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| 3 | /*
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| 4 | * The JTS Topology Suite is a collection of Java classes that
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| 5 | * implement the fundamental operations required to validate a given
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| 6 | * geo-spatial data set to a known topological specification.
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| 7 | *
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| 8 | * Copyright (C) 2001 Vivid Solutions
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| 9 | *
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| 10 | * This library is free software; you can redistribute it and/or
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| 11 | * modify it under the terms of the GNU Lesser General Public
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| 12 | * License as published by the Free Software Foundation; either
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| 13 | * version 2.1 of the License, or (at your option) any later version.
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| 14 | *
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| 15 | * This library is distributed in the hope that it will be useful,
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| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 18 | * Lesser General Public License for more details.
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| 19 | *
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| 20 | * You should have received a copy of the GNU Lesser General Public
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| 21 | * License along with this library; if not, write to the Free Software
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| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 23 | *
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| 24 | * For more information, contact:
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| 25 | *
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| 26 | * Vivid Solutions
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| 27 | * Suite #1A
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| 28 | * 2328 Government Street
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| 29 | * Victoria BC V8T 5G5
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| 30 | * Canada
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| 31 | *
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| 32 | * (250)385-6040
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| 33 | * www.vividsolutions.com
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| 34 | */
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| 35 | package com.vividsolutions.jts.geom;
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| 36 |
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| 37 | /**
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| 38 | * Provides constants representing the dimensions of a point, a curve and a surface.
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| 39 | * Also provides constants representing the dimensions of the empty geometry and
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| 40 | * non-empty geometries, and the wildcard constant {@link #DONTCARE} meaning "any dimension".
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| 41 | * These constants are used as the entries in {@link IntersectionMatrix}s.
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| 42 | *
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| 43 | * @version 1.7
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| 44 | */
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| 45 | public class Dimension {
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| 46 |
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| 47 | /**
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| 48 | * Dimension value of a point (0).
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| 49 | */
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| 50 | public final static int P = 0;
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| 51 |
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| 52 | /**
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| 53 | * Dimension value of a curve (1).
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| 54 | */
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| 55 | public final static int L = 1;
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| 56 |
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| 57 | /**
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| 58 | * Dimension value of a surface (2).
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| 59 | */
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| 60 | public final static int A = 2;
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| 61 |
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| 62 | /**
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| 63 | * Dimension value of the empty geometry (-1).
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| 64 | */
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| 65 | public final static int FALSE = -1;
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| 66 |
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| 67 | /**
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| 68 | * Dimension value of non-empty geometries (= {P, L, A}).
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| 69 | */
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| 70 | public final static int TRUE = -2;
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| 71 |
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| 72 | /**
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| 73 | * Dimension value for any dimension (= {FALSE, TRUE}).
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| 74 | */
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| 75 | public final static int DONTCARE = -3;
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| 76 |
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| 77 | /**
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| 78 | * Converts the dimension value to a dimension symbol, for example, <code>TRUE => 'T'</code>
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| 79 | * .
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| 80 | *
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| 81 | *@param dimensionValue a number that can be stored in the <code>IntersectionMatrix</code>
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| 82 | * . Possible values are <code>{TRUE, FALSE, DONTCARE, 0, 1, 2}</code>.
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| 83 | *@return a character for use in the string representation of
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| 84 | * an <code>IntersectionMatrix</code>. Possible values are <code>{T, F, * , 0, 1, 2}</code>
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| 85 | * .
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| 86 | */
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| 87 | public static char toDimensionSymbol(int dimensionValue) {
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| 88 | switch (dimensionValue) {
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| 89 | case FALSE:
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| 90 | return 'F';
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| 91 | case TRUE:
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| 92 | return 'T';
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| 93 | case DONTCARE:
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| 94 | return '*';
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| 95 | case P:
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| 96 | return '0';
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| 97 | case L:
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| 98 | return '1';
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| 99 | case A:
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| 100 | return '2';
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| 101 | }
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| 102 | throw new IllegalArgumentException("Unknown dimension value: " + dimensionValue);
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| 103 | }
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| 104 |
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| 105 | /**
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| 106 | * Converts the dimension symbol to a dimension value, for example, <code>'*' => DONTCARE</code>
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| 107 | * .
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| 108 | *
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| 109 | *@param dimensionSymbol a character for use in the string representation of
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| 110 | * an <code>IntersectionMatrix</code>. Possible values are <code>{T, F, * , 0, 1, 2}</code>
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| 111 | * .
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| 112 | *@return a number that can be stored in the <code>IntersectionMatrix</code>
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| 113 | * . Possible values are <code>{TRUE, FALSE, DONTCARE, 0, 1, 2}</code>.
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| 114 | */
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| 115 | public static int toDimensionValue(char dimensionSymbol) {
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| 116 | switch (Character.toUpperCase(dimensionSymbol)) {
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| 117 | case 'F':
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| 118 | return FALSE;
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| 119 | case 'T':
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| 120 | return TRUE;
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| 121 | case '*':
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| 122 | return DONTCARE;
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| 123 | case '0':
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| 124 | return P;
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| 125 | case '1':
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| 126 | return L;
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| 127 | case '2':
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| 128 | return A;
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| 129 | }
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| 130 | throw new IllegalArgumentException("Unknown dimension symbol: " + dimensionSymbol);
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| 131 | }
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| 132 | }
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| 133 |
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| 134 |
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