Merge branch 'master' into DRTVWR-507-maint

1 files changed, 896 insertions, 0 deletions

diff --git a/indra/llinventory/llsettingsdaycycle.cpp b/indra/llinventory/llsettingsdaycycle.cpp
new file mode 100644
index 0000000000..457e5b7478
--- /dev/null
+++ b/indra/llinventory/llsettingsdaycycle.cpp
@@ -0,0 +1,896 @@
+/**
+* @file llsettingsdaycycle.cpp
+* @author optional
+* @brief A base class for asset based settings groups.
+*
+* $LicenseInfo:2011&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2017, Linden Research, Inc.
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+* Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+#include "llsettingsdaycycle.h"
+#include "llerror.h"
+#include <algorithm>
+#include <boost/make_shared.hpp>
+#include "lltrace.h"
+#include "llfasttimer.h"
+#include "v3colorutil.h"
+
+#include "llsettingssky.h"
+#include "llsettingswater.h"
+
+#include "llframetimer.h"
+
+//=========================================================================
+namespace
+{
+    LLTrace::BlockTimerStatHandle FTM_BLEND_WATERVALUES("Blending Water Environment");
+    LLTrace::BlockTimerStatHandle FTM_UPDATE_WATERVALUES("Update Water Environment");
+
+    template<typename T>
+    inline T get_wrapping_distance(T begin, T end)
+    {
+        if (begin < end)
+        {
+            return end - begin;
+        }
+        else if (begin > end)
+        {
+            return T(1.0) - (begin - end);
+        }
+
+        return 0;
+    }
+
+    LLSettingsDay::CycleTrack_t::iterator get_wrapping_atafter(LLSettingsDay::CycleTrack_t &collection, const LLSettingsBase::TrackPosition& key)
+    {
+        if (collection.empty())
+            return collection.end();
+
+        LLSettingsDay::CycleTrack_t::iterator it = collection.upper_bound(key);
+
+        if (it == collection.end())
+        {   // wrap around
+            it = collection.begin();
+        }
+
+        return it;
+    }
+
+    LLSettingsDay::CycleTrack_t::iterator get_wrapping_atbefore(LLSettingsDay::CycleTrack_t &collection, const LLSettingsBase::TrackPosition& key)
+    {
+        if (collection.empty())
+            return collection.end();
+
+        LLSettingsDay::CycleTrack_t::iterator it = collection.lower_bound(key);
+
+        if (it == collection.end())
+        {   // all keyframes are lower, take the last one.
+            --it; // we know the range is not empty
+        }
+        else if ((*it).first > key)
+        {   // the keyframe we are interested in is smaller than the found.
+            if (it == collection.begin())
+                it = collection.end();
+            --it;
+        }
+
+        return it;
+    }
+
+
+}
+
+//=========================================================================
+const std::string LLSettingsDay::SETTING_KEYID("key_id");
+const std::string LLSettingsDay::SETTING_KEYNAME("key_name");
+const std::string LLSettingsDay::SETTING_KEYKFRAME("key_keyframe");
+const std::string LLSettingsDay::SETTING_KEYHASH("key_hash");
+const std::string LLSettingsDay::SETTING_TRACKS("tracks");
+const std::string LLSettingsDay::SETTING_FRAMES("frames");
+
+const LLSettingsDay::Seconds LLSettingsDay::MINIMUM_DAYLENGTH(14400);  // 4 hours
+const LLSettingsDay::Seconds LLSettingsDay::DEFAULT_DAYLENGTH(14400);  // 4 hours
+const LLSettingsDay::Seconds LLSettingsDay::MAXIMUM_DAYLENGTH(604800); // 7 days
+
+const LLSettingsDay::Seconds LLSettingsDay::MINIMUM_DAYOFFSET(0);
+const LLSettingsDay::Seconds LLSettingsDay::DEFAULT_DAYOFFSET(57600);  // +16 hours == -8 hours (SLT time offset)
+const LLSettingsDay::Seconds LLSettingsDay::MAXIMUM_DAYOFFSET(86400);  // 24 hours
+
+const S32 LLSettingsDay::TRACK_WATER(0);   // water track is 0
+const S32 LLSettingsDay::TRACK_GROUND_LEVEL(1);
+const S32 LLSettingsDay::TRACK_MAX(5);     // 5 tracks, 4 skys, 1 water
+const S32 LLSettingsDay::FRAME_MAX(56);
+
+const F32 LLSettingsDay::DEFAULT_FRAME_SLOP_FACTOR(0.02501f);
+
+const LLUUID LLSettingsDay::DEFAULT_ASSET_ID("5646d39e-d3d7-6aff-ed71-30fc87d64a91");
+
+// Minimum value to prevent multislider in edit floaters from eating up frames that 'encroach' on one another's space
+static const F32 DEFAULT_MULTISLIDER_INCREMENT(0.005f);
+//=========================================================================
+LLSettingsDay::LLSettingsDay(const LLSD &data) :
+    LLSettingsBase(data),
+    mInitialized(false)
+{
+    mDayTracks.resize(TRACK_MAX);
+}
+
+LLSettingsDay::LLSettingsDay() :
+    LLSettingsBase(),
+    mInitialized(false)
+{
+    mDayTracks.resize(TRACK_MAX);
+}
+
+//=========================================================================
+LLSD LLSettingsDay::getSettings() const
+{
+    LLSD settings(LLSD::emptyMap());
+
+    if (mSettings.has(SETTING_NAME))
+        settings[SETTING_NAME] = mSettings[SETTING_NAME];
+
+    if (mSettings.has(SETTING_ID))
+        settings[SETTING_ID] = mSettings[SETTING_ID];
+
+    if (mSettings.has(SETTING_ASSETID))
+        settings[SETTING_ASSETID] = mSettings[SETTING_ASSETID];
+
+    settings[SETTING_TYPE] = getSettingsType();
+
+    std::map<std::string, LLSettingsBase::ptr_t> in_use;
+
+    LLSD tracks(LLSD::emptyArray());
+    
+    for (CycleList_t::const_iterator itTrack = mDayTracks.begin(); itTrack != mDayTracks.end(); ++itTrack)
+    {
+        LLSD trackout(LLSD::emptyArray());
+
+        for (CycleTrack_t::const_iterator itFrame = (*itTrack).begin(); itFrame != (*itTrack).end(); ++itFrame)
+        {
+            F32 frame = (*itFrame).first;
+            LLSettingsBase::ptr_t data = (*itFrame).second;
+            size_t datahash = data->getHash();
+
+            std::stringstream keyname;
+            keyname << datahash;
+
+            trackout.append(LLSD(LLSDMap(SETTING_KEYKFRAME, LLSD::Real(frame))(SETTING_KEYNAME, keyname.str())));
+            in_use[keyname.str()] = data;
+        }
+        tracks.append(trackout);
+    }
+    settings[SETTING_TRACKS] = tracks;
+
+    LLSD frames(LLSD::emptyMap());
+    for (std::map<std::string, LLSettingsBase::ptr_t>::iterator itFrame = in_use.begin(); itFrame != in_use.end(); ++itFrame)
+    {
+        LLSD framesettings = llsd_clone((*itFrame).second->getSettings(),
+            LLSDMap("*", true)(SETTING_NAME, false)(SETTING_ID, false)(SETTING_HASH, false));
+
+        frames[(*itFrame).first] = framesettings;
+    }
+    settings[SETTING_FRAMES] = frames;
+
+    return settings;
+}
+
+bool LLSettingsDay::initialize(bool validate_frames)
+{
+    LLSD tracks = mSettings[SETTING_TRACKS];
+    LLSD frames = mSettings[SETTING_FRAMES];
+
+    // save for later... 
+    LLUUID assetid;
+    if (mSettings.has(SETTING_ASSETID))
+    {
+        assetid = mSettings[SETTING_ASSETID].asUUID();
+    }
+
+    std::map<std::string, LLSettingsBase::ptr_t> used;
+
+    for (LLSD::map_const_iterator itFrame = frames.beginMap(); itFrame != frames.endMap(); ++itFrame)
+    {
+        std::string name = (*itFrame).first;
+        LLSD data = (*itFrame).second;
+        LLSettingsBase::ptr_t keyframe;
+
+        if (data[SETTING_TYPE].asString() == "sky")
+        {
+            keyframe = buildSky(data);
+        }
+        else if (data[SETTING_TYPE].asString() == "water")
+        {
+            keyframe = buildWater(data);
+        }
+        else
+        {
+            LL_WARNS("DAYCYCLE") << "Unknown child setting type '" << data[SETTING_TYPE].asString() << "' named '" << name << "'" << LL_ENDL;
+        }
+        if (!keyframe)
+        {
+            LL_WARNS("DAYCYCLE") << "Invalid frame data" << LL_ENDL;
+            continue;
+        }
+
+        used[name] = keyframe;
+    }
+
+    bool haswater(false);
+    bool hassky(false);
+
+    for (S32 i = 0; (i < tracks.size()) && (i < TRACK_MAX); ++i)
+    {
+        mDayTracks[i].clear();
+        LLSD curtrack = tracks[i];
+        for (LLSD::array_const_iterator it = curtrack.beginArray(); it != curtrack.endArray(); ++it)
+        {
+            LLSettingsBase::TrackPosition keyframe = LLSettingsBase::TrackPosition((*it)[SETTING_KEYKFRAME].asReal());
+            keyframe = llclamp(keyframe, 0.0f, 1.0f);
+            LLSettingsBase::ptr_t setting;
+
+            
+            if ((*it).has(SETTING_KEYNAME))
+            {
+                std::string key_name = (*it)[SETTING_KEYNAME];
+                if (i == TRACK_WATER)
+                {
+                    setting = used[key_name];
+                    if (setting && setting->getSettingsType() != "water")
+                    {
+                        LL_WARNS("DAYCYCLE") << "Water track referencing " << setting->getSettingsType() << " frame at " << keyframe << "." << LL_ENDL;
+                        setting.reset();
+                    }
+                }
+                else
+                {
+                    setting = used[key_name];
+                    if (setting && setting->getSettingsType() != "sky")
+                    {
+                        LL_WARNS("DAYCYCLE") << "Sky track #" << i << " referencing " << setting->getSettingsType() << " frame at " << keyframe << "." << LL_ENDL;
+                        setting.reset();
+                    }
+                }
+            }
+
+            if (setting)
+            {
+                if (i == TRACK_WATER)
+                    haswater |= true;
+                else
+                    hassky |= true;
+
+                if (validate_frames && mDayTracks[i].size() > 0)
+                {
+                    // check if we hit close to anything in the list
+                    LLSettingsDay::CycleTrack_t::value_type frame = getSettingsNearKeyframe(keyframe, i, DEFAULT_FRAME_SLOP_FACTOR);
+                    if (frame.second)
+                    {
+                        // figure out direction of search
+                        LLSettingsBase::TrackPosition found = frame.first;
+                        LLSettingsBase::TrackPosition new_frame = keyframe;
+                        F32 total_frame_shift = 0;
+                        // We consider frame DEFAULT_FRAME_SLOP_FACTOR away as still encroaching, so add minimum increment
+                        F32 move_factor = DEFAULT_FRAME_SLOP_FACTOR + DEFAULT_MULTISLIDER_INCREMENT;
+                        bool move_forward = true;
+                        if ((new_frame < found && (found - new_frame) <= DEFAULT_FRAME_SLOP_FACTOR)
+                            || (new_frame > found && (new_frame - found) > DEFAULT_FRAME_SLOP_FACTOR))
+                        {
+                            move_forward = false;
+                        }
+
+                        if (move_forward)
+                        {
+                            CycleTrack_t::iterator iter = mDayTracks[i].find(found);
+                            new_frame = found; // for total_frame_shift
+                            while (total_frame_shift < 1)
+                            {
+                                // calculate shifted position from previous found point
+                                total_frame_shift += move_factor + (found >= new_frame ? found : found + 1) - new_frame;
+                                new_frame = found + move_factor;
+                                if (new_frame > 1) new_frame--;
+
+                                // we know that current point is too close, go for next one
+                                iter++;
+                                if (iter == mDayTracks[i].end())
+                                {
+                                    iter = mDayTracks[i].begin();
+                                }
+
+                                if (((iter->first >= (new_frame - DEFAULT_MULTISLIDER_INCREMENT)) && ((new_frame + DEFAULT_FRAME_SLOP_FACTOR) >= iter->first))
+                                    || ((iter->first < new_frame) && ((new_frame + DEFAULT_FRAME_SLOP_FACTOR) >= (iter->first + 1))))
+                                {
+                                    // we are encroaching at new point as well
+                                    found = iter->first;
+                                }
+                                else // (new_frame + DEFAULT_FRAME_SLOP_FACTOR < iter->first)
+                                {
+                                    //we found clear spot
+                                    break;
+                                }
+                            }
+                        }
+                        else
+                        {
+                            CycleTrack_t::reverse_iterator iter = mDayTracks[i].rbegin();
+                            while (iter->first != found)
+                            {
+                                iter++;
+                            }
+                            new_frame = found; // for total_frame_shift
+                            while (total_frame_shift < 1)
+                            {
+                                // calculate shifted position from current found point
+                                total_frame_shift += move_factor + new_frame - (found <= new_frame ? found : found - 1);
+                                new_frame = found - move_factor;
+                                if (new_frame < 0) new_frame++;
+
+                                // we know that current point is too close, go for next one
+                                iter++;
+                                if (iter == mDayTracks[i].rend())
+                                {
+                                    iter = mDayTracks[i].rbegin();
+                                }
+
+                                if ((iter->first <= (new_frame + DEFAULT_MULTISLIDER_INCREMENT) && (new_frame - DEFAULT_FRAME_SLOP_FACTOR) <= iter->first)
+                                    || ((iter->first > new_frame) && ((new_frame - DEFAULT_FRAME_SLOP_FACTOR) <= (iter->first - 1))))
+                                {
+                                    // we are encroaching at new point as well
+                                    found = iter->first;
+                                }
+                                else // (new_frame - DEFAULT_FRAME_SLOP_FACTOR > iter->first)
+                                {
+                                    //we found clear spot
+                                    break;
+                                }
+                            }
+
+
+                        }
+
+                        if (total_frame_shift >= 1)
+                        {
+                            LL_WARNS("SETTINGS") << "Could not fix frame position, adding as is to position: " << keyframe << LL_ENDL;
+                        }
+                        else
+                        {
+                            // Mark as new position
+                            keyframe = new_frame;
+                        }
+                    }
+                }
+                mDayTracks[i][keyframe] = setting;
+            }
+        }
+    }
+
+    if (!haswater || !hassky)
+    {
+        LL_WARNS("DAYCYCLE") << "Must have at least one water and one sky frame!" << LL_ENDL;
+        return false;
+    }
+    // these are no longer needed and just take up space now.
+    mSettings.erase(SETTING_TRACKS);
+    mSettings.erase(SETTING_FRAMES);
+
+    if (!assetid.isNull())
+    {
+        mSettings[SETTING_ASSETID] = assetid;
+    }
+
+    mInitialized = true;
+    return true;
+}
+
+
+//=========================================================================
+LLSD LLSettingsDay::defaults()
+{
+    static LLSD dfltsetting;
+
+    if (dfltsetting.size() == 0)
+    {
+        dfltsetting[SETTING_NAME] = DEFAULT_SETTINGS_NAME;
+        dfltsetting[SETTING_TYPE] = "daycycle";
+
+        LLSD frames(LLSD::emptyMap());
+        LLSD waterTrack;
+        LLSD skyTrack;
+
+    
+        const U32 FRAME_COUNT = 8;
+        const F32 FRAME_STEP  = 1.0f / F32(FRAME_COUNT);
+        F32 time = 0.0f;
+        for (U32 i = 0; i < FRAME_COUNT; i++)
+        {
+            std::string name(DEFAULT_SETTINGS_NAME);
+            name += ('a' + i);
+
+            std::string water_frame_name("water:");
+            std::string sky_frame_name("sky:");
+
+            water_frame_name += name;
+            sky_frame_name   += name;
+
+            waterTrack[SETTING_KEYKFRAME] = time;
+            waterTrack[SETTING_KEYNAME]   = water_frame_name;
+
+            skyTrack[SETTING_KEYKFRAME] = time;
+            skyTrack[SETTING_KEYNAME]   = sky_frame_name;
+
+            frames[water_frame_name] = LLSettingsWater::defaults(time);
+            frames[sky_frame_name]   = LLSettingsSky::defaults(time);
+
+            time += FRAME_STEP;
+        }
+
+        LLSD tracks;
+        tracks.append(LLSDArray(waterTrack));
+        tracks.append(LLSDArray(skyTrack));
+
+        dfltsetting[SETTING_TRACKS] = tracks;
+        dfltsetting[SETTING_FRAMES] = frames;
+    }
+
+    return dfltsetting;
+}
+
+void LLSettingsDay::blend(const LLSettingsBase::ptr_t &other, F64 mix)
+{
+    LL_ERRS("DAYCYCLE") << "Day cycles are not blendable!" << LL_ENDL;
+}
+
+namespace
+{
+    bool validateDayCycleTrack(LLSD &value)
+    {
+        // Trim extra tracks.
+        while (value.size() > LLSettingsDay::TRACK_MAX)
+        {
+            value.erase(value.size() - 1);
+        }
+
+        S32 framecount(0);
+
+        for (LLSD::array_iterator track = value.beginArray(); track != value.endArray(); ++track)
+        {
+            S32 index = 0;
+            while (index < (*track).size())
+            {
+                LLSD& elem = (*track)[index];
+
+                ++framecount;
+                if (index >= LLSettingsDay::FRAME_MAX)
+                {
+                    (*track).erase(index);
+                    continue;
+                }
+
+                if (!elem.has(LLSettingsDay::SETTING_KEYKFRAME))
+                {
+                    (*track).erase(index);
+                    continue;
+                }
+
+                if (!elem[LLSettingsDay::SETTING_KEYKFRAME].isReal())
+                {
+                    (*track).erase(index);
+                    continue;
+                }
+
+                if (!elem.has(LLSettingsDay::SETTING_KEYNAME) &&
+                    !elem.has(LLSettingsDay::SETTING_KEYID))
+                {
+                    (*track).erase(index);
+                    continue;
+                }
+
+                LLSettingsBase::TrackPosition frame = elem[LLSettingsDay::SETTING_KEYKFRAME].asReal();
+                if ((frame < 0.0) || (frame > 1.0))
+                {
+                    frame = llclamp(frame, 0.0f, 1.0f);
+                    elem[LLSettingsDay::SETTING_KEYKFRAME] = frame;
+                }
+                ++index;
+            }
+
+        }
+
+        int waterTracks = value[0].size();
+        int skyTracks   = framecount - waterTracks;
+
+        if (waterTracks < 1)
+        {
+            LL_WARNS("SETTINGS") << "Missing water track" << LL_ENDL;
+            return false;
+        }
+
+        if (skyTracks < 1)
+        {
+            LL_WARNS("SETTINGS") << "Missing sky tracks" << LL_ENDL;
+            return false;
+        }
+        return true;
+    }
+
+    bool validateDayCycleFrames(LLSD &value)
+    {
+        bool hasSky(false);
+        bool hasWater(false);
+
+        for (LLSD::map_iterator itf = value.beginMap(); itf != value.endMap(); ++itf)
+        {
+            LLSD frame = (*itf).second;
+
+            std::string ftype = frame[LLSettingsBase::SETTING_TYPE];
+            if (ftype == "sky")
+            {
+                LLSettingsSky::validation_list_t valid_sky = LLSettingsSky::validationList();
+                LLSD res_sky = LLSettingsBase::settingValidation(frame, valid_sky);
+                
+                if (res_sky["success"].asInteger() == 0)
+                {
+                    LL_WARNS("SETTINGS") << "Sky setting named '" << (*itf).first << "' validation failed!: " << res_sky << LL_ENDL;
+                    LL_WARNS("SETTINGS") << "Sky: " << frame << LL_ENDL;
+                    continue;
+                }
+                hasSky |= true;
+            }
+            else if (ftype == "water")
+            {
+                LLSettingsWater::validation_list_t valid_h2o = LLSettingsWater::validationList();
+                LLSD res_h2o = LLSettingsBase::settingValidation(frame, valid_h2o);
+                if (res_h2o["success"].asInteger() == 0)
+                {
+                    LL_WARNS("SETTINGS") << "Water setting named '" << (*itf).first << "' validation failed!: " << res_h2o << LL_ENDL;
+                    LL_WARNS("SETTINGS") << "Water: " << frame << LL_ENDL;
+                    continue;
+                }
+                hasWater |= true;
+            }
+            else
+            {
+                LL_WARNS("SETTINGS") << "Unknown settings block of type '" << ftype << "' named '" << (*itf).first << "'" << LL_ENDL;
+                return false;
+            }
+        }
+
+        if (!hasSky)
+        {
+            LL_WARNS("SETTINGS") << "No skies defined." << LL_ENDL;
+            return false;
+        }
+
+        if (!hasWater)
+        {
+            LL_WARNS("SETTINGS") << "No waters defined." << LL_ENDL;
+            return false;
+        }
+
+        return true;
+    }
+}
+
+LLSettingsDay::validation_list_t LLSettingsDay::getValidationList() const
+{
+    return LLSettingsDay::validationList();
+}
+
+LLSettingsDay::validation_list_t LLSettingsDay::validationList()
+{
+    static validation_list_t validation;
+
+    if (validation.empty())
+    {
+        validation.push_back(Validator(SETTING_TRACKS, true, LLSD::TypeArray, 
+            &validateDayCycleTrack));
+        validation.push_back(Validator(SETTING_FRAMES, true, LLSD::TypeMap, 
+            &validateDayCycleFrames));
+    }
+
+    return validation;
+}
+
+LLSettingsDay::CycleTrack_t& LLSettingsDay::getCycleTrack(S32 track)
+{
+    static CycleTrack_t emptyTrack;
+    if (mDayTracks.size() <= track)
+        return emptyTrack;
+
+    return mDayTracks[track];
+}
+
+const LLSettingsDay::CycleTrack_t& LLSettingsDay::getCycleTrackConst(S32 track) const
+{
+    static CycleTrack_t emptyTrack;
+    if (mDayTracks.size() <= track)
+        return emptyTrack;
+
+    return mDayTracks[track];
+}
+
+bool LLSettingsDay::clearCycleTrack(S32 track)
+{
+    if ((track < 0) || (track >= TRACK_MAX))
+    {
+        LL_WARNS("DAYCYCLE") << "Attempt to clear track (#" << track << ") out of range!" << LL_ENDL;
+        return false;
+    }
+    mDayTracks[track].clear();
+    clearAssetId();
+    setDirtyFlag(true);
+    return true;
+}
+
+bool LLSettingsDay::replaceCycleTrack(S32 track, const CycleTrack_t &source)
+{
+    if (source.empty())
+    {
+        LL_WARNS("DAYCYCLE") << "Attempt to copy an empty track." << LL_ENDL;
+        return false;
+    }
+
+    {
+        LLSettingsBase::ptr_t   first((*source.begin()).second);
+        std::string setting_type = first->getSettingsType();
+
+        if (((setting_type == "water") && (track != 0)) ||
+            ((setting_type == "sky") && (track == 0)))
+        {
+            LL_WARNS("DAYCYCLE") << "Attempt to copy track missmatch" << LL_ENDL;
+            return false;
+        }
+    }
+
+    if (!clearCycleTrack(track))
+        return false;
+
+    mDayTracks[track] = source;
+    return true;
+}
+
+
+bool LLSettingsDay::isTrackEmpty(S32 track) const
+{
+    if ((track < 0) || (track >= TRACK_MAX))
+    {
+        LL_WARNS("DAYCYCLE") << "Attempt to test track (#" << track << ") out of range!" << LL_ENDL;
+        return true;
+    }
+
+    return mDayTracks[track].empty();
+}
+
+//=========================================================================
+void LLSettingsDay::startDayCycle()
+{
+    if (!mInitialized)
+    {
+        LL_WARNS("DAYCYCLE") << "Attempt to start day cycle on uninitialized object." << LL_ENDL;
+        return;
+    }
+}
+
+
+void LLSettingsDay::updateSettings()
+{
+}
+
+//=========================================================================
+LLSettingsDay::KeyframeList_t LLSettingsDay::getTrackKeyframes(S32 trackno)
+{
+    if ((trackno < 0) || (trackno >= TRACK_MAX))
+    {
+        LL_WARNS("DAYCYCLE") << "Attempt get track (#" << trackno << ") out of range!" << LL_ENDL;
+        return KeyframeList_t();
+    }
+
+    KeyframeList_t keyframes;
+    CycleTrack_t &track = mDayTracks[trackno];
+
+    keyframes.reserve(track.size());
+
+    for (CycleTrack_t::iterator it = track.begin(); it != track.end(); ++it)
+    {
+        keyframes.push_back((*it).first);
+    }
+
+    return keyframes;
+}
+
+bool LLSettingsDay::moveTrackKeyframe(S32 trackno, const LLSettingsBase::TrackPosition& old_frame, const LLSettingsBase::TrackPosition& new_frame)
+{
+    if ((trackno < 0) || (trackno >= TRACK_MAX))
+    {
+        LL_WARNS("DAYCYCLE") << "Attempt get track (#" << trackno << ") out of range!" << LL_ENDL;
+        return false;
+    }
+
+    if (llabs(old_frame - new_frame) < F_APPROXIMATELY_ZERO)
+    {
+        return false;
+    }
+
+    CycleTrack_t &track = mDayTracks[trackno];
+    CycleTrack_t::iterator iter = track.find(old_frame);
+    if (iter != track.end())
+    {
+        LLSettingsBase::ptr_t base = iter->second;
+        track.erase(iter);
+        track[llclamp(new_frame, 0.0f, 1.0f)] = base;
+        track[new_frame] = base;
+        return true;
+    }
+
+    return false;
+
+}
+
+bool LLSettingsDay::removeTrackKeyframe(S32 trackno, const LLSettingsBase::TrackPosition& frame)
+{
+    if ((trackno < 0) || (trackno >= TRACK_MAX))
+    {
+        LL_WARNS("DAYCYCLE") << "Attempt get track (#" << trackno << ") out of range!" << LL_ENDL;
+        return false;
+    }
+
+    CycleTrack_t &track = mDayTracks[trackno];
+    CycleTrack_t::iterator iter = track.find(frame);
+    if (iter != track.end())
+    {
+        LLSettingsBase::ptr_t base = iter->second;
+        track.erase(iter);
+        return true;
+    }
+
+    return false;
+}
+
+void LLSettingsDay::setWaterAtKeyframe(const LLSettingsWaterPtr_t &water, const LLSettingsBase::TrackPosition& keyframe)
+{
+    setSettingsAtKeyframe(water, keyframe, TRACK_WATER);
+}
+
+LLSettingsWater::ptr_t LLSettingsDay::getWaterAtKeyframe(const LLSettingsBase::TrackPosition& keyframe) const
+{
+    LLSettingsBase* p = getSettingsAtKeyframe(keyframe, TRACK_WATER).get();
+    return LLSettingsWater::ptr_t((LLSettingsWater*)p);
+}
+
+void LLSettingsDay::setSkyAtKeyframe(const LLSettingsSky::ptr_t &sky, const LLSettingsBase::TrackPosition& keyframe, S32 track)
+{
+    if ((track < 1) || (track >= TRACK_MAX))
+    {
+        LL_WARNS("DAYCYCLE") << "Attempt to set sky track (#" << track << ") out of range!" << LL_ENDL;
+        return;
+    }
+
+    setSettingsAtKeyframe(sky, keyframe, track);
+}
+
+LLSettingsSky::ptr_t LLSettingsDay::getSkyAtKeyframe(const LLSettingsBase::TrackPosition& keyframe, S32 track) const
+{
+    if ((track < 1) || (track >= TRACK_MAX))
+    {
+        LL_WARNS("DAYCYCLE") << "Attempt to set sky track (#" << track << ") out of range!" << LL_ENDL;
+        return LLSettingsSky::ptr_t();
+    }
+
+    return PTR_NAMESPACE::dynamic_pointer_cast<LLSettingsSky>(getSettingsAtKeyframe(keyframe, track));
+}
+
+void LLSettingsDay::setSettingsAtKeyframe(const LLSettingsBase::ptr_t &settings, const LLSettingsBase::TrackPosition& keyframe, S32 track)
+{
+    if ((track < 0) || (track >= TRACK_MAX))
+    {
+        LL_WARNS("DAYCYCLE") << "Attempt to set track (#" << track << ") out of range!" << LL_ENDL;
+        return;
+    }
+
+    std::string type = settings->getSettingsType();
+    if ((track == TRACK_WATER) && (type != "water"))
+    {
+        LL_WARNS("DAYCYCLE") << "Attempt to add frame of type '" << type << "' to water track!" << LL_ENDL;
+        llassert(type == "water");
+        return;
+    }
+    else if ((track != TRACK_WATER) && (type != "sky"))
+    {
+        LL_WARNS("DAYCYCLE") << "Attempt to add frame of type '" << type << "' to sky track!" << LL_ENDL;
+        llassert(type == "sky");
+        return;
+    }
+
+    mDayTracks[track][llclamp(keyframe, 0.0f, 1.0f)] = settings;
+    setDirtyFlag(true);
+}
+
+LLSettingsBase::ptr_t LLSettingsDay::getSettingsAtKeyframe(const LLSettingsBase::TrackPosition& keyframe, S32 track) const
+{
+    if ((track < 0) || (track >= TRACK_MAX))
+    {
+        LL_WARNS("DAYCYCLE") << "Attempt to set sky track (#" << track << ") out of range!" << LL_ENDL;
+        return LLSettingsBase::ptr_t();
+    }
+
+    // todo: better way to identify keyframes?
+    CycleTrack_t::const_iterator iter = mDayTracks[track].find(keyframe);
+    if (iter != mDayTracks[track].end())
+    {
+        return iter->second;
+    }
+
+    return LLSettingsBase::ptr_t();
+}
+
+LLSettingsDay::CycleTrack_t::value_type LLSettingsDay::getSettingsNearKeyframe(const LLSettingsBase::TrackPosition &keyframe, S32 track, F32 fudge) const
+{
+    if ((track < 0) || (track >= TRACK_MAX))
+    {
+        LL_WARNS("DAYCYCLE") << "Attempt to get track (#" << track << ") out of range!" << LL_ENDL;
+        return CycleTrack_t::value_type(TrackPosition(INVALID_TRACKPOS), LLSettingsBase::ptr_t());
+    }
+
+    if (mDayTracks[track].empty())
+    {
+        LL_INFOS("DAYCYCLE") << "Empty track" << LL_ENDL;
+        return CycleTrack_t::value_type(TrackPosition(INVALID_TRACKPOS), LLSettingsBase::ptr_t());
+    }
+
+    TrackPosition startframe(keyframe - fudge);
+    if (startframe < 0.0f)
+        startframe = 1.0f + startframe;
+
+    LLSettingsDay::CycleTrack_t collection = const_cast<CycleTrack_t &>(mDayTracks[track]);
+    CycleTrack_t::iterator it = get_wrapping_atafter(collection, startframe);
+
+    F32 dist = get_wrapping_distance(startframe, (*it).first);
+
+    CycleTrack_t::iterator next_it = std::next(it);
+    if ((dist <= DEFAULT_MULTISLIDER_INCREMENT) && next_it != collection.end())
+        return (*next_it);
+    else if (dist <= (fudge * 2.0f))
+        return (*it);
+
+    return CycleTrack_t::value_type(TrackPosition(INVALID_TRACKPOS), LLSettingsBase::ptr_t());
+}
+
+LLSettingsBase::TrackPosition LLSettingsDay::getUpperBoundFrame(S32 track, const LLSettingsBase::TrackPosition& keyframe)
+{
+    return get_wrapping_atafter(mDayTracks[track], keyframe)->first;
+}
+
+LLSettingsBase::TrackPosition LLSettingsDay::getLowerBoundFrame(S32 track, const LLSettingsBase::TrackPosition& keyframe)
+{
+    return get_wrapping_atbefore(mDayTracks[track], keyframe)->first;
+}
+
+LLSettingsDay::TrackBound_t LLSettingsDay::getBoundingEntries(LLSettingsDay::CycleTrack_t &track, const LLSettingsBase::TrackPosition& keyframe)
+{
+    return TrackBound_t(get_wrapping_atbefore(track, keyframe), get_wrapping_atafter(track, keyframe));
+}
+
+LLUUID LLSettingsDay::GetDefaultAssetId()
+{
+    return DEFAULT_ASSET_ID;
+}
+
+//=========================================================================