clc
clear all

%参考四面体
%顶点1-[1,0,0] 2-[0,1,0] 3-[0,0,1] 4-[0,0,1]

% 算例配置（改频率/材料/边界请编辑 case_config.m）
[phy, cfg] = case_config();

%读取网格
load(cfg.meshMatFile);
mesh.PECIndex=findIndex(phy.PEC,mesh);
mesh.PBCIndex=findPBCIndex(phy.src,phy.dst,cfg.pbcWaveVec,mesh);
mesh.PBCphi=cfg.pbcPhi;
mesh.PBCIndex2=findPBCIndex(phy.src2,phy.dst2,cfg.pbcWaveVec2,mesh);
mesh.PBCphi2=cfg.pbcPhi2;

%矩阵组装
solver.Ai=[];solver.Aj=[];solver.Av=[];
solver.Bi=[];solver.Bj=[];solver.Bv=[];
solver=assembly_equ(phy,mesh,solver);
solver.A=sparse(solver.Ai,solver.Aj,solver.Av);
solver.B=sparse(solver.Bi,solver.Bj,solver.Bv);
%Bloch boundary
solver=assembly_pbc_double(mesh,solver);

%求解
solver.A=solver.P'*solver.A*solver.P;
solver.B=solver.P'*solver.B*solver.P;
targetk0=2*pi/(phy.c_const/phy.ff0);
sigma=targetk0*targetk0;
numberSolve=cfg.NbrMode;
[solver.x,GAMA_sq]=eigs(solver.A,solver.B,numberSolve,sigma);
solverk0=diag(sqrt(GAMA_sq));
solverff0=phy.c_const./(2*pi./solverk0)

%计算电场
nn=2;%第nn个模式
triIndex=findTri(9,mesh);
[x,y,normE]=get_ele(triIndex,mesh,solver.P*solver.x(:,nn));
patch(x,y,normE,'EdgeAlpha',0)
colormap jet;
colorbar