//-----------------------------------------------------------------------------
//
// Dots series
//
//-----------------------------------------------------------------------------
void MGL_EXPORT mgl_dots_ca(HMGL gr, HCDT x, HCDT y, HCDT z, HCDT c, HCDT a, const char *sch, const char *opt)
{
long n = x->GetNN(), d, k=1;
if(x->GetNz()>1) k=3; else if(x->GetNy()>1) k=2;
if(y->GetNN()!=n || z->GetNN()!=n || c->GetNN()!=n || (a && a->GetNN()!=n))
{ gr->SetWarn(mglWarnDim,"Dots"); return; }
gr->SaveState(opt);
d = gr->MeshNum>0 ? mgl_ipow(gr->MeshNum+1,k) : n;
d = n>d ? n/d:1;
static int cgid=1; gr->StartGroup("Dots",cgid++);
char mk=gr->SetPenPal(sch);
long ss=gr->AddTexture(sch);
if(mk==0) mk='.';
gr->Reserve(n);
for(long i=0;i<n;i+=d)
{
mglPoint p = mglPoint(x->vthr(i),y->vthr(i),z->vthr(i));
long pp = gr->AddPnt(p,gr->GetC(ss,c->vthr(i)),mglPoint(NAN),a?gr->GetA(a->vthr(i)):-1);
gr->mark_plot(pp, mk);
}
gr->EndGroup();
}
void MGL_NO_EXPORT mgl_ex_var12(mreal &xNew, mreal &yNew, mreal x, mreal y, const mreal *par)
{
mreal r=hypot(x,y), t=atan2(x,y), c1=par[0]*r;
mreal c2=mgl_ipow(sin(t+r),3), c3 = mgl_ipow(cos(t-r), 3);
xNew += c1*(c2 + c3); yNew += c1*(c2 - c3);
}