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/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 *
 *    (C) 2011, Open Source Geospatial Foundation (OSGeo)
 *    (C) 2008, Open Geospatial Consortium Inc.
 *
 *    All Rights Reserved. http://www.opengis.org/legal/
 */
package org.opengis.style;

import org.opengis.annotation.Extension;
import org.opengis.annotation.XmlElement;
import org.opengis.filter.expression.Expression;

/**
 * The ShadedRelief element selects the application of relief shading (or “hill shading”) to an
 * image for a three-dimensional visual effect.
 *
 * 

Exact parameters of the shading are system-dependent (for now). If the BrightnessOnly flag is * “0” or “false” (false, default), the shading is applied to the layer being rendered as the * current RasterSymbolizer. If BrightnessOnly is “1” or “true” (true), the shading is applied to * the brightness of the colors in the rendering canvas generated so far by other layers, with the * effect of relief-shading these other layers. The default for BrightnessOnly is “0” (false). The * ReliefFactor gives the amount of exaggeration to use for the height of the “hills.” A value of * around 55 (times) gives reasonable results for Earth-based DEMs. The default value is * system-dependent. * * @version Symbology Encoding * Implementation Specification 1.1.0 * @author Open Geospatial Consortium * @author Ian Turton, CCG * @author Johann Sorel (Geomatys) * @since GeoAPI 2.2 */ @XmlElement("ShadedRelief") public interface ShadedRelief { /** * indicates if brightnessOnly is true or false. Default is false. * * @return boolean brightnessOn. */ @XmlElement("BrightnessOnly") public boolean isBrightnessOnly(); /** * The ReliefFactor gives the amount of exaggeration to use for the height of the ?hills.? A * value of around 55 (times) gives reasonable results for Earth-based DEMs. The default value * is system-dependent. * * @return an expression which evaluates to a double. */ @XmlElement("ReliefFactor") public Expression getReliefFactor(); /** * calls the visit method of a StyleVisitor * * @param visitor the style visitor */ @Extension Object accept(StyleVisitor visitor, Object extraData); }





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