+ __idle = NO;
+
+ [self setWindowVisibility:ITWindowVanishingState];
+ [self performVanishFromProgress:1.0 effectTime:_effectTime];
+}
+
+- (void)performVanishFromProgress:(float)progress effectTime:(float)time
+{
+ [_window setEffectProgress:progress];
+ _effectSpeed = (1.0 / (EFFECT_FPS * time));
+ if ( progress == 1.0 ) {
+ [self setPivot:0.0];
+ [_window setAlphaValue:1.0];
+ }
+
+ [_window orderFront:self];
+ _effectTimer = [NSTimer scheduledTimerWithTimeInterval:(1.0 / EFFECT_FPS)
+ target:self
+ selector:@selector(vanishStep)
+ userInfo:nil
+ repeats:YES];
+}
+
+- (void)vanishStep
+{
+ float interPivot = 1.0;
+ [_window setEffectProgress:([_window effectProgress] - _effectSpeed)];
+ [_window setEffectProgress:( ([_window effectProgress] > 0.0) ? [_window effectProgress] : 0.0)];
+ interPivot = (( sin(([_window effectProgress] * pi) - (pi / 2)) + 1 ) / 2);
+ [self setPivot:((interPivot * 45) + 315)];
+ [_window setAlphaValue:interPivot];
+
+ if ( [_window effectProgress] <= 0.0 ) {
+ [self vanishFinish];
+ }
+}
+
+- (void)vanishFinish
+{
+ [_effectTimer invalidate];
+ _effectTimer = nil;
+ [_window orderOut:self];
+ [_window setAlphaValue:1.0];
+ [self setPivot:0.0];
+ [self setWindowVisibility:ITWindowHiddenState];
+
+ __idle = YES;
+
+ if ( __shouldReleaseWhenIdle ) {
+ [self release];
+ }
+}
+
+- (void)cancelVanish
+{
+ [self setWindowVisibility:ITWindowAppearingState];
+
+ [_effectTimer invalidate];
+ _effectTimer = nil;
+
+ [self performAppearFromProgress:[_window effectProgress] effectTime:(_effectTime / 3.5)];
+}
+
+
+/*************************************************************************/
+#pragma mark -
+#pragma mark PRIVATE METHOD IMPLEMENTATIONS
+/*************************************************************************/
+
+- (void)setPivot:(float)angle
+{
+ float degAngle = (angle * (pi / 180));
+
+ CGAffineTransform transform = CGAffineTransformMakeRotation(degAngle);
+
+ // Set pivot rotation point
+ transform.tx = -32.0;
+ transform.ty = [_window frame].size.height + 32.0;
+
+ CGSSetWindowTransform([NSApp contextID],
+ (CGSWindowID)[_window windowNumber],
+ CGAffineTransformTranslate(transform,
+ (([_window frame].origin.x - 32.0) * -1),
+ (([[_window screen] frame].size.height - ([_window frame].origin.y) + 32.0) * -1) ));