paysages3d/src/definition/FloatNode.cpp

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#include "FloatNode.h"
#include "PackStream.h"
#include "FloatDiff.h"
#include "Logs.h"
#include <sstream>
#include <cassert>
FloatNode::FloatNode(DefinitionNode* parent, const std::string &name, double value):
DefinitionNode(parent, name, "float"), value(value)
{
}
std::string FloatNode::toString(int indent) const
{
std::ostringstream stream;
stream << DefinitionNode::toString(indent) << " " << value;
return stream.str();
}
void FloatNode::save(PackStream *stream) const
{
stream->write(&value);
}
void FloatNode::load(PackStream *stream)
{
stream->read(&value);
}
void FloatNode::copy(DefinitionNode *destination) const
{
if (destination->getTypeName() == getTypeName())
{
((FloatNode *)destination)->value = value;
}
else
{
Logs::error() << "Can't copy from " << getTypeName() << " to " << destination->getTypeName() << std::endl;
}
}
void FloatNode::setValue(double new_value)
{
addDiff(produceDiff(new_value));
}
const FloatDiff *FloatNode::produceDiff(double new_value) const
{
return new FloatDiff(this, value, new_value);
}
void FloatNode::generateInitDiffs(std::vector<const DefinitionDiff *> *diffs) const
{
diffs->push_back(produceDiff(value));
}
bool FloatNode::applyDiff(const DefinitionDiff *diff, bool backward)
{
if (!DefinitionNode::applyDiff(diff, backward))
{
return false;
}
assert(diff->getTypeName() == "float");
const FloatDiff *float_diff = (const FloatDiff *)diff;
double previous = backward ? float_diff->getNewValue() : float_diff->getOldValue();
double next = backward ? float_diff->getOldValue() : float_diff->getNewValue();
if (value == previous)
{
value = next;
return true;
}
else
{
Logs::error() << "Can't apply float diff " << previous << " => " << next << " to " << getName() << std::endl;
return false;
}
}