1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
|
/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSimulator Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Reflection;
using System.Collections.Generic;
using log4net;
using OpenMetaverse;
using OpenSim.Region.Framework.Interfaces;
using System;
namespace OpenSim.Region.Framework.Scenes
{
/*
[Flags]
public enum UndoType
{
STATE_PRIM_POSITION = 1,
STATE_PRIM_ROTATION = 2,
STATE_PRIM_SCALE = 4,
STATE_PRIM_ALL = 7,
STATE_GROUP_POSITION = 8,
STATE_GROUP_ROTATION = 16,
STATE_GROUP_SCALE = 32,
STATE_GROUP_ALL = 56,
STATE_ALL = 63
}
public class UndoState
{
// private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
public Vector3 Position = Vector3.Zero;
public Vector3 Scale = Vector3.Zero;
public Quaternion Rotation = Quaternion.Identity;
/// <summary>
/// Is this undo state for an entire group?
/// </summary>
public bool ForGroup;
/// <summary>
/// Constructor.
/// </summary>
/// <param name="part"></param>
/// <param name="forGroup">True if the undo is for an entire group</param>
/// only for root parts ????
public UndoState(SceneObjectPart part, bool forGroup)
{
if (part.ParentID == 0)
{
ForGroup = forGroup;
Position = part.ParentGroup.AbsolutePosition;
Rotation = part.RotationOffset;
Scale = part.Shape.Scale;
}
else
{
ForGroup = false; // only root parts can undo grp
Position = part.OffsetPosition;
Rotation = part.RotationOffset;
Scale = part.Shape.Scale;
}
}
/// <summary>
/// Compare the relevant state in the given part to this state.
/// </summary>
/// <param name="part"></param>
/// <returns>true if both the part's position, rotation and scale match those in this undo state. False otherwise.</returns>
public bool Compare(SceneObjectPart part, bool forgrp)
{
if (ForGroup != forgrp) // if diferent targets, then they are diferent
return false;
if (part != null)
{
if (part.ParentID == 0)
{
// root part
// grp position is same as part
if (Position != part.ParentGroup.AbsolutePosition)
return false;
if (Rotation != part.RotationOffset)
return false;
return Scale == part.Shape.Scale;
}
else
{
return (Position == part.OffsetPosition
&& Rotation == part.RotationOffset
&& Scale == part.Shape.Scale);
}
}
return false;
}
public void PlayState(SceneObjectPart part)
{
part.Undoing = true;
bool physbuilding = false;
if (part.ParentID == 0)
{
if (!ForGroup && part.PhysActor != null)
{
part.PhysActor.Building = true;
physbuilding = true;
}
if (Position != Vector3.Zero)
{
if (ForGroup)
part.ParentGroup.AbsolutePosition = Position;
else
part.ParentGroup.UpdateRootPosition(Position);
}
if (ForGroup)
part.UpdateRotation(Rotation);
else
part.ParentGroup.UpdateRootRotation(Rotation);
if (Scale != Vector3.Zero)
{
if (!physbuilding && part.PhysActor != null)
{
part.PhysActor.Building = true;
physbuilding = true;
}
if (ForGroup)
part.ParentGroup.GroupResize(Scale);
else
part.Resize(Scale);
}
if (physbuilding)
part.PhysActor.Building = false;
part.ParentGroup.ScheduleGroupForTerseUpdate();
}
else
{
if (ForGroup) // trap for group since seems parts can't do it
return;
// changing a part invalidates entire object physical rep
if (part.ParentGroup != null && part.ParentGroup.RootPart != null && part.ParentGroup.RootPart.PhysActor != null)
{
part.ParentGroup.RootPart.PhysActor.Building = true;
physbuilding = true;
}
// Note: Updating these properties on sop automatically schedules an update if needed
part.OffsetPosition = Position;
part.UpdateRotation(Rotation);
if (Scale != Vector3.Zero)
{
part.Resize(Scale);
}
if (physbuilding)
part.ParentGroup.RootPart.PhysActor.Building = false;
}
part.Undoing = false;
}
}
*/
public class UndoState
{
const int UNDOEXPIRESECONDS = 300; // undo expire time (nice to have it came from a ini later)
public ObjectChangeData data;
public DateTime creationtime;
/// <summary>
/// Constructor.
/// </summary>
/// <param name="part"></param>
/// <param name="forGroup">True if the undo is for an entire group</param>
/// only for root parts ????
public UndoState(SceneObjectPart part, ObjectChangeWhat what)
{
data = new ObjectChangeData();
data.what = what;
creationtime = DateTime.UtcNow;
if (part.ParentGroup.RootPart == part)
{
if ((what & ObjectChangeWhat.Position) != 0)
data.position = part.ParentGroup.AbsolutePosition;
if ((what & ObjectChangeWhat.Rotation) != 0)
data.rotation = part.RotationOffset;
if ((what & ObjectChangeWhat.Scale) != 0)
data.scale = part.Shape.Scale;
}
else
{
if ((what & ObjectChangeWhat.Position) != 0)
data.position = part.OffsetPosition;
if ((what & ObjectChangeWhat.Rotation) != 0)
data.rotation = part.RotationOffset;
if ((what & ObjectChangeWhat.Scale) != 0)
data.scale = part.Shape.Scale;
}
}
public bool checkExpire()
{
TimeSpan t = DateTime.UtcNow - creationtime;
if (t.Seconds > UNDOEXPIRESECONDS)
return true;
return false;
}
public void updateExpire()
{
creationtime = DateTime.UtcNow;
}
/// <summary>
/// Compare the relevant state in the given part to this state.
/// </summary>
/// <param name="part"></param>
/// <returns>true if both the part's position, rotation and scale match those in this undo state. False otherwise.</returns>
public bool Compare(SceneObjectPart part, ObjectChangeWhat what)
{
if (data.what != what) // if diferent targets, then they are diferent
return false;
if (part != null)
{
if (part.ParentID == 0)
{
if ((what & ObjectChangeWhat.Position) != 0 && data.position != part.ParentGroup.AbsolutePosition)
return false;
}
else
{
if ((what & ObjectChangeWhat.Position) != 0 && data.position != part.OffsetPosition)
return false;
}
if ((what & ObjectChangeWhat.Rotation) != 0 && data.rotation != part.RotationOffset)
return false;
if ((what & ObjectChangeWhat.Rotation) != 0 && data.scale == part.Shape.Scale)
return false;
return true;
}
return false;
}
public void PlayState(SceneObjectPart part)
{
part.Undoing = true;
SceneObjectGroup grp = part.ParentGroup;
if (grp != null)
{
grp.doChangeObject(part, data);
}
part.Undoing = false;
}
}
public class UndoRedoState
{
int size;
public LinkedList<UndoState> m_redo = new LinkedList<UndoState>();
public LinkedList<UndoState> m_undo = new LinkedList<UndoState>();
public UndoRedoState()
{
size = 5;
}
public UndoRedoState(int _size)
{
if (_size < 3)
size = 3;
else
size = _size;
}
public int Count
{
get { return m_undo.Count; }
}
public void Clear()
{
m_undo.Clear();
m_redo.Clear();
}
public void StoreUndo(SceneObjectPart part, ObjectChangeWhat what)
{
lock (m_undo)
{
UndoState last;
if (m_redo.Count > 0) // last code seems to clear redo on every new undo
{
m_redo.Clear();
}
if (m_undo.Count > 0)
{
// check expired entry
last = m_undo.First.Value;
if (last != null && last.checkExpire())
m_undo.Clear();
else
{
// see if we actually have a change
if (last != null)
{
if (last.Compare(part, what))
return;
}
}
}
// limite size
while (m_undo.Count >= size)
m_undo.RemoveLast();
UndoState nUndo = new UndoState(part, what);
m_undo.AddFirst(nUndo);
}
}
public void Undo(SceneObjectPart part)
{
lock (m_undo)
{
UndoState nUndo;
// expire redo
if (m_redo.Count > 0)
{
nUndo = m_redo.First.Value;
if (nUndo != null && nUndo.checkExpire())
m_redo.Clear();
}
if (m_undo.Count > 0)
{
UndoState goback = m_undo.First.Value;
// check expired
if (goback != null && goback.checkExpire())
{
m_undo.Clear();
return;
}
if (goback != null)
{
m_undo.RemoveFirst();
// redo limite size
while (m_redo.Count >= size)
m_redo.RemoveLast();
nUndo = new UndoState(part, goback.data.what); // new value in part should it be full goback copy?
m_redo.AddFirst(nUndo);
goback.PlayState(part);
}
}
}
}
public void Redo(SceneObjectPart part)
{
lock (m_undo)
{
UndoState nUndo;
// expire undo
if (m_undo.Count > 0)
{
nUndo = m_undo.First.Value;
if (nUndo != null && nUndo.checkExpire())
m_undo.Clear();
}
if (m_redo.Count > 0)
{
UndoState gofwd = m_redo.First.Value;
// check expired
if (gofwd != null && gofwd.checkExpire())
{
m_redo.Clear();
return;
}
if (gofwd != null)
{
m_redo.RemoveFirst();
// limite undo size
while (m_undo.Count >= size)
m_undo.RemoveLast();
nUndo = new UndoState(part, gofwd.data.what); // new value in part should it be full gofwd copy?
m_undo.AddFirst(nUndo);
gofwd.PlayState(part);
}
}
}
}
}
public class LandUndoState
{
public ITerrainModule m_terrainModule;
public ITerrainChannel m_terrainChannel;
public LandUndoState(ITerrainModule terrainModule, ITerrainChannel terrainChannel)
{
m_terrainModule = terrainModule;
m_terrainChannel = terrainChannel;
}
public bool Compare(ITerrainChannel terrainChannel)
{
return m_terrainChannel == terrainChannel;
}
public void PlaybackState()
{
m_terrainModule.UndoTerrain(m_terrainChannel);
}
}
}
|