1 files changed, 58 insertions, 24 deletions

diff --git a/indra/newview/llwaterparamset.cpp b/indra/newview/llwaterparamset.cpp
index 3e97f9dbef..9cc91d2246 100644..100755
--- a/indra/newview/llwaterparamset.cpp
+++ b/indra/newview/llwaterparamset.cpp
@@ -2,31 +2,25 @@
  * @file llwaterparamset.cpp
  * @brief Implementation for the LLWaterParamSet class.
  *
- * $LicenseInfo:firstyear=2005&license=viewergpl$
- * 
- * Copyright (c) 2005-2009, Linden Research, Inc.
- * 
+ * $LicenseInfo:firstyear=2005&license=viewerlgpl$
  * 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
+ * Copyright (C) 2010, Linden Research, Inc.
  * 
- * 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
+ * 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.
  * 
- * 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.
+ * 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.
  * 
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
+ * 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
  * $/LicenseInfo$
  */
 
@@ -35,7 +29,6 @@
 #include "llwaterparamset.h"
 #include "llsd.h"
 
-#include "llfloaterwater.h"
 #include "llwaterparammanager.h"
 #include "lluictrlfactory.h"
 #include "llsliderctrl.h"
@@ -192,8 +185,6 @@ LLVector3 LLWaterParamSet::getVector3(const std::string& paramName, bool& error)
 LLVector2 LLWaterParamSet::getVector2(const std::string& paramName, bool& error) 
 {
 	// test to see if right type
-	int ttest;
-	ttest = mParamValues.size();
 	LLSD cur_val = mParamValues.get(paramName);
 	if (!cur_val.isArray() || cur_val.size() != 2) 
 	{
@@ -230,3 +221,46 @@ F32 LLWaterParamSet::getFloat(const std::string& paramName, bool& error)
 	return 0;
 }
 
+// Added for interpolation effect in DEV-33645
+// Based on LLWLParamSet::mix, but written by Jacob without an intimate knowledge of how WindLight works.
+// The function definition existed in the header but was never implemented.  If you think there is something
+// wrong with this, you're probably right.  Ask Jacob, Q, or a member of the original WindLight team.
+void LLWaterParamSet::mix(LLWaterParamSet& src, LLWaterParamSet& dest, F32 weight)
+{
+	// Setup
+	LLSD srcVal, destVal;													// LLSD holders for get/set calls, reusable
+
+	// Iterate through values
+	for(LLSD::map_iterator iter = mParamValues.beginMap(); iter != mParamValues.endMap(); ++iter)
+	{
+		// If param exists in both src and dest, set the holder variables, otherwise skip
+		if(src.mParamValues.has(iter->first) && dest.mParamValues.has(iter->first))
+		{
+			srcVal = src.mParamValues[iter->first];
+			destVal = dest.mParamValues[iter->first];
+		}
+		else
+		{
+			continue;
+		}
+		
+		if(iter->second.isReal())									// If it's a real, interpolate directly
+		{
+			iter->second = srcVal.asReal() + ((destVal.asReal() - srcVal.asReal()) * weight);
+		}		
+		else if(iter->second.isArray() && iter->second[0].isReal()	// If it's an array of reals, loop through the reals and interpolate on those
+				&& iter->second.size() == srcVal.size() && iter->second.size() == destVal.size())
+		{
+			// Actually do interpolation: old value + (difference in values * factor)
+			for(int i=0; i < iter->second.size(); ++i) 
+			{
+				// iter->second[i] = (1.f-weight)*(F32)srcVal[i].asReal() + weight*(F32)destVal[i].asReal();	// old way of doing it -- equivalent but one more operation
+				iter->second[i] = srcVal[i].asReal() + ((destVal[i].asReal() - srcVal[i].asReal()) * weight);
+			}
+		}
+		else														// Else, skip
+		{
+			continue;
+		}
+	}
+}