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// 08.08.17
// 08.09.16
// 10.01.02
// 13.10.21 ( __ added to varibles )
// 14.06.09 ( debugged -- the cause unknown )
function Out__=Phcutdata(VL__,FaceL__,PlaneD__)
global PHCUTPOINTL
Out__=[];
EL__=[];
Eps__=10^(-4);
for I__=1:Mixlength(FaceL__)
Face__=Mixop(I__,FaceL__);
for J__=1:length(Face__)
Nj__=J__+1;
if J__==length(Face__)
Nj__=1;
end;
N1__=Face__(J__); N2__=Face__(Nj__);
Tmp__=[N1__,N2__];
Flg__=0;
for K__=1:Mixlength(EL__)
Tmp1__=Mixop(K__,EL__);
Tmp2__=[Tmp1__(2),Tmp1__(1)];
if Tmp__==Tmp1__ | Tmp__==Tmp2__
Flg__=1;
break;
end
end;
if Flg__==0
EL__=Mixadd(EL__,Tmp__);
end;
end;
end;
Out0__=[];
for I__=1:Mixlength(EL__)
Tmp__=Mixop(I__,EL__);
Tmp1__=Mixop(Tmp__(1),VL__);
Tmp2__=Mixop(Tmp__(2),VL__);
Out0__=Mixadd(Out0__, Spaceline([Tmp1__,Tmp2__]));
end;
if Mixtype(PlaneD__)~=1
V1__=Mixop(1,PlaneD__);
Tmp__=Mixop(2,PlaneD__);
if length(Tmp__)>1
d__=V1__(1)*Tmp__(1)+V1__(2)*Tmp__(2)+V1__(3)*Tmp__(3);
else
d__=Tmp__;
end;
elseif type(PlaneD__)==1
V1__=PlaneD__(1:3);
d__=PlaneD__(4);
else
K__=mtlb_findstr(PlaneD__,'=');
if K__>0
Tmp1__=part(PlaneD__,1:K__-1);
Tmp2__=part(PlaneD__,K__+1:length(PlaneD__));
PlaneD__=Tmp1__+'-('+Tmp2__+')';
end;
x=0; y=0; z=0;
d__=-evstr(PlaneD__);
x=1; y=0; z=0;
Tmp1__=evstr(PlaneD__)+d__;
x=0; y=1; z=0;
Tmp2__=evstr(PlaneD__)+d__;
x=0; y=0; z=1;
Tmp3__=evstr(PlaneD__)+d__;
V1__=[Tmp1__,Tmp2__,Tmp3__];
end;
if V1__==[0,0,0]
Out__=Out0__;
return;
end;
V3__=[1,0,0];
Out1__=Rotate3data(Out0__,V1__,V3__);
// x=poly(0,'X');
Tmp2__=Rotate3pt([1,0,0],V3__,V1__);
Tmp__=V1__(1)*Tmp2__(1)+V1__(2)*Tmp2__(2)+V1__(3)*Tmp2__(3);
x0__=d__/Tmp__;
t__=poly(0,'T');
PtL__ =[];
for I__=1:Mixlength(Out1__)
Tmp__=Mixop(I__,Out1__);
Tmp1__=Tmp__(1,:); Tmp2__=Tmp__(2,:);
P__=Tmp1__+t__*(Tmp2__-Tmp1__);
Tmp__=Tmp1__(1)+t__*(Tmp2__(1)-Tmp1__(1));
if abs(coeff(Tmp__,1))<Eps__
Tmp__=[];
else
Tmp1__=coeff(Tmp__,1);
Tmp2__=x0__-coeff(Tmp__,0);
Tmp__=[Tmp2__/Tmp1__];
end;
if length(Tmp__)>0
Tmp__=Tmp__(1);
if (Tmp__>-Eps__) & (Tmp__<1+Eps__)
Tmp3__=horner(P__,Tmp__);
Tmp3__=Rotate3pt(Tmp3__,V3__,V1__);
if Tmp__<Eps__
Tmp1__=Mixop(I__,EL__);
Tmp1__=Tmp1__(1);
Tmp4__=MixS([Tmp1__,Tmp1__],Tmp3__);
else
if Tmp__>1-Eps__ then
Tmp1__=Mixop(I__,EL__);
Tmp1__=Tmp1__(2);
Tmp4__=MixS([Tmp1__,Tmp1__],Tmp3__);
else
Tmp4__=MixS(Mixop(I__,EL__),Tmp3__);
end;
end;
Flg__=0;
for J__=1:Mixlength(PtL__)
Tmp__=Mixop(J__,PtL__);
Tmp__=Mixop(2,Tmp__);
if norm(Tmp3__-Tmp__)<Eps__ then
Flg__=1;
break;
end;
end;
if Flg__==0
PtL__=Mixadd(PtL__,Tmp4__);
end;
end;
end;
end;
if Mixlength(PtL__)==0
Out__=Out0__;
return
end;
PL__=Mix(Mixop(1,PtL__));
QL__=Mixsub(2:Mixlength(PtL__),PtL__);
N__=Mixlength(QL__);
for I__=2:N__+1
Tmp1__=Mixop(Mixlength(PL__),PL__);
Tmp1__=Mixop(1,Tmp1__);
for J__=1:Mixlength(QL__)
Tmp2__=Mixop(J__,QL__);
Tmp2__=Mixop(1,Tmp2__);
Flg__=0;
for K__=1:Mixlength(FaceL__)
Tmp3__=Mixop(K__,FaceL__);
if Member(Tmp1__(1),Tmp3__) & Member(Tmp1__(2),Tmp3__) & Member(Tmp2__(1),Tmp3__) & Member(Tmp2__(2),Tmp3__)
Flg__=1;
break;
end;
end;
if Flg__==1
break;
end;
end;
J__=min(J__, Mixlength(QL__));
PL__=Mixadd(PL__,Mixop(J__,QL__));
Tmp1__=Mixsub(1:J__-1,QL__);
Tmp2__=Mixsub(J__+1:Mixlength(QL__),QL__);
QL__=Mixjoin(Tmp1__,Tmp2__);
if Mixlength(QL__)==0
break;
end;
end;
PHCUTPOINTL=PL__;
Tmp__=[];
for J__=1:Mixlength(PL__);
Tmp1__=Mixop(J__,PL__);
Tmp1__=Mixop(2,Tmp1__);
Tmp__=Mixadd(Tmp__,Tmp1__);
end;
Tmp1__=Mixop(1,PL__);
Tmp1__=Mixop(2,Tmp1__);
Tmp__=Mixadd(Tmp__,Tmp1__);
Out2__=Spaceline(Tmp__);
Out__=Mixadd(Out0__,Out2__);
endfunction
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