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authorJacek Antonelli2008-08-15 23:44:46 -0500
committerJacek Antonelli2008-08-15 23:44:46 -0500
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Second Life viewer sources 1.13.2.12
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1/**
2 * @file lllandmark.h
3 * @brief Landmark asset class
4 *
5 * Copyright (c) 2002-2007, Linden Research, Inc.
6 *
7 * The source code in this file ("Source Code") is provided by Linden Lab
8 * to you under the terms of the GNU General Public License, version 2.0
9 * ("GPL"), unless you have obtained a separate licensing agreement
10 * ("Other License"), formally executed by you and Linden Lab. Terms of
11 * the GPL can be found in doc/GPL-license.txt in this distribution, or
12 * online at http://secondlife.com/developers/opensource/gplv2
13 *
14 * There are special exceptions to the terms and conditions of the GPL as
15 * it is applied to this Source Code. View the full text of the exception
16 * in the file doc/FLOSS-exception.txt in this software distribution, or
17 * online at http://secondlife.com/developers/opensource/flossexception
18 *
19 * By copying, modifying or distributing this software, you acknowledge
20 * that you have read and understood your obligations described above,
21 * and agree to abide by those obligations.
22 *
23 * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
24 * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
25 * COMPLETENESS OR PERFORMANCE.
26 */
27
28
29#ifndef LL_LLLANDMARK_H
30#define LL_LLLANDMARK_H
31
32#include <map>
33#include "llframetimer.h"
34#include "lluuid.h"
35#include "v3dmath.h"
36
37class LLMessageSystem;
38class LLHost;
39
40// virutal base class used for calling back interested parties when a
41// region handle comes back.
42class LLRegionHandleCallback
43{
44public:
45 LLRegionHandleCallback() {}
46 virtual ~LLRegionHandleCallback() {}
47 virtual bool dataReady(
48 const LLUUID& region_id,
49 const U64& region_handle)
50 {
51 return true;
52 }
53};
54
55class LLLandmark
56{
57public:
58 ~LLLandmark() {}
59
60 // returns true if the position is known.
61 bool getGlobalPos(LLVector3d& pos);
62
63 // setter used in conjunction if more information needs to be
64 // collected from the server.
65 void setGlobalPos(const LLVector3d& pos);
66
67 // return true if the region is known
68 bool getRegionID(LLUUID& region_id);
69
70 // return the local coordinates if known
71 LLVector3 getRegionPos() const;
72
73 // constructs a new LLLandmark from a string
74 // return NULL if there's an error
75 static LLLandmark* constructFromString(const char *buffer);
76
77 // register callbacks that this class handles
78 static void registerCallbacks(LLMessageSystem* msg);
79
80 // request information about region_id to region_handle.Pass in a
81 // callback pointer which will be erase but NOT deleted after the
82 // callback is made. This function may call into the message
83 // system to get the information.
84 static void requestRegionHandle(
85 LLMessageSystem* msg,
86 const LLHost& upstream_host,
87 const LLUUID& region_id,
88 LLRegionHandleCallback* callback);
89
90 // Call this method to create a lookup for this region. This
91 // simplifies a lot of the code.
92 static void setRegionHandle(const LLUUID& region_id, U64 region_handle);
93
94private:
95 LLLandmark();
96 LLLandmark(const LLVector3d& pos);
97
98 static void processRegionIDAndHandle(LLMessageSystem* msg, void**);
99 static void expireOldEntries();
100
101private:
102 LLUUID mRegionID;
103 LLVector3 mRegionPos;
104 bool mGlobalPositionKnown;
105 LLVector3d mGlobalPos;
106
107 struct CacheInfo
108 {
109 U64 mRegionHandle;
110 LLFrameTimer mTimer;
111 };
112
113 static std::pair<LLUUID, U64> mLocalRegion;
114 typedef std::map<LLUUID, CacheInfo> region_map_t;
115 static region_map_t mRegions;
116 typedef std::multimap<LLUUID, LLRegionHandleCallback*> region_callback_t;
117 static region_callback_t mRegionCallback;
118};
119
120#endif