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#define PI 3.1415926535897932384

int numCurves = 3;

float time = 0;
int pts [] = primpoints(0, @primnum);

for(int i=0; i<numCurves; ++i)
{
int prim = addprim(0, "polyline");
foreach(int pt; pts)
{

  vector N = point(0, "N", pt);
  vector tangentu = point(0, "tangentu", pt);
  vector tangentv = point(0, "tangentv", pt);
  vector P = point(0, "P", pt);
  float u = point(0, "u", pt);
  float uold = u;
  uold = chramp("ends", uold);
  
  float randRev = radians(fit01(rand(i+745),-90,90));
  randRev = randRev == 0 ? 1 : randRev;
  u = fit01(u, -PI, PI) * ch("revolutions");
  vector pos = set(sin(u-time+fit01(rand(i),0,360)), cos(u-time+fit01(rand(i+414),-360,360)), 0) * fit01(chramp("scaleDistrib", rand(i+979)), 0.3, 1.2);// *fit01(rand(i+@ptnum+979), 0.8, 1.2);
  matrix3 t = set(tangentu, N, tangentv);
  matrix3 tm = ident();
  rotate(tm, 90, set(0,1,0));
  vector p = P + (pos *tm*t);
  p = lerp(p, P, uold);
  int ptn = addpoint(0, p);
  addvertex(0, prim, ptn);
  
  addpointattrib(0, "curveId", 0);
  addpointattrib(0, "originalPrim", 0);
  setpointattrib(0, "curveId", ptn, @primnum+i+1);
  setpointattrib(0, "originalPrim", ptn, @primnum);
  
  setpointattrib(0, "start", ptn, @primnum);
  setpointattrib(0, "end", ptn, @primnum);
}
}

removeprim(0, @primnum, 1);



//rotate around another curve run over points
#define PI 3.1415926535897932384

int numCurves = 3;

float time = 0;
int pts [] = primpoints(0, @primnum);

for(int i=0; i<numCurves; ++i)
{
int prim = addprim(0, "polyline");
foreach(int pt; pts)
{

  vector N = point(0, "N", pt);
  vector tangentu = point(0, "tangentu", pt);
  vector tangentv = point(0, "tangentv", pt);
  vector P = point(0, "P", pt);
  float u = point(0, "u", pt);
  float uold = u;
  uold = chramp("ends", uold);
  
  float randRev = radians(fit01(rand(i+745),-90,90));
  randRev = randRev == 0 ? 1 : randRev;
  u = fit01(u, -PI, PI) * ch("revolutions");
  vector pos = set(sin(u-time+fit01(rand(i),0,360)), cos(u-time+fit01(rand(i+414),-360,360)), 0) * fit01(chramp("scaleDistrib", rand(i+979)), 0.3, 1.2);// *fit01(rand(i+@ptnum+979), 0.8, 1.2);
  matrix3 t = set(tangentu, N, tangentv);
  matrix3 tm = ident();
  rotate(tm, 90, set(0,1,0));
  vector p = P + (pos *tm*t);
  p = lerp(p, P, uold);
  int ptn = addpoint(0, p);
  addvertex(0, prim, ptn);
  
  addpointattrib(0, "curveId", 0);
  addpointattrib(0, "originalPrim", 0);
  setpointattrib(0, "curveId", ptn, @primnum+i+1);
  setpointattrib(0, "originalPrim", ptn, @primnum);
  
  setpointattrib(0, "start", ptn, @primnum);
  setpointattrib(0, "end", ptn, @primnum);
}
}

removeprim(0, @primnum, 1);