- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
	CGPoint position = CGPointZero;
	for(UITouch *touch in touches) {
		position = [touch locationInView:self];

		[self rotateWithX:position.x andY:position.y];
	}

}
- (void)rotateWithX:(float)positionX andY:(float)positionY {

	AB = sqrtf(powf((Slider.center.x/2 - positionX), 2) + powf((Slider.center.y - (positionY )),2));


	BO = sqrtf(powf((positionX - Slider.center.x), 2) + powf((positionY - Slider.center.y),2));


	AO = sqrtf(powf((Slider.center.x/2 - Slider.center.x), 2));

	slidAngle = acosf(-(powf(AB,2) - powf(AO,2) - powf(BO, 2))/ (2*AO*BO));

	slidAngle -= 0.35;


	pip = (slidAngle* 57.3)*1.42;

	mainScreen.RPMNumber = RPMvalue;
	RPMLabel.text = [NSString stringWithFormat:@"%d",RPMvalu];

	CGAffineTransform transform=CGAffineTransformMakeRotation(slidAngle);
	Slider.transform = transform;
}