/*

     File: AppController.m

 Abstract: Animate a group of rectangles using replicators

  Version: 1.0

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#import "AppController.h"

#define Z_TIME_DELAY (0.15) 

#define X_TIME_DELAY (Z_TIME_DELAY * 5)

#define Y_TIME_DELAY (X_TIME_DELAY * 6)

@implementation AppController

-(void)awakeFromNib {

    //Create the root layer

    rootLayer = [CALayer layer];

    //Set the root layer's attributes

    CGColorRef color = CGColorCreateGenericRGB(0.0, 0.0, 0.0, 1);

    rootLayer.backgroundColor = color;

    CGColorRelease(color);

    //Create a 3D perspective transform

    CATransform3D t = CATransform3DIdentity;

    t.m34 = 1.0 / -900.0;

    //Rotate and reposition the camera

    t = CATransform3DTranslate(t, 0, 40, -210);

    t = CATransform3DRotate(t, 0.3, 1.0, -1.0, 0);

    rootLayer.sublayerTransform = t;

    //Create the replicator layer

    replicatorX = [CAReplicatorLayer layer];

    //Set the replicator's attributes

    replicatorX.frame = CGRectMake(0, 0, 400, 300);

    replicatorX.position = CGPointMake(320, 240);

    replicatorX.instanceDelay = X_TIME_DELAY;

    replicatorX.preservesDepth = YES;

    replicatorX.zPosition = 200;

    replicatorX.anchorPointZ = -160;

    //Create the second level of replicators

    replicatorY = [CAReplicatorLayer layer];

    //Set the second replicator's attributes

    replicatorY.instanceDelay = Y_TIME_DELAY;

    replicatorY.preservesDepth = YES;

    //Create the third level of replicators

    replicatorZ = [CAReplicatorLayer layer];

    //Set the third replicator's attributes

    color = CGColorCreateGenericRGB(0.8, 0.8, 0.8, 1);

    replicatorZ.instanceColor = color;

    CGColorRelease(color);

    replicatorZ.instanceDelay = Z_TIME_DELAY;

    replicatorZ.preservesDepth = YES;

    //Create a sublayer

    subLayer = [CALayer layer];

    subLayer.frame = CGRectMake(0, 0, 40, 30);

    subLayer.position = CGPointMake(90, 265);

    color = CGColorCreateGenericRGB(0.3, 0.3, 0.3, 1);

    subLayer.borderColor = color;

    CGColorRelease(color);

    subLayer.borderWidth = 2.0;

    color = CGColorCreateGenericRGB(1, 1, 1, 1);

    subLayer.backgroundColor = color;

    CGColorRelease(color);

    //Set up the sublayer/replicator hierarchy

    [replicatorZ addSublayer:subLayer];

    [replicatorY addSublayer:replicatorZ];

    [replicatorX addSublayer:replicatorY];

    //Add the replicator to the root layer

    [rootLayer addSublayer:replicatorX];

    //Set the view's layer to the base layer

    [view setLayer:rootLayer];

    [view setWantsLayer:YES];

    //Force the view to update

    [view setNeedsDisplay:YES];

    //Transform matrix to be used for camera animation

    t = CATransform3DMakeRotation(1, 0, 1, 0);

    //Animate the camera panning left and right continuously

    CABasicAnimation *animation = [CABasicAnimation animation];

    animation.fromValue = [NSValue valueWithCATransform3D: CATransform3DIdentity];

    animation.toValue = [NSValue valueWithCATransform3D: t];

    animation.duration = 5;

    animation.removedOnCompletion = NO;

    animation.autoreverses = YES;

    animation.repeatCount = 1e100f;

    animation.fillMode = kCAFillModeForwards;

    [replicatorX addAnimation:animation forKey:@"transform"];

    [NSTimer scheduledTimerWithTimeInterval:1.5 target:self selector:@selector(addOffests:) userInfo:nil repeats:NO];

    [NSTimer scheduledTimerWithTimeInterval:9.5 target:self selector:@selector(animate:) userInfo:nil repeats:NO];

}

//Animates the layers by having them rotate and fly past the camera.

-(void)animate:(id)sender {

    //Dont implicitly animate the delay change 

    [CATransaction setDisableActions:YES];

    //Reset the replicator delays to their origonal values

    replicatorX.instanceDelay = X_TIME_DELAY;

    replicatorY.instanceDelay = Y_TIME_DELAY;

    replicatorZ.instanceDelay = Z_TIME_DELAY;

    //Re-enable the implicit animations

    [CATransaction setDisableActions:NO];

    //Create the transform matrix for the animation

    //Move forward 1000 units along z-axis

    CATransform3D t = CATransform3DMakeTranslation( 0, 0, 1000);

    //Rotate Pi radians about the axis (0.7, 0.3, 0.0)

    t = CATransform3DRotate(t, M_PI, 0.7, 0.3, 0.0);

    //Scale the X and Y dimmensions by a factor of 3

    t = CATransform3DScale(t, 3, 3, 1);

    //Transform Animation

    CABasicAnimation *animation = [CABasicAnimation animation];

    animation.fromValue = [NSValue valueWithCATransform3D: CATransform3DIdentity];

    animation.toValue = [NSValue valueWithCATransform3D: t];

    animation.duration = 1.0;

    animation.removedOnCompletion = NO;

    animation.fillMode = kCAFillModeBoth;

    [subLayer addAnimation:animation forKey:@"transform"];

    //Opacity Animation

    animation = [CABasicAnimation animation];

    animation.fromValue = [NSNumber numberWithFloat:1.0];

    animation.toValue = [NSNumber numberWithFloat:0.0];

    animation.duration = 1.0;

    animation.removedOnCompletion = NO;

    animation.fillMode = kCAFillModeBoth;

    [subLayer addAnimation:animation forKey:@"opacity"];

    //Start a timer to call 'reset:' once the animation has completed

    [NSTimer scheduledTimerWithTimeInterval:(Y_TIME_DELAY * 5.0 + 0.5) target:self selector:@selector(reset:) userInfo:nil repeats:NO];

}

//Animate the layers back into the original cube formation

-(void)reset:(id)sender {

    //Create the transform matrix for the animation

    //Move forward 1000 units along z-axis

    CATransform3D t = CATransform3DMakeTranslation( 0, 0, 1000);

    //Rotate Pi radians about the axis (0.7, 0.3, 0.0)

    t = CATransform3DRotate(t, M_PI, 0.7, 0.3, 0.0);

    //Scale the X and Y dimmensions by a factor of 3

    t = CATransform3DScale(t, 3, 3, 1);

    //Dont implicitly animate the delay change 

    [CATransaction setDisableActions:YES];

    //Set the delays lower for a faster animation

    replicatorX.instanceDelay = 0.1;

    replicatorY.instanceDelay = 0.6;

    replicatorZ.instanceDelay = -Z_TIME_DELAY;

    //Re-enable the implicit animations

    [CATransaction setDisableActions:NO];

    //Transform Animation

    CABasicAnimation *animation = [CABasicAnimation animation];

    animation.fromValue = [NSValue valueWithCATransform3D: t];

    animation.toValue = [NSValue valueWithCATransform3D: CATransform3DIdentity];

    animation.duration = 1.0;

    animation.removedOnCompletion = NO;

    animation.fillMode = kCAFillModeBoth;

    [subLayer addAnimation:animation forKey:@"transform"];

    //Opacity Animation

    animation = [CABasicAnimation animation];

    animation.fromValue = [NSNumber numberWithFloat:0.0];

    animation.toValue = [NSNumber numberWithFloat:1.0];

    animation.duration = 1.0;

    animation.removedOnCompletion = NO;

    animation.fillMode = kCAFillModeBoth;

    [subLayer addAnimation:animation forKey:@"opacity"];

    //Start a timer to call 'animate:' once the animation has completed

    [NSTimer scheduledTimerWithTimeInterval:(0.6 * 5.0 + 2.0) target:self selector:@selector(animate:) userInfo:nil repeats:NO];

}

//Activtes each replicator one by one using timers to control when each starts

// (Used for the intro sequnce where a single layer expands into the 3D cube)

-(void)addOffests:(id)sender {

    [NSTimer scheduledTimerWithTimeInterval:0 target:self selector:@selector(addZReplicator:) userInfo:nil repeats:NO];

    [NSTimer scheduledTimerWithTimeInterval:2.6 target:self selector:@selector(addYReplicator:) userInfo:nil repeats:NO];

    [NSTimer scheduledTimerWithTimeInterval:5.2 target:self selector:@selector(addXReplicator:) userInfo:nil repeats:NO];

}

//Activtes the X replicator by settign its instance count and instance transform

// (Used for the intro sequnce where a single layer expands into the 3D cube)

-(void)addXReplicator:(id)sender {

    [CATransaction setDisableActions:YES];

    replicatorX.instanceCount = 6;

    replicatorX.instanceRedOffset = -0.2;

    [CATransaction setDisableActions:NO];

    [CATransaction setAnimationDuration:2.5];

    replicatorX.instanceTransform = CATransform3DMakeTranslation(60, 0, 0);

}

//Activtes the Y replicator by settign its instance count and instance transform

// (Used for the intro sequnce where a single layer expands into the 3D cube)

-(void)addYReplicator:(id)sender {

    [CATransaction setDisableActions:YES];

    replicatorY.instanceCount = 5;

    replicatorY.instanceBlueOffset = -0.2;

    [CATransaction setDisableActions:NO];

    [CATransaction setAnimationDuration:2.5];

    replicatorY.instanceTransform = CATransform3DMakeTranslation(0, -50, 0);

}

//Activtes the Z replicator by settign its instance count and instance transform

// (Used for the intro sequnce where a single layer expands into the 3D cube)

-(void)addZReplicator:(id)sender {

    [CATransaction setDisableActions:YES];

    replicatorZ.instanceCount = 5;

    replicatorZ.instanceGreenOffset = -0.2;

    [CATransaction setDisableActions:NO];

    [CATransaction setAnimationDuration:2.5];

    replicatorZ.instanceTransform = CATransform3DMakeTranslation(0, 0, -80);

}

@end