#include "solvespace.h" void StepFileWriter::WriteHeader(void) { fprintf(f, "ISO-10303-21;\n" "HEADER;\n" "\n" "FILE_DESCRIPTION((''), '2;1');\n" "\n" "FILE_NAME(\n" " 'output_file',\n" " '2009-06-07T17:44:47-07:00',\n" " (''),\n" " (''),\n" " 'SolveSpace',\n" " '',\n" " ''\n" ");\n" "\n" "FILE_SCHEMA (('CONFIG_CONTROL_DESIGN'));\n" "ENDSEC;\n" "\n" "DATA;\n" "\n" "/**********************************************************\n" " * This defines the units and tolerances for the file. It\n" " * is always the same, independent of the actual data.\n" " **********************************************************/\n" "#158=(\n" "LENGTH_UNIT()\n" "NAMED_UNIT(*)\n" "SI_UNIT(.MILLI.,.METRE.)\n" ");\n" "#161=(\n" "NAMED_UNIT(*)\n" "PLANE_ANGLE_UNIT()\n" "SI_UNIT($,.RADIAN.)\n" ");\n" "#166=(\n" "NAMED_UNIT(*)\n" "SI_UNIT($,.STERADIAN.)\n" "SOLID_ANGLE_UNIT()\n" ");\n" "#167=UNCERTAINTY_MEASURE_WITH_UNIT(LENGTH_MEASURE(0.001),#158,\n" "'DISTANCE_ACCURACY_VALUE',\n" "'string');\n" "#168=(\n" "GEOMETRIC_REPRESENTATION_CONTEXT(3)\n" "GLOBAL_UNCERTAINTY_ASSIGNED_CONTEXT((#167))\n" "GLOBAL_UNIT_ASSIGNED_CONTEXT((#166,#161,#158))\n" "REPRESENTATION_CONTEXT('ID1','3D')\n" ");\n" "#169=SHAPE_REPRESENTATION('',(#170),#168);\n" "#170=AXIS2_PLACEMENT_3D('',#173,#171,#172);\n" "#171=DIRECTION('',(0.,0.,1.));\n" "#172=DIRECTION('',(1.,0.,0.));\n" "#173=CARTESIAN_POINT('',(0.,0.,0.));\n" "\n" ); } int StepFileWriter::ExportCurve(SBezier *sb) { int i, ret = id; fprintf(f, "#%d=B_SPLINE_CURVE_WITH_KNOTS('',%d,(", ret, sb->deg, (sb->deg + 1), (sb->deg + 1)); for(i = 0; i <= sb->deg; i++) { fprintf(f, "#%d", ret + i + 1); if(i != sb->deg) fprintf(f, ","); } fprintf(f, "),.UNSPECIFIED.,.F.,.F.,(%d, %d),", (sb->deg + 1), (sb-> deg + 1)); fprintf(f, "(0.000,1.000),.UNSPECIFIED.);\n"); for(i = 0; i <= sb->deg; i++) { fprintf(f, "#%d=CARTESIAN_POINT('',(%.10f,%.10f,%.10f));\n", id + 1 + i, CO(sb->ctrl[i])); } fprintf(f, "\n"); id = ret + 1 + (sb->deg + 1); return ret; } int StepFileWriter::ExportSurface(SSurface *ss) { int i, j, srfid = id; fprintf(f, "#%d=B_SPLINE_SURFACE_WITH_KNOTS('',%d,%d,(", srfid, ss->degm, ss->degn); for(i = 0; i <= ss->degm; i++) { fprintf(f, "("); for(j = 0; j <= ss->degn; j++) { fprintf(f, "#%d", srfid + 1 + j + i*(ss->degn + 1)); if(j != ss->degn) fprintf(f, ","); } fprintf(f, ")"); if(i != ss->degm) fprintf(f, ","); } fprintf(f, "),.UNSPECIFIED.,.F.,.F.,.F.,(%d,%d),(%d,%d),", (ss->degm + 1), (ss->degm + 1), (ss->degn + 1), (ss->degn + 1)); fprintf(f, "(0.000,1.000),(0.000,1.000),.UNSPECIFIED.);\n"); for(i = 0; i <= ss->degm; i++) { for(j = 0; j <= ss->degn; j++) { fprintf(f, "#%d=CARTESIAN_POINT('',(%.10f,%.10f,%.10f));\n", srfid + 1 + j + i*(ss->degn + 1), CO(ss->ctrl[i][j])); } } fprintf(f, "\n"); id = srfid + 1 + (ss->degm + 1)*(ss->degn + 1); SBezierList sbl; SPolygon sp; ZERO(&sbl); ZERO(&sp); SEdge errorAt; bool allClosed; ss->MakeSectionEdgesInto(shell, NULL, &sbl); SBezierLoopSet sbls = SBezierLoopSet::From(&sbl, &sp, &allClosed, &errorAt); List listOfLoops; ZERO(&listOfLoops); SBezierLoop *loop; for(loop = sbls.l.First(); loop; loop = sbls.l.NextAfter(loop)) { List listOfTrims; ZERO(&listOfTrims); SBezier *sb; for(sb = loop->l.First(); sb; sb = loop->l.NextAfter(sb)) { int curveId = ExportCurve(sb); fprintf(f, "#%d=CARTESIAN_POINT('',(%.10f,%.10f,%.10f));\n", id, CO(sb->Start())); fprintf(f, "#%d=VERTEX_POINT('',#%d);\n", id+1, id); fprintf(f, "#%d=CARTESIAN_POINT('',(%.10f,%.10f,%.10f));\n", id+2, CO(sb->Finish())); fprintf(f, "#%d=VERTEX_POINT('',#%d);\n", id+3, id+2); fprintf(f, "#%d=EDGE_CURVE('',#%d,#%d,#%d,%s);\n", id+4, id+1, id+3, curveId, ".T."); fprintf(f, "#%d=ORIENTED_EDGE('',*,*,#%d,.T.);\n", id+5, id+4); i = id+5; listOfTrims.Add(&i); id += 6; } fprintf(f, "#%d=EDGE_LOOP('',(", id); int *ei; for(ei = listOfTrims.First(); ei; ei = listOfTrims.NextAfter(ei)) { fprintf(f, "#%d", *ei); if(listOfTrims.NextAfter(ei) != NULL) fprintf(f, ","); } fprintf(f, "));\n"); int fb = id + 1; fprintf(f, "#%d=FACE_OUTER_BOUND('',#%d,.T.);\n", fb, id); listOfLoops.Add(&fb); id += 2; listOfTrims.Clear(); } int advFaceId = id; fprintf(f, "#%d=ADVANCED_FACE('',(", advFaceId); int *fb; for(fb = listOfLoops.First(); fb; fb = listOfLoops.NextAfter(fb)) { fprintf(f, "#%d", *fb); if(listOfLoops.NextAfter(fb) != NULL) fprintf(f, ","); } fprintf(f, "),#%d,.T.);\n", srfid); fprintf(f, "\n"); id++; listOfLoops.Clear(); return advFaceId; } void StepFileWriter::ExportTo(char *file) { Group *g = SK.GetGroup(SS.GW.activeGroup); shell = &(g->runningShell); if(shell->surface.n == 0) { Error("The model does not contain any surfaces to export.%s", g->runningMesh.l.n > 0 ? "\r\nThe model does contain triangles from a mesh, but a " "triangle mesh cannot be exported as a STEP file. Try " "File -> Export Mesh... instead." : ""); return; } f = fopen(file, "wb"); if(!f) { Error("Couldn't write to '%s'", file); return; } WriteHeader(); id = 200; List ls; ZERO(&ls); SSurface *ss; for(ss = shell->surface.First(); ss; ss = shell->surface.NextAfter(ss)) { if(ss->trim.n == 0) continue; int sid = ExportSurface(ss); ls.Add(&sid); } fprintf(f, "#%d=CLOSED_SHELL('',(", id); int *es; for(es = ls.First(); es; es = ls.NextAfter(es)) { fprintf(f, "#%d", *es); if(ls.NextAfter(es) != NULL) fprintf(f, ","); } fprintf(f, "));\n"); fprintf(f, "#%d=MANIFOLD_SOLID_BREP('brep_1',#%d);\n", id+1, id); fprintf(f, "#%d=ADVANCED_BREP_SHAPE_REPRESENTATION('',(#%d,#170),#168);\n", id+2, id+1); fprintf(f, "#%d=SHAPE_REPRESENTATION_RELATIONSHIP($,$,#169,#%d);\n", id+3, id+2); fprintf(f, "\n" "ENDSEC;\n" "\n" "END-ISO-10303-21;\n" ); fclose(f); ls.Clear(); }