1 package org.djunits.value.vdouble.scalar;
2
3 import java.util.regex.Matcher;
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5 import org.djunits.unit.DensityUnit;
6 import org.djunits.unit.DimensionlessUnit;
7 import org.djunits.unit.MassUnit;
8 import org.djunits.unit.Unit;
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34 public class Density extends AbstractDoubleScalarRel<DensityUnit, Density>
35 {
36
37 private static final long serialVersionUID = 20150905L;
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40 public static final Density ZERO = new Density(0.0, DensityUnit.SI);
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42
43 @SuppressWarnings("checkstyle:constantname")
44 public static final Density NaN = new Density(Double.NaN, DensityUnit.SI);
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47 public static final Density POSITIVE_INFINITY = new Density(Double.POSITIVE_INFINITY, DensityUnit.SI);
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50 public static final Density NEGATIVE_INFINITY = new Density(Double.NEGATIVE_INFINITY, DensityUnit.SI);
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53 public static final Density POS_MAXVALUE = new Density(Double.MAX_VALUE, DensityUnit.SI);
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56 public static final Density NEG_MAXVALUE = new Density(-Double.MAX_VALUE, DensityUnit.SI);
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63 public Density(final double value, final DensityUnit unit)
64 {
65 super(value, unit);
66 }
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72 public Density(final Density value)
73 {
74 super(value);
75 }
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78 @Override
79 public final Density instantiateRel(final double value, final DensityUnit unit)
80 {
81 return new Density(value, unit);
82 }
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89 public static final Density createSI(final double value)
90 {
91 return new Density(value, DensityUnit.SI);
92 }
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101 public static Density interpolate(final Density zero, final Density one, final double ratio)
102 {
103 return new Density(zero.getInUnit() * (1 - ratio) + one.getInUnit(zero.getUnit()) * ratio, zero.getUnit());
104 }
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112 public static Density max(final Density r1, final Density r2)
113 {
114 return (r1.gt(r2)) ? r1 : r2;
115 }
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124 public static Density max(final Density r1, final Density r2, final Density... rn)
125 {
126 Density maxr = (r1.gt(r2)) ? r1 : r2;
127 for (Density r : rn)
128 {
129 if (r.gt(maxr))
130 {
131 maxr = r;
132 }
133 }
134 return maxr;
135 }
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143 public static Density min(final Density r1, final Density r2)
144 {
145 return (r1.lt(r2)) ? r1 : r2;
146 }
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155 public static Density min(final Density r1, final Density r2, final Density... rn)
156 {
157 Density minr = (r1.lt(r2)) ? r1 : r2;
158 for (Density r : rn)
159 {
160 if (r.lt(minr))
161 {
162 minr = r;
163 }
164 }
165 return minr;
166 }
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176 public static Density valueOf(final String text) throws IllegalArgumentException
177 {
178 if (text == null || text.length() == 0)
179 {
180 throw new IllegalArgumentException("Error parsing Density -- null or empty argument");
181 }
182 Matcher matcher = NUMBER_PATTERN.matcher(text);
183 if (matcher.find())
184 {
185 int index = matcher.end();
186 try
187 {
188 String unitString = text.substring(index).trim();
189 String valueString = text.substring(0, index).trim();
190 for (DensityUnit unit : Unit.getUnits(DensityUnit.class))
191 {
192 if (unit.getDefaultLocaleTextualRepresentations().contains(unitString))
193 {
194 double d = Double.parseDouble(valueString);
195 return new Density(d, unit);
196 }
197 }
198 }
199 catch (Exception exception)
200 {
201 throw new IllegalArgumentException("Error parsing Density from " + text, exception);
202 }
203 }
204 throw new IllegalArgumentException("Error parsing Density from " + text);
205 }
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212 public final Dimensionless divideBy(final Density v)
213 {
214 return new Dimensionless(this.si / v.si, DimensionlessUnit.SI);
215 }
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222 public final Mass multiplyBy(final Volume v)
223 {
224 return new Mass(this.si * v.si, MassUnit.SI);
225 }
226
227 }