function mp= Build_Lshape()
% Bulid mp obj （contains models and all arguments)
%% init
pace=1;
Pst=[0 0 0];
Ped=[3 15 15];
Ped=FCM_dV.round_Ped(Pst,Ped,pace);
maxdeep=5;
order=3;
viewxy=[150 30];

Shape.accessThreshold(pace/maxdeep/2/2/2);%
Oa=[0 0 0];
Ra=[0 0 0];

rvec=(Ped-Pst)/pace
num_cells=rvec(1)*rvec(2)*rvec(3);
fprintf("num_cells: %.0f\n",num_cells);% show num of cells


%% add SS lib & python path
additon_path=pwd;

if count(py.sys.path,additon_path) == 0
    insert(py.sys.path,int32(0),additon_path);
end

%% assemble c0
%----------------------------------------2D sketch

rect_top=Rect([0 0 0],[3 3 0]);
cube_top=Sketch([0 0 0],Ra,15,rect_top);
c_top=CSG();c_top.init(cube_top);

rect_down=Rect([0 0 0],[3 15 0]);
cube_down=Sketch([0 0 0],Ra,3,rect_down);
c_down=CSG();c_down.init(cube_down);


rc_line=Line([3 3 0],[0 3 0]);
rc_skt=Sketch([0 0 3],Ra,12,rc_line);
rc_obj=RoundCorner(6,rc_skt,rc_line,false,false);
rc=CSG();rc.init(rc_obj,'rc');


c=c_top+c_down+rc;




V0=1;
% time and calculate Volume
tic
fcmv=FCM_V(Pst,Ped,pace,maxdeep,order,@c.calSDF,@(X) ones(size(X,1),1));% |||1 dV
V0=fcmv.calIntegral_V();
Vstd=243+(9-9/4*pi)*3;
Verr=(V0-Vstd)/Vstd
% fcmv=FCM_V(Pst,Ped,pace,maxdeep,order,@c.calSDF,@(X) ones(24,24,size(X,1)));% |||1 dV
% K0=sum(fcmv.cal_Ke(),3);
% K0(1)

tmp_c=CSG('Sphere',[1.5,1.5,1.5],1.5);
fcmv=FCM_V(Pst,Ped,pace,maxdeep,order,@tmp_c.calSDF,@(X) ones(size(X,1),1));% |||1 dV
calV=fcmv.calIntegral_V();
stdV=4/3*pi*1.5^3;
err=abs(calV-stdV)/stdV
% S0=fcmdv.calIntegral_S(Dir)
% Sstd=4*pi*5*5;
% abs(S0-Sstd)/Sstd
% 
% fcmdv=FCM_V(Pst,Ped,pace,maxdeep,order,@tmp_c.calSDF,@(X) ones(size(X,1),1));% |||1 dV
% Vstd=4/3*pi*5^3;
% V00=fcmdv.calIntegral_V()
% abs(Vstd-V00)/Vstd
fprintf('V0: %f   ,Time: %f\n',V0,toc);

%% build Dirichlet/Neumann boundary
%-----------------------------------------Dir
eepsD=1.5e-2;
eepsN=1e-3;


Dirich_csg=CSG('Cube','corner',[0 0 15],Ra,[3 3 eps]);
Dirich_csg.judge_func=@(X) abs(X(:,3)-15)<eepsD;

%------------------------------------------Neu
Neuman_csg=CSG('Cube','corner',[0 15 0],Ra,[3 eps 3]);
Neuman_csg.judge_func=@(X) abs(X(:,2)-15)<eepsN;
Neuman_csg.fdv=@cal_NeuF;

% fcmdv=FCM_dV(Pst,Ped,pace,maxdeep,order,@c.calSDF,@(X) ones(size(X,1),1));% |||1 dV
% S0=fcmdv.calIntegral_S(Dirich_csg)
% Sstd=9;
% relaS=(S0-Sstd)/Sstd
% 
% S1=fcmdv.calIntegral_S(Neuman_csg)
% S1std=9;
% relaS1=(S1-S1std)/S1std

%% show model
clf;
% c=c+(CSG("NULL")*Dirich_csg);
c.set_display_args(Pst,Ped,pace/6,'viewxy',viewxy);
c.saveAs('c');
c.display_csg();
axis on

% fcmv=FCM_V(Pst,Ped,pace,maxdeep,order,@c.calSDF,@(X) ones(size(X,1),1));% |||1 dV
% V0=fcmv.calIntegral_V(true);


%% init mp(save handle)
mp=ModelPlus(Pst,Ped,pace,order,maxdeep);
mp.c=c;
mp.Dirich_csg=Dirich_csg;
mp.Neuman_csg=Neuman_csg;
mp.V0=V0;
mp.viewxy=viewxy;
mp.E=2e11*1e-3;
mp.u=0.3;


tmphandle=TmpHandle();
tmphandle.rcH=rc_obj;
mp.tmphandle=tmphandle;

mp.strongDBC=1;
mp.strongNBC=1;
mp.Neu_st=[0 15 0];
mp.Neu_ed=[3 15 3];
if 1 && order<=3
    saveKeH=SaveKe(mp,@compute_B_in_local,mp.pace,mp.order,mp);
    mp.saveKe=saveKeH;
end

%% set args here
mp.fixedNeu=1;
mp.iscontrast=1;
mp.isrecord=1;

%% init fmt
tic
fmt=FeatureMappingTable(c,Pst,Ped,pace);
fmt.reflash_table();
tini=toc;
mp.recorder.time_maintain_fmt(end+1)=tini;
mp.fmt=fmt;


end

function ret=cal_NeuF(X)
    ret=zeros(size(X,1),3)+[0 0 -900]/9*1e3;
end