75 lines
2.8 KiB
Matlab
75 lines
2.8 KiB
Matlab
%COMPARE_NORME_ZSLICE Compare |E| on z=const plane: COMSOL vs OpticsFEM.
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%
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% Usage (in MATLAB):
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% cd('.../3D opticsfem-master/compare')
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% compare_normE_zslice
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%
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% Before first run, export COMSOL slice once:
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% run_export_comsol % 一键导出（需 LiveLink + SBC.mph）
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%
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% Or manually export from COMSOL GUI to data/comsol_z050.txt
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% with columns: x y z normE (tab/space separated).
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clear; clc; close all;
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thisDir = fileparts(mfilename('fullpath'));
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projDir = fileparts(thisDir);
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cfg = struct();
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cfg.zCut = 0.5;
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cfg.meshFile = fullfile(projDir, 'build', 'Release', 'SBCmesh.dat');
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cfg.outFileDir = fullfile(projDir, 'build', 'Release', 'OutFile');
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cfg.comsolFile = fullfile(thisDir, 'data', 'comsol_z050.txt');
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cfg.outPng = fullfile(thisDir, 'data', 'compare_normE_z050.png');
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cfg.gridN = 121;
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if ~isfile(cfg.meshFile)
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cfg.meshFile = fullfile(projDir, 'SBCmesh.dat');
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end
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assert(isfile(cfg.meshFile), 'Mesh not found: %s', cfg.meshFile);
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assert(isfile(fullfile(cfg.outFileDir, 'normE')), ...
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'OpticsFEM normE not found. Run OpticsFEM.exe first.');
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if ~isfile(cfg.comsolFile)
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mphPath = fullfile(projDir, '..', '三维matlab代码', 'matlab 3D一阶散射问题', 'SBC.mph');
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if isfile(mphPath) && exist('mphload', 'file') == 2
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fprintf('COMSOL data missing, exporting from mph ...\n');
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export_comsol_slice(mphPath, cfg.comsolFile, cfg.zCut, cfg.gridN, cfg.gridN);
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else
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error(['COMSOL 切面数据不存在: %s\n\n' ...
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'请先任选一种方式生成该文件：\n' ...
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' 1) 运行 run_export_comsol.m（需 LiveLink + SBC.mph）\n' ...
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' 2) COMSOL GUI: Cut Plane z=0.5 → Export → 保存到上述路径\n\n' ...
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'说明：项目里只有 SBC.mph.lock，没有 mph 本体，需在本机 COMSOL 里打开/保存模型。'], ...
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cfg.comsolFile);
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end
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end
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fprintf('Loading mesh: %s\n', cfg.meshFile);
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mesh = load_SBCmesh_dat(cfg.meshFile);
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fprintf('Loading OpticsFEM normE: %s\n', cfg.outFileDir);
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normE = load_opticsfem_normE(cfg.outFileDir);
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assert(numel(normE) == mesh.NbrVertex, ...
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'normE length (%d) != NbrVertex (%d)', numel(normE), mesh.NbrVertex);
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fprintf('Building OpticsFEM z=%.2f slice ...\n', cfg.zCut);
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sliceOpt = build_z_slice(mesh, normE, cfg.zCut, 3);
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fprintf('Loading COMSOL slice: %s\n', cfg.comsolFile);
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sliceCom = load_comsol_slice(cfg.comsolFile, cfg.zCut, 1e-3);
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xg = linspace(-0.5, 0.5, cfg.gridN);
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yg = linspace(-0.5, 0.5, cfg.gridN);
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gridCom = interp_slice_to_grid(sliceCom, xg, yg);
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gridOpt = interp_slice_to_grid(sliceOpt, xg, yg);
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fprintf('Plotting comparison ...\n');
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stats = plot_compare_heatmaps(gridCom, gridOpt, cfg.zCut, cfg.outPng);
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assignin('base', 'compareStats', stats);
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assignin('base', 'sliceOpt', sliceOpt);
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assignin('base', 'sliceCom', sliceCom);
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fprintf('Done.\n');
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