Add beginnings of STEP export, which weren't as horrible as I had
feared. Though I don't have rational surfaces or curves going yet, and I don't have the stuff to handle holes or multiple outer contours in a single surface. [git-p4: depot-paths = "//depot/solvespace/": change = 1974]solver
Jonathan Westhues
parent
3e86050685
commit
9455037e49
1
Makefile
1
Makefile
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@ -39,6 +39,7 @@ SSOBJS = $(OBJDIR)\solvespace.obj \
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$(OBJDIR)\ttf.obj \
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$(OBJDIR)\generate.obj \
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$(OBJDIR)\export.obj \
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$(OBJDIR)\exportstep.obj \
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SRFOBJS = $(OBJDIR)\ratpoly.obj \
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$(OBJDIR)\curve.obj \
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@ -0,0 +1,243 @@
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#include "solvespace.h"
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void StepFileWriter::WriteHeader(void) {
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fprintf(f,
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"ISO-10303-21;\n"
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"HEADER;\n"
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"\n"
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"FILE_DESCRIPTION((''), '2;1');\n"
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"\n"
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"FILE_NAME(\n"
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" 'output_file',\n"
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" '2009-06-07T17:44:47-07:00',\n"
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" (''),\n"
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" (''),\n"
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" 'SolveSpace',\n"
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" '',\n"
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" ''\n"
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");\n"
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"\n"
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"FILE_SCHEMA (('CONFIG_CONTROL_DESIGN'));\n"
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"ENDSEC;\n"
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"\n"
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"DATA;\n"
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"\n"
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"/**********************************************************\n"
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" * This defines the units and tolerances for the file. It\n"
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" * is always the same, independent of the actual data.\n"
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" **********************************************************/\n"
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"#158=(\n"
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"LENGTH_UNIT()\n"
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"NAMED_UNIT(*)\n"
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"SI_UNIT(.MILLI.,.METRE.)\n"
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");\n"
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"#161=(\n"
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"NAMED_UNIT(*)\n"
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"PLANE_ANGLE_UNIT()\n"
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"SI_UNIT($,.RADIAN.)\n"
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");\n"
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"#166=(\n"
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"NAMED_UNIT(*)\n"
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"SI_UNIT($,.STERADIAN.)\n"
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"SOLID_ANGLE_UNIT()\n"
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");\n"
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"#167=UNCERTAINTY_MEASURE_WITH_UNIT(LENGTH_MEASURE(0.001),#158,\n"
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"'DISTANCE_ACCURACY_VALUE',\n"
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"'string');\n"
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"#168=(\n"
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"GEOMETRIC_REPRESENTATION_CONTEXT(3)\n"
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"GLOBAL_UNCERTAINTY_ASSIGNED_CONTEXT((#167))\n"
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"GLOBAL_UNIT_ASSIGNED_CONTEXT((#166,#161,#158))\n"
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"REPRESENTATION_CONTEXT('ID1','3D')\n"
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");\n"
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"#169=SHAPE_REPRESENTATION('',(#170),#168);\n"
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"#170=AXIS2_PLACEMENT_3D('',#173,#171,#172);\n"
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"#171=DIRECTION('',(0.,0.,1.));\n"
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"#172=DIRECTION('',(1.,0.,0.));\n"
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"#173=CARTESIAN_POINT('',(0.,0.,0.));\n"
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"\n"
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);
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}
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int StepFileWriter::ExportCurve(SBezier *sb) {
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int i, ret = id;
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fprintf(f, "#%d=B_SPLINE_CURVE_WITH_KNOTS('',%d,(",
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ret, sb->deg, (sb->deg + 1), (sb->deg + 1));
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for(i = 0; i <= sb->deg; i++) {
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fprintf(f, "#%d", ret + i + 1);
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if(i != sb->deg) fprintf(f, ",");
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}
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fprintf(f, "),.UNSPECIFIED.,.F.,.F.,(%d, %d),",
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(sb->deg + 1), (sb-> deg + 1));
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fprintf(f, "(0.000,1.000),.UNSPECIFIED.);\n");
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for(i = 0; i <= sb->deg; i++) {
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fprintf(f, "#%d=CARTESIAN_POINT('',(%.10f,%.10f,%.10f));\n",
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id + 1 + i,
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CO(sb->ctrl[i]));
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}
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fprintf(f, "\n");
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id = ret + 1 + (sb->deg + 1);
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return ret;
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}
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int StepFileWriter::ExportSurface(SSurface *ss) {
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int i, j, srfid = id;
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fprintf(f, "#%d=B_SPLINE_SURFACE_WITH_KNOTS('',%d,%d,(",
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srfid, ss->degm, ss->degn);
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for(i = 0; i <= ss->degm; i++) {
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fprintf(f, "(");
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for(j = 0; j <= ss->degn; j++) {
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fprintf(f, "#%d", srfid + 1 + j + i*(ss->degn + 1));
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if(j != ss->degn) fprintf(f, ",");
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}
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fprintf(f, ")");
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if(i != ss->degm) fprintf(f, ",");
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}
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fprintf(f, "),.UNSPECIFIED.,.F.,.F.,.F.,(%d,%d),(%d,%d),",
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(ss->degm + 1), (ss->degm + 1),
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(ss->degn + 1), (ss->degn + 1));
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fprintf(f, "(0.000,1.000),(0.000,1.000),.UNSPECIFIED.);\n");
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for(i = 0; i <= ss->degm; i++) {
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for(j = 0; j <= ss->degn; j++) {
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fprintf(f, "#%d=CARTESIAN_POINT('',(%.10f,%.10f,%.10f));\n",
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srfid + 1 + j + i*(ss->degn + 1),
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CO(ss->ctrl[i][j]));
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}
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}
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fprintf(f, "\n");
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id = srfid + 1 + (ss->degm + 1)*(ss->degn + 1);
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SBezierList sbl;
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SPolygon sp;
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ZERO(&sbl);
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ZERO(&sp);
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SEdge errorAt;
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bool allClosed;
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ss->MakeSectionEdgesInto(shell, NULL, &sbl);
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SBezierLoopSet sbls = SBezierLoopSet::From(&sbl, &sp, &allClosed, &errorAt);
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List<int> listOfLoops;
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ZERO(&listOfLoops);
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SBezierLoop *loop;
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for(loop = sbls.l.First(); loop; loop = sbls.l.NextAfter(loop)) {
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List<int> listOfTrims;
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ZERO(&listOfTrims);
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SBezier *sb;
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for(sb = loop->l.First(); sb; sb = loop->l.NextAfter(sb)) {
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int curveId = ExportCurve(sb);
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fprintf(f, "#%d=CARTESIAN_POINT('',(%.10f,%.10f,%.10f));\n",
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id, CO(sb->Start()));
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fprintf(f, "#%d=VERTEX_POINT('',#%d);\n", id+1, id);
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fprintf(f, "#%d=CARTESIAN_POINT('',(%.10f,%.10f,%.10f));\n",
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id+2, CO(sb->Finish()));
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fprintf(f, "#%d=VERTEX_POINT('',#%d);\n", id+3, id+2);
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fprintf(f, "#%d=EDGE_CURVE('',#%d,#%d,#%d,%s);\n",
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id+4, id+1, id+3, curveId, ".T.");
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fprintf(f, "#%d=ORIENTED_EDGE('',*,*,#%d,.T.);\n",
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id+5, id+4);
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i = id+5;
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listOfTrims.Add(&i);
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id += 6;
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}
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fprintf(f, "#%d=EDGE_LOOP('',(", id);
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int *ei;
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for(ei = listOfTrims.First(); ei; ei = listOfTrims.NextAfter(ei)) {
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fprintf(f, "#%d", *ei);
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if(listOfTrims.NextAfter(ei) != NULL) fprintf(f, ",");
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}
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fprintf(f, "));\n");
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int fb = id + 1;
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fprintf(f, "#%d=FACE_OUTER_BOUND('',#%d,.T.);\n", fb, id);
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listOfLoops.Add(&fb);
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id += 2;
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listOfTrims.Clear();
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}
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int advFaceId = id;
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fprintf(f, "#%d=ADVANCED_FACE('',(", advFaceId);
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int *fb;
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for(fb = listOfLoops.First(); fb; fb = listOfLoops.NextAfter(fb)) {
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fprintf(f, "#%d", *fb);
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if(listOfLoops.NextAfter(fb) != NULL) fprintf(f, ",");
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}
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fprintf(f, "),#%d,.T.);\n", srfid);
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fprintf(f, "\n");
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id++;
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listOfLoops.Clear();
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return advFaceId;
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}
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void StepFileWriter::ExportTo(char *file) {
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Group *g = SK.GetGroup(SS.GW.activeGroup);
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shell = &(g->runningShell);
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if(shell->surface.n == 0) {
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Error("The model does not contain any surfaces to export.%s",
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g->runningMesh.l.n > 0 ?
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"\r\nThe model does contain triangles from a mesh, but a "
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"triangle mesh cannot be exported as a STEP file. Try "
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"File -> Export Mesh... instead." : "");
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return;
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}
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f = fopen(file, "wb");
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if(!f) {
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Error("Couldn't write to '%s'", file);
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return;
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}
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WriteHeader();
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id = 200;
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List<int> ls;
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ZERO(&ls);
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SSurface *ss;
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for(ss = shell->surface.First(); ss; ss = shell->surface.NextAfter(ss)) {
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if(ss->trim.n == 0) continue;
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int sid = ExportSurface(ss);
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ls.Add(&sid);
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}
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fprintf(f, "#%d=CLOSED_SHELL('',(", id);
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int *es;
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for(es = ls.First(); es; es = ls.NextAfter(es)) {
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fprintf(f, "#%d", *es);
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if(ls.NextAfter(es) != NULL) fprintf(f, ",");
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}
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fprintf(f, "));\n");
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fprintf(f, "#%d=MANIFOLD_SOLID_BREP('brep_1',#%d);\n", id+1, id);
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fprintf(f, "#%d=ADVANCED_BREP_SHAPE_REPRESENTATION('',(#%d,#170),#168);\n",
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id+2, id+1);
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fprintf(f, "#%d=SHAPE_REPRESENTATION_RELATIONSHIP($,$,#169,#%d);\n",
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id+3, id+2);
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fprintf(f,
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"\n"
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"ENDSEC;\n"
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"\n"
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"END-ISO-10303-21;\n"
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);
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fclose(f);
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ls.Clear();
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}
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@ -22,7 +22,8 @@ const GraphicsWindow::MenuEntry GraphicsWindow::menu[] = {
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{ 1, "Export &Image...", MNU_EXPORT_PNG, 0, mFile },
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{ 1, "Export 2d &View...", MNU_EXPORT_VIEW, 0, mFile },
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{ 1, "Export 2d &Section...", MNU_EXPORT_SECTION, 0, mFile },
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{ 1, "Export &Mesh...", MNU_EXPORT_MESH, 0, mFile },
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{ 1, "Export Triangle &Mesh...", MNU_EXPORT_MESH, 0, mFile },
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{ 1, "Export &Surfaces...", MNU_EXPORT_SURFACES,0, mFile },
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{ 1, NULL, 0, 0, NULL },
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{ 1, "E&xit", MNU_EXIT, 0, mFile },
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@ -380,6 +380,15 @@ void SolveSpace::MenuFile(int id) {
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break;
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}
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case GraphicsWindow::MNU_EXPORT_SURFACES: {
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char exportFile[MAX_PATH] = "";
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if(!GetSaveFile(exportFile, SRF_EXT, SRF_PATTERN)) break;
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StepFileWriter sfw;
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ZERO(&sfw);
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sfw.ExportTo(exportFile);
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break;
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}
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case GraphicsWindow::MNU_EXIT:
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if(!SS.OkayToStartNewFile()) break;
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SS.Exit();
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15
solvespace.h
15
solvespace.h
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@ -80,6 +80,9 @@ int SaveFileYesNoCancel(void);
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#define PNG_EXT "png"
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#define STL_PATTERN "STL Mesh (*.stl)\0*.stl\0All Files (*)\0*\0\0"
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#define STL_EXT "stl"
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#define SRF_PATTERN "STEP File (*.step;*.stp)\0*.step;*.stp\0" \
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"All Files(*)\0*\0\0"
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#define SRF_EXT "step"
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#define VEC_PATTERN "DXF File (*.dxf)\0*.dxf\0" \
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"Encapsulated PostScript (*.eps;*.ps)\0*.eps;*.ps\0" \
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"PDF File (*.pdf)\0*.pdf\0" \
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@ -422,6 +425,18 @@ public:
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void FinishAndCloseFile(void);
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};
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class StepFileWriter {
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public:
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void ExportTo(char *filename);
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void WriteHeader(void);
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int ExportCurve(SBezier *sb);
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int ExportSurface(SSurface *ss);
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SShell *shell;
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FILE *f;
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int id;
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};
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#ifdef LIBRARY
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# define ENTITY EntityBase
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# define CONSTRAINT ConstraintBase
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@ -274,7 +274,7 @@ void SSurface::MakeSectionEdgesInto(SShell *shell,
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SCurve *sc = shell->curve.FindById(stb->curve);
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SBezier *sb = &(sc->exact);
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if(sbl && sc->isExact && sb->deg != 1) {
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if(sbl && sc->isExact && (sb->deg != 1 || !sel)) {
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double ts, tf;
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if(stb->backwards) {
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sb->ClosestPointTo(stb->start, &tf);
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@ -294,7 +294,7 @@ void SSurface::MakeSectionEdgesInto(SShell *shell,
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sbl->l.Add(&keep_bef);
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} else {
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MakeTrimEdgesInto(sel, false, sc, stb);
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if(sel) MakeTrimEdgesInto(sel, false, sc, stb);
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}
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}
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}
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