/// <summary>
/// Add the specified number of droidflakes.
/// </summary>
public void AddFlakes(int quantity)
{
for (int i = 0; i < quantity; ++i)
{
flakes.Add(Flake.CreateFlake(Width, droid));
}
NumFlakes = numFlakes + quantity;
}
/// <summary>
/// Creates a new droidflake in the given xRange and with the given bitmap. Parameters of
/// location, size, rotation, and speed are randomly determined.
/// </summary>
public static Flake CreateFlake(float xRange, Bitmap originalBitmap)
{
var rnd = new Random();
var flake = new Flake();
// Size each flake with a width between 5 and 55 and a proportional height
flake.Width = rnd.Next(5, 55);
var hwRatio = originalBitmap.Height / originalBitmap.Width;
flake.Height = flake.Width * hwRatio;
// Position the flake horizontally between the left and right of the range
flake.X = rnd.Next((int)(xRange - flake.Width));
// Position the flake vertically slightly off the top of the display
flake.Y = -rnd.Next(flake.Height, flake.Height * 2);
// Each flake travels at 50-200 pixels per second
flake.Speed = rnd.Next(50, 200);
// Flakes start at -90 to 90 degrees rotation, and rotate between -45 and 45
// degrees per second
flake.Rotation = rnd.Next(-90, 90);
flake.RotationSpeed = rnd.Next(-45, 45);
// Get the cached bitmap for this size if it exists, otherwise create and cache one
if (!bitmapMap.ContainsKey(flake.Width))
{
flake.Bitmap = Bitmap.CreateScaledBitmap(originalBitmap, flake.Width, flake.Height, true);
bitmapMap[flake.Width] = flake.Bitmap;
}
else
{
flake.Bitmap = bitmapMap[flake.Width];
}
return(flake);
}
/// <summary>
/// Creates a new droidflake in the given xRange and with the given bitmap. Parameters of
/// location, size, rotation, and speed are randomly determined.
/// </summary>
public static Flake CreateFlake(float xRange, Bitmap originalBitmap)
{
var rnd = new Random();
var flake = new Flake();
// Size each flake with a width between 5 and 55 and a proportional height
flake.Width = rnd.Next(5, 55);
var hwRatio = originalBitmap.Height / originalBitmap.Width;
flake.Height = flake.Width * hwRatio;
// Position the flake horizontally between the left and right of the range
flake.X = rnd.Next((int)(xRange - flake.Width));
// Position the flake vertically slightly off the top of the display
flake.Y = -rnd.Next(flake.Height, flake.Height * 2);
// Each flake travels at 50-200 pixels per second
flake.Speed = rnd.Next(50, 200);
// Flakes start at -90 to 90 degrees rotation, and rotate between -45 and 45
// degrees per second
flake.Rotation = rnd.Next(-90, 90);
flake.RotationSpeed = rnd.Next(-45, 45);
// Get the cached bitmap for this size if it exists, otherwise create and cache one
if (!bitmapMap.ContainsKey(flake.Width))
{
flake.Bitmap = Bitmap.CreateScaledBitmap(originalBitmap, flake.Width, flake.Height, true);
bitmapMap[flake.Width] = flake.Bitmap;
}
else
{
flake.Bitmap = bitmapMap[flake.Width];
}
return flake;
}
