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/**
* @file llsettingsbase.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 "llviewerprecompiledheaders.h"
#include "llsettingsbase.h"
#include "llmath.h"
#include <algorithm>
#include "llsdserialize.h"
namespace
{
const F32 BREAK_POINT = 0.5;
}
//=========================================================================
LLSettingsBase::LLSettingsBase():
mSettings(LLSD::emptyMap()),
mDirty(true)
{
}
LLSettingsBase::LLSettingsBase(const LLSD setting) :
mSettings(setting),
mDirty(true)
{
}
//=========================================================================
void LLSettingsBase::lerpSettings(const LLSettingsBase &other, F32 mix)
{
mSettings = interpolateSDMap(mSettings, other.mSettings, mix);
setDirtyFlag(true);
}
LLSD LLSettingsBase::combineSDMaps(const LLSD &settings, const LLSD &other) const
{
LLSD newSettings;
for (LLSD::map_const_iterator it = settings.beginMap(); it != settings.endMap(); ++it)
{
std::string key_name = (*it).first;
LLSD value = (*it).second;
LLSD::Type setting_type = value.type();
switch (setting_type)
{
case LLSD::TypeMap:
newSettings[key_name] = combineSDMaps(value, LLSD());
break;
case LLSD::TypeArray:
newSettings[key_name] = LLSD::emptyArray();
for (LLSD::array_const_iterator ita = value.beginArray(); ita != value.endArray(); ++ita)
{
newSettings[key_name].append(*ita);
}
break;
default:
newSettings[key_name] = value;
break;
}
}
if (!other.isUndefined())
{
for (LLSD::map_const_iterator it = other.beginMap(); it != other.endMap(); ++it)
{
std::string key_name = (*it).first;
LLSD value = (*it).second;
LLSD::Type setting_type = value.type();
switch (setting_type)
{
case LLSD::TypeMap:
newSettings[key_name] = combineSDMaps(value, LLSD());
break;
case LLSD::TypeArray:
newSettings[key_name] = LLSD::emptyArray();
for (LLSD::array_const_iterator ita = value.beginArray(); ita != value.endArray(); ++ita)
{
newSettings[key_name].append(*ita);
}
break;
default:
newSettings[key_name] = value;
break;
}
}
}
return newSettings;
}
LLSD LLSettingsBase::interpolateSDMap(const LLSD &settings, const LLSD &other, F32 mix) const
{
LLSD newSettings;
stringset_t skip = getSkipInterpolateKeys();
stringset_t slerps = getSlerpKeys();
for (LLSD::map_const_iterator it = settings.beginMap(); it != settings.endMap(); ++it)
{
std::string key_name = (*it).first;
LLSD value = (*it).second;
if (skip.find(key_name) != skip.end())
continue;
if (!other.has(key_name))
{ // The other does not contain this setting, keep the original value
// TODO: Should I blend this out instead?
newSettings[key_name] = value;
continue;
}
LLSD::Type setting_type = value.type();
LLSD other_value = other[key_name];
if (other_value.type() != setting_type)
{
// The data type mismatched between this and other. Hard switch when we pass the break point
// but issue a warning.
LL_WARNS("SETTINGS") << "Setting lerp between mismatched types for '" << key_name << "'." << LL_ENDL;
newSettings[key_name] = (mix > BREAK_POINT) ? other_value : value;
continue;
}
switch (setting_type)
{
case LLSD::TypeInteger:
// lerp between the two values rounding the result to the nearest integer.
newSettings[key_name] = LLSD::Integer(llroundf(lerp(value.asReal(), other_value.asReal(), mix)));
break;
case LLSD::TypeReal:
// lerp between the two values.
newSettings[key_name] = LLSD::Real(lerp(value.asReal(), other_value.asReal(), mix));
break;
case LLSD::TypeMap:
// deep copy.
newSettings[key_name] = interpolateSDMap(value, other_value, mix);
break;
case LLSD::TypeArray:
{
LLSD newvalue(LLSD::emptyArray());
if (slerps.find(key_name) != slerps.end())
{
LLQuaternion q = slerp(mix, LLQuaternion(value), LLQuaternion(other_value));
newvalue = q.getValue();
}
else
{ // TODO: We could expand this to inspect the type and do a deep lerp based on type.
// for now assume a heterogeneous array of reals.
size_t len = std::max(value.size(), other_value.size());
for (size_t i = 0; i < len; ++i)
{
newvalue[i] = lerp(value[i].asReal(), other_value[i].asReal(), mix);
}
}
newSettings[key_name] = newvalue;
}
break;
// case LLSD::TypeBoolean:
// case LLSD::TypeString:
// case LLSD::TypeUUID:
// case LLSD::TypeURI:
// case LLSD::TypeBinary:
// case LLSD::TypeDate:
default:
// atomic or unknown data types. Lerping between them does not make sense so switch at the break.
newSettings[key_name] = (mix > BREAK_POINT) ? other_value : value;
break;
}
}
// Now add anything that is in other but not in the settings
for (LLSD::map_const_iterator it = other.beginMap(); it != other.endMap(); ++it)
{
// TODO: Should I blend this in instead?
if (skip.find((*it).first) == skip.end())
continue;
if (!settings.has((*it).first))
continue;
newSettings[(*it).first] = (*it).second;
}
return newSettings;
}
void LLSettingsBase::exportSettings(std::string name) const
{
LLSD exprt = LLSDMap("type", LLSD::String(getSettingType()))
("name", LLSD::String(name))
("settings", mSettings);
std::string path_name = gDirUtilp->getExpandedFilename(LL_PATH_DUMP, name + ".settings");
// write to file
llofstream presetsXML(path_name.c_str());
if (presetsXML.is_open())
{
LLPointer<LLSDFormatter> formatter = new LLSDXMLFormatter();
formatter->format(exprt, presetsXML, LLSDFormatter::OPTIONS_PRETTY);
presetsXML.close();
LL_DEBUGS() << "saved preset '" << name << "'; " << mSettings.size() << " settings" << LL_ENDL;
}
else
{
LL_WARNS("Presets") << "Cannot open for output preset file " << path_name << LL_ENDL;
}
}
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