void CurvedSwirl(MyParticle flake)
{
int count = flake.GetCount();
if (count < spline.getListLength())
{
//transform of flake = this point
Vector3 positionAtI = spline.getPositionAtI(count);
Vector3[] coordinateFrame = frenet.frenetAt(count);
Vector3 T = coordinateFrame[0];
Vector3 N = coordinateFrame[1];
Vector3 B = coordinateFrame[2];
float omega = GetCurvedOmega(flake, T, N, B, positionAtI);
//we need the position it should be at, plus rotation
flake.transform.position = positionAtI;
flake.transform.rotation = Quaternion.LookRotation(T, N);
Vector3 flakeOriginalPosition = flake.getInitUnitPosition();
flake.transform.position = positionAtI + flakeOriginalPosition;
float factor = 1f;
Vector3 oldPosition = flake.transform.position;
flake.transform.RotateAround(positionAtI, T, omega * Time.time);
flake.IncCount();
}
}
float GetCurvedOmega(MyParticle flake, Vector3 T, Vector3 N, Vector3 B, Vector3 splinePosition)
{
float omega;
float distance = (float)flake.GetCount() / (float)spline.getListLength();
Vector3 center = splinePosition - distance * T;
// axis is the direction
Vector3 xvi = vortex.BaseToParticle(flake.transform.position, center);
float li = vortex.ProjectionLengthAtParticle(xvi);
Vector3 ri = vortex.OrthoVFromAxisToParticle(xvi, li);
float riMag = vortex.RadiusDistFromParticleToAxis(ri);
//if (vortex.InVortexCylinder(li, riMag))
//{
float fi = vortex.Frequency(riMag);
omega = vortex.GetOmega(fi);
// }else{
// omega = 0f;
// }
return(omega);
}
void Swirl(MyParticle flake)
{
int count = flake.GetCount();
if (count < spline.getListLength())
{
Vector3 positionAtI = spline.getPositionAtI(count);
Vector3[] coordinateFrame = frenet.frenetAt(count);
Vector3 T = coordinateFrame[0];
Vector3 N = coordinateFrame[1];
Vector3 B = coordinateFrame[2];
float omega = GetOmega(flake, T);
Debug.DrawLine(positionAtI, positionAtI + T);
Debug.DrawLine(positionAtI, positionAtI + N);
Debug.DrawLine(positionAtI, positionAtI + B);
//we need the position it should be at, plus rotation
flake.transform.position = positionAtI;
flake.transform.rotation = Quaternion.LookRotation(T, N);
Vector3 oldPosition = flake.transform.position;
flake.transform.RotateAround(positionAtI, T, Time.time);
flake.IncCount();
}
}