org.geotools.referencing.operation.transform

Class WarpBuilder

Object

WarpBuilder

public class WarpBuilder
extends Object

Builds Warp objects that approximate a specified MathTransform in a certain rectangular domain within the specified tolerance

Author:

Andrea Aime - GeoSolutions

Constructor Summary

Constructors

Constructor and Description
WarpBuilder(double tolerance) Creates a new warp builder

Method Summary

Modifier and Type	Method and Description
Warp	buildWarp(MathTransform2D mt, Rectangle domain)
int[]	getRowColsSplit(MathTransform2D mt, Rectangle2D.Double domain) Given a math transform and a source domain, return the number of rows and cols by which the domain should be split to avoid transform linearity issues, or null if it could not be found.
boolean	isValidDomain(Rectangle2D.Double domain) Returns true if the given domain is valid for the splitting algorithm.
void	setMaxPositions(int maxPositions) Sets the maximum number of positions in the optimized grid, in case we have more we'll fall back to the warp adapter.

Methods inherited from class Object

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

Constructor Detail

WarpBuilder

public WarpBuilder(double tolerance)

Creates a new warp builder

Method Detail

setMaxPositions

public void setMaxPositions(int maxPositions)

Sets the maximum number of positions in the optimized grid, in case we have more we'll fall back to the warp adapter. By default there is no limit

isValidDomain

public boolean isValidDomain(Rectangle2D.Double domain)

Returns true if the given domain is valid for the splitting algorithm. Can be called before getRowColsSplit to prevent exceptions. Unlike buildWarp(MathTransform2D, Rectangle) the domain here can be expressed in geographic coordinates, so there is no requirement that the area is at least 1x1 (in geographic coordiantes, that's a massive area), but only that it's not empty

Parameters:

domain - domain to check

getRowColsSplit

public int[] getRowColsSplit(MathTransform2D mt,
                             Rectangle2D.Double domain)

Given a math transform and a source domain, return the number of rows and cols by which the domain should be split to avoid transform linearity issues, or null if it could not be found.

buildWarp

public Warp buildWarp(MathTransform2D mt,
                      Rectangle domain)
               throws TransformException

Parameters:

mt - The math transform to be approximated

domain - The domain in which the transform will be approximated

Throws:

TransformException