internal static void DoStepping()
{
string path = Path.Combine(
Tools.GetBaseFolder(new Uri(Assembly.GetExecutingAssembly().CodeBase).AbsolutePath,
nameof(Femyou)), "FMU", "bin", "dist");
using IModel model = Model.Load($"{path}/BouncingBall.fmu");
Console.WriteLine("Loaded the model!");
using IInstance instance = model.CreateCoSimulationInstance("instance1", new ConsoleCallbacks());
Console.WriteLine("Created an instance of the model!");
IVariable velocity = model.Variables["v"];
instance.WriteReal(velocity, 10);
Console.WriteLine($"v = {instance.ReadReal(velocity)} at time: {instance.CurrentTime}");
instance.StartTime();
instance.AdvanceTime(1f);
Console.WriteLine($"v = {instance.ReadReal(velocity)} at time: {instance.CurrentTime}");
instance.AdvanceTime(1f);
Console.WriteLine($"v = {instance.ReadReal(velocity)} at time: {instance.CurrentTime}");
}
internal static void CreateGIF()
{
var info = new SKImageInfo(400, 400);
var r = 70;
var h = (double)(info.Height - r * 2);
var v = 0.0;
var hCoord = new SKPoint(0, 20);
var vCoord = new SKPoint(0, 40);
var paint = new SKPaint {
Color = SKColors.Red,
IsAntialias = true,
Style = SKPaintStyle.Fill,
TextSize = 16
};
using IModel model = Model.Load(Path.Combine(FmuFolder, "BouncingBall.fmu"));
using IInstance instance = Tools.CreateInstance(model, "demo");
IVariable altitude = model.Variables["h"];
IVariable velocity = model.Variables["v"];
instance.WriteReal((altitude, h));
instance.WriteReal((velocity, v));
using var gif = new AnimatedGifCreator("BouncingBall.gif");
instance.StartTime(0.0);
while (h > 0 || Math.Abs(v) > 0)
{
IEnumerable <double> variables = instance.ReadReal(altitude, velocity);
h = variables.First();
v = variables.Last();
AddFrame(gif, info, canvas => {
canvas.Clear(SKColors.WhiteSmoke);
canvas.DrawText($"h = {h:F2} m", hCoord, paint);
canvas.DrawText($"v = {v:F2} m/s", vCoord, paint);
canvas.DrawCircle(info.Width / 2, info.Height - (int)h - r, r, paint);
});
instance.AdvanceTime(0.1);
}
}