/** * @file llwlanimator.cpp * @brief Implementation for the LLWLAnimator class. * * $LicenseInfo:firstyear=2007&license=viewergpl$ * * Copyright (c) 2007-2009, Linden Research, Inc. * * Second Life Viewer Source Code * The source code in this file ("Source Code") is provided by Linden Lab * to you under the terms of the GNU General Public License, version 2.0 * ("GPL"), unless you have obtained a separate licensing agreement * ("Other License"), formally executed by you and Linden Lab. Terms of * the GPL can be found in doc/GPL-license.txt in this distribution, or * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2 * * There are special exceptions to the terms and conditions of the GPL as * it is applied to this Source Code. View the full text of the exception * in the file doc/FLOSS-exception.txt in this software distribution, or * online at * http://secondlifegrid.net/programs/open_source/licensing/flossexception * * By copying, modifying or distributing this software, you acknowledge * that you have read and understood your obligations described above, * and agree to abide by those obligations. * * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, * COMPLETENESS OR PERFORMANCE. * $/LicenseInfo$ */ #include "llviewerprecompiledheaders.h" #include "llwlanimator.h" #include "llsky.h" #include "pipeline.h" #include "llwlparammanager.h" LLWLAnimator::LLWLAnimator() : mStartTime(0), mDayRate(1), mDayTime(0), mIsRunning(FALSE), mUseLindenTime(false) { mDayTime = 0; } void LLWLAnimator::update(LLWLParamSet& curParams) { F64 curTime; curTime = getDayTime(); // don't do anything if empty if(mTimeTrack.size() == 0) { return; } // start it off mFirstIt = mTimeTrack.begin(); mSecondIt = mTimeTrack.begin(); mSecondIt++; // grab the two tween iterators while(mSecondIt != mTimeTrack.end() && curTime > mSecondIt->first) { mFirstIt++; mSecondIt++; } // scroll it around when you get to the end if(mSecondIt == mTimeTrack.end() || mFirstIt->first > curTime) { mSecondIt = mTimeTrack.begin(); mFirstIt = mTimeTrack.end(); mFirstIt--; } F32 weight = 0; if(mFirstIt->first < mSecondIt->first) { // get the delta time and the proper weight weight = F32 (curTime - mFirstIt->first) / (mSecondIt->first - mFirstIt->first); // handle the ends } else if(mFirstIt->first > mSecondIt->first) { // right edge of time line if(curTime >= mFirstIt->first) { weight = F32 (curTime - mFirstIt->first) / ((1 + mSecondIt->first) - mFirstIt->first); // left edge of time line } else { weight = F32 ((1 + curTime) - mFirstIt->first) / ((1 + mSecondIt->first) - mFirstIt->first); } // handle same as whatever the last one is } else { weight = 1; } // do the interpolation and set the parameters curParams.mix(LLWLParamManager::instance()->mParamList[mFirstIt->second], LLWLParamManager::instance()->mParamList[mSecondIt->second], weight); } F64 LLWLAnimator::getDayTime() { if(!mIsRunning) { return mDayTime; } if(mUseLindenTime) { F32 phase = gSky.getSunPhase() / F_PI; // we're not solving the non-linear equation that determines sun phase // we're just linearly interpolating between the major points if (phase <= 5.0 / 4.0) { mDayTime = (1.0 / 3.0) * phase + (1.0 / 3.0); } else { mDayTime = phase - (1.0 / 2.0); } if(mDayTime > 1) { mDayTime--; } return mDayTime; } // get the time; mDayTime = (LLTimer::getElapsedSeconds() - mStartTime) / mDayRate; // clamp it if(mDayTime < 0) { mDayTime = 0; } while(mDayTime > 1) { mDayTime--; } return (F32)mDayTime; } void LLWLAnimator::setDayTime(F64 dayTime) { //retroactively set start time; mStartTime = LLTimer::getElapsedSeconds() - dayTime * mDayRate; mDayTime = dayTime; // clamp it if(mDayTime < 0) { mDayTime = 0; } else if(mDayTime > 1) { mDayTime = 1; } } void LLWLAnimator::setTrack(std::map<F32, std::string>& curTrack, F32 dayRate, F64 dayTime, bool run) { mTimeTrack = curTrack; mDayRate = dayRate; setDayTime(dayTime); mIsRunning = run; }