| author | insilmaril |
| Wed, 16 Jan 2008 15:45:18 +0000 | |
| changeset 653 | 8be6ac05960b |
| parent 617 | 7ee5bf3647d3 |
| child 789 | d85834ad8c54 |
| permissions | -rw-r--r-- |
| insilmaril@139 | 1 |
#include <math.h> |
| insilmaril@139 | 2 |
|
| insilmaril@0 | 3 |
#include <qregexp.h> |
| insilmaril@0 | 4 |
#include <qpoint.h> |
| insilmaril@164 | 5 |
#include <stdlib.h> |
| insilmaril@0 | 6 |
|
| insilmaril@0 | 7 |
#include "misc.h" |
| insilmaril@0 | 8 |
|
| insilmaril@129 | 9 |
QString qpointToString (const QPoint &p) |
| insilmaril@129 | 10 |
{
|
| insilmaril@129 | 11 |
return "(" + QString("%1").arg(p.x()) +","+ QString ("%1").arg (p.y()) +")";
|
| insilmaril@129 | 12 |
} |
| insilmaril@0 | 13 |
|
| insilmaril@408 | 14 |
QString qpointfToString (const QPointF &p) |
| insilmaril@408 | 15 |
{
|
| insilmaril@408 | 16 |
return "(" + QString("%1").arg(p.x()) +","+ QString ("%1").arg (p.y()) +")";
|
| insilmaril@408 | 17 |
} |
| insilmaril@408 | 18 |
|
| insilmaril@0 | 19 |
ostream &operator<< (ostream &stream, QPoint const &p) |
| insilmaril@0 | 20 |
{
|
| insilmaril@366 | 21 |
stream << "("<<p.x()<<","<<p.y()<<")";
|
| insilmaril@366 | 22 |
return stream; |
| insilmaril@0 | 23 |
} |
| insilmaril@0 | 24 |
|
| insilmaril@408 | 25 |
ostream &operator<< (ostream &stream, QPointF const &p) |
| insilmaril@408 | 26 |
{
|
| insilmaril@408 | 27 |
stream << "("<<p.x()<<","<<p.y()<<")";
|
| insilmaril@408 | 28 |
return stream; |
| insilmaril@408 | 29 |
} |
| insilmaril@408 | 30 |
|
| insilmaril@408 | 31 |
qreal getAngle(const QPointF &p) |
| insilmaril@0 | 32 |
{
|
| insilmaril@0 | 33 |
// Calculate angle of vector to y-axis |
| insilmaril@0 | 34 |
if (p.y()==0) |
| insilmaril@0 | 35 |
{
|
| insilmaril@0 | 36 |
if (p.x()>=0) |
| insilmaril@0 | 37 |
return M_PI_2; |
| insilmaril@0 | 38 |
else |
| insilmaril@0 | 39 |
return 3* M_PI_2; |
| insilmaril@0 | 40 |
} else |
| insilmaril@0 | 41 |
{
|
| insilmaril@0 | 42 |
if (p.y()>0) |
| insilmaril@408 | 43 |
return (qreal)(M_PI - atan ( (qreal)(p.x()) / (qreal)(p.y()) ) ); |
| insilmaril@0 | 44 |
else |
| insilmaril@0 | 45 |
if (p.x()<0) |
| insilmaril@408 | 46 |
return (qreal)( 2*M_PI - atan ( (qreal)(p.x()) / (qreal)(p.y()) ) ); |
| insilmaril@0 | 47 |
else |
| insilmaril@408 | 48 |
return (qreal)( - atan ( (qreal)(p.x()) / (qreal)(p.y()) ) ); |
| insilmaril@0 | 49 |
} |
| insilmaril@0 | 50 |
} |
| insilmaril@0 | 51 |
|
| insilmaril@408 | 52 |
QPointF normalise(const QPointF &p) |
| insilmaril@0 | 53 |
{
|
| insilmaril@0 | 54 |
// Calculate normalised position (fixed length) |
| insilmaril@0 | 55 |
|
| insilmaril@408 | 56 |
qreal px=p.x(); |
| insilmaril@408 | 57 |
qreal py=p.y(); |
| insilmaril@408 | 58 |
qreal x; |
| insilmaril@408 | 59 |
qreal y; |
| insilmaril@408 | 60 |
qreal r=150; |
| insilmaril@0 | 61 |
|
| insilmaril@0 | 62 |
if (px==0) |
| insilmaril@0 | 63 |
{
|
| insilmaril@0 | 64 |
x=0; |
| insilmaril@0 | 65 |
if (py>=0) |
| insilmaril@0 | 66 |
y=r; |
| insilmaril@0 | 67 |
else |
| insilmaril@0 | 68 |
y=-r; |
| insilmaril@0 | 69 |
} else |
| insilmaril@0 | 70 |
{
|
| insilmaril@408 | 71 |
qreal sign; |
| insilmaril@408 | 72 |
qreal a; |
| insilmaril@0 | 73 |
if (px>0) |
| insilmaril@0 | 74 |
sign=1; |
| insilmaril@0 | 75 |
else |
| insilmaril@0 | 76 |
sign=-1; |
| insilmaril@0 | 77 |
|
| insilmaril@0 | 78 |
a=atan (py / px); |
| insilmaril@0 | 79 |
x=cos (a) * r *sign; |
| insilmaril@0 | 80 |
y=sin (a) * r *sign; |
| insilmaril@0 | 81 |
} |
| insilmaril@0 | 82 |
return QPoint ((int) (x),(int) (y)); |
| insilmaril@0 | 83 |
} |
| insilmaril@0 | 84 |
|
| insilmaril@166 | 85 |
|
| insilmaril@408 | 86 |
qreal max(qreal a, qreal b) |
| insilmaril@0 | 87 |
{
|
| insilmaril@0 | 88 |
if (a>b) |
| insilmaril@0 | 89 |
return a; |
| insilmaril@0 | 90 |
return b; |
| insilmaril@0 | 91 |
} |
| insilmaril@0 | 92 |