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constructor TGrd2DProcess.CreateGrid(Dat: TData; Nx,Ny: integer); | |
var N1,N2,N3,i,j: integer; h,S,q: double; LnUp1: TLn; SLn: TSLn; | |
begin | |
Self.Nx:=Nx; Self.Ny:=Ny; | |
hy1:=Dat.hy1; dNy1:=Dat.dNy1; | |
hx1:=Dat.hx1; dNx1:=Dat.dNx1; | |
Ny1:=Round(Ny*dNy1); | |
{Ceтка на плоскости XY} | |
for j:=0 to Dat.Ny do Y[j]:=Dat.Ly*j/Dat.Ny; | |
{Ceтка на плоскости XZ} | |
LnDn.Free; | |
LnDn:=TLn.CreateCopyLn(Dat.LnDn); | |
LnUp.Free; | |
LnUp:=TLn.CreateCopyLn(Dat.LnUp); | |
Grd.Free; | |
Grd:=TDGrd2D.CreateDGrd2D(Nx+1,Ny+1,0,Nx+1); | |
{Сетка вдоль нижней поверхности} | |
h:=LnDn.P[3].s/Nx; | |
N1:=Round(LnDn.P[1].s/h); | |
N3:=Round((LnDn.P[3].s-LnDn.P[2].s)/h); | |
N2:=Nx-N1-N3; | |
S:=LnDn.P[1].s-LnDn.P[0].s; | |
qx1:=Grd1De1(SLn,N1,Round(dNx1*N1),S,hx1); | |
for i:=0 to N1 do | |
begin | |
Grd.P[i,0].x:=LnDn.P[0].x*SLn.s[N1-i]/S+LnDn.P[1].x*(1-SLn.s[N1-i]/S); | |
Grd.P[i,0].y:=LnDn.P[0].y*SLn.s[N1-i]/S+LnDn.P[1].y*(1-SLn.s[N1-i]/S); | |
end; | |
S:=LnDn.P[2].s-LnDn.P[1].s; | |
qx2:=Grd1De2(SLn,N2,Round(dNx1*N2),S,hx1); | |
for i:=1 to N2 do | |
begin | |
Grd.P[i+N1,0].x:=LnDn.P[1].x*(1-SLn.s[i]/S)+LnDn.P[2].x*SLn.s[i]/S; | |
Grd.P[i+N1,0].y:=LnDn.P[1].y*(1-SLn.s[i]/S)+LnDn.P[2].y*SLn.s[i]/S; | |
end; | |
S:=LnDn.P[3].s-LnDn.P[2].s; | |
qx3:=Grd1De1(SLn,N3,Round(dNx1*N3),S,hx1); | |
for i:=1 to N3 do | |
begin | |
Grd.P[i+N1+N2,0].x:=LnDn.P[2].x*(1-SLn.s[i]/S)+LnDn.P[3].x*SLn.s[i]/S; | |
Grd.P[i+N1+N2,0].y:=LnDn.P[2].y*(1-SLn.s[i]/S)+LnDn.P[3].y*SLn.s[i]/S; | |
end; | |
{Сетка вдоль верхней поверхности} | |
for i:=0 to Nx do | |
begin | |
Grd.P[i,Ny].x:=LnUp.P[0].x*(1-i/Nx)+LnUp.P[1].x*i/Nx; | |
Grd.P[i,Ny].y:=LnUp.P[0].y*(1-i/Nx)+LnUp.P[1].y*i/Nx | |
end; | |
{Сетка внутри области} | |
qMax:=0; | |
for i:=0 to Nx do | |
begin | |
S:=Sqrt(Sqr(Grd.P[i,Ny].x-Grd.P[i,0].x)+Sqr(Grd.P[i,Ny].y-Grd.P[i,0].y)); | |
q:=Grd1De2(SLn,Ny,Ny1,S,hy1); | |
if qMax<q then qMax:=q; | |
for j:=1 to Ny-1 do | |
begin | |
Grd.P[i,j].x:=Grd.P[i,0].x*(1-SLn.s[j]/S)+Grd.P[i,Ny].x*SLn.s[j]/S; | |
Grd.P[i,j].y:=Grd.P[i,0].y*(1-SLn.s[j]/S)+Grd.P[i,Ny].y*SLn.s[j]/S; | |
end; | |
end; | |
{Перегружаем сетку в r} | |
for i:=0 to Nx do | |
for j:=0 to Ny do | |
begin | |
r[i,j].x:=Grd.P[i,j].x; r[i,j].y:=Grd.P[i,j].y; | |
end; | |
end; |
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