## mark a section (Learn more)

#import "SampleApp.h" #include <time.h> #include <math.h> @implementation SampleApp - (void)acceleratedInX:(float)xx Y:(float)yy Z:(float)zz { // Create Status feedback string NSString *xstring = [NSString stringWithFormat: @"X (roll, %4.1f%%): %f\nY (pitch %4.1f%%): %f\nZ (%4.1f%%) : %f", 100.0 - (xx + 0.5) * 100.0, xx, 100.0 - (yy + 0.5) * 100.0, yy, 100.0 - (zz + 0.5) * 100.0, zz]; [textView setText:xstring]; // Revert Arrow and then rotate to new coords [xarrow setTransform:CGAffineTransformIdentity]; float angle = atan2(yy, xx); angle *= 180.0/3.14159; [xarrow setRotationBy:angle]; } - (void) applicationDidFinishLaunching: (id) unused { struct CGRect rect = [UIHardware fullScreenApplicationContentRect]; rect.origin.x = rect.origin.y = 0.0f; window = [[UIWindow alloc] initWithContentRect: rect]; mainView = [[UIView alloc] initWithFrame: rect]; textView = [[UITextView alloc] initWithFrame: CGRectMake(0.0, 0.0, 320.0, 480.0)]; [textView setEditable:NO]; [textView setTextSize:24]; [mainView addSubview: textView]; xarrow = [[UIImageView alloc] initWithFrame: CGRectMake(50.0, 320.0, 200.0, 50.0)]; UIImage *img = [[UIImage imageAtPath: [[NSBundle mainBundle] pathForResource:@"arrow" ofType:@"png" inDirectory:@"/"]] retain]; [xarrow setImage:img]; [textView addSubview:xarrow]; [window orderFront: self]; [window makeKey: self]; [window _setHidden: NO]; [window setContentView: mainView]; } @end

This paste will be private.