iPhone app that uses OpenGL ES 2 for its drawing. I know that typically texture coordinates are defined in the 0 1 range but ideally I'd like to map them from 0 1023 the size of my TextureAtlas for readability's sake. I've seen sample code that defines.. defined in the 0 1 range but ideally I'd like to map them from 0 1023 the size of my TextureAtlas for readability's sake. I've seen sample code that defines coordinates in this manner but haven't been able to suss out what previous calls were made that allowed for this. glMatrixMode GL_TEXTURE seems like it might be involved but.. 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 0 8 1 8 2 1 2 8 1 8 2 8 2 3 2 8 ... 7 8 8 8 2 15 2 8 Or more generally for pixel i in a N wide texture the proper texture coordinate is 2i 1 2N However if you..
MKAnnotationView - Lock custom annotation view to pin on location updates http://stackoverflow.com/questions/6392931/mkannotationview-lock-custom-annotation-view-to-pin-on-location-updates and the callout annotation will pop back to it's parent. Any ideas Update #1 After playing around here's where I've gotten replaced self.calloutAnnotation.coordinate coords with self.calloutAnnotation.latitude coords.latitude self.calloutAnnotation.longitude coords.longitude With that changed if I slightly pinch the map to zoom.. void locationManagerDidFindLocation NSNotification notif CLLocation location notif.userInfo objectForKey @ location CLLocationCoordinate2D coords location coordinate MKCoordinateSpan span MKCoordinateSpanMake 5 69 5 69 MKCoordinateRegion region coords span if we don't have a current location yet create one place it on the map.. setAnimationDuration 0.45 UIView setAnimationCurve UIViewAnimationCurveEaseInOut this moves my annotation view perfectly self.currentLocationAnnotation.coordinate coords this is where my problem is this custom callout annotation view stays in it's original place even though it's parent annotation view is moving around..
Customize the MKAnnotationView callout http://stackoverflow.com/questions/8018841/customize-the-mkannotationview-callout from a forked project This is a big hack but also the cleanest way I've seen to implement custom annotations. Start with a NSObject Content class which has a coordinate the class of the callout view to use in the UML is AnnotationView but you can create more and set them here and a dictionary of random values with the title photo.. class to initialize a MKAnnotation Annotation object. #import MapKit MapKit.h @interface Content NSObject @property nonatomic assign CLLocationCoordinate2D coordinate ... @interface Annotation NSObject MKAnnotation AnnotationProtocol id initWithContent Content content ... The Annotation implements AnnotationProtocol to announce..
Forward geocoding from the iPhone http://stackoverflow.com/questions/1140404/forward-geocoding-from-the-iphone functionality today can anyone provide help on how I can i use a search bar to return a latitude and longitude coordinate from a user inputted address today. If someone can provide sample code that would be great. iphone ios geolocation geocoding..
http://stackoverflow.com/questions/1166444/mkmapview-zoom-and-region latitude 0 longitude 0 span latitudeDelta 8 longitudeDelta 6 The region could be described using its min and max coordinates as follows min coordinate lower left hand point latitude 4 longitude 3 max coordinate upper right hand point latitude 4.. 0 span latitudeDelta 8 longitudeDelta 6 The region could be described using its min and max coordinates as follows min coordinate lower left hand point latitude 4 longitude 3 max coordinate upper right hand point latitude 4 longitude 3 So you can specify.. described using its min and max coordinates as follows min coordinate lower left hand point latitude 4 longitude 3 max coordinate upper right hand point latitude 4 longitude 3 So you can specify zoom levels around a center point by using an appropriately..
Cocoa: What's the Difference between the frame and the bounds? http://stackoverflow.com/questions/1210047/cocoa-whats-the-difference-between-the-frame-and-the-bounds The bounds of an UIView is the rectangle expressed as a location x y and size width height relative to its own coordinate system 0 0 . The frame of an UIView is the rectangle expressed as a location x y and size width height relative to the superview.. at the bounds or frame. What is different is the x y positioning of the view. In the case of the bounds the x and y coordinates are at 0 0 as these coordinates are relative to the view itself. However the frame x and y coordinates are relative to.. is different is the x y positioning of the view. In the case of the bounds the x and y coordinates are at 0 0 as these coordinates are relative to the view itself. However the frame x and y coordinates are relative to the position of the view within..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview self action @selector checkButtonTapped forControlEvents UIControlEventTouchUpInside Then in touch handler touch coordinate retrieved and index path is calculated from that coordinate void checkButtonTapped id sender CGPoint buttonPosition sender.. UIControlEventTouchUpInside Then in touch handler touch coordinate retrieved and index path is calculated from that coordinate void checkButtonTapped id sender CGPoint buttonPosition sender convertPoint CGPointZero toView self.tableView NSIndexPath..
Changing my CALayer's anchorPoint moves the view http://stackoverflow.com/questions/1968017/changing-my-calayers-anchorpoint-moves-the-view you set the position of the layer you are then setting the location of the center of the layer in its superlayer's coordinate system. Because the position is relative to the anchorPoint of the layer changing that anchorPoint while maintaining the..
How to search MKMapView with UISearchBar? http://stackoverflow.com/questions/2281798/how-to-search-mkmapview-with-uisearchbar be a hard thing to do but I'm really clueless about how to input a Street Address in the search bar and then obtaining coordinates for that address or something that can help me to actually move the map and center in that place. I mean what do I have.. several reasons I chose to go with JSON. So here are the steps to perform a JSON query to Google Maps and obtain the coordinate of the query. Note that not all the correct validations are done this is only a Proof of concept. 1 Download a JSON framework.. magic to obtain a dictionary from the jsonString. NSDictionary results jsonString JSONValue Now we need to obtain our coordinates NSArray placemark results objectForKey @ Placemark NSArray coordinates placemark objectAtIndex 0 valueForKeyPath @ Point.coordinates..
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew vertical direction. A naive transformation rule is y c x' x p1.x ”——————†p1.x p1.y c y' y where c is the y coordinate of the intersection point of the lines joining p1 and p3 and p2 and p4. Now notice the x y factor in the transformation... y y' . . 1 . z z' . T . U 1 w' with appropriate P Q R S T U that maps the 4 points to the expected locations. 6 unique coordinates and 6 variables should have exactly 1 solution most of the cases. When you have found these 6 constants you can craft a..
What does an underscore signify in the name of a member variable in Objective-C? [duplicate] http://stackoverflow.com/questions/5659156/what-does-an-underscore-signify-in-the-name-of-a-member-variable-in-objective-c that I found on net. The code is as below @interface MapDemoAnnotation NSObject MKAnnotation CLLocationCoordinate2D _coordinate id initWithCoordinate CLLocationCoordinate2D coordinate @end @implementation MapDemoAnnotation @synthesize coordinate _coordinate.. NSObject MKAnnotation CLLocationCoordinate2D _coordinate id initWithCoordinate CLLocationCoordinate2D coordinate @end @implementation MapDemoAnnotation @synthesize coordinate _coordinate id initWithCoordinate CLLocationCoordinate2D coordinate.. _coordinate id initWithCoordinate CLLocationCoordinate2D coordinate @end @implementation MapDemoAnnotation @synthesize coordinate _coordinate id initWithCoordinate CLLocationCoordinate2D coordinate self super init if self nil _coordinate coordinate return..
OpenGL Texture Coordinates in Pixel Space http://stackoverflow.com/questions/5879403/opengl-texture-coordinates-in-pixel-space in Pixel Space I'm working on an iPhone app that uses OpenGL ES 2 for its drawing. I know that typically texture coordinates are defined in the 0 1 range but ideally I'd like to map them from 0 1023 the size of my TextureAtlas for readability's.. like to map them from 0 1023 the size of my TextureAtlas for readability's sake. I've seen sample code that defines coordinates in this manner but haven't been able to suss out what previous calls were made that allowed for this. glMatrixMode GL_TEXTURE.. filtering the border between pixels. You however want to hit the pixels' centers. So you're interested in the texture coordinates 0 8 1 8 2 1 2 8 1 8 2 8 2 3 2 8 ... 7 8 8 8 2 15 2 8 Or more generally for pixel i in a N wide texture the proper texture..
MKAnnotationView - Lock custom annotation view to pin on location updates http://stackoverflow.com/questions/6392931/mkannotationview-lock-custom-annotation-view-to-pin-on-location-updates back to it's parent. Any ideas Update #1 After playing around here's where I've gotten replaced self.calloutAnnotation.coordinate coords with self.calloutAnnotation.latitude coords.latitude self.calloutAnnotation.longitude coords.longitude With that.. NSNotification notif CLLocation location notif.userInfo objectForKey @ location CLLocationCoordinate2D coords location coordinate MKCoordinateSpan span MKCoordinateSpanMake 5 69 5 69 MKCoordinateRegion region coords span if we don't have a current location.. UIViewAnimationCurveEaseInOut this moves my annotation view perfectly self.currentLocationAnnotation.coordinate coords this is where my problem is this custom callout annotation view stays in it's original place even though it's..
Customize the MKAnnotationView callout http://stackoverflow.com/questions/8018841/customize-the-mkannotationview-callout but also the cleanest way I've seen to implement custom annotations. Start with a NSObject Content class which has a coordinate the class of the callout view to use in the UML is AnnotationView but you can create more and set them here and a dictionary.. object. #import MapKit MapKit.h @interface Content NSObject @property nonatomic assign CLLocationCoordinate2D coordinate ... @interface Annotation NSObject MKAnnotation AnnotationProtocol id initWithContent Content content ... The Annotation..
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