void SShell::MakeSectionEdgesInto(Vector n, double d, SEdgeList *sel, SBezierList *sbl)
{
SSurface *s;
for(s = surface.First(); s; s = surface.NextAfter(s)) {
if(s->CoincidentWithPlane(n, d)) {
s->MakeSectionEdgesInto(this, sel, sbl);
}
}
}
void StepFileWriter::ExportSurfacesTo(char *file) {
Group *g = SK.GetGroup(SS.GW.activeGroup);
SShell *shell = &(g->runningShell);
if(shell->surface.n == 0) {
Error("The model does not contain any surfaces to export.%s",
g->runningMesh.l.n > 0 ?
"\n\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();
WriteProductHeader();
ZERO(&advancedFaces);
SSurface *ss;
for(ss = shell->surface.First(); ss; ss = shell->surface.NextAfter(ss)) {
if(ss->trim.n == 0) continue;
// Get all of the loops of Beziers that trim our surface (with each
// Bezier split so that we use the section as t goes from 0 to 1), and
// the piecewise linearization of those loops in xyz space.
SBezierList sbl;
ZERO(&sbl);
ss->MakeSectionEdgesInto(shell, NULL, &sbl);
// Apply the export scale factor.
ss->ScaleSelfBy(1.0/SS.exportScale);
sbl.ScaleSelfBy(1.0/SS.exportScale);
ExportSurface(ss, &sbl);
sbl.Clear();
}
fprintf(f, "#%d=CLOSED_SHELL('',(", id);
int *af;
for(af = advancedFaces.First(); af; af = advancedFaces.NextAfter(af)) {
fprintf(f, "#%d", *af);
if(advancedFaces.NextAfter(af) != NULL) fprintf(f, ",");
}
fprintf(f, "));\n");
fprintf(f, "#%d=MANIFOLD_SOLID_BREP('brep',#%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);
WriteFooter();
fclose(f);
advancedFaces.Clear();
}