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misc.cpp
author insilmaril
Wed, 09 Jun 2010 13:14:08 +0000
changeset 847 43268373032d
parent 819 8f987e376035
permissions -rw-r--r--
1.13.4 Various fixes 
     1 #include <math.h>

     2 

     3 #include <qregexp.h>

     4 #include <stdlib.h>

     5 

     6 #include "misc.h"

     7 

     8 #include "geometry.h"

     9 

    10 QString qpointToString (const QPoint &p)

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

    12 

    13 QString qpointFToString (const QPointF &p)

    14 { return "(" + QString("%1").arg(p.x()) +","+ QString ("%1").arg (p.y()) +")"; }

    15 

    16 QString VectorToString (const Vector &p)

    17 { return "(" + QString("%1").arg(p.x()) +","+ QString ("%1").arg (p.y()) +")"; }

    18 

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

    20 { 

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

    22 	return stream;

    23 }

    24 

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

    26 { 

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

    28 	return stream;

    29 }

    30 

    31 ostream &operator<< (ostream &stream, QRectF const &r)

    32 { 

    33 	stream << "tL="<<r.topLeft()<<" - (w,h)="<<r.width()<<","<<r.height()<<"  bR="<<r.bottomRight();

    34 	return stream;

    35 }

    36 

    37 ostream &operator<< (ostream &stream, Vector const &p)

    38 { 

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

    40 	return stream;

    41 }

    42 

    43 qreal getAngle(const QPointF &p)

    44 {	

    45 	// Calculate angle of vector to y-axis

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

    47 	{

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

    49 			return M_PI_2;

    50 		else

    51 			return 3* M_PI_2;

    52 	} else

    53 	{

    54 		if (p.y()>0) 

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

    56 		else	

    57 			if (p.x()<0)

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

    59 			else	

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

    61 	}	

    62 }

    63 

    64 qreal max(qreal a, qreal b)

    65 {

    66 	if (a>b)

    67 		return a;

    68 	return b;

    69 }

    70
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