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/***************************************************************************
* Copyright (C) 2003 by Unai Garro *
* [email protected] *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
***************************************************************************/
#include "propertycalculator.h"
#include <math.h> // For fabs()
#include <kdebug.h>
#include "backends/recipedb.h"
#include "datablocks/elementlist.h"
#include "datablocks/ingredientpropertylist.h"
#include "datablocks/recipe.h"
bool autoConvert( RecipeDB* database, const Ingredient &from, const Ingredient &to, Ingredient &result )
{
RecipeDB::ConversionStatus status = database->convertIngredientUnits( from, to.units, result );
bool converted = status == RecipeDB::Success || status == RecipeDB::MismatchedPrepMethodUsingApprox;
if ( converted ) // There is a ratio
{
double ratio = result.amount / from.amount;
if ( ratio > 1 ) // Convert to unit 1, since unit1 is bigger
{
result.units = from.units;
result.amount = from.amount + to.amount / ratio;
}
else { //Convert to unit2, since unit2 is bigger (just add, units are now correct)
result.amount += to.amount;
}
return true;
}
else
return false;
}
/*
** Version with database I/O. DB must be provided
*/
void calculateProperties( Recipe& recipe, RecipeDB* database )
{
recipe.properties.clear();
// Note that recipePropertyList is not attached to any ingredient. It's just the total of the recipe
IngredientPropertyList ingredientPropertyList; // property list for each ingredient
int ingredientNo = 1;
for ( IngredientList::const_iterator ing_it = recipe.ingList.begin(); ing_it != recipe.ingList.end(); ++ing_it ) {
database->loadProperties( &ingredientPropertyList, ( *ing_it ).ingredientID );
ingredientPropertyList.divide( recipe.yield.amount ); // calculates properties per yield unit
addPropertyToList( database, &recipe.properties, ingredientPropertyList, *ing_it, ingredientNo );
ingredientNo++;
}
}
void addPropertyToList( RecipeDB *database, IngredientPropertyList *recipePropertyList, IngredientPropertyList &ingPropertyList, const Ingredient &ing, int ingredientNo )
{
QMap<int,double> ratioCache; //unit->ratio
IngredientPropertyList::const_iterator prop_it;
for ( prop_it = ingPropertyList.begin(); prop_it != ingPropertyList.end(); ++prop_it ) {
// Find if property was listed before
int pos = recipePropertyList->findIndex( *prop_it );
if ( pos >= 0 ) //Exists. Add to it
{
IngredientPropertyList::iterator rec_property_it = recipePropertyList->at( pos );
Ingredient result;
bool converted;
QMap<int,double>::const_iterator cache_it = ratioCache.find((*prop_it).perUnit.id);
if ( cache_it == ratioCache.end() ) {
RecipeDB::ConversionStatus status = database->convertIngredientUnits( ing, (*prop_it).perUnit, result );
converted = status == RecipeDB::Success || status == RecipeDB::MismatchedPrepMethodUsingApprox;
if ( converted )
ratioCache.insert((*prop_it).perUnit.id,result.amount / ing.amount);
else
ratioCache.insert((*prop_it).perUnit.id,-1);
}
else {
result.units = (*prop_it).perUnit;
result.amount = ing.amount * (*cache_it);
converted = result.amount > 0;
}
if ( converted ) // Could convert units to perUnit
(*rec_property_it).amount += ( (*prop_it).amount ) * result.amount;
}
else // Append new property
{
IngredientProperty property;
property.id = (*prop_it).id;
property.name = (*prop_it).name;
property.perUnit.id = -1; // It's not per unit, it's total sum of the recipe
property.perUnit.name = QString::null; // "
property.units = (*prop_it).units;
Ingredient result;
bool converted;
QMap<int,double>::const_iterator cache_it = ratioCache.find((*prop_it).perUnit.id);
if ( cache_it == ratioCache.end() ) {
RecipeDB::ConversionStatus status = database->convertIngredientUnits( ing, (*prop_it).perUnit, result );
converted = status == RecipeDB::Success || status == RecipeDB::MismatchedPrepMethodUsingApprox;
if ( converted )
ratioCache.insert((*prop_it).perUnit.id,result.amount / ing.amount);
else
ratioCache.insert((*prop_it).perUnit.id,-1);
}
else {
result.units = (*prop_it).perUnit;
result.amount = ing.amount * (*cache_it);
converted = result.amount > 0;
}
if ( converted ) // Could convert units to perUnit
{
property.amount = ( (*prop_it).amount ) * result.amount;
recipePropertyList->append( property );
}
}
}
}
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