public static ArraySimulationStepInput FromJson(JsonSpec spec, Mesh mesh, Bitmap texture)
{
ArraySimulationStepInput input = new ArraySimulationStepInput();
input.Heading = DegToRad(spec.Environment.HeadingDeg);
input.IndirectIrradiance = spec.Environment.IndirectIrradianceWM2;
input.Irradiance = spec.Environment.IrradianceWM2;
input.Latitude = spec.Environment.LatitudeDeg;
input.Longitude = spec.Environment.LongitudeDeg;
input.Temperature = spec.Environment.TemperatureC;
input.Tilt = DegToRad(spec.Environment.TiltDeg);
input.TimezoneOffsetHours = spec.Environment.TimezoneOffsetHours;
input.Utc = spec.Environment.Utc;
input.Array = new ArraySpec();
input.Array.BypassDiodeSpec.VoltageDrop = spec.Array.BypassDiode.VoltageDrop;
input.Array.CellSpec.Area = spec.Array.Cell.AreaM2;
input.Array.CellSpec.DIscDT = spec.Array.Cell.DIscDT;
input.Array.CellSpec.DVocDT = spec.Array.Cell.DVocDT;
input.Array.CellSpec.IscStc = spec.Array.Cell.IscStc;
input.Array.CellSpec.NIdeal = spec.Array.Cell.NIdeal;
input.Array.CellSpec.SeriesR = spec.Array.Cell.SeriesR;
input.Array.CellSpec.VocStc = spec.Array.Cell.VocStc;
input.Array.EncapsulationLoss = spec.Array.EncapsulationLoss;
input.Array.LayoutBounds = FromJson(spec.Array.LayoutBounds);
input.Array.Mesh = mesh;
input.Array.LayoutTexture = texture;
input.Array.ReadStringsFromColors();
return input;
}
//TODO: move to a utility class
public static Vector3 GetSunDir(ArraySimulationStepInput simInput)
{
// update the astronomy model
var utc_time = simInput.Utc;
var sidereal = Astro.sidereal_time(
utc_time,
simInput.Longitude);
var solarAzimuth = Astro.solar_azimuth(
(int)sidereal.TimeOfDay.TotalSeconds,
sidereal.DayOfYear,
simInput.Latitude);
var solarElevation = Astro.solar_elevation(
(int)sidereal.TimeOfDay.TotalSeconds,
sidereal.DayOfYear,
simInput.Latitude);
// correct for the car's heading and tilt
var phi = solarAzimuth - simInput.Heading;
var x = Math.Cos(solarElevation) * Math.Cos(phi); // phi 0 = forward = +X
var y = Math.Cos(solarElevation) * Math.Sin(phi); // phi 90deg = left = +Y
var z = Math.Sin(solarElevation); // up = +Z
z = Math.Cos(simInput.Tilt) * z + Math.Sin(simInput.Tilt) * y; // +tilt = tilt right
y = Math.Cos(simInput.Tilt) * y - Math.Sin(simInput.Tilt) * z;
//recalculate the shadows
return new Vector3((float)x, (float)z, (float)y);
}
public static JsonSpec ToJson(ArraySimulationStepInput input, string layoutFile, string meshFile, string relativeDir)
{
return new JsonSpec() {
Array = ToJson(input.Array, layoutFile, meshFile, relativeDir),
Environment = new EnvironmentJsonSpec() {
HeadingDeg = RadToDeg(input.Heading),
IndirectIrradianceWM2 = input.IndirectIrradiance,
IrradianceWM2 = input.Irradiance,
LatitudeDeg = input.Latitude,
LongitudeDeg = input.Longitude,
TemperatureC = input.Temperature,
TiltDeg = RadToDeg(input.Tilt),
TimezoneOffsetHours = input.TimezoneOffsetHours,
Utc = input.Utc
}
};
}
private void openParametersToolStripMenuItem_Click(object sender, EventArgs args)
{
if (openFileDialogParameters.ShowDialog() != System.Windows.Forms.DialogResult.OK) {
return;
}
try {
string filename = openFileDialogParameters.FileName;
string dir = Path.GetDirectoryName(filename);
JsonSpec spec = JsonSpecConverter.Read(filename);
string meshFname = dir + "/" + spec.Array.MeshFilename;
Mesh mesh = LoadMesh(meshFname);
Bitmap texture = LoadTexture(dir + "/" + spec.Array.LayoutFilename);
simInput = JsonSpecConverter.FromJson(spec, mesh, texture);
SetModel(simInput.Array.Mesh);
meshFilename = meshFname;
Console.WriteLine("Read spec " + spec);
} catch (Exception e) {
MessageBox.Show(e.Message, "Error loading model", MessageBoxButtons.OK);
}
CalculateSimStepGui();
InitInputView();
InitOutputView();
}
/// <summary>
/// (TODO) Calculates an array simulation
/// for a single array, single set of parameters, single moment in time.
///
/// Returns array output in watts, along with some other data.
/// </summary>
public ArraySimulationStepOutput Simulate(ArraySimulationStepInput simInput)
{
// validate that we're gtg
if (simInput == null) throw new InvalidOperationException("No input specified.");
Vector3 sunDir = GetSunDir(simInput);
return Simulate(simInput.Array, sunDir, simInput.Irradiance, simInput.IndirectIrradiance,
simInput.EncapuslationLoss, simInput.Temperature);
}
public CellParamsForm(ArraySimulationStepInput input)
{
this.input = input;
InitializeComponent();
ResetTextBoxes();
}
