2 * Jalview - A Sequence Alignment Editor and Viewer (Version 2.4)
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3 * Copyright (C) 2008 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle
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5 * This program is free software; you can redistribute it and/or
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6 * modify it under the terms of the GNU General Public License
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7 * as published by the Free Software Foundation; either version 2
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8 * of the License, or (at your option) any later version.
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10 * This program is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 * GNU General Public License for more details.
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15 * You should have received a copy of the GNU General Public License
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16 * along with this program; if not, write to the Free Software
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17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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19 package jalview.util;
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24 * ShiftList Simple way of mapping a linear series to a new linear range with
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25 * new points introduced. Use at your own risk! Now growing to be used for
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26 * interval ranges (position, offset) storing deletions/insertions
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28 public class ShiftList
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30 public Vector shifts;
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34 shifts = new Vector();
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41 * start position for shift (in original reference frame)
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45 public void addShift(int pos, int shift)
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48 int[] rshift = null;
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49 while (sidx < shifts.size()
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50 && (rshift = (int[]) shifts.elementAt(sidx))[0] < pos)
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54 if (sidx == shifts.size())
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56 shifts.insertElementAt(new int[]
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57 { pos, shift }, sidx);
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70 * @return int shifted position
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72 public int shift(int pos)
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74 if (shifts.size() == 0)
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81 while (sidx < shifts.size()
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82 && (rshift = ((int[]) shifts.elementAt(sidx++)))[0] <= pos)
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84 shifted += rshift[1];
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94 shifts.removeAllElements();
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100 * @return ShiftList with inverse shift operations
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102 public ShiftList getInverse()
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104 ShiftList inverse = new ShiftList();
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105 if (shifts != null)
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107 for (int i = 0, j = shifts.size(); i < j; i++)
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109 int[] sh = (int[]) shifts.elementAt(i);
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112 inverse.shifts.addElement(new int[]
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113 { sh[0], -sh[1] });
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121 * parse a 1d map of position 1<i<n to L<pos[i]<N such as that returned
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122 * from SequenceI.gapMap()
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125 * @return shifts from map index to mapped position
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127 public static ShiftList parseMap(int[] gapMap)
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129 ShiftList shiftList = null;
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130 if (gapMap != null && gapMap.length > 0)
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132 shiftList = new ShiftList();
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133 for (int i = 0, p = 0; i < gapMap.length; p++, i++)
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135 if (p != gapMap[i])
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137 shiftList.addShift(p, gapMap[i] - p);
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