Subversion Repositories public iLand

/********************************************************************************************

**    iLand - an individual based forest landscape and disturbance model

**    http://iland.boku.ac.at

**    Copyright (C) 2009-  Werner Rammer, Rupert Seidl

**

**    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 3 of the License, or

**    (at your option) any later version.

**

**    This program 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 General Public License for more details.

**

**    You should have received a copy of the GNU General Public License

**    along with this program.  If not, see <http://www.gnu.org/licenses/>.

********************************************************************************************/

#include "global.h"

#include "management.h"

#include "helper.h"

#include "model.h"

#include "resourceunit.h"

#include "tree.h"

#include "expressionwrapper.h"

#include "sapling.h"

#include "soil.h"

//#include "climateconverter.h"

//#include "csvfile.h"

#include "scriptglobal.h"

#include "mapgrid.h"

//#include "modules.h"

#include <QJSEngine>

#include <QJSValue>

/** @class Management Management executes management routines.

  @ingroup core

  The actual iLand management is based on Javascript functions. This class provides

  the frame for executing the javascript as well as the functions that are called by scripts and

  that really do the work.

  See http://iland.boku.ac.at/iLand+scripting, http://iland.boku.ac.at/Object+Management for management Javascript API.

  */

// global output function

QString Management::executeScript(QString cmd)

{

    return ScriptGlobal::executeScript(cmd);

}

Management::Management()

{

    // setup the scripting engine

    mEngine = GlobalSettings::instance()->scriptEngine();

    QJSValue objectValue = mEngine->newQObject(this);

    mEngine->globalObject().setProperty("management", objectValue);

    // default values for removal fractions

    // 100% of the stem, 0% of foliage and branches

    mRemoveFoliage = 0.;

    mRemoveBranch = 0.;

    mRemoveStem = 1.;

}

Management::~Management()

{

}

int Management::remain(int number)

{

    qDebug() << "remain called (number): " << number;

    Model *m = GlobalSettings::instance()->model();

    AllTreeIterator at(m);

    QList<Tree*> trees;

    while (Tree *t=at.next())

        trees.push_back(t);

    int to_kill = trees.count() - number;

    qDebug() << trees.count() << " standing, targetsize" << number << ", hence " << to_kill << "trees to remove";

    for (int i=0;i<to_kill;i++) {

        int index = irandom(0, trees.count()-1);

        trees[index]->remove();

        trees.removeAt(index);

    }

    mRemoved += to_kill;

    return to_kill;

}

int Management::killAll()

{

    int c = mTrees.count();

    for (int i=0;i<mTrees.count();i++)

        mTrees[i].first->remove();

    mTrees.clear();

    return c;

}

int Management::kill(QString filter, double fraction)

{

   return remove_trees(filter, fraction, false);

}

int Management::manage(QString filter, double fraction)

{

    return remove_trees(filter, fraction, true);

}

int Management::remove_percentiles(int pctfrom, int pctto, int number, bool management)

{

    if (mTrees.isEmpty())

        return 0;

    int index_from = limit(int(pctfrom/100. * mTrees.count()), 0, mTrees.count());

    int index_to = limit(int(pctto/100. * mTrees.count()), 0, mTrees.count()-1);

    if (index_from>=index_to)

        return 0;

    qDebug() << "attempting to remove" << number << "trees between indices" << index_from << "and" << index_to;

    int i;

    int count = number;

    if (index_to-index_from <= number)  {

        // kill all

        if (management) {

            // management

            for (i=index_from; i<index_to; i++)

                mTrees.at(i).first->remove(removeFoliage(), removeBranch(), removeStem());

        } else {

            // just kill...

            for (i=index_from; i<index_to; i++)

                mTrees.at(i).first->remove();

        }

        count = index_to - index_from;

    } else {

        // kill randomly the provided number

        int cancel = 1000;

        while(number>=0) {

            int rnd_index = irandom(index_from, index_to);

            if (mTrees[rnd_index].first->isDead()) {

                if (--cancel<0) {

                    qDebug() << "Management::kill: canceling search." << number << "trees left.";

                    count-=number; // not all trees were killed

                    break;

                }

                continue;

            }

            cancel = 1000;

            number--;

            if (management) {

                mTrees[rnd_index].first->remove( removeFoliage(), removeBranch(), removeStem() );

            } else {

                mTrees[rnd_index].first->remove();

            }

        }

    }

    qDebug() << count << "removed.";

    // clean up the tree list...

    for (int i=mTrees.count()-1; i>=0; --i) {

        if (mTrees[i].first->isDead())

            mTrees.removeAt(i);

    }

    return count; // killed or manages

}

/** remove trees from a list and reduce the list.

  */

int Management::remove_trees(QString expression, double fraction, bool management)

{

    TreeWrapper tw;

    Expression expr(expression,&tw);

    expr.enableIncSum();

    int n = 0;

    QList<QPair<Tree*, double> >::iterator tp=mTrees.begin();

    try {

        while (tp!=mTrees.end()) {

            tw.setTree(tp->first);

            // if expression evaluates to true and if random number below threshold...

            if (expr.calculate(tw) && drandom() <=fraction) {

                // remove from system

                if (management)

                    tp->first->remove(removeFoliage(), removeBranch(), removeStem()); // management with removal fractions

                else

                    tp->first->remove(); // kill

                // remove from tree list

                tp = mTrees.erase(tp);

                n++;

            } else {

                ++tp;

            }

        }

    } catch(const IException &e) {

        throwError(e.message());

    }

    return n;

}

// calculate aggregates for all trees in the internal list

double Management::aggregate_function(QString expression, QString filter, QString type)

{

    QList<QPair<Tree*, double> >::iterator tp=mTrees.begin();

    TreeWrapper tw;

    Expression expr(expression,&tw);

    double sum = 0.;

    int n=0;

    try {

        if (filter.isEmpty()) {

            // without filtering

            while (tp!=mTrees.end()) {

                tw.setTree(tp->first);

                sum += expr.calculate();

                ++n;

                ++tp;

            }

        } else {

            // with filtering

            Expression filter_expr(filter,&tw);

            filter_expr.enableIncSum();

            while (tp!=mTrees.end()) {

                tw.setTree(tp->first);

                if (filter_expr.calculate()) {

                    sum += expr.calculate();

                    ++n;

                }

                ++tp;

            }

        }

    } catch(const IException &e) {

        throwError(e.message());

    }

    if (type=="sum")

        return sum;

    if (type=="mean")

        return n>0?sum/double(n):0.;

    return 0.;

}

// introduced with switch to QJSEngine (context->throwMessage not available any more)

void Management::throwError(const QString &errormessage)

{

    GlobalSettings::instance()->scriptEngine()->evaluate(QString("throw '%1'").arg(errormessage));

    // no idea if this works!!!

}

// from the range percentile range pctfrom to pctto (each 1..100)

int Management::killPct(int pctfrom, int pctto, int number)

{

    return remove_percentiles(pctfrom, pctto, number, false);

}

// from the range percentile range pctfrom to pctto (each 1..100)

int Management::managePct(int pctfrom, int pctto, int number)

{

    return remove_percentiles(pctfrom, pctto, number, true);

}

int Management::manageAll()

{

    int c = mTrees.count();

    for (int i=0;i<mTrees.count();i++)

        mTrees[i].first->remove(removeFoliage(),

                                removeBranch(),

                                removeStem()); // remove with current removal fractions

    mTrees.clear();

    return c;

}

void Management::run()

{

    mTrees.clear();

    mRemoved=0;

    qDebug() << "Management::run() called";

    QJSValue mgmt = mEngine->globalObject().property("manage");

    int year = GlobalSettings::instance()->currentYear();

    //mgmt.call(QJSValue(), QScriptValueList()<<year);

    QJSValue result = mgmt.call(QJSValueList() << year);

    if (result.isError())

        qDebug() << "Script Error occured: " << result.toString();//  << "\n" << mEngine->uncaughtExceptionBacktrace();

    if (mRemoved>0) {

        foreach(ResourceUnit *ru, GlobalSettings::instance()->model()->ruList())

           ru->cleanTreeList();

    }

}

void Management::loadScript(const QString &fileName)

{

    mScriptFile = fileName;

    ScriptGlobal::loadScript(fileName);

}

int Management::filter(QVariantList idList)

{

    QVector<int> ids;

    foreach(const QVariant &v, idList)

        if (!v.isNull())

            ids << v.toInt();

//    QHash<int, int> ids;

//    foreach(const QVariant &v, idList)

//        ids[v.toInt()] = 1;

    QList<QPair<Tree*, double> >::iterator tp=mTrees.begin();

    while (tp!=mTrees.end()) {

        if (!ids.contains(tp->first->id()) )

            tp = mTrees.erase(tp);

        else

            ++tp;

    }

    qDebug() << "Management::filter by id-list:" << mTrees.count();

    return mTrees.count();

}

int Management::filter(QString filter)

{

    TreeWrapper tw;

    Expression expr(filter,&tw);

    expr.enableIncSum();

    int n_before = mTrees.count();

    QList<QPair<Tree*, double> >::iterator tp=mTrees.begin();

    try {

        while (tp!=mTrees.end()) {

            tw.setTree(tp->first);

            if (expr.calculate(tw))

                tp = mTrees.erase(tp);

            else

                ++tp;

        }

    } catch(const IException &e) {

        throwError(e.message());

    }

    qDebug() << "filtering with" << filter << "N=" << n_before << "/" << mTrees.count()  << "trees (before/after filtering).";

    return mTrees.count();

}

int Management::loadResourceUnit(int ruindex)

{

    Model *m = GlobalSettings::instance()->model();

    ResourceUnit *ru = m->ru(ruindex);

    if (!ru)

        return -1;

    mTrees.clear();

    for (int i=0;i<ru->trees().count();i++)

        if (!ru->tree(i)->isDead())

            mTrees.push_back(QPair<Tree*,double>(ru->tree(i), 0.));

    return mTrees.count();

}

int Management::load(QString filter)

{

    TreeWrapper tw;

    Model *m = GlobalSettings::instance()->model();

    mTrees.clear();

    AllTreeIterator at(m);

    if (filter.isEmpty()) {

        while (Tree *t=at.nextLiving())

            if (!t->isDead())

                mTrees.push_back(QPair<Tree*, double>(t, 0.));

    } else {

        Expression expr(filter,&tw);

        expr.enableIncSum();

        qDebug() << "filtering with" << filter;

        while (Tree *t=at.nextLiving()) {

            tw.setTree(t);

            if (!t->isDead() && expr.execute())

                mTrees.push_back(QPair<Tree*, double>(t, 0.));

        }

    }

    return mTrees.count();

}

/**

*/

void Management::loadFromTreeList(QList<Tree*>tree_list)

{

    mTrees.clear();

    for (int i=0;i<tree_list.count();++i)

        mTrees.append(QPair<Tree*, double>(tree_list[i], 0.));

}

// loadFromMap: script access

void Management::loadFromMap(MapGridWrapper *wrap, int key)

{

    if (!wrap) {

        throwError("loadFromMap called with invalid map object!");

        return;

    }

    loadFromMap(wrap->map(), key);

}

void Management::killSaplings(MapGridWrapper *wrap, int key)

{

    //MapGridWrapper *wrap = qobject_cast<MapGridWrapper*>(map_grid_object.toQObject());

    //if (!wrap) {

    //    context()->throwError("loadFromMap called with invalid map object!");

    //    return;

    //}

    //loadFromMap(wrap->map(), key);

    // retrieve all sapling trees on the stand:

    QList<QPair<ResourceUnitSpecies *, SaplingTree *> > list = wrap->map()->saplingTrees(key);

    // for now, just kill em all...

    for (QList<QPair<ResourceUnitSpecies *, SaplingTree *> >::iterator it = list.begin(); it!=list.end(); ++it) {

        // (*it).second->pixel = 0;

        (*it).first->changeSapling().clearSapling( *(*it).second, false); // kill and move biomass to soil

    }

    // the storage for unused/invalid saplingtrees is released lazily (once a year, after growth)

}

/// specify removal fractions

/// @param SWDFrac 0: no change, 1: remove all of standing woody debris

/// @param DWDfrac 0: no change, 1: remove all of downled woody debris

/// @param litterFrac 0: no change, 1: remove all of soil litter

/// @param soilFrac 0: no change, 1: remove all of soil organic matter

void Management::removeSoilCarbon(MapGridWrapper *wrap, int key, double SWDfrac, double DWDfrac, double litterFrac, double soilFrac)

{

    if (!(SWDfrac>=0. && SWDfrac<=1. && DWDfrac>=0. && DWDfrac<=1. && soilFrac>=0. && soilFrac<=1. && litterFrac>=0. && litterFrac<=1.)) {

        throwError(QString("removeSoilCarbon called with invalid parameters!!\nArgs: ---"));

        return;

    }

    QList<QPair<ResourceUnit*, double> > ru_areas = wrap->map()->resourceUnitAreas(key);

    double total_area = 0.;

    for (int i=0;i<ru_areas.size();++i) {

        ResourceUnit *ru = ru_areas[i].first;

        double area_factor = ru_areas[i].second; // 0..1

        total_area += area_factor;

        // swd

        if (SWDfrac>0.)

            ru->snag()->removeCarbon(SWDfrac*area_factor);

        // soil pools

        ru->soil()->disturbance(DWDfrac*area_factor, litterFrac*area_factor, soilFrac*area_factor);

        // qDebug() << ru->index() << area_factor;

    }

    qDebug() << "total area" << total_area << "of" << wrap->map()->area(key);

}

/** slash snags (SWD and otherWood-Pools) of polygon \p key on the map \p wrap.

  The factor is scaled to the overlapping area of \p key on the resource unit.

  @param wrap MapGrid to use together with \p key

  @param key ID of the polygon.

  @param slash_fraction 0: no change, 1: 100%

   */

void Management::slashSnags(MapGridWrapper *wrap, int key, double slash_fraction)

{

    if (slash_fraction<0 || slash_fraction>1) {

        throwError(QString("slashSnags called with invalid parameters!!\nArgs: ...."));

        return;

    }

    QList<QPair<ResourceUnit*, double> > ru_areas = wrap->map()->resourceUnitAreas(key);

    double total_area = 0.;

    for (int i=0;i<ru_areas.size();++i) {

        ResourceUnit *ru = ru_areas[i].first;

        double area_factor = ru_areas[i].second; // 0..1

        total_area += area_factor;

        ru->snag()->management(slash_fraction * area_factor);

        // qDebug() << ru->index() << area_factor;

    }

    qDebug() << "total area" << total_area << "of" << wrap->map()->area(key);

}

/** loadFromMap selects trees located on pixels with value 'key' within the grid 'map_grid'.

*/

void Management::loadFromMap(const MapGrid *map_grid, int key)

{

    if (!map_grid) {

        qDebug() << "invalid parameter for Management::loadFromMap: Map expected!";

        return;

    }

    if (map_grid->isValid()) {

        QList<Tree*> tree_list = map_grid->trees(key);

        loadFromTreeList( tree_list );

    } else {

        qDebug() << "Management::loadFromMap: grid is not valid - no trees loaded";

    }

}

bool treePairValue(const QPair<Tree*, double> &p1, const QPair<Tree*, double> &p2)

{

    return p1.second < p2.second;

}

void Management::sort(QString statement)

{

    TreeWrapper tw;

    Expression sorter(statement, &tw);

    // fill the "value" part of the tree storage with a value for each tree

    for (int i=0;i<mTrees.count(); ++i) {

        tw.setTree(mTrees.at(i).first);

        mTrees[i].second = sorter.execute();

   }

   // now sort the list....

   qSort(mTrees.begin(), mTrees.end(), treePairValue);

}

double Management::percentile(int pct)

{

    if (mTrees.count()==0)

        return -1.;

    int idx = int( (pct/100.) * mTrees.count());

    if (idx>=0 && idx<mTrees.count())

        return mTrees.at(idx).second;

    else

        return -1;

}

/// random shuffle of all trees in the list

void Management::randomize()

{

    // fill the "value" part of the tree storage with a random value for each tree

    for (int i=0;i<mTrees.count(); ++i) {

        mTrees[i].second = drandom();

    }

    // now sort the list....

    qSort(mTrees.begin(), mTrees.end(), treePairValue);

}