Package ch.sahits.game.openpatrician.display.service

Class BezierPathConverter

java.lang.Object

ch.sahits.game.openpatrician.display.service.BezierPathConverter

All Implemented Interfaces:

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

public class BezierPathConverter
extends java.lang.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

Constructor Summary

Constructors

Constructor	Description
BezierPathConverter()

Method Summary

Modifier and Type	Method	Description
long	calculateDuration(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, ch.sahits.game.openpatrician.clientserverinterface.service.PathInterpolator interpolator, double fraction)
java.util.Optional<javafx.scene.shape.Path>	createPath(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel, java.util.List<javafx.geometry.Point2D> pointedPath, double scale)
java.util.List<javafx.geometry.Point2D>	reduceLinePoints(java.util.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

Constructor Detail

BezierPathConverter

public BezierPathConverter()

Method Detail

createPath

public java.util.Optional<javafx.scene.shape.Path> createPath(ch.sahits.game.openpatrician.model.ship.INavigableVessel vessel,
                                                              java.util.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

reduceLinePoints

public java.util.List<javafx.geometry.Point2D> reduceLinePoints(java.util.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 - initial point of the line

Returns:

list of points making up the path