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| 2287 | - | 1 | |
| 2 | namespace GMap.NET.Internals |
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| 3 | { |
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| 4 | using System.Collections.Generic; |
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| 5 | using System.Threading; |
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| 6 | using System.Diagnostics; |
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| 7 | using System; |
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| 8 | |||
| 9 | /// <summary> |
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| 10 | /// matrix for tiles |
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| 11 | /// </summary> |
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| 12 | internal class TileMatrix : IDisposable |
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| 13 | { |
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| 14 | List<Dictionary<GPoint, Tile>> Levels = new List<Dictionary<GPoint, Tile>>(33); |
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| 15 | FastReaderWriterLock Lock = new FastReaderWriterLock(); |
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| 16 | |||
| 17 | public TileMatrix() |
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| 18 | { |
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| 19 | for(int i = 0; i < Levels.Capacity; i++) |
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| 20 | { |
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| 21 | Levels.Add(new Dictionary<GPoint, Tile>(55, new GPointComparer())); |
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| 22 | } |
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| 23 | } |
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| 24 | |||
| 25 | public void ClearAllLevels() |
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| 26 | { |
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| 27 | Lock.AcquireWriterLock(); |
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| 28 | try |
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| 29 | { |
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| 30 | foreach(var matrix in Levels) |
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| 31 | { |
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| 32 | foreach(var t in matrix) |
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| 33 | { |
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| 34 | t.Value.Dispose(); |
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| 35 | } |
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| 36 | matrix.Clear(); |
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| 37 | } |
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| 38 | } |
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| 39 | finally |
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| 40 | { |
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| 41 | Lock.ReleaseWriterLock(); |
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| 42 | } |
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| 43 | } |
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| 44 | |||
| 45 | public void ClearLevel(int zoom) |
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| 46 | { |
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| 47 | Lock.AcquireWriterLock(); |
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| 48 | try |
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| 49 | { |
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| 50 | if(zoom < Levels.Count) |
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| 51 | { |
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| 52 | var l = Levels[zoom]; |
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| 53 | |||
| 54 | foreach(var t in l) |
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| 55 | { |
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| 56 | t.Value.Dispose(); |
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| 57 | } |
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| 58 | |||
| 59 | l.Clear(); |
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| 60 | } |
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| 61 | } |
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| 62 | finally |
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| 63 | { |
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| 64 | Lock.ReleaseWriterLock(); |
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| 65 | } |
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| 66 | } |
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| 67 | |||
| 68 | List<KeyValuePair<GPoint, Tile>> tmp = new List<KeyValuePair<GPoint, Tile>>(44); |
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| 69 | |||
| 70 | public void ClearLevelAndPointsNotIn(int zoom, List<DrawTile> list) |
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| 71 | { |
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| 72 | Lock.AcquireWriterLock(); |
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| 73 | try |
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| 74 | { |
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| 75 | if(zoom < Levels.Count) |
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| 76 | { |
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| 77 | var l = Levels[zoom]; |
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| 78 | |||
| 79 | tmp.Clear(); |
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| 80 | |||
| 81 | foreach(var t in l) |
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| 82 | { |
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| 83 | if(!list.Exists(p => p.PosXY == t.Key)) |
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| 84 | { |
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| 85 | tmp.Add(t); |
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| 86 | } |
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| 87 | } |
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| 88 | |||
| 89 | foreach(var r in tmp) |
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| 90 | { |
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| 91 | l.Remove(r.Key); |
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| 92 | r.Value.Dispose(); |
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| 93 | } |
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| 94 | |||
| 95 | tmp.Clear(); |
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| 96 | } |
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| 97 | } |
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| 98 | finally |
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| 99 | { |
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| 100 | Lock.ReleaseWriterLock(); |
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| 101 | } |
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| 102 | } |
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| 103 | |||
| 104 | public void ClearLevelsBelove(int zoom) |
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| 105 | { |
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| 106 | Lock.AcquireWriterLock(); |
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| 107 | try |
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| 108 | { |
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| 109 | if(zoom - 1 < Levels.Count) |
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| 110 | { |
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| 111 | for(int i = zoom - 1; i >= 0; i--) |
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| 112 | { |
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| 113 | var l = Levels[i]; |
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| 114 | |||
| 115 | foreach(var t in l) |
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| 116 | { |
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| 117 | t.Value.Dispose(); |
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| 118 | } |
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| 119 | |||
| 120 | l.Clear(); |
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| 121 | } |
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| 122 | } |
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| 123 | } |
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| 124 | finally |
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| 125 | { |
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| 126 | Lock.ReleaseWriterLock(); |
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| 127 | } |
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| 128 | } |
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| 129 | |||
| 130 | public void ClearLevelsAbove(int zoom) |
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| 131 | { |
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| 132 | Lock.AcquireWriterLock(); |
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| 133 | try |
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| 134 | { |
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| 135 | if(zoom + 1 < Levels.Count) |
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| 136 | { |
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| 137 | for(int i = zoom + 1; i < Levels.Count; i++) |
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| 138 | { |
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| 139 | var l = Levels[i]; |
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| 140 | |||
| 141 | foreach(var t in l) |
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| 142 | { |
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| 143 | t.Value.Dispose(); |
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| 144 | } |
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| 145 | |||
| 146 | l.Clear(); |
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| 147 | } |
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| 148 | } |
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| 149 | } |
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| 150 | finally |
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| 151 | { |
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| 152 | Lock.ReleaseWriterLock(); |
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| 153 | } |
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| 154 | } |
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| 155 | |||
| 156 | public void EnterReadLock() |
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| 157 | { |
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| 158 | Lock.AcquireReaderLock(); |
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| 159 | } |
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| 160 | |||
| 161 | public void LeaveReadLock() |
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| 162 | { |
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| 163 | Lock.ReleaseReaderLock(); |
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| 164 | } |
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| 165 | |||
| 166 | public Tile GetTileWithNoLock(int zoom, GPoint p) |
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| 167 | { |
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| 168 | Tile ret = Tile.Empty; |
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| 169 | |||
| 170 | //if(zoom < Levels.Count) |
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| 171 | { |
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| 172 | Levels[zoom].TryGetValue(p, out ret); |
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| 173 | } |
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| 174 | |||
| 175 | return ret; |
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| 176 | } |
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| 177 | |||
| 178 | public Tile GetTileWithReadLock(int zoom, GPoint p) |
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| 179 | { |
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| 180 | Tile ret = Tile.Empty; |
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| 181 | |||
| 182 | Lock.AcquireReaderLock(); |
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| 183 | try |
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| 184 | { |
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| 185 | ret = GetTileWithNoLock(zoom, p); |
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| 186 | } |
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| 187 | finally |
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| 188 | { |
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| 189 | Lock.ReleaseReaderLock(); |
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| 190 | } |
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| 191 | |||
| 192 | return ret; |
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| 193 | } |
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| 194 | |||
| 195 | public void SetTile(Tile t) |
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| 196 | { |
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| 197 | Lock.AcquireWriterLock(); |
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| 198 | try |
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| 199 | { |
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| 200 | if(t.Zoom < Levels.Count) |
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| 201 | { |
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| 202 | Levels[t.Zoom][t.Pos] = t; |
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| 203 | } |
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| 204 | } |
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| 205 | finally |
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| 206 | { |
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| 207 | Lock.ReleaseWriterLock(); |
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| 208 | } |
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| 209 | } |
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| 210 | |||
| 211 | #region IDisposable Members |
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| 212 | |||
| 213 | ~TileMatrix() |
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| 214 | { |
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| 215 | Dispose(false); |
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| 216 | } |
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| 217 | |||
| 218 | void Dispose(bool disposing) |
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| 219 | { |
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| 220 | if(Lock != null) |
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| 221 | { |
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| 222 | if(disposing) |
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| 223 | { |
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| 224 | ClearAllLevels(); |
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| 225 | } |
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| 226 | |||
| 227 | Levels.Clear(); |
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| 228 | Levels = null; |
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| 229 | |||
| 230 | tmp.Clear(); |
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| 231 | tmp = null; |
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| 232 | |||
| 233 | Lock.Dispose(); |
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| 234 | Lock = null; |
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| 235 | } |
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| 236 | } |
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| 237 | |||
| 238 | public void Dispose() |
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| 239 | { |
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| 240 | this.Dispose(true); |
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| 241 | GC.SuppressFinalize(this); |
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| 242 | } |
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| 243 | |||
| 244 | #endregion |
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| 245 | } |
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| 246 | } |