NAME

Geo::Geos::Noding::SegmentIntersectionDetector - Detects and records an intersection between two SegmentStrings, if one exists.

SYNOPSIS

use Geo::Geos::Algorithm::LineIntersector;
use Geo::Geos::Coordinate;
use Geo::Geos::PrecisionModel;
use Geo::Geos::Noding::NodedSegmentString;
use Geo::Geos::Noding::SegmentIntersectionDetector;

my $c1 = Geo::Geos::Coordinate->new(0,1);
my $c2 = Geo::Geos::Coordinate->new(2,1);
my $c3 = Geo::Geos::Coordinate->new(1,0);
my $c4 = Geo::Geos::Coordinate->new(1,2);
my $pm = Geo::Geos::PrecisionModel->new;

my $ss1 = Geo::Geos::Noding::NodedSegmentString->new([$c1, $c2]);
my $ss2 = Geo::Geos::Noding::NodedSegmentString->new([$c3, $c4]);

my $li = Geo::Geos::Algorithm::LineIntersector->new($pm);

my $sid = Geo::Geos::Noding::SegmentIntersectionDetector->new($li);  # => isa 'Geo::Geos::Noding::SegmentIntersectionDetector'
Geo::Geos::Noding::SegmentIntersectionDetector->new($li);            # => isa 'Geo::Geos::Noding::SegmentIntersector'

my $r1 = $sid->isDone;       # => ''

$sid->processIntersections($ss1, 0, $ss2, 0);
my $r2 = $sid->isDone;       # => success

my $c_1 = $sid->getIntersection;                  # => Geo::Geos::Coordinate->new(1,1)
my $c_2 = $sid->getIntersectionSegments->[0];     # => isa 'Geo::Geos::Coordinate'

my $r3 = $sid->hasProperIntersection;        # => success
my $r4 = $sid->hasNonProperIntersection;     # => ''

SEE ALSO (C++ classes docs)

GEOS C++ Library

geos::noding::SegmentIntersectionDetector

SEE ALSO

Geo::Geos

Geo::Geos::Algorithm::LineIntersector

Geo::Geos::Noding::NodedSegmentString

Geo::Geos::Noding::SegmentIntersector

AUTHOR

Ivan Baidakou <i.baydakov@crazypanda.ru>, Crazy Panda, CP Decision LTD

LICENSE

You may distribute this code under the same terms as Perl itself.