本文共 911 字，大约阅读时间需要 3 分钟。

the format of .sel file is like:

# per vertex status: 0=fixed, 1=deformable-region, 2=handle

function [group0, group1, group2] = read_sel(filename)group0 = [];group1 = [];group2 = [];  fp = fopen( filename, 'r' );  type = fscanf( fp, '%s', 1 );  index = 1;  while strcmp( type, '' ) == 0      if strcmp( type, '#' ) == 1          line = fgets(fp);          %ignore line      else          fseek(fp, -length(type), 0);          line = fgets(fp);          group = sscanf(line, '%d');          switch group              case 0                  group0 = [group0 index];                  index = index + 1;              case 1                  group1 = [group1 index];                  index = index + 1;              case 2                  group2 = [group2 index];                  index = index + 1;          end                end      type = fscanf( fp, '%s', 1 );  end

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