GeoStream class

Streams have several function-properties that are called to transform an input geometry.

No materializations of intermediate representations are made, which minimizes overhead. Streams are inherently stateful; the meaning of a point depends on whether the point is inside of a line, and likewise a line is distinguished from a ring by a polygon. Despite the name “stream”, these method calls are currently synchronous.

Implementers

• GeoPathContext

Constructors

GeoStream({void point(List<num>) = noop, void sphere() = noop, void lineStart() = noop, void lineEnd() = noop, void polygonStart() = noop, void polygonEnd() = noop})

Properties

hashCode → int

The hash code for this object.

no setter, inherited

lineEnd ↔ void Function()

Indicates the end of a line or ring. Within a polygon, indicates the end of a ring.

getter/setter pair

lineStart ↔ void Function()

Indicates the start of a line or ring. Within a polygon, indicates the start of a ring.

getter/setter pair

point ↔ void Function(List<num>)

Indicates a point with the specified coordinates [x, y, (and optionally z)].

getter/setter pair

polygonEnd ↔ void Function()

Indicates the end of a polygon.

getter/setter pair

polygonStart ↔ void Function()

Indicates the start of a polygon. The first line of a polygon indicates the exterior ring, and any subsequent lines indicate interior holes.

getter/setter pair

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

sphere ↔ void Function()

Indicates the sphere (the globe; the unit sphere centered at ⟨0,0,0⟩).

getter/setter pair

Methods

call(Map? object) → void

Streams the specified GeoJSON object.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited