2014/10/15 下午 10:12:48

iphone Programming Glossary: point.y

iPhone: How to draw line between two points on MapKit?

http://stackoverflow.com/questions/10598322/iphone-how-to-draw-line-between-two-points-on-mapkit

if idx 0 northEastPoint point southWestPoint point else if point.x northEastPoint.x northEastPoint.x point.x if point.y northEastPoint.y northEastPoint.y point.y if point.x southWestPoint.x southWestPoint.x point.x if point.y southWestPoint.y.. point else if point.x northEastPoint.x northEastPoint.x point.x if point.y northEastPoint.y northEastPoint.y point.y if point.x southWestPoint.x southWestPoint.x point.x if point.y southWestPoint.y southWestPoint.y point.y pointArr idx point.. point.x if point.y northEastPoint.y northEastPoint.y point.y if point.x southWestPoint.x southWestPoint.x point.x if point.y southWestPoint.y southWestPoint.y point.y pointArr idx point self.routeLine MKPolyline polylineWithPoints pointArr count..

How do I determine if a coordinate is in the currently visible map region?

http://stackoverflow.com/questions/1197398/how-do-i-determine-if-a-coordinate-is-in-the-currently-visible-map-region

is in view. Is there a better way then this point mapView convertCoordinate coordinate toPointToView nil if point.x 0 point.y 0 Add coordinate to array that is later added to mapView So I am asking convertCoordinate where the point would be on the..

Drag UIView around Shape Comprised of CGMutablePaths

http://stackoverflow.com/questions/13664615/drag-uiview-around-shape-comprised-of-cgmutablepaths

offset CGPoint proposedHandlePoint pathPoints_ index return hypotf point.x proposedHandlePoint.x point.y proposedHandlePoint.y You could speed things up by using squared distances to avoid the square roots that hypotf is computing...

Getting pixel data from UIImageView — works on simulator, not device

http://stackoverflow.com/questions/1911360/getting-pixel-data-from-uiimageview-works-on-simulator-not-device

to the device. I should say not always the odd thing is that it does fetch the correct pixel colour if point.x point.y otherwise it gives me pixel data for a pixel on the other side of that line as if mirrored. So a tap on a pixel in the lower.. size_t height CGImageGetHeight cgImage NSUInteger x NSUInteger floor point.x NSUInteger y height NSUInteger floor point.y if x width y height CGDataProviderRef provider CGImageGetDataProvider cgImage CFDataRef bitmapData CGDataProviderCopyData..

OpenGL ES (iPhone) Touch Picking

http://stackoverflow.com/questions/2231433/opengl-es-iphone-touch-picking

void handleTouch CGPoint point GLfloat width backingWidth GLfloat height backingHeight GLfloat x point.x GLfloat y point.y GLfloat z 0.0f viewport normalized dev coord clip GLfloat n 2 x width 1 2 y height 2 z 1 1 float fov 45.0f M_PI 180.0f float..

How to erase part of an image as the user touches it

http://stackoverflow.com/questions/2978382/how-to-erase-part-of-an-image-as-the-user-touches-it

UIImage erasePointinUIImage IplImage image CGPoint point int r r is the radious of the erasing int a point.x int b point.y int position int minX minY maxX maxY minX a r 0 a r 0 minY b r 0 b r 0 maxX a r image width a r image width maxY b r image..

How can I group MKAnnotations automatically regarding zoom level?

http://stackoverflow.com/questions/3194646/how-can-i-group-mkannotations-automatically-regarding-zoom-level

an.coordinate toPointToView nil CGPoint roundedPoint roundedPoint.x roundf point.x 10 10 roundedPoint.y roundf point.y 10 10 NSValue value NSValue valueWithCGPoint roundedPoint MKAnnotationView av mapView_ viewForAnnotation an if coordSet..

Find the tangent of a point on a cubic bezier curve (on an iPhone)

http://stackoverflow.com/questions/4089443/find-the-tangent-of-a-point-on-a-cubic-bezier-curve-on-an-iphone

p2.y p3.y p4.y the following code simply draws an indication of the tangent CGPoint demo CGPointMake point.x vel.x 0.3 point.y vel.y 0.33 the only reason for the .3 is to make the pointers shorter UIColor whiteColor setStroke UIBezierPath vp UIBezierPath..

iPhone smooth sketch drawing algorithm

http://stackoverflow.com/questions/5076622/iphone-smooth-sketch-drawing-algorithm

i NSValue value points objectAtIndex i CGPoint point value getValue point CGContextAddLineToPoint context point.x point.y CGContextStrokePath context UIGraphicsPushContext context And now I want to improve the drawing tobe more like Sketch Book..

How to write text on image in objective-c iPhone?

http://stackoverflow.com/questions/6992830/how-to-write-text-on-image-in-objective-c-iphone

image.size image drawInRect CGRectMake 0 0 image.size.width image.size.height CGRect rect CGRectMake point.x point.y image.size.width image.size.height UIColor whiteColor set text drawInRect CGRectIntegral rect withFont font UIImage newImage..

UIScrollView : paging horizontally, scrolling vertically?

http://stackoverflow.com/questions/728014/uiscrollview-paging-horizontally-scrolling-vertically

point touches anyObject locationInView self if fabsf _originalPoint.x point.x kThresholdX fabsf _originalPoint.y point.y kThresholdY _isHorizontalScroll YES _currentChild touchesCancelled event touchesForView self withEvent event if _isHorizontalScroll..

iMessage Style Receding Keyboard in an iOS App

http://stackoverflow.com/questions/7780753/imessage-style-receding-keyboard-in-an-ios-app

point touch locationInView self.view if keyboardSuperView.superview updateY keyboardSuperView.frame.origin.y if point.y keyboardSuperFrame.origin.y return if point.y updateY point.y updateY updateY point.y if keyboardSuperView.frame.origin.y.. keyboardSuperView.superview updateY keyboardSuperView.frame.origin.y if point.y keyboardSuperFrame.origin.y return if point.y updateY point.y updateY updateY point.y if keyboardSuperView.frame.origin.y updateY keyboardSuperView.frame CGRectMake keyboardSuperFrame.origin.x.. updateY keyboardSuperView.frame.origin.y if point.y keyboardSuperFrame.origin.y return if point.y updateY point.y updateY updateY point.y if keyboardSuperView.frame.origin.y updateY keyboardSuperView.frame CGRectMake keyboardSuperFrame.origin.x..