mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-09 17:31:45 +00:00
Thomas Krijnen
33 lines
1.0 KiB
C++
33 lines
1.0 KiB
C++
#ifdef IFOPSH_WITH_CGAL
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#include "validation_utils.h"
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double facet_area(const cgal_shape_t::Facet_handle& f) {
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auto p0 = f->facet_begin()->vertex()->point();
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auto p1 = f->facet_begin()->next()->vertex()->point();
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auto p2 = f->facet_begin()->next()->next()->vertex()->point();
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return std::sqrt(CGAL::to_double(CGAL::cross_product(p0 - p1, p2 - p1).squared_length()));
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}
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void dump_facet(const cgal_shape_t::Facet_handle& f) {
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auto p0 = f->facet_begin()->vertex()->point();
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auto p1 = f->facet_begin()->next()->vertex()->point();
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auto p2 = f->facet_begin()->next()->next()->vertex()->point();
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auto V = CGAL::cross_product(p0 - p1, p2 - p1);
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auto d = std::sqrt(CGAL::to_double(V.squared_length()));
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if (d > 1.e-20) {
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V /= d;
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}
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std::ostringstream oss;
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oss.precision(8);
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oss << "Facet with area " << facet_area(f) << " and normal ("
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<< CGAL::to_double(V.cartesian(0)) << " " << CGAL::to_double(V.cartesian(1)) << " "
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<< CGAL::to_double(V.cartesian(2)) << ")";
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auto osss = oss.str();
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std::wcout << osss.c_str() << std::endl;
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}
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#endif
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