CGAL 5.5 - 2D Arrangements
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Operations | |
CGAL::Arr_parameter_space | operator() (const ArrTraits::X_monotone_curve_2 &xcv, CGAL::Arr_curve_end ce) |
Given an \(x\)-monotone curve xcv and an enumeration ce that specifies either the minimum or the maximum end of the curve, determines the location of the curve end along the \(y\)-dimension. More... | |
CGAL::Arr_parameter_space ArrTraits::ParameterSpaceInY_2::operator() | ( | const ArrTraits::X_monotone_curve_2 & | xcv, |
CGAL::Arr_curve_end | ce | ||
) |
Given an \(x\)-monotone curve xcv
and an enumeration ce
that specifies either the minimum or the maximum end of the curve, determines the location of the curve end along the \(y\)-dimension.
The variable xcv
identifies the parametric curve \(c(t) = (x(t),y(t))\) defined over an open or half-open interval with endpoints \( 0\) and \(1\). The enumeration ce
identifies an open end \(d \in\{0,1\}\) of \(c\). Formally, determines whether \(\lim_{t \rightarrow d} y(t)\) evaluates to \(b_b\), \(b_t\), or a value in between, where \(b_b\) and \(b_t\) are the \(y\)-coordinates of the bottom and top boundaries of the parameter space, respectively. Returns CGAL::ARR_BOTTOM_BOUNDARY
, CGAL::ARR_TOP_BOUNDARY
, or CGAL::ARR_INTERIOR
, accordingly.
ArrTraits::Bottom_side_category
is convertible to CGAL::Arr_oblivious_side_tag
then the result is not CGAL::ARR_BOTTOM_BOUNDARY
.ArrTraits::Top_side_category
is convertible to CGAL::Arr_oblivious_side_tag
then the result is not CGAL::ARR_TOP_BOUNDARY
.