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// SPDX-FileCopyrightText: 2004 Dominique Devriese <devriese@kde.org>
// SPDX-License-Identifier: GPL-2.0-or-later
#include "special_calcers.h"
static const ArgsParser::spec argsspecMeasureTransport[] = {{CircleImp::stype(), I18N_NOOP("Transport a measure on this circle")},
{PointImp::stype(), I18N_NOOP("Project this point onto the circle")},
{SegmentImp::stype(), I18N_NOOP("Segment to transport")}};
static ArgsParser measuretransportargsparser(argsspecMeasureTransport, 3);
std::vector<ObjectCalcer *> MeasureTransportCalcer::parents() const
{
std::vector<ObjectCalcer *> ret;
ret.push_back(mcircle);
ret.push_back(mpoint);
ret.push_back(msegment);
return ret;
}
MeasureTransportCalcer::MeasureTransportCalcer(ObjectCalcer *circle, ObjectCalcer *point, ObjectCalcer *segment)
: mcircle(circle)
, mpoint(point)
, msegment(segment)
, mimp(0)
{
}
MeasureTransportCalcer::~MeasureTransportCalcer()
{
}
void MeasureTransportCalcer::calc(const KigDocument &)
{
if (!measuretransportargsparser.checkArgs(parents()))
return new InvalidImp();
if (!isPointOnCurve(mpoint, mcircle))
return new InvalidImp();
const CircleImp *c = static_cast<const CircleImp *>(mcircle->imp());
const PointImp *p = static_cast<const PointImp *>(mpoint->imp());
const SegmentImp *s = static_cast<const SegmentImp *>(msegment->imp());
double param = c->getParam(p->coordinate(), doc);
double measure = s->length();
measure /= 2 * c->radius() * M_PI;
param += measure;
while (param > 1)
param -= 1;
const Coordinate nc = c->getPoint(param, doc);
if (nc.valid())
return new PointImp(nc);
else
return new InvalidImp;
}
const ObjectImpType *MeasureTransportCalcer::impRequirement(ObjectCalcer *o, const std::vector<ObjectCalcer *> &os) const
{
if (o->imp()->inherits(CircleImp::stype()))
return CircleImp::stype();
else if (o->imp()->inherits(PointImp::stype()))
return PointImp::stype();
else if (o->imp()->inherits(SegmentImp::stype()))
return SegmentImp::stype();
else {
assert(false);
return nullptr;
}
}
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