public void MeasureProperties(Vector3d dir, double height, out double pressure, out double density, out double temperature, out double c)
{
double x = Math.Min(Math.Max((height - Planet.Radius) / (Radius - Planet.Radius), 0), 1.5); // height as [0, 1.5]
double exp = Math.Exp(-4.0 * x);
pressure = SurfacePressure * exp;
density = SurfaceDensity * exp;
double temp = Planet.GetTemperature(dir);
temperature = temp * (-10 * (x - .0714) * (x - .4714) * (x - .6857) + .7692);
c = 331.3 + (.6 * temperature);
}
public void DrawHUD(Renderer renderer)
{
// time warp rect
renderer.D2DContext.FillRectangle(
new RawRectangleF(0, 0, 100, 40),
renderer.Brushes["White"]);
// time warp
renderer.D2DContext.DrawText("x" + TimeWarp.ToString("N0"), renderer.SegoeUI24,
new RawRectangleF(10, 0, 100, 40),
renderer.Brushes["Black"]);
// center rect
float xmid = renderer.ResolutionX * .5f;
renderer.D2DContext.FillRectangle(
new RawRectangleF(xmid - 150, 0, xmid + 150, 50),
renderer.Brushes["White"]);
renderer.SegoeUI24.TextAlignment = SharpDX.DirectWrite.TextAlignment.Leading;
renderer.SegoeUI14.TextAlignment = SharpDX.DirectWrite.TextAlignment.Leading;
// get nearest body/star
CelestialBody cb = StarSystem.ActiveSystem.GetCurrentSOI(player.Position);
Vector3d dir = cb.Position - player.Position;
double h = dir.Length();
dir /= h;
if (h > cb.SOI)
{
cb = StarSystem.ActiveSystem.GetStar();
}
Vector3d relative = cb.Velocity;
string vlbl = "Orbit";
double r = cb.Radius;
double radarAltitude = h - cb.GetHeight(dir);
if (radarAltitude < 10000)
{
vlbl = "Surface";
relative = cb.VelocityOnPoint(player.Position - cb.Position) + cb.Velocity;
}
if (cb is Planet)
{
Planet p = cb as Planet;
r = p.Radius + p.OceanHeight * p.TerrainHeight;
#region surface info
double temp = p.GetTemperature(dir);
double humid = p.GetHumidity(dir) * 100;
renderer.D2DContext.FillRectangle(
new RawRectangleF(xmid + 155, 0, xmid + 260, 80),
renderer.Brushes["White"]);
renderer.D2DContext.DrawText("Surface: ", renderer.SegoeUI14,
new RawRectangleF(xmid + 155, 3, xmid + 240, 10),
renderer.Brushes["Black"]);
renderer.D2DContext.DrawText(temp.ToString("F1") + "°C", renderer.SegoeUI14,
new RawRectangleF(xmid + 165, 15, xmid + 240, 30),
renderer.Brushes["Black"]);
renderer.D2DContext.DrawText(humid.ToString("F1") + "%", renderer.SegoeUI14,
new RawRectangleF(xmid + 165, 30, xmid + 240, 45),
renderer.Brushes["Black"]);
#endregion
#region atmosphere info
Atmosphere a = p.Atmosphere;
if (a != null && h < a.Radius * 1.5)
{
double atemp;
double pressure;
double density;
double c;
a.MeasureProperties(dir, h, out pressure, out density, out atemp, out c);
if (pressure > .1)
{
renderer.D2DContext.FillRectangle(
new RawRectangleF(xmid - 260, 0, xmid - 155, 80),
renderer.Brushes["White"]);
renderer.D2DContext.DrawText("Atmosphere: ", renderer.SegoeUI14,
new RawRectangleF(xmid - 250, 3, xmid - 155, 10),
renderer.Brushes["Black"]);
renderer.D2DContext.DrawText(atemp.ToString("F1") + "°C", renderer.SegoeUI14,
new RawRectangleF(xmid - 240, 15, xmid - 155, 30),
renderer.Brushes["Black"]);
renderer.D2DContext.DrawText(pressure.ToString("F1") + " kPa", renderer.SegoeUI14,
new RawRectangleF(xmid - 240, 30, xmid - 155, 45),
renderer.Brushes["Black"]);
renderer.D2DContext.DrawText(density.ToString("F1") + " kg/m^3", renderer.SegoeUI14,
new RawRectangleF(xmid - 240, 45, xmid - 155, 60),
renderer.Brushes["Black"]);
renderer.D2DContext.DrawText("Mach " + (player.Velocity.Length() / c).ToString("F2"), renderer.SegoeUI14,
new RawRectangleF(xmid - 240, 60, xmid - 155, 75),
renderer.Brushes["Black"]);
}
}
#endregion
}
// altitude
renderer.D2DContext.DrawText(Physics.FormatDistance(h - r), renderer.SegoeUI24,
new RawRectangleF(xmid, 0, xmid + 150, 40),
renderer.Brushes["Black"]);
// body label
renderer.D2DContext.DrawText(cb.Name, renderer.SegoeUI14,
new RawRectangleF(xmid, 30, xmid + 150, 50),
renderer.Brushes["Black"]);
Orbit o = new Orbit(player.Position - cb.Position, player.Velocity - cb.Velocity, cb);
renderer.SegoeUI14.ParagraphAlignment = SharpDX.DirectWrite.ParagraphAlignment.Far;
renderer.SegoeUI14.TextAlignment = SharpDX.DirectWrite.TextAlignment.Leading;
renderer.D2DContext.DrawText(o.ToString(), renderer.SegoeUI14,
new RawRectangleF(renderer.ResolutionX * .5f, renderer.ResolutionY, renderer.ResolutionX * .5f, renderer.ResolutionY),
renderer.Brushes["White"]);
// TODO: fix keplerian orbits
//List<Vector3d> pts = new List<Vector3d>();
//Vector3d op, ov;
//for (double t = 0; t < o.T; t += o.T * .05) {
// o.ToCartesian(cb, t, out op, out ov);
// pts.Add(cb.Position + op);
//}
//o.ToCartesian(cb, o.T, out op, out ov);
//pts.Add(cb.Position + op);
//Debug.DrawLine(Color.CornflowerBlue, pts.ToArray());
//
//foreach (Vector3d p in pts) {
// Vector3d pos;
// double scale;
// renderer.Camera.GetScaledSpace(p + cb.Position, out pos, out scale);
// Debug.DrawBox(Color.Green, new OrientedBoundingBox(pos - (Vector3d)Vector3.One * 10000 * scale, pos + (Vector3d)Vector3.One * 10000 * scale));
//}
// velocity
renderer.D2DContext.DrawText(Physics.FormatSpeed((player.Velocity - relative).Length()), renderer.SegoeUI24,
new RawRectangleF(xmid - 130, 0, xmid, 40),
renderer.Brushes["Black"]);
renderer.D2DContext.DrawText(vlbl, renderer.SegoeUI14,
new RawRectangleF(xmid - 130, 35, xmid, 50),
renderer.Brushes["Black"]);
}