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#include <QtTest/QtTest>

#include <qpolygon.h>

#include <qpainterpath.h>

#include <math.h>

#include <qpainter.h>

#include <qdialog.h>

//TESTED_CLASS=

//TESTED_FILES=gui/painting/qpolygon.h gui/painting/qpolygon.cpp

class tst_QPolygon : public QObject

{

    Q_OBJECT

public:

    tst_QPolygon();

private slots:

    void makeEllipse();

};

tst_QPolygon::tst_QPolygon()

{

}

void tst_QPolygon::makeEllipse()

{

    // create an ellipse with R1 = R2 = R, i.e. a circle

    QPolygon pa;

    const int R = 50; // radius

    QPainterPath path;

    path.addEllipse(0, 0, 2*R, 2*R);

    pa = path.toSubpathPolygons().at(0).toPolygon();

    int i;

    // make sure that all points are R+-1 away from the center

    bool err = FALSE;

    for (i = 1; i < pa.size(); i++) {

	QPoint p = pa.at( i );

	double r = sqrt( pow( double(p.x() - R), 2.0 ) + pow( double(p.y() - R), 2.0 ) );

	// ### too strict ? at least from visual inspection it looks

	// quite odd around the main axes. 2.0 passes easily.

	err |= ( qAbs( r - double(R) ) > 2.0 );

    }

    QVERIFY( !err );

}

QTEST_APPLESS_MAIN(tst_QPolygon)

#include "tst_qpolygon.moc"