// iges.cmd // Surface Evolver script to write IGES file for surface, using IGES // parametric patches, type 114. /* Assumptions: 3D soapfilm model, linear model, not torus or symmetry group (use the "detorus" command if necessary to convert torus or symmetry to unwrapped surface, but remember that detorus alters the surface) Does facets only, not edges. Does all facets, regardless of "show" criterion. Facet color is frontcolor on both sides. */ // usage: iges >>> "filename.igs" // Set up color translation array define iges_colors integer [16]; iges_black := 1 //iges_colors[black] := 1 iges_colors[red] := 2 iges_colors[green] := 3 iges_colors[blue] := 4 iges_colors[yellow] := 5 iges_colors[magenta] := 6 iges_colors[cyan] := 7 iges_colors[white] := 8 iges_colors[brown] := 2 // red iges_colors[lightgray] := 8 // white iges_colors[darkgray] := 1 // black iges_colors[lightblue] := 4 // blue iges_colors[lightcyan] := 7 // cyan iges_colors[lightred] := 2 // red iges_colors[lightmagenta] := 7 iges := { local start_counter,global_counter,message,xmax,ymax,zmax; local maxsize,entype,paramdata,structure,linefont,level,view; local transmat,label,status,directory_counter,lineweight; local colornum,paramcount,form,reserved,entlabel,entsubscr; local parameter_counter,ctype,ptype,mvalue,nvalue,minu,maxu; local minv,maxv,co00,co10,co01,co11,line,subcount; // Check assumptions if torus then { errprintf "Cannot run 'iges' command in torus mode. Do 'detorus' first.\n"; abort; }; if space_dimension != 3 then { errprintf "The 'iges' command must be run in three-dimensional space.\n"; abort; }; if surface_dimension == 1 then { errprintf "The 'iges' command is not meant for the string model.\n"; abort; }; if simplex_representation then { errprintf "The 'iges' command is not meant for the simplex model.\n"; abort; }; if lagrange_order >= 2 then { errprintf "The 'iges' command is meant for the linear model, not quadratic or Lagrange.\n"; abort; }; if rgb_colors then { errprintf "The 'iges' command does not do RGB colors; do rgb_colors off.\n"; abort; }; // Flag section // Don't need this since not doing binary or compressed format. // Start section start_counter := 0; start_counter += 1; printf "%-72sS%07d\n","IGES version of Surface Evolver surface",start_counter; start_counter += 1; printf " %-69sS%07d\n",datafilename,start_counter; start_counter += 1; printf "%-72sS%07d\n","Created using iges.cmd Evolver script.", start_counter; // Global section global_counter := 0; global_counter += 1; printf "%-72sG%07d\n","1H,,1H;,",global_counter; global_counter += 1; printf "%02dH%-69sG%07d\n",sizeof("Surface Evolver"),"Surface Evolver,", global_counter; global_counter += 1; message := sprintf "%s,",datafilename; printf "%02dH%-69sG%07d\n",sizeof(datafilename),message,global_counter; global_counter += 1; printf "%02dH%-69sG%07d\n",sizeof("Surface Evolver"),"Surface Evolver,", global_counter; global_counter += 1; printf "%02dH%-69sG%07d\n",sizeof("Surface Evolver"),"Surface Evolver,", global_counter; global_counter += 1; printf "%-72sG%07d\n","32,75,6,75,15,,1.0,1,2HIN,32768,0.0394,", global_counter; global_counter += 1; printf "%-72sG%07d\n","15H00000000.000000,", global_counter; // date xmax := max(vertex,abs(x)); ymax := max(vertex,abs(y)); zmax := max(vertex,abs(z)); maxsize := (xmax > ymax) ? xmax : ymax; maxsize := (zmax > maxsize) ? zmax : maxsize; message := sprintf "%g,%g,",maxsize/10000000,maxsize; global_counter += 1; printf "%-72sG%07d\n",message, global_counter; global_counter += 1; printf "%02dH%-69sG%07d\n",sizeof("Name of author"),"Name of author,", global_counter; global_counter += 1; printf "%02dH%-69sG%07d\n",sizeof("Author's organization"), "Author's organization,", global_counter; global_counter += 1; printf "%-72sG%07d\n","15H00000000.000000;", global_counter; // date // Directory entry section. Each entry 20 8-char fields on two lines. // Fields with default values entype := 0; // 1 and 11 paramdata := 1; // 2 structure := 0; // 3 linefont := 0; // 4 level := 0; // 5 view := 0; // 6 transmat := 0; // 7 label := 0; // 8 status := "00000000"; // 9; actually 4 two-digit numbers directory_counter := 0; // 10 and 20 lineweight := 0; // 12 colornum := 0; // 13 paramcount := 0; // 14 form := 0; // 15 reserved := " "; // 16 and 17 entlabel := "entity"; // 18 entsubscr := 0; // 19 // Facets as "parametric surface" types entype := 114; status := "00010001"; paramcount := 1; entlabel := " FACET"; define facet attribute fpdata integer; define facet attribute fdir integer; foreach facet ff where show and color >= 0 do { ff.fpdata := paramdata; entsubscr := ff.id; directory_counter += 1; ff.fdir := directory_counter; printf "%8d%8d%8d%8d%8d%8d%8d%8d%8sD%7d\n",entype,paramdata, structure,linefont,level,view,transmat,label,status, directory_counter; directory_counter += 1; printf "%8d%8d%8d%8d%8d%8s%8s%8s%8dD%7d\n",entype,lineweight, (ff.color == BLACK ? iges_black : iges_colors[ff.color]), paramcount,form,reserved,reserved, entlabel,entsubscr,directory_counter; paramdata += 7; }; // Geometry element entype := 402; status := "00000301"; paramcount := ceil(facet_count/10); form := 7; entlabel := " SURFACE"; entsubscr := 1; directory_counter += 1; printf "%8d%8d%8d%8d%8d%8d%8d%8d%8sD%7d\n",entype,paramdata,structure, linefont,level,view,transmat,label,status,directory_counter; directory_counter += 1; printf "%8d%8d%8d%8d%8d%8s%8s%8s%8dD%7d\n",entype,lineweight,colornum, paramcount,form,reserved,reserved,entlabel,entsubscr,directory_counter; // Parameter data section parameter_counter := 0; // Facets entype := 114; ctype := 1; // linear ptype := 0; // unspecified mvalue := 1; // number of u segments nvalue := 1; // number of v segments minu := 0; maxu := 1; minv := 0; maxv := 1; foreach facet ff where show and color >= 0 do { parameter_counter += 1; if ff.fpdata != parameter_counter then errprintf "ERROR: bad facet parameter line number, facet %d. Is %d, should be %d.\n", ff.id,parameter_counter,ff.fpdata; message := sprintf "%d,%d,%d,%d,%d,%g,%g,%g,%g,",entype,ctype,ptype, mvalue,nvalue,minu,maxu,minv,maxv; printf "%-64s%8dP%7d\n",message,ff.fdir,parameter_counter; co00 := ff.vertex[1].x; co10 := ff.vertex[2].x-ff.vertex[1].x; co01 := ff.vertex[3].x-ff.vertex[1].x; co11 := ff.vertex[1].x-ff.vertex[2].x; message := sprintf "%10.7f,%10.7f,0,0,%10.7f,%10.7f,0,0,", co00,co10,co01,co11; parameter_counter += 1; printf "%-64s%8dP%7d\n",message,ff.fdir,parameter_counter; message := "0,0,0,0,0,0,0,0,"; parameter_counter += 1; printf "%-64s%8dP%7d\n",message,ff.fdir,parameter_counter; co00 := ff.vertex[1].y; co10 := ff.vertex[2].y-ff.vertex[1].y; co01 := ff.vertex[3].y-ff.vertex[1].y; co11 := ff.vertex[1].y-ff.vertex[2].y; message := sprintf "%10.7f,%10.7f,0,0,%10.7f,%10.7f,0,0,", co00,co10,co01,co11; parameter_counter += 1; printf "%-64s%8dP%7d\n",message,ff.fdir,parameter_counter; message := "0,0,0,0,0,0,0,0,"; parameter_counter += 1; printf "%-64s%8dP%7d\n",message,ff.fdir,parameter_counter; co00 := ff.vertex[1].z; co10 := ff.vertex[2].z-ff.vertex[1].z; co01 := ff.vertex[3].z-ff.vertex[1].z; co11 := ff.vertex[1].z-ff.vertex[2].z; message := sprintf "%10.7f,%10.7f,0,0,%10.7f,%10.7f,0,0,", co00,co10,co01,co11; parameter_counter += 1; printf "%-64s%8dP%7d\n",message,ff.fdir,parameter_counter; message := "0,0,0,0,0,0,0,0,"; parameter_counter += 1; printf "%-64s%8dP%7d\n",message,ff.fdir,parameter_counter; }; // Geometry element line := sprintf "402,%d,",facet_count; subcount := 0; foreach facet ff where show and color >= 0 do { if subcount == 10 then { parameter_counter += 1; printf "%-64s%8dP%7d\n",line,directory_counter-1,parameter_counter; line := "" ; subcount := 0; }; line := sprintf"%s%d,",line,ff.fdir; subcount += 1; }; line := sprintf "%s0,0;",line; // sample files ended with 2 extra 0's parameter_counter += 1; printf "%-64s%8dP%7d\n",line,directory_counter-1,parameter_counter; // Terminate section printf "S%07dG%07dD%07dP%07d%40sT0000001\n",start_counter,global_counter, directory_counter,parameter_counter," "; } // End iges.cmd // Usage: iges >>> "filename.igs"