public static void SimulateProjectileLaunch(Environment environment, Projectile launchSettings,
string outputBitmapFilePath)
{
System.Console.WriteLine($@"Simulating projectile launch in environment.
Gravity: {environment.Gravity.X} {environment.Gravity.Y} {environment.Gravity.Z}.
Wind: {environment.Wind.X} {environment.Wind.Y} {environment.Wind.Z}."
);
using var canvas = new System.Drawing.Bitmap(50, 50);
var projectileCalculator = new ProjectileCalculator(environment, launchSettings);
while (!projectileCalculator.HasLanded)
{
OutputProjectileStatus(projectileCalculator);
DrawProjectilePath(projectileCalculator, canvas);
projectileCalculator.Tick();
}
OutputProjectileStatus(projectileCalculator);
DrawProjectilePath(projectileCalculator, canvas);
projectileCalculator.Tick();
// NOTE: 0,0 is top-left of canvas (standard computer image processing), but is
// bottom-left in the real world! Book suggests subtracting y from canvas height.
// Instead, let's leave it and then just flip the image.
canvas.RotateFlip(System.Drawing.RotateFlipType.Rotate180FlipX);
canvas.Save(outputBitmapFilePath);
}
private static void OutputProjectileStatus(ProjectileCalculator currentState)
{
System.Console.WriteLine($@"Increment state details.
Increment: {currentState.TickCount}.
Landed: {currentState.HasLanded}.
Position: {currentState.CurrentPosition.X} {currentState.CurrentPosition.Y} {currentState.CurrentPosition.Z}.
Velocity: {currentState.CurrentVelocity.X} {currentState.CurrentVelocity.Y} {currentState.CurrentVelocity.Z}."
);
}
private static void DrawProjectilePath(ProjectileCalculator currentState, System.Drawing.Bitmap canvas)
{
var roundX = Math.Round(currentState.CurrentPosition.X, 0);
var roundY = Math.Round(currentState.CurrentPosition.Y, 0);
// UPDATE!! TODO: The "WPF way" is insanely difficult. Basically it's not designed for direct pixel manipulation.
// So I'm now giving serious consideration to just converting from "WPF color" to System.Drawing.Color and using
// System.Drawing.Bitmap for pixel manipulation.
var wpfColor = Color.FromScRgb(1.0F, 0.0F, 0.0F, 1.0F);
canvas.SetPixel((int)roundX, (int)roundY, wpfColor.Simplify());
}
