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Cleaned up

This commit is contained in:
Efi Fogel 2021-03-25 12:53:48 +02:00
parent a4a2dba619
commit 2d1e009209
1 changed files with 14 additions and 13 deletions
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27
Arrangement_on_surface_2/include/CGAL/Arr_topology_traits/Arr_spherical_construction_helper.h
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@ -185,22 +185,24 @@ before_handle_event(Event* event)
if (event->is_isolated()) return;
// Comment: In the sweep-line event order the events of poles belong to the left and right
// boundary. However, here the vertices of the poles are identified by the
// event's trais to belong to the bottom and top boundary.
// In the sweep-line event order the events of poles belong to the left and
// right boundary. However, here the vertices of the poles are identified by
// the event's trais to belong to the bottom and top boundary.
if (ps_y == ARR_BOTTOM_BOUNDARY /* subsumes LEFT-BOTTOM and RIGHT-BOTTOM corner */) {
if (ps_y == ARR_BOTTOM_BOUNDARY) {
/* subsumes LEFT-BOTTOM and RIGHT-BOTTOM corner */
// Process a non-isolated event on the bottom contracted boundary.
// If a vertex on the south pole does not exists, create one.
DVertex* dv = m_top_traits->south_pole();
Vertex_handle v =
(dv) ? Vertex_handle(dv) : m_arr_access.create_boundary_vertex(event->point(), ps_x, ps_y);
Vertex_handle v = (dv) ? Vertex_handle(dv) :
m_arr_access.create_boundary_vertex(event->point(), ps_x, ps_y);
event->set_vertex_handle(v);
return;
}
if (ps_y == ARR_TOP_BOUNDARY /* subsumes LEFT-TOP and RIGHT-TOP corner */) {
if (ps_y == ARR_TOP_BOUNDARY) {
/* subsumes LEFT-TOP and RIGHT-TOP corner */
// Process a non-isolated event on the top contracted boundary.
// The process is more complicated than for the bottom boundary,
// as the touching the top boundary influences the list of
@ -253,20 +255,19 @@ before_handle_event(Event* event)
// If a vertex on the line of discontinuity does not exists, create one.
DVertex* dv = m_top_traits->discontinuity_vertex(event->point());
Vertex_handle v =
(dv) ? Vertex_handle(dv) : m_arr_access.create_boundary_vertex(event->point(), ps_x, ps_y);
Vertex_handle v = (dv) ? Vertex_handle(dv) :
m_arr_access.create_boundary_vertex(event->point(), ps_x, ps_y);
event->set_vertex_handle(v);
return;
}
if (ps_x == ARR_RIGHT_BOUNDARY) {
// Process a non-isolated event on the right identified boundary.
// Note: cannnot be vertical, only curves approaching the right side are possible.
// Cannnot be vertical, only curves approaching the right side are possible.
// If a vertex on the line of discontinuity does not exists, create one.
DVertex* dv = m_top_traits->discontinuity_vertex(event->point());
Vertex_handle v =
(dv) ? Vertex_handle(dv) : m_arr_access.create_boundary_vertex(event->point(), ps_x, ps_y);
Vertex_handle v = (dv) ? Vertex_handle(dv) :
m_arr_access.create_boundary_vertex(event->point(), ps_x, ps_y);
event->set_vertex_handle(v);
return;
}