protected EngineBase(int id, ISpaceCraft parent, DVector2 offset, EngineFlame flame)
{
_parent = parent;
_offsetLength = offset.Length();
_offsetRotation = offset.Angle() - Math.PI / 2.0;
_engineFlame = flame;
}
public LandingLeg(ISpaceCraft parent, DVector2 offset, bool isLeft)
{
_parent = parent;
_isLeft = isLeft;
_offsetLength = offset.Length();
_offsetRotation = _offsetRotation = offset.Angle() - Math.PI/2.0;
_texture = isLeft ? new Bitmap("Textures/landingLegLeft.png") : new Bitmap("Textures/landingLegRight.png");
}
protected StructureBase(DVector2 relativePosition, string texturePath, IMassiveBody parent)
{
_parent = parent;
_initialDistance = relativePosition.Length();
_rotationOffset = relativePosition.Angle();
_initialRotation = parent.Rotation;
_texture = new Bitmap(texturePath);
}
public ReEntryFlame(int maxParticles, double particleRate, DVector2 offset)
{
_random = new Random();
_particles = new Particle[maxParticles];
_availableParticles = new Queue<int>(maxParticles);
for (int i = 0; i < maxParticles; i++)
{
_particles[i] = new Particle();
_availableParticles.Enqueue(i);
}
_particleRate = particleRate;
_offsetAngle = offset.Angle();
_offsetLength = offset.Length();
}
public virtual void UpdateChildren(DVector2 position, DVector2 velocity)
{
Position = position - new DVector2(StageOffset.X*Math.Sin(Rotation) + StageOffset.Y*Math.Cos(Rotation),
-StageOffset.X*Math.Cos(Rotation) + StageOffset.Y*Math.Sin(Rotation));
Velocity.X = velocity.X;
Velocity.Y = velocity.Y;
MachNumber = velocity.Length() * 0.0029411764;
foreach (ISpaceCraft child in Children)
{
child.UpdateChildren(Position, Velocity);
}
}
// Finds the orbtial delta time step by assuming 200 points along the oribtal cirumference
private static double GetOrbitalDt(DVector2 positon, DVector2 velocity, out double terminationRadius)
{
double orbitalAltitude = positon.Length();
double approximateOrbitDiameter = orbitalAltitude * 2 * Math.PI;
// Terminate the trace if it comes within 1/100 of starting point
terminationRadius = approximateOrbitDiameter * 0.01;
double approximateOrbitPeriod = approximateOrbitDiameter / velocity.Length();
return approximateOrbitPeriod * 0.005;
}
public virtual void UpdateChildren(DVector2 position, DVector2 velocity)
{
var rotationOffset = new DVector2(Math.Cos(Pitch), Math.Sin(Pitch));
Position = position - new DVector2(StageOffset.X * rotationOffset.Y + StageOffset.Y * rotationOffset.X,
-StageOffset.X * rotationOffset.X + StageOffset.Y * rotationOffset.Y);
Velocity.X = velocity.X;
Velocity.Y = velocity.Y;
MachNumber = velocity.Length() * 0.0029411764;
foreach (ISpaceCraft child in Children)
{
child.UpdateChildren(Position, Velocity);
}
}