GeometryUtils Class Reference

A set of functions for working with geometries. More...

Inherits Finalizable.

Static Public Member Functions
static double	distanceBetweenGlobalPoints (GlobalPoint from, GlobalPoint to)
	Get distance between GPS points.
static double	distanceBetweenPoints (Point from, Point to)
	Get distance between points.
static double	segmentLength (Segment segment)
	Get length of segment.
static double	polygonArea (Polygon polygon)
	Get polygon area.
static Point	polygonCenter (Polygon polygon)
	Get polygon geometric center.
static bool	polygonContainsPoint (Polygon polygon, Point point)
	Checks that polygon contains point.
static double	segmentPointDistance (Segment segment, Point point)
	Get distance from segment to point.
static bool	segmentIntersectsSegment (Segment segment1, Segment segment2)
	Checks the intersection of two segments.
static Point	segmentIntersectionSegment (Segment segment1, Segment segment2)
	Calculate the intersection point of two segments.
static double	divisionRatioBySegment (Segment segment1, Segment segment2)
	Calculate the division ratio of a segment by a given segment(if intersects)
static Point	getRatioPoint (Segment segment, double r)
	Calculate projection point on a segment.
static double	getProjectionRatio (Segment segment, Point point)
	Calculate the division ratio of a segment by a given point Calculate projection point on a segment.

Detailed Description

A set of functions for working with geometries.

Definition at line 23 of file geometry_utils.dart.

Member Function Documentation

distanceBetweenGlobalPoints()

static double GeometryUtils.distanceBetweenGlobalPoints ( GlobalPoint from, GlobalPoint to )

static

Get distance between GPS points.

Parameters

from	start point of calculation GlobalPoint
to	end point of calculation GlobalPoint

Returns

distance in meters

distanceBetweenPoints()

static double GeometryUtils.distanceBetweenPoints ( Point from, Point to )

static

Get distance between points.

Parameters

from	start point of calculation Point
to	end point of calculation Point

Returns

distance in meters

divisionRatioBySegment()

static double GeometryUtils.divisionRatioBySegment ( Segment segment1, Segment segment2 )

static

Calculate the division ratio of a segment by a given segment(if intersects)

Parameters

segment1	first segment of calculation Segment
segment2	second segment of calculation Segment

Returns

division ratio

getProjectionRatio()

static double GeometryUtils.getProjectionRatio ( Segment segment, Point point )

static

Calculate the division ratio of a segment by a given point Calculate projection point on a segment.

Parameters

segment	segment of calculation Segment
point	point of calculation Point

Returns

division ratio

getRatioPoint()

static Point GeometryUtils.getRatioPoint ( Segment segment, double r )

static

Calculate projection point on a segment.

Parameters

segment	segment of calculation Segment
r	division ratio

Returns

ratio point Point

polygonArea()

static double GeometryUtils.polygonArea ( Polygon polygon )

static

Get polygon area.

Parameters

polygon

polygon object for calculation Polygon

Returns

area in meters

polygonCenter()

static Point GeometryUtils.polygonCenter ( Polygon polygon )

static

Get polygon geometric center.

Parameters

polygon

polygon object for calculation Polygon

Returns

center point Point

polygonContainsPoint()

static bool GeometryUtils.polygonContainsPoint ( Polygon polygon, Point point )

static

Checks that polygon contains point.

Parameters

polygon	polygon object in which looking for contents Polygon
point	checking point object Point

Returns

contains or not

segmentIntersectionSegment()

static Point GeometryUtils.segmentIntersectionSegment ( Segment segment1, Segment segment2 )

static

Calculate the intersection point of two segments.

Parameters

segment1	first segment of calculation Segment
segment2	second segment of calculation Segment

Returns

intersection point Point

segmentIntersectsSegment()

static bool GeometryUtils.segmentIntersectsSegment ( Segment segment1, Segment segment2 )

static

Checks the intersection of two segments.

Parameters

segment1	first segment of calculation Segment
segment2	second segment of calculation Segment

Returns

intersects or not

segmentLength()

static double GeometryUtils.segmentLength ( Segment segment )

static

Get length of segment.

Parameters

segment

segment object for calculation Segment

Returns

length in meters

segmentPointDistance()

static double GeometryUtils.segmentPointDistance ( Segment segment, Point point )

static

Get distance from segment to point.

Parameters

segment	start segment of calculation Segment
point	end point of calculation Point

Returns

distance in meters

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The documentation for this class was generated from the following file:

• geometry_utils.dart