001 //$HeadURL: https://sushibar/svn/deegree/base/trunk/resources/eclipse/svn_classfile_header_template.xml $
002 /*----------------------------------------------------------------------------
003 This file is part of deegree, http://deegree.org/
004 Copyright (C) 2001-2009 by:
005 Department of Geography, University of Bonn
006 and
007 lat/lon GmbH
008
009 This library is free software; you can redistribute it and/or modify it under
010 the terms of the GNU Lesser General Public License as published by the Free
011 Software Foundation; either version 2.1 of the License, or (at your option)
012 any later version.
013 This library is distributed in the hope that it will be useful, but WITHOUT
014 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016 details.
017 You should have received a copy of the GNU Lesser General Public License
018 along with this library; if not, write to the Free Software Foundation, Inc.,
019 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020
021 Contact information:
022
023 lat/lon GmbH
024 Aennchenstr. 19, 53177 Bonn
025 Germany
026 http://lat-lon.de/
027
028 Department of Geography, University of Bonn
029 Prof. Dr. Klaus Greve
030 Postfach 1147, 53001 Bonn
031 Germany
032 http://www.geographie.uni-bonn.de/deegree/
033
034 e-mail: info@deegree.org
035 ----------------------------------------------------------------------------*/
036
037 package org.deegree.graphics.sld;
038
039 import java.util.List;
040
041 import org.deegree.graphics.sld.SLDFactory.Method;
042 import org.deegree.graphics.sld.SLDFactory.Mode;
043
044 /**
045 * <code>Interpolate</code> encapsulates data from the Symbology Encoding Schema (InterpolateType).
046 *
047 * @author <a href="mailto:schmitz@lat-lon.de">Andreas Schmitz</a>
048 * @author last edited by: $Author:$
049 *
050 * @version $Revision:$, $Date:$
051 */
052 public class Interpolate {
053
054 private String fallbackValue;
055
056 private ParameterValueType lookupValue;
057
058 private Mode mode;
059
060 private Method method;
061
062 private List<InterpolationPoint> points;
063
064 /**
065 * @param fallbackValue
066 */
067 public Interpolate( String fallbackValue ) {
068 this.fallbackValue = fallbackValue;
069 }
070
071 /**
072 * @param lookupValue
073 */
074 public void setLookupValue( ParameterValueType lookupValue ) {
075 this.lookupValue = lookupValue;
076 }
077
078 /**
079 * @return the fallbackValue
080 */
081 public String getFallbackValue() {
082 return fallbackValue;
083 }
084
085 /**
086 * @return the lookupValue
087 */
088 public ParameterValueType getLookupValue() {
089 return lookupValue;
090 }
091
092 /**
093 * @return the method
094 */
095 public Method getMethod() {
096 return method;
097 }
098
099 /**
100 * @return the mode
101 */
102 public Mode getMode() {
103 return mode;
104 }
105
106 /**
107 * @param mode
108 */
109 public void setMode( Mode mode ) {
110 this.mode = mode;
111 }
112
113 /**
114 * @param method
115 */
116 public void setMethod( Method method ) {
117 this.method = method;
118 }
119
120 /**
121 * @param d
122 * @param opac
123 * the default opacity if none has been set
124 * @return the color value as int
125 */
126 public int interpolate( float d, int opac ) {
127 int opacity = opac >> 24;
128
129 InterpolationPoint p = points.get( 0 );
130 int r = p.redValue, g = p.greenValue, b = p.blueValue, o = p.opacitySet ? p.opacity : opacity;
131 double data = p.data;
132 if ( d < p.data ) {
133 return ( o << 24 ) + ( r << 16 ) + ( g << 8 ) + b;
134 }
135
136 for ( int i = 1; i < points.size(); ++i ) {
137 p = points.get( i );
138 if ( p.data > d ) {
139 double f = ( p.data - d ) / ( p.data - data );
140 return ( ( (int) ( ( 1 - f ) * ( p.opacitySet ? p.opacity : opacity ) + f * o ) ) << 24 )
141 + ( ( (int) ( ( 1 - f ) * p.redValue + f * r ) ) << 16 )
142 + ( ( (int) ( ( 1 - f ) * p.greenValue + f * g ) ) << 8 )
143 + ( (int) ( ( ( 1 - f ) * p.blueValue + f * b ) ) );
144 }
145 r = p.redValue;
146 g = p.greenValue;
147 b = p.blueValue;
148 o = p.opacitySet ? p.opacity : opacity;
149 data = p.data;
150 }
151
152 return ( o << 24 ) + ( r << 16 ) + ( g << 8 ) + b;
153 }
154
155 /**
156 * @param points
157 */
158 public void setInterpolationPoints( List<InterpolationPoint> points ) {
159 this.points = points;
160 }
161
162 }