Function project_onto_curve

src/ifcgeom/taxonomy.cpp:817–820

	}

	double project_onto_curve(const circle::ptr& c, const point3& p) {
		Eigen::Vector2d xy = (c->matrix->ccomponents().inverse() * p.ccomponents().homogeneous()).head<2>();
		return std::atan2(xy(1), xy(0));
	}
}