inline void assign_box_corners_oriented(Box const& box, Range& corners)
{
if (Reverse)
{
// make counterclockwise ll,lr,ur,ul
assign_box_corners(box, corners[0], corners[1], corners[3], corners[2]);
}
else
{
// make clockwise ll,ul,ur,lr
assign_box_corners(box, corners[0], corners[3], corners[1], corners[2]);
}
}
static inline void apply(Box const& box,
SegmentIdentifier const& seg_id, int to_index,
RangeOut& current_output)
{
// Convert again...
// TODO: avoid that...
typedef typename point_type<Box>::type point_type;
point_type ll, lr, ul, ur;
assign_box_corners(box, ll, lr, ul, ur);
std::vector<point_type> points;
points.push_back(ll);
points.push_back(ul);
points.push_back(ur);
points.push_back(lr);
points.push_back(ll);
copy_segments_ring
<
std::vector<point_type>,
SegmentIdentifier,
RangeOut
>
::apply(points, seg_id, to_index, current_output);
}
inline void assign_box_corners_oriented(Box const& box, Range& corners)
{
if (Reverse)
{
// make counterclockwise ll,lr,ur,ul
assign_box_corners(box,
range::at(corners, 0), range::at(corners, 1),
range::at(corners, 3), range::at(corners, 2));
}
else
{
// make clockwise ll,ul,ur,lr
assign_box_corners(box,
range::at(corners, 0), range::at(corners, 3),
range::at(corners, 1), range::at(corners, 2));
}
}
static inline void apply(Collection& collection, Box const& box)
{
typename point_type<Box>::type lower_left, lower_right,
upper_left, upper_right;
assign_box_corners(box, lower_left, lower_right,
upper_left, upper_right);
typedef typename boost::range_value<Collection>::type item;
collection.push_back(item(get<0>(lower_left), get<1>(lower_left), 0, 1));
collection.push_back(item(get<0>(upper_left), get<1>(upper_left), 1, 0));
collection.push_back(item(get<0>(upper_right), get<1>(upper_right), 0, -1));
collection.push_back(item(get<0>(lower_right), get<1>(lower_right), -1, 0));
}
static inline bool apply(Box const& box,
SegmentIdentifier const& seg_id, bool second,
PointOut& point)
{
int index = seg_id.segment_index;
if (second)
{
index++;
}
PointOut ll, lr, ul, ur;
assign_box_corners(box, ll, lr, ul, ur);
switch(index)
{
case 1 : point = ul; break;
case 2 : point = ur; break;
case 3 : point = lr; break;
default : // 0,4 or 'overflow'
point = ll; break;
}
return true;
}
