Package org.openstreetmap.josm.data.imagery.vectortile.mapbox

Class Geometry

java.lang.Object

org.openstreetmap.josm.data.imagery.vectortile.mapbox.Geometry

public class Geometry
extends java.lang.Object

A class to generate geometry for a vector tile

Since:

17862

Field Summary

Fields

Modifier and Type	Field	Description
(package private) java.util.Collection<java.awt.Shape>	shapes

Constructor Summary

Constructors

Constructor	Description
Geometry(GeometryTypes geometryType, java.util.List<CommandInteger> commands)	Create a Geometry for a Feature

Method Summary

Modifier and Type	Method	Description
(package private) static double	calculateSurveyorsArea(int[] xArray, int[] yArray)	This is also known as the "shoelace formula".
java.util.Collection<java.awt.Shape>	getShapes()	Get the shapes to draw this geometry with
private void	initializePoints(GeometryTypes geometryType, java.util.List<CommandInteger> commands)	Initialize point geometry
private void	initializeWayGeometry(GeometryTypes geometryType, java.util.List<CommandInteger> commands)	Initialize way geometry

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

shapes

final java.util.Collection<java.awt.Shape> shapes

Constructor Detail

Geometry

public Geometry(GeometryTypes geometryType,
                java.util.List<CommandInteger> commands)

Create a Geometry for a Feature

Parameters:

geometryType - The type of geometry

commands - The commands used to create the geometry

Throws:

java.lang.IllegalArgumentException - if arguments are not understood or if the shoelace formula returns 0 for a polygon ring.

Method Detail

initializePoints

private void initializePoints(GeometryTypes geometryType,
                              java.util.List<CommandInteger> commands)

Initialize point geometry

Parameters:

geometryType - The geometry type (used for logging)

commands - The commands to use to create the geometry

initializeWayGeometry

private void initializeWayGeometry(GeometryTypes geometryType,
                                   java.util.List<CommandInteger> commands)

Initialize way geometry

Parameters:

geometryType - The geometry type

commands - The commands to use to create the geometry

calculateSurveyorsArea

static double calculateSurveyorsArea(int[] xArray,
                                     int[] yArray)

This is also known as the "shoelace formula".

Parameters:

xArray - The array of x coordinates

yArray - The array of y coordinates

Returns:

The area of the object

Throws:

java.lang.IllegalArgumentException - if the array lengths are not equal

getShapes

public java.util.Collection<java.awt.Shape> getShapes()

Get the shapes to draw this geometry with

Returns:

A collection of shapes