Geo::Space

INHERITANCE

 Geo::Space
   is a Geo::Shape

SYNOPSIS

 my $island1 = Geo::Line->filled(...);
 my $island2 = Geo::Space->new(...);
 my $islands = Geo::Space->new($island1, $island2)

DESCRIPTION

Where a Geo::Surface can only contains sets of nested polygons, the Space can contain anything you like: lines, points, and unrelated polygons.

METHODS

Constructors

$obj->new([COMPONENTS], [OPTIONS])

Geo::Space->new([COMPONENTS], [OPTIONS])

When called as instance method, some defaults are copied from the object where the call is made upon. Usually called as class method.

COMPONENTS are Math::Polygon, Math::Polygon::Surface, Geo::Point, Geo::Line, Geo::Surface, Geo::Space objects.

 -Option--Defined in--Default
  proj    Geo::Shape  see Geo::Proj::defaultProjection()

proj => LABEL

Attributes

$obj->component(INDEX, [INDEX, ...]): Returns the component (or components) with the specified INDEX(es). One Geo::Shape object in scalar context, and multiple in list context.
$obj->components(): Returns a list of Geo::Shape objects, all located in this space.
$obj->lines(): Returns a list of Geo::Line objects, which are defined as separate components.
$obj->nrComponents(): Returns the number of components.
$obj->onlyLines(): Returns true when all components are lines; Geo::Line objects.
$obj->onlyPoints(): Returns true when all components are points; Geo::Point objects.
$obj->onlyRings(): Returns true when all components are closed lines; Geo::Line objects each defined as ring.
$obj->points(): Returns a list of Geo::Point objects, which are defined as separate components.
$obj->proj(): See "Attributes" in Geo::Shape
$obj->proj4(): See "Attributes" in Geo::Shape

Projections

$obj->in(LABEL|'utm'): See "Projections" in Geo::Shape
$obj->projectOn(NICK, POINTS): See "Projections" in Geo::Shape

Geometry

$obj->area(): Returns the area enclosed by the combined components. Only useful when the points are in some orthogonal projection.
$obj->bbox(): See "Geometry" in Geo::Shape
$obj->bboxCenter(): See "Geometry" in Geo::Shape
$obj->bboxRing([XMIN, YMIN, XMAX, YMAX, [PROJ]])
Geo::Space->bboxRing([XMIN, YMIN, XMAX, YMAX, [PROJ]]): See "Geometry" in Geo::Shape
$obj->distance(OBJECT, [UNIT]): See "Geometry" in Geo::Shape
$obj->perimeter(): The length of the outer polygons of all components. Only useful in a orthogonal coordinate systems.

Display

$obj->deg2dm(DEGREES, POS, NEG)
Geo::Space->deg2dm(DEGREES, POS, NEG): See "Display" in Geo::Shape
$obj->deg2dms(DEGREES, POS, NEG)
Geo::Space->deg2dms(DEGREES, POS, NEG): See "Display" in Geo::Shape
$obj->dms2deg(DMS)
Geo::Space->dms2deg(DMS): See "Display" in Geo::Shape
$obj->toString([PROJECTION]): Returns a string representation of the line, which is also used for stringification.
example:

OVERLOAD

overload: '""' (stringification)(): See "OVERLOAD" in Geo::Shape
overload: 'bool' (truth value)(): See "OVERLOAD" in Geo::Shape

DIAGNOSTICS

Error: distance calculation not implemented between a $kind and a $kind: Only a subset of all objects can be used in the distance calculation. The limitation is purely caused by lack of time to implement this.
Error: in() not implemented for a $class

LICENSE

Copyrights 2005-2012 by [Mark Overmeer]. For other contributors see ChangeLog.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See http://www.perl.com/perl/misc/Artistic.html

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