vym: misc.cpp@d85834ad8c54

     1 #include <math.h>

     3 #include <qregexp.h>

     4 #include <qpoint.h>

     5 #include <stdlib.h>

     7 #include "misc.h"

     9 QString qpointToString (const QPoint &p)

    10 {

    11 	return "(" + QString("%1").arg(p.x()) +","+ QString ("%1").arg (p.y()) +")";

    12 }

    14 QString qpointfToString (const QPointF &p)

    15 {

    16 	return "(" + QString("%1").arg(p.x()) +","+ QString ("%1").arg (p.y()) +")";

    17 }

    19 ostream &operator<< (ostream &stream, QPoint const &p)

    20 {

    21 	stream << "("<<p.x()<<","<<p.y()<<")";

    22 	return stream;

    23 }

    25 ostream &operator<< (ostream &stream, QPointF const &p)

    26 {

    27 	stream << "("<<p.x()<<","<<p.y()<<")";

    28 	return stream;

    29 }

    31 qreal getAngle(const QPointF &p)

    32 {

    33 	// Calculate angle of vector to y-axis

    34 	if (p.y()==0)

    35 	{

    36 		if (p.x()>=0)

    37 			return M_PI_2;

    38 		else

    39 			return 3* M_PI_2;

    40 	} else

    41 	{

    42 		if (p.y()>0)

    43 			return (qreal)(M_PI  - atan ( (qreal)(p.x()) / (qreal)(p.y()) ) );

    44 		else

    45 			if (p.x()<0)

    46 				return (qreal)( 2*M_PI - atan ( (qreal)(p.x()) / (qreal)(p.y()) ) );

    47 			else

    48 				return (qreal)( - atan ( (qreal)(p.x()) / (qreal)(p.y()) ) );

    49 	}

    50 }

    52 qreal max(qreal a, qreal b)

    53 {

    54 	if (a>b)

    55 		return a;

    56 	return b;

    57 }

author	insilmaril
	Mon, 24 Aug 2009 14:39:07 +0000
changeset 789	d85834ad8c54
parent 617	7ee5bf3647d3
child 792	7d67be709091
permissions	-rw-r--r--