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我是法國人,所以請原諒我的英文。所以我使用加速度計,但在我的代碼中,加速度計用於視圖而不是圖像。我想要做的是將這個加速度計用於圖像而不是視圖。我怎樣才能做到這一點?下面是代碼:Xcode iPhone加速計圖片
#define CONST_fps 100.
#define CONST_map_shift 0.01
#define kFilteringFactor 0.1
UIAccelerationValue rollingX, rollingY, rollingZ;
@implementation MapViewRotationViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// accelerometer settings
[[UIAccelerometer sharedAccelerometer] setDelegate:self];
[[UIAccelerometer sharedAccelerometer] setUpdateInterval:(1.0/CONST_fps)];
}
- (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration
{
rollingX = (acceleration.x * kFilteringFactor) + (rollingX * (1.0 - kFilteringFactor));
rollingY = (acceleration.y * kFilteringFactor) + (rollingY * (1.0 - kFilteringFactor));
rollingZ = (acceleration.z * kFilteringFactor) + (rollingZ * (1.0 - kFilteringFactor));
float accelX = acceleration.x - rollingX;
float accelY = acceleration.y - rollingY;
float accelZ = acceleration.z - rollingZ;
static CGFloat ZZ = 0.;
CGFloat z = (atan2(rollingX, rollingY) + M_PI);
if (fabsf(ZZ - z) > CONST_map_shift)
{
viewToRotate.layer.transform = CATransform3DMakeRotation(ZZ=z, 0., 0., 1.);
}
}
@end
我不明白你在這裏問什麼。如果您可以使用上面的代碼旋轉視圖,爲什麼不能將該視圖變成UIImageView? – 2011-04-18 17:45:22