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Local Time Calculations

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Aada 2026-03-07 10:29:28 +02:00
parent e379d1593a
commit 8d0d0701ba
2 changed files with 96 additions and 5 deletions
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58
src/Main.cs
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@ -38,6 +38,7 @@ public partial class Main : Control
UpdateStats();
Projector.GatherPoints(_planetHelper, int.Parse(GetNode<LineEdit>("%Resolution").Text));
AxialTiltChanged(GetNode<LineEdit>("%AxialTilt").Text);
UpdateTime();
}
Vector3 _pointerPosition = Vector3.Zero;
@ -112,6 +113,7 @@ public partial class Main : Control
vertexPos *= _meshInstance.Transform.Basis.Inverse().Orthonormalized();
_pointerPosition = (Vector3)vertexPos + (vertexPos * (_vertex.Height + 0.01f) * 0.03f); // vertexPos * 1.01f;
GetNode<Node3D>("%Pointer").GlobalPosition = _pointerPosition;
UpdateTime();
}
}
@ -128,16 +130,65 @@ public partial class Main : Control
_planetHelper.Process();
if (_sunRotating)
{
_sunRotation = (double)(GetNode<HSlider>("%SunAngle").Value / 365.0);
GetNode<Node3D>("%Sun").Rotation -= GetNode<Node3D>("%Sun").Rotation;
GetNode<Node3D>("%Sun").Rotation += new Vector3(0, (float)Mathf.DegToRad(GetNode<HSlider>("%SunAngle").Value), 0);
GetNode<Node3D>("%Sun").Rotation += new Vector3(0, Mathf.DegToRad((float)_sunRotation * 360f), 0);
UpdateTime();
}
if (_planetRotating)
{
_planetRotation = (double)(GetNode<HSlider>("%PlanetAngle").Value / 24.0);
_meshInstance.Rotation = Vector3.Zero;
_meshInstance.RotateY((float)Mathf.DegToRad(GetNode<HSlider>("%PlanetAngle").Value));
_meshInstance.RotateY((float)Mathf.DegToRad(_planetRotation * 360.0));
_meshInstance.RotateZ(Mathf.DegToRad(_axialTilt));
UpdateTime();
}
}
public void UpdateTime()
{
double hours = GetLocalTime(GetNode<Node3D>("%Pointer").GlobalPosition, GetNode<Node3D>("%Sun").GlobalTransform.Basis.Z,
_meshInstance);
GetNode<Label>("%LocalTime").Text = DaysToTime(_sunRotation * 365.0, hours);
GetNode<Label>("%Date").Text = DaysToDate(_sunRotation * 365.0, _planetRotation*24.0);
}
public static double GetLocalTime(Vector3 surfacePoint, Vector3 sunPos, Node3D planet)
{
Vector3 center = planet.GlobalTransform.Origin;
Vector3 axis = -planet.GlobalTransform.Basis.Y.Normalized();
Vector3 surfaceDir = (surfacePoint - center).Normalized();
Vector3 sunDir = (sunPos - center).Normalized();
surfaceDir = (surfaceDir - axis * surfaceDir.Dot(axis)).Normalized();
sunDir = (sunDir - axis * sunDir.Dot(axis)).Normalized();
double angle = Mathf.Atan2(
axis.Dot(surfaceDir.Cross(sunDir)),
surfaceDir.Dot(sunDir)
);
double hours = Mathf.PosMod(angle / Mathf.Tau * 24.0 + 12.0, 24.0);
return hours;
}
public string DaysToDate(double days, double hours)
{
DateTime dt = new DateTime(1, 1, 1);
dt = dt.AddDays(days);
dt = dt.AddHours(hours);
return dt.ToString("'y'yyyy/'m'MM/'d'dd - 'h'HH':''m'mm':''s'ss");
}
public string DaysToTime(double days, double hours)
{
DateTime dt = new DateTime(1, 1, 1);
dt = dt.AddDays(days);
dt = dt.AddHours(hours);
return dt.ToString("'h'HH':''m'mm':''s'ss");
}
public void UpdateStats()
{
if (_vertex != null)
@ -239,6 +290,7 @@ public partial class Main : Control
}
private bool _sunRotating = false;
private double _sunRotation = 0.0;
private float _axialTilt = 0f;
public void SunAngleStart()
{
@ -250,7 +302,7 @@ public partial class Main : Control
_sunRotating = false;
}
private bool _planetRotating = false;
private float _planetRotation = 0f;
private double _planetRotation = 0.0;
public void PlanetAngleStart()
{
_planetRotating = true;