/**
 * @file llwaterparamset.cpp
 * @brief Implementation for the LLWaterParamSet class.
 *
 * $LicenseInfo:firstyear=2005&license=viewergpl$
 * 
 * Copyright (c) 2005-2009, 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 "llwaterparamset.h"
#include "llsd.h"

#include "llfloaterwater.h"
#include "llwaterparammanager.h"
#include "lluictrlfactory.h"
#include "llsliderctrl.h"
#include "llviewerimagelist.h"
#include "llviewercontrol.h"
#include "lluuid.h"

#include <llgl.h>

#include <sstream>

LLWaterParamSet::LLWaterParamSet(void) :
	mName("Unnamed Preset")
{
	LLSD vec4;
	LLSD vec3;
	LLSD real(0.0f);

	vec4 = LLSD::emptyArray();
	vec4.append(22.f/255.f);
	vec4.append(43.f/255.f);
	vec4.append(54.f/255.f);
	vec4.append(0.f/255.f);

	vec3 = LLSD::emptyArray();
	vec3.append(2);
	vec3.append(2);
	vec3.append(2);

	LLSD wave1, wave2;
	wave1 = LLSD::emptyArray();
	wave2 = LLSD::emptyArray();
	wave1.append(0.5f);
	wave1.append(-.17f);
	wave2.append(0.58f);
	wave2.append(-.67f);

	mParamValues.insert("waterFogColor", vec4);
	mParamValues.insert("waterFogDensity", 16.0f);
	mParamValues.insert("underWaterFogMod", 0.25f);
	mParamValues.insert("normScale", vec3);
	mParamValues.insert("fresnelScale", 0.5f);
	mParamValues.insert("fresnelOffset", 0.4f);
	mParamValues.insert("scaleAbove", 0.025f);
	mParamValues.insert("scaleBelow", 0.2f);
	mParamValues.insert("blurMultiplier", 0.01f);
	mParamValues.insert("wave1Dir", wave1);
	mParamValues.insert("wave2Dir", wave2);
	mParamValues.insert("normalMap", DEFAULT_WATER_NORMAL);

}

void LLWaterParamSet::set(const std::string& paramName, float x) 
{	
	// handle case where no array
	if(mParamValues[paramName].isReal()) 
	{
		mParamValues[paramName] = x;
	} 
	
	// handle array
	else if(mParamValues[paramName].isArray() &&
			mParamValues[paramName][0].isReal())
	{
		mParamValues[paramName][0] = x;
	}
}

void LLWaterParamSet::set(const std::string& paramName, float x, float y) {
	mParamValues[paramName][0] = x;
	mParamValues[paramName][1] = y;
}

void LLWaterParamSet::set(const std::string& paramName, float x, float y, float z)
{
	mParamValues[paramName][0] = x;
	mParamValues[paramName][1] = y;
	mParamValues[paramName][2] = z;
}

void LLWaterParamSet::set(const std::string& paramName, float x, float y, float z, float w) 
{
	mParamValues[paramName][0] = x;
	mParamValues[paramName][1] = y;
	mParamValues[paramName][2] = z;
	mParamValues[paramName][3] = w;
}

void LLWaterParamSet::set(const std::string& paramName, const float * val) 
{
	mParamValues[paramName][0] = val[0];
	mParamValues[paramName][1] = val[1];
	mParamValues[paramName][2] = val[2];
	mParamValues[paramName][3] = val[3];
}

void LLWaterParamSet::set(const std::string& paramName, const LLVector4 & val) 
{
	mParamValues[paramName][0] = val.mV[0];
	mParamValues[paramName][1] = val.mV[1];
	mParamValues[paramName][2] = val.mV[2];
	mParamValues[paramName][3] = val.mV[3];
}

void LLWaterParamSet::set(const std::string& paramName, const LLColor4 & val) 
{
	mParamValues[paramName][0] = val.mV[0];
	mParamValues[paramName][1] = val.mV[1];
	mParamValues[paramName][2] = val.mV[2];
	mParamValues[paramName][3] = val.mV[3];
}

LLVector4 LLWaterParamSet::getVector4(const std::string& paramName, bool& error) 
{
	
	// test to see if right type
	LLSD cur_val = mParamValues.get(paramName);
	if (!cur_val.isArray() || cur_val.size() != 4) 
	{
		error = true;
		return LLVector4(0,0,0,0);
	}
	
	LLVector4 val;
	val.mV[0] = (F32) cur_val[0].asReal();
	val.mV[1] = (F32) cur_val[1].asReal();
	val.mV[2] = (F32) cur_val[2].asReal();
	val.mV[3] = (F32) cur_val[3].asReal();
	
	error = false;
	return val;
}

LLVector3 LLWaterParamSet::getVector3(const std::string& paramName, bool& error) 
{
	
	// test to see if right type
	LLSD cur_val = mParamValues.get(paramName);
	if (!cur_val.isArray()|| cur_val.size() != 3) 
	{
		error = true;
		return LLVector3(0,0,0);
	}
	
	LLVector3 val;
	val.mV[0] = (F32) cur_val[0].asReal();
	val.mV[1] = (F32) cur_val[1].asReal();
	val.mV[2] = (F32) cur_val[2].asReal();
	
	error = false;
	return val;
}

LLVector2 LLWaterParamSet::getVector2(const std::string& paramName, bool& error) 
{
	// test to see if right type
	LLSD cur_val = mParamValues.get(paramName);
	if (!cur_val.isArray() || cur_val.size() != 2) 
	{
		error = true;
		return LLVector2(0,0);
	}
	
	LLVector2 val;
	val.mV[0] = (F32) cur_val[0].asReal();
	val.mV[1] = (F32) cur_val[1].asReal();
	
	error = false;
	return val;
}

F32 LLWaterParamSet::getFloat(const std::string& paramName, bool& error) 
{
	
	// test to see if right type
	LLSD cur_val = mParamValues.get(paramName);
	if (cur_val.isArray() && cur_val.size() != 0)
	{
		error = false;
		return (F32) cur_val[0].asReal();	
	}
	
	if(cur_val.isReal())
	{
		error = false;
		return (F32) cur_val.asReal();
	}
	
	error = true;
	return 0;
}
void LLWaterParamSet::mix(LLWaterParamSet& src, LLWaterParamSet& dest, F32 weight)
{
	// set up the iterators
	LLSD::map_iterator cIt = mParamValues.beginMap();

	LLSD srcVal;
	LLSD destVal;

	// do the interpolation for all the ones saved as vectors
	// skip the weird ones
	for(; cIt != mParamValues.endMap(); cIt++) {

		// check params to make sure they're actually there
		if(src.mParamValues.has(cIt->first))
		{
			srcVal = src.mParamValues[cIt->first];
		}
		else
		{
			continue;
		}
		
		if(dest.mParamValues.has(cIt->first))
		{
			destVal = dest.mParamValues[cIt->first];
		}
		else
		{
			continue;
		}		
				
		// skip if not a vector
		if(!cIt->second.isArray()) 
		{
			continue;
		}

		// only Real vectors allowed
		if(!cIt->second[0].isReal()) 
		{
			continue;
		}
		
		// make sure all the same size
		if(	cIt->second.size() != srcVal.size() ||
			cIt->second.size() != destVal.size())
		{
			continue;
		}
		
		// more error checking might be necessary;
		
		for(int i=0; i < cIt->second.size(); ++i) 
		{
			cIt->second[i] = (1.0f - weight) * (F32) srcVal[i].asReal() + 
				weight * (F32) destVal[i].asReal();
		}
	}
	mParamValues["waterFogColor"][0] = (1 - weight) * (F32) src.mParamValues["waterFogColor"][0].asReal()
		+ weight * (F32) dest.mParamValues["waterFogColor"][0].asReal();
	mParamValues["waterFogColor"][1] = (1 - weight) * (F32) src.mParamValues["waterFogColor"][1].asReal()
		+ weight * (F32) dest.mParamValues["waterFogColor"][1].asReal();
	mParamValues["waterFogColor"][2] = (1 - weight) * (F32) src.mParamValues["waterFogColor"][2].asReal()
		+ weight * (F32) dest.mParamValues["waterFogColor"][2].asReal();
	mParamValues["waterFogColor"][3] = (1 - weight) * (F32) src.mParamValues["waterFogColor"][3].asReal()
		+ weight * (F32) dest.mParamValues["waterFogColor"][3].asReal();
	
	mParamValues["waterFogDensity"] = (1 - weight) * (F32) src.mParamValues["waterFogDensity"].asReal()
		+ weight * (F32) dest.mParamValues["waterFogDensity"].asReal();
	mParamValues["underWaterFogMod"] = (1 - weight) * (F32) src.mParamValues["underWaterFogMod"].asReal()
		+ weight * (F32) dest.mParamValues["underWaterFogMod"].asReal();
	mParamValues["fresnelScale"] = (1 - weight) * (F32) src.mParamValues["fresnelScale"].asReal()
		+ weight * (F32) dest.mParamValues["fresnelScale"].asReal();
	mParamValues["fresnelOffset"] = (1 - weight) * (F32) src.mParamValues["fresnelOffset"].asReal()
		+ weight * (F32) dest.mParamValues["fresnelOffset"].asReal();
	mParamValues["scaleAbove"] = (1 - weight) * (F32) src.mParamValues["scaleAbove"].asReal()
		+ weight * (F32) dest.mParamValues["scaleAbove"].asReal();
	mParamValues["scaleBelow"] = (1 - weight) * (F32) src.mParamValues["scaleBelow"].asReal()
		+ weight * (F32) dest.mParamValues["scaleBelow"].asReal();
	mParamValues["blurMultiplier"] = (1 - weight) * (F32) src.mParamValues["blurMultiplier"].asReal()
		+ weight * (F32) dest.mParamValues["blurMultiplier"].asReal();
	
	mParamValues["wave2Dir"][0] = (1 - weight) * (F32) src.mParamValues["wave2Dir"][0].asReal()
		+ weight * (F32) dest.mParamValues["wave2Dir"][0].asReal();
	mParamValues["wave2Dir"][1] = (1 - weight) * (F32) src.mParamValues["wave2Dir"][1].asReal()
		+ weight * (F32) dest.mParamValues["wave2Dir"][1].asReal();
	
	mParamValues["wave1Dir"][0] = (1 - weight) * (F32) src.mParamValues["wave1Dir"][0].asReal()
		+ weight * (F32) dest.mParamValues["wave1Dir"][0].asReal();
	mParamValues["wave1Dir"][1] = (1 - weight) * (F32) src.mParamValues["wave1Dir"][1].asReal()
		+ weight * (F32) dest.mParamValues["wave1Dir"][1].asReal();
}