Package org.hortonmachine.gears.utils

Class TransformationUtils

java.lang.Object

org.hortonmachine.gears.utils.TransformationUtils

public class TransformationUtils
extends Object

Utils to do transformations.

Author:

Andrea Antonello (www.hydrologis.com)

Constructor Summary

Constructors

Constructor	Description
TransformationUtils()

Method Summary

Modifier and Type	Method	Description
static org.locationtech.jts.geom.Envelope	expandToFitRatio(org.locationtech.jts.geom.Envelope original, double width, double height)	Extend an envelope to have the same ratio as the given width and height.
static AffineTransform	getPixelToWorld(Rectangle pixelRectangle, org.locationtech.jts.geom.Envelope worldEnvelope)
static org.locationtech.jts.geom.util.AffineTransformation	getRectangleToWorld(Rectangle pixelRectangle, org.locationtech.jts.geom.Envelope worldEnvelope)
static AffineTransform	getWorldToPixel(org.locationtech.jts.geom.Envelope worldEnvelope, Rectangle pixelRectangle)	Get the affine transform that brings from the world envelope to the rectangle.
static org.locationtech.jts.geom.util.AffineTransformation	getWorldToRectangle(org.locationtech.jts.geom.Envelope worldEnvelope, Rectangle pixelRectangle)	Get the affine transform that brings from the world envelope to the rectangle.
static org.locationtech.jts.geom.Envelope	scaleToHeight(org.locationtech.jts.geom.Envelope original, double newHeight)	Scale an envelope to have a given height.
static org.locationtech.jts.geom.Envelope	scaleToWidth(org.locationtech.jts.geom.Envelope original, double newWidth)	Scale an envelope to have a given width.
static org.locationtech.jts.geom.Coordinate	transformCoordinate(AffineTransform transformation, org.locationtech.jts.geom.Coordinate coordinate)
static org.locationtech.jts.geom.Envelope	transformEnvelope(AffineTransform transformation, org.locationtech.jts.geom.Envelope env)	Given a transformation, transform an envelope by it.
static org.locationtech.jts.geom.Envelope	transformEnvelope(org.locationtech.jts.geom.util.AffineTransformation transformation, org.locationtech.jts.geom.Envelope env)	Given a transformation, transform an envelope by it.

Methods inherited from class java.lang.Object

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

Constructor Detail

TransformationUtils

public TransformationUtils()

Method Detail

getWorldToPixel

public static AffineTransform getWorldToPixel(org.locationtech.jts.geom.Envelope worldEnvelope,
                                              Rectangle pixelRectangle)

Get the affine transform that brings from the world envelope to the rectangle.

Parameters:

worldEnvelope - the envelope.

pixelRectangle - the destination rectangle.

Returns:

the transform.

getPixelToWorld

public static AffineTransform getPixelToWorld(Rectangle pixelRectangle,
                                              org.locationtech.jts.geom.Envelope worldEnvelope)
                                       throws NoninvertibleTransformException

Throws:

NoninvertibleTransformException

getWorldToRectangle

public static org.locationtech.jts.geom.util.AffineTransformation getWorldToRectangle(org.locationtech.jts.geom.Envelope worldEnvelope,
                                                                                      Rectangle pixelRectangle)

Get the affine transform that brings from the world envelope to the rectangle.

Parameters:

worldEnvelope - the envelope.

pixelRectangle - the destination rectangle.

Returns:

the transform.

getRectangleToWorld

public static org.locationtech.jts.geom.util.AffineTransformation getRectangleToWorld(Rectangle pixelRectangle,
                                                                                      org.locationtech.jts.geom.Envelope worldEnvelope)
                                                                               throws org.locationtech.jts.geom.util.NoninvertibleTransformationException

Throws:

org.locationtech.jts.geom.util.NoninvertibleTransformationException

scaleToWidth

public static org.locationtech.jts.geom.Envelope scaleToWidth(org.locationtech.jts.geom.Envelope original,
                                                              double newWidth)

Scale an envelope to have a given width.

Parameters:

original - the envelope.

newWidth - the new width to use.

Returns:

the scaled envelope placed in the original lower left corner position.

scaleToHeight

public static org.locationtech.jts.geom.Envelope scaleToHeight(org.locationtech.jts.geom.Envelope original,
                                                               double newHeight)

Scale an envelope to have a given height.

Parameters:

original - the envelope.

newHeight - the new height to use.

Returns:

the scaled envelope placed in the original lower left corner position.

expandToFitRatio

public static org.locationtech.jts.geom.Envelope expandToFitRatio(org.locationtech.jts.geom.Envelope original,
                                                                  double width,
                                                                  double height)

Extend an envelope to have the same ratio as the given width and height.

Parameters:

original - the envelope.

width - the reference width.

height - the reference height.

Returns:

the extended envelope, centered on the original one.

transformEnvelope

public static org.locationtech.jts.geom.Envelope transformEnvelope(AffineTransform transformation,
                                                                   org.locationtech.jts.geom.Envelope env)

Given a transformation, transform an envelope by it.

Parameters:

transformation - the AffineTransform to use.

env - the envelope to transform.

Returns:

the transformed envelope.

transformCoordinate

public static org.locationtech.jts.geom.Coordinate transformCoordinate(AffineTransform transformation,
                                                                       org.locationtech.jts.geom.Coordinate coordinate)

transformEnvelope

public static org.locationtech.jts.geom.Envelope transformEnvelope(org.locationtech.jts.geom.util.AffineTransformation transformation,
                                                                   org.locationtech.jts.geom.Envelope env)

Given a transformation, transform an envelope by it.

Parameters:

transformation - the AffineTransformation to use.

env - the envelope to transform.

Returns:

the transformed envelope.