ch.sahits.game.graphic.service

Class BezierPathConverter

java.lang.Object

ch.sahits.game.graphic.service.BezierPathConverter

All Implemented Interfaces:

ch.sahits.game.openpatrician.engine.sea.IPathConverter

public class BezierPathConverter
extends Object
implements ch.sahits.game.openpatrician.engine.sea.IPathConverter

Create a Bezier path based on a set of points. The implementation is based on work described in http://devmag.org.za/2011/06/23/bzier-path-algorithms/

Author:

Andi Hotz, (c) Sahits GmbH, 2016 Created on Jan 05, 2016

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	BezierPathConverter.Distances

Field Summary

Fields

Modifier and Type	Field and Description
private ch.sahits.game.openpatrician.model.Date	date
private ch.sahits.game.openpatrician.clientserverinterface.model.PathInterpolatorMap	interpolators
private org.apache.logging.log4j.Logger	logger
private IMapImageServiceFacade	mapImageService
private ch.sahits.game.openpatrician.clientserverinterface.service.MapService	mapService
private ch.sahits.game.openpatrician.model.sea.TravellingVessels	vessels

Constructor Summary

Constructors

Constructor and Description
BezierPathConverter()

Method Summary

Modifier and Type	Method and Description
private List<javafx.geometry.Point2D>	applyScale(List<javafx.geometry.Point2D> pointedPath, double scale)
long	calculateDuration(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, ch.sahits.game.openpatrician.clientserverinterface.service.PathInterpolator interpolator, double fraction)
private BezierPath	convertToPathModel(List<javafx.geometry.Point2D> points)
Optional<javafx.scene.shape.Path>	createPath(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, List<javafx.geometry.Point2D> pointedPath, double scale)
(package private) List<javafx.geometry.Point2D>	interpolate(List<javafx.geometry.Point2D> segmentPoints, float scale) Calculate the controlpoints for a given list of points on the curve.
List<javafx.geometry.Point2D>	reduceLinePoints(List<javafx.geometry.Point2D> initialPoints) Reduce the number of points that are needed to describe the path.

Methods inherited from class java.lang.Object

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

Field Detail

logger

private final org.apache.logging.log4j.Logger logger

mapImageService

@Autowired
private IMapImageServiceFacade mapImageService

vessels

@Autowired
private ch.sahits.game.openpatrician.model.sea.TravellingVessels vessels

interpolators

@Autowired
private ch.sahits.game.openpatrician.clientserverinterface.model.PathInterpolatorMap interpolators

date

@Autowired
private ch.sahits.game.openpatrician.model.Date date

mapService

@Autowired
private ch.sahits.game.openpatrician.clientserverinterface.service.MapService mapService

Constructor Detail

BezierPathConverter

public BezierPathConverter()

Method Detail

createPath

public Optional<javafx.scene.shape.Path> createPath(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                                    List<javafx.geometry.Point2D> pointedPath,
                                                    double scale)

Specified by:

createPath in interface ch.sahits.game.openpatrician.engine.sea.IPathConverter

calculateDuration

public long calculateDuration(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                              ch.sahits.game.openpatrician.clientserverinterface.service.PathInterpolator interpolator,
                              double fraction)

Specified by:

calculateDuration in interface ch.sahits.game.openpatrician.engine.sea.IPathConverter

applyScale

private List<javafx.geometry.Point2D> applyScale(List<javafx.geometry.Point2D> pointedPath,
                                                 double scale)

interpolate

List<javafx.geometry.Point2D> interpolate(List<javafx.geometry.Point2D> segmentPoints,
                                          float scale)

Calculate the controlpoints for a given list of points on the curve.

Parameters:

segmentPoints - List of points that make up the curve

scale - to be used for the length of the handles

Returns:

List of controlpoints including the points on the line.

convertToPathModel

private BezierPath convertToPathModel(List<javafx.geometry.Point2D> points)

reduceLinePoints

public List<javafx.geometry.Point2D> reduceLinePoints(List<javafx.geometry.Point2D> initialPoints)

Reduce the number of points that are needed to describe the path. Points that do not change the direction of the path can be eliminated if:

• The distance to the last point left is larger than the distance to the shore

Specified by:

reduceLinePoints in interface ch.sahits.game.openpatrician.engine.sea.IPathConverter

Parameters:

initialPoints -

Returns: