public void AwakeFromNib()
{
//Create the root layer
this.rootLayer = CALayer.Layer;
//Set the root layer's attributes
this.rootLayer.Bounds = CGRect.CGRectMake (0, 0, 640, 480);
IntPtr color = CGColor.CreateGenericRGB (0.0, 0.0, 0.0, 1);
rootLayer.BackgroundColor = color;
CGColor.Release (color);
//Load the spark image for the particle
String fileName = NSBundle.MainBundle.PathForResourceOfType ("tspark", "png");
IntPtr dataProvider = CGDataProvider.CreateWithFilename (fileName);
IntPtr img = CGImage.CreateWithPNGDataProvider (dataProvider, IntPtr.Zero, false, CGColorRenderingIntent.kCGRenderingIntentDefault);
this.mortor = CAEmitterLayer.Layer.Retain<CAEmitterLayer>();
this.mortor.EmitterPosition = CGPoint.CGPointMake (320, 0);
this.mortor.RenderMode = CAEmitterLayer.kCAEmitterLayerAdditive;
//Invisible particle representing the rocket before the explosion
CAEmitterCell rocket = CAEmitterCell.EmitterCell.Retain<CAEmitterCell>();
rocket.EmissionLongitude = Math.PI / 2;
rocket.EmissionLatitude = 0;
rocket.Lifetime = 1.6f;
rocket.BirthRate = 1;
rocket.Velocity = 400;
rocket.VelocityRange = 100;
rocket.YAcceleration = -250;
rocket.EmissionRange = Math.PI / 4;
color = CGColor.CreateGenericRGB (0.5, 0.5, 0.5, 0.5);
rocket.Color = color;
CGColor.Release (color);
rocket.RedRange = 0.5f;
rocket.GreenRange = 0.5f;
rocket.BlueRange = 0.5f;
//Name the cell so that it can be animated later using keypath
rocket.Name = "rocket";
//Flare particles emitted from the rocket as it flys
CAEmitterCell flare = CAEmitterCell.EmitterCell;
flare.ContentsPointer = img;
flare.EmissionLongitude = (4 * Math.PI) / 2;
flare.Scale = 0.4;
flare.Velocity = 100;
flare.BirthRate = 45;
flare.Lifetime = 1.5f;
flare.YAcceleration = -350;
flare.EmissionRange = Math.PI / 7;
flare.AlphaSpeed = -0.7f;
flare.ScaleSpeed = -0.1;
flare.ScaleRange = 0.1;
flare.BeginTime = 0.01;
flare.Duration = 0.7;
//The particles that make up the explosion
CAEmitterCell firework = CAEmitterCell.EmitterCell;
firework.ContentsPointer = img;
firework.BirthRate = 9999;
firework.Scale = 0.6;
firework.Velocity = 130;
firework.Lifetime = 2;
firework.AlphaSpeed = -0.2f;
firework.YAcceleration = -80;
firework.BeginTime = 1.5;
firework.Duration = 0.1;
firework.EmissionRange = 2 * Math.PI;
firework.ScaleSpeed = -0.1;
firework.Spin = 2;
//Name the cell so that it can be animated later using keypath
firework.Name = "firework";
//preSpark is an invisible particle used to later emit the spark
CAEmitterCell preSpark = CAEmitterCell.EmitterCell;
preSpark.BirthRate = 80;
preSpark.Velocity = firework.Velocity * 0.70;
preSpark.Lifetime = 1.7f;
preSpark.YAcceleration = firework.YAcceleration * 0.85;
preSpark.BeginTime = firework.BeginTime - 0.2;
preSpark.EmissionRange = firework.EmissionRange;
preSpark.GreenSpeed = 100;
preSpark.BlueSpeed = 100;
preSpark.RedSpeed = 100;
//Name the cell so that it can be animated later using keypath
preSpark.Name = "preSpark";
//The 'sparkle' at the end of a firework
CAEmitterCell spark = CAEmitterCell.EmitterCell;
spark.ContentsPointer = img;
spark.Lifetime = 0.05f;
spark.YAcceleration = -250;
spark.BeginTime = 0.8;
spark.Scale = 0.4;
spark.BirthRate = 10;
preSpark.EmitterCells = NSArray.ArrayWithObject (spark);
rocket.EmitterCells = NSArray.ArrayWithObjects (flare, firework, preSpark, null);
mortor.EmitterCells = NSArray.ArrayWithObject (rocket);
this.rootLayer.AddSublayer (this.mortor);
//Set the view's layer to the base layer
theView.Layer = rootLayer;
theView.WantsLayer = true;
//Force the view to update
theView.NeedsDisplay = true;
}
public void AwakeFromNib()
{
//Create the root layer
rootLayer = CALayer.Layer;
//Set the root layer's background color to black
rootLayer.BackgroundColor = CGColor.GetConstantColor(CGColor.kCGColorBlack);
//Create the fire emitter layer
fireEmitter = CAEmitterLayer.Layer;
fireEmitter.EmitterPosition = new CGPoint(225, 50);
fireEmitter.EmitterMode = CAEmitterLayer.kCAEmitterLayerOutline;
fireEmitter.EmitterShape = CAEmitterLayer.kCAEmitterLayerLine;
fireEmitter.RenderMode = CAEmitterLayer.kCAEmitterLayerAdditive;
fireEmitter.EmitterSize = new CGSize(0, 0);
//Create the smoke emitter layer
smokeEmitter = CAEmitterLayer.Layer;
smokeEmitter.EmitterPosition = new CGPoint(225, 50);
smokeEmitter.EmitterMode = CAEmitterLayer.kCAEmitterLayerPoints;
//Create the fire emitter cell
CAEmitterCell fire = CAEmitterCell.EmitterCell;
fire.EmissionLongitude = (float) Math.PI;
fire.BirthRate = 0;
fire.Velocity = 80;
fire.VelocityRange = 30;
fire.EmissionRange = 1.1f;
fire.YAcceleration = 200;
fire.ScaleSpeed = 0.3f;
IntPtr color = CGColor.CreateGenericRGB(0.8f, 0.4f, 0.2f, 0.10f);
fire.Color = color;
CGColor.Release(color);
fire.ContentsPointer = CGImageNamed("fire.png");
//Name the cell so that it can be animated later using keypaths
fire.Name = "fire";
//Add the fire emitter cell to the fire emitter layer
fireEmitter.EmitterCells = NSArray.ArrayWithObject(fire);
//Create the smoke emitter cell
CAEmitterCell smoke = CAEmitterCell.EmitterCell;
smoke.BirthRate = 11;
smoke.EmissionLongitude = (float)(Math.PI / 2);
smoke.Lifetime = 0;
smoke.Velocity = 40;
smoke.VelocityRange = 20;
smoke.EmissionRange = (float)(Math.PI / 4);
smoke.Spin = 1;
smoke.SpinRange = 6;
smoke.YAcceleration = 160;
smoke.ContentsPointer = CGImageNamed("smoke.png");
smoke.Scale = 0.1f;
smoke.AlphaSpeed = -0.12f;
smoke.ScaleSpeed = 0.7f;
//Name the cell so that it can be animated later using keypaths
smoke.Name = "smoke";
//Add the smoke emitter cell to the smoke emitter layer
smokeEmitter.EmitterCells = NSArray.ArrayWithObject(smoke);
//Add the two emitter layers to the root layer
rootLayer.AddSublayer(smokeEmitter);
rootLayer.AddSublayer(fireEmitter);
//Set the view's layer to the base layer
view.Layer = rootLayer;
view.WantsLayer = true;
//Set the fire simulation to reflect the initial slider position
this.SlidersChanged(this);
//Force the view to update
view.NeedsDisplay = true;
}