Package ch.sahits.game.graphic.image.impl

Class PolygonScaling

java.lang.Object

ch.sahits.game.graphic.image.impl.PolygonScaling

All Implemented Interfaces:

IPolygonScaling

@Service
public class PolygonScaling
extends java.lang.Object
implements IPolygonScaling

Implementation class for recalculating poligons of a scaled, bordered and cropped image and on the absolute positioning of that image on the screen.

Author:

Andi Hotz, (c) Sahits GmbH, 2012 Created on Jul 1, 2012

Constructor Summary

Constructors

Constructor	Description
PolygonScaling()

Method Summary

Modifier and Type	Method	Description
private ImageData	createNewCopy(ImageData imgData)	Create a clone of the image data and handle the CloneNotSupportedException
(package private) ImageData	recalculatePolygonCrop(ImageData imgData, ImageScaleState state)	Compute the polygon affected by the cropping of the image as stated in state
ImageData	recalculatePolygons(ImageData imgData, ImageScaleState state)	Compute the location and dimensions of the NamedPolygons that are contained in imgData based on the scaling state.
(package private) ImageData	recalculatePolygonScale(ImageData imgData, ImageScaleState state)	Compute the polygon affected by the scaling of the image as stated in state
ImageData	recalculatePolygonsOffset(ImageData imgData, javafx.geometry.Point2D offset)	Recalculate the positions of the polygons to reflect their absolute on screen locations.
(package private) void	updateCoordinate(NamedPolygon poly, double factor)	Update the x and y coordinate of each point within the polygon by factor
(package private) void	updateCoordinates(NamedPolygon poly, double diffX, double diffY)	Update the coordinates of the polygon by the specified values in x and y direction
(package private) void	updateXCoordinate(NamedPolygon poly, int amount)	Update the x coordinate of each point within the polygon by amount
(package private) void	updateYCoordinate(NamedPolygon poly, int amount)	Update the y coordinate of each point within the polygon by amount

Methods inherited from class java.lang.Object

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

Constructor Detail

PolygonScaling

public PolygonScaling()

Method Detail

recalculatePolygons

public ImageData recalculatePolygons(ImageData imgData,
                                     ImageScaleState state)

Description copied from interface: IPolygonScaling

Compute the location and dimensions of the NamedPolygons that are contained in imgData based on the scaling state. If the image was cropped or bordered this may result in a translocation of the defined polygon. If the image was scaled this will result in a translocation to or from the origin (top left corner) by the factor of the scaling. A new instance of image Data with the new polygon definition will be returned.

Specified by:

recalculatePolygons in interface IPolygonScaling

Parameters:

imgData - Input data of the image containing a list of NamedPolygons that are to be recalculated

state - of the scaled image

Returns:

new instance of ImageData containing the recalculated polygons

recalculatePolygonsOffset

public ImageData recalculatePolygonsOffset(ImageData imgData,
                                           javafx.geometry.Point2D offset)

Description copied from interface: IPolygonScaling

Recalculate the positions of the polygons to reflect their absolute on screen locations.

Specified by:

recalculatePolygonsOffset in interface IPolygonScaling

Parameters:

imgData - Input data of the image containing a list of NamedPolygons that are to be recalculated

offset - Point indicating the absolute position on screen of the origin (top left corner) of the image

Returns:

new instance of ImageData containing the recalculated polygons

recalculatePolygonCrop

final ImageData recalculatePolygonCrop(ImageData imgData,
                                       ImageScaleState state)

Compute the polygon affected by the cropping of the image as stated in state

Parameters:

imgData - Input data of the image containing a list of NamedPolygons that are to be recalculated

state - of the scaled image

Returns:

new instance of ImageData containing the recalculated polygons

createNewCopy

private ImageData createNewCopy(ImageData imgData)

Create a clone of the image data and handle the CloneNotSupportedException

Parameters:

imgData - image data

Returns:

copy of the image data

recalculatePolygonScale

final ImageData recalculatePolygonScale(ImageData imgData,
                                        ImageScaleState state)

Compute the polygon affected by the scaling of the image as stated in state

Parameters:

imgData - Input data of the image containing a list of NamedPolygons that are to be recalculated

state - of the scaled image

Returns:

new instance of ImageData containing the recalculated polygons

updateCoordinates

void updateCoordinates(NamedPolygon poly,
                       double diffX,
                       double diffY)

Update the coordinates of the polygon by the specified values in x and y direction

Parameters:

poly - polygon to be updated

diffX - difference in x direction

diffY - difference in y direction

updateXCoordinate

void updateXCoordinate(NamedPolygon poly,
                       int amount)

Update the x coordinate of each point within the polygon by amount

Parameters:

poly - polygon to be updated

amount - the X-coordinate is to be translated

updateYCoordinate

void updateYCoordinate(NamedPolygon poly,
                       int amount)

Update the y coordinate of each point within the polygon by amount

Parameters:

poly - polygon to be updated

amount - the Y-coordinate is to be translated

updateCoordinate

void updateCoordinate(NamedPolygon poly,
                      double factor)

Update the x and y coordinate of each point within the polygon by factor

Parameters:

poly - polygon to be updated

factor - that is to be multiplied with each coordinate