/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.filter.visitor;
import java.util.List;
import org.opengis.annotation.XmlElement;
import org.opengis.filter.expression.Expression;
import org.opengis.filter.expression.Function;
/**
* Interpolation: Transformation of continuous values by a function defined on a
* number of nodes. This is used to adjust the value distribution of an attribute to the
* desired distribution of a continuous symbolization control variable (like size,
* width, color, etc).
*
* In case the Categorize (or Interpolate) function is used inside a RasterSymbolizer as a
* ColorMap, the LookupValue is set to the fixed value “Rasterdata”.
*
*
* @source $URL$
* @version <A HREF="http://www.opengeospatial.org/standards/symbol">Symbology Encoding Implementation Specification 1.1.0</A>
* @author Johann Sorel (Geomatys)
*/
@XmlElement("Interpolate")
public interface Interpolate extends Function{
/**
* Get lookup value.
*
* @return Expression
*/
@XmlElement("LookupValue")
Expression getLookupValue();
/**
* See {@link InterpolationPoint} for details.
*/
List<InterpolationPoint> getInterpolationPoints();
/**
* Get the interpolation mode.
*
* @return LINEAR, COSINE or CUBIC.
*/
@XmlElement("Mode")
Mode getMode();
/**
* Get the interpolation method.
*
* @return NUMERIC or COLOR
*/
@XmlElement("Method")
Method getMethod();
}