Class: HCoordinate

jsts.algorithm.HCoordinate

new HCoordinate()

Represents a homogeneous coordinate in a 2-D coordinate space. In JTS HCoordinates are used as a clean way of computing intersections between line segments. Will call correct init* function depending on argument.
Source:

Methods

(static) intersection(p1, p2, q1, q2) → {jsts.geom.Coordinate}

Computes the (approximate) intersection point between two line segments using homogeneous coordinates.

Note that this algorithm is not numerically stable; i.e. it can produce intersection points which lie outside the envelope of the line segments themselves. In order to increase the precision of the calculation input points should be normalized before passing them to this routine.

Parameters:
Name Type Description
p1 jsts.geom.Coordinate first coordinate for the first line.
p2 jsts.geom.Coordinate second coordinate for the first line.
q1 jsts.geom.Coordinate first coordinate for the second line.
q2 jsts.geom.Coordinate second coordinate for the second line.
Source:
Returns:
The coordinate of the intersection.
Type
jsts.geom.Coordinate

getCoordinate() → {jst.geom.Coordinate}

Gets a coordinate represented by this HCoordinate
Source:
Returns:
The coordinate.
Type
jst.geom.Coordinate

getX() → {Number}

Gets x/w
Source:
Returns:
x/w.
Type
Number

getY() → {Number}

Gets y/w
Source:
Returns:
y/w.
Type
Number

initFrom1Coordinate(p)

Initializes a new HCoordinate from 1 Coordinate
Parameters:
Name Type Description
p jsts.geom.Coordinate the coordinate.
Source:

initFrom2Coordinates(p1, p2)

Constructs a homogeneous coordinate which is the intersection of the lines define by the homogenous coordinates represented by two Coordinates.
Parameters:
Name Type Description
p1 jsts.geom.Coordinate the first coordinate.
p2 jsts.geom.Coordinate the second coordinate.
Source:

initFrom2HCoordinates(p1, p2)

Initializes from 2 HCoordinates
Parameters:
Name Type Description
p1 jsts.algorithm.HCoordinate the first HCoordinate.
p2 jsts.algorithm.HCoordinate the second HCoordinate.
Source:

initFrom4Coordinates(p1, p2, q1, q2)

Initializes from 4 Coordinates
Parameters:
Name Type Description
p1 jsts.geom.Coordinate the first coordinate.
p2 jsts.geom.Coordinate the second coordinate.
q1 jsts.geom.Coordinate the first coordinate.
q2 jsts.geom.Coordinate the second coordinate.
Source:

initFromXY(x, y)

Initializes from x,y
Parameters:
Name Type Description
x Number the x-value.
y Number the y-value.
Source:

initFromXYW(x, y, w)

Initializes from x,y,w
Parameters:
Name Type Description
x Number the x-value.
y Number the y-value.
w Number the w-value.
Source: