1 | /* |
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2 | * $Id: PointCollection.java,v 1.6 2001/02/06 00:47:24 dwd Exp $ |
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3 | * |
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4 | * This software is provided by NOAA for full, free and open release. It is |
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5 | * understood by the recipient/user that NOAA assumes no liability for any |
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6 | * errors contained in the code. Although this software is released without |
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7 | * conditions or restrictions in its use, it is expected that appropriate |
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8 | * credit be given to its author and to the National Oceanic and Atmospheric |
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9 | * Administration should the software be included by the recipient as an |
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10 | * element in other product development. |
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11 | */ |
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12 | |
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13 | package gov.noaa.pmel.sgt.dm; |
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14 | |
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15 | import java.util.Vector; |
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16 | import java.util.Enumeration; |
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17 | |
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18 | import gov.noaa.pmel.util.SoTRange; |
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19 | |
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20 | /** |
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21 | * <code>PointCollection</code> is an extension to <code>Vector</code> |
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22 | * designed to hold <code>SGTPoint</code> objects. |
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23 | * |
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24 | * @author Donald Denbo |
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25 | * @version $Revision: 1.6 $, $Date: 2001/02/06 00:47:24 $ |
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26 | * @since 2.0 |
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27 | * @see SGTData |
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28 | * @see SGTPoint |
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29 | * @see SGTLine |
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30 | * @see SGTGrid |
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31 | * @see SGTVector |
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32 | */ |
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33 | public class PointCollection extends Collection { |
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34 | private SoTRange xRange_ = null; |
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35 | private SoTRange yRange_ = null; |
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36 | private int colLen_ = 0; |
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37 | |
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38 | /** |
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39 | * @link aggregation |
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40 | * @clientRole x |
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41 | */ |
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42 | private SGTMetaData xMetaData_; |
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43 | |
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44 | /** |
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45 | * @link aggregation |
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46 | * @clientRole y |
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47 | */ |
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48 | private SGTMetaData yMetaData_; |
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49 | /** |
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50 | * Default consturctor |
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51 | */ |
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52 | public PointCollection() { |
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53 | this(""); |
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54 | } |
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55 | public PointCollection(String title) { |
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56 | super(title); |
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57 | } |
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58 | public PointCollection(String title, int initialCapacity) { |
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59 | super(title, initialCapacity); |
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60 | } |
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61 | public PointCollection(String title, int initialCapacity, int increment) { |
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62 | super(title, initialCapacity, increment); |
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63 | } |
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64 | /** |
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65 | * Create a copy. |
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66 | * |
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67 | * @see SGTData |
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68 | */ |
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69 | public SGTData copy() { |
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70 | PointCollection newCollection; |
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71 | newCollection = (PointCollection)clone(); |
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72 | return (SGTData)newCollection; |
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73 | } |
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74 | public SoTRange getXRange() { |
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75 | computeRange(); |
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76 | return xRange_.copy(); |
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77 | } |
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78 | |
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79 | public SoTRange getYRange() { |
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80 | computeRange(); |
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81 | return yRange_.copy(); |
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82 | } |
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83 | |
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84 | private void computeRange() { |
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85 | if(colLen_ == size()) return; |
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86 | colLen_ = size(); |
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87 | double xmin = Double.POSITIVE_INFINITY; |
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88 | double xmax = Double.NEGATIVE_INFINITY; |
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89 | double ymin = xmin; |
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90 | double ymax = xmax; |
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91 | double ptx, pty; |
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92 | |
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93 | int count = 0; |
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94 | Enumeration e = elements(); |
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95 | while(e.hasMoreElements()) { |
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96 | Object obj = e.nextElement(); |
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97 | if(obj instanceof SGTPoint) { |
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98 | SGTPoint pt = (SGTPoint)obj; |
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99 | ptx = pt.getX(); |
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100 | pty = pt.getY(); |
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101 | if(!(Double.isNaN(ptx) || Double.isNaN(pty))) { |
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102 | xmin = Math.min(xmin, ptx); |
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103 | xmax = Math.max(xmax, ptx); |
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104 | ymin = Math.min(ymin, pty); |
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105 | ymax = Math.max(ymax, pty); |
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106 | count++; |
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107 | } |
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108 | } |
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109 | } |
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110 | if(count == 0) { |
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111 | xRange_ = new SoTRange.Double(Double.NaN, Double.NaN); |
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112 | yRange_ = new SoTRange.Double(Double.NaN, Double.NaN); |
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113 | } else { |
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114 | xRange_ = new SoTRange.Double(xmin, xmax); |
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115 | yRange_ = new SoTRange.Double(ymin, ymax); |
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116 | } |
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117 | } |
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118 | |
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119 | public SGTMetaData getXMetaData(){ |
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120 | return xMetaData_; |
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121 | } |
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122 | /** |
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123 | * Set the <code>SGTMetaData</code> associated with the x axis. |
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124 | */ |
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125 | public void setXMetaData(SGTMetaData xMetaData){ |
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126 | xMetaData_ = xMetaData; |
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127 | } |
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128 | |
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129 | public SGTMetaData getYMetaData(){ |
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130 | return yMetaData_; |
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131 | } |
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132 | /** |
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133 | * Set the <code>SGTMetaData</code> associated with the y axis. |
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134 | */ |
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135 | public void setYMetaData(SGTMetaData yMetaData){ |
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136 | yMetaData_ = yMetaData; |
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137 | } |
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138 | } |
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