| author | insilmaril |
| Mon Aug 04 13:35:54 2008 +0000 (2008-08-04) | |
| changeset 724 | cf14046909cd |
| parent 413 | c3f7beb4e9f4 |
| child 789 | d85834ad8c54 |
| permissions | -rw-r--r-- |
| insilmaril@139 | 1 |
#include <math.h> |
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|
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#include <qregexp.h> |
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#include <qpoint.h> |
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#include <stdlib.h> |
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|
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#include "misc.h" |
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|
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QString qpointToString (const QPoint &p) |
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{
|
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return "(" + QString("%1").arg(p.x()) +","+ QString ("%1").arg (p.y()) +")";
|
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} |
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|
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QString qpointfToString (const QPointF &p) |
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{
|
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return "(" + QString("%1").arg(p.x()) +","+ QString ("%1").arg (p.y()) +")";
|
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} |
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|
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ostream &operator<< (ostream &stream, QPoint const &p) |
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{
|
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stream << "("<<p.x()<<","<<p.y()<<")";
|
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return stream; |
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} |
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|
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ostream &operator<< (ostream &stream, QPointF const &p) |
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{
|
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stream << "("<<p.x()<<","<<p.y()<<")";
|
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return stream; |
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} |
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|
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qreal getAngle(const QPointF &p) |
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{
|
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// Calculate angle of vector to y-axis |
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if (p.y()==0) |
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{
|
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if (p.x()>=0) |
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return M_PI_2; |
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else |
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return 3* M_PI_2; |
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} else |
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{
|
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if (p.y()>0) |
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return (qreal)(M_PI - atan ( (qreal)(p.x()) / (qreal)(p.y()) ) ); |
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else |
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if (p.x()<0) |
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return (qreal)( 2*M_PI - atan ( (qreal)(p.x()) / (qreal)(p.y()) ) ); |
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else |
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return (qreal)( - atan ( (qreal)(p.x()) / (qreal)(p.y()) ) ); |
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} |
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} |
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|
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QPointF normalise(const QPointF &p) |
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{
|
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// Calculate normalised position (fixed length) |
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|
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qreal px=p.x(); |
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qreal py=p.y(); |
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qreal x; |
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qreal y; |
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qreal r=150; |
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|
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if (px==0) |
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{
|
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x=0; |
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if (py>=0) |
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y=r; |
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else |
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y=-r; |
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} else |
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{
|
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qreal sign; |
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qreal a; |
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if (px>0) |
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sign=1; |
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else |
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sign=-1; |
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|
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a=atan (py / px); |
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x=cos (a) * r *sign; |
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y=sin (a) * r *sign; |
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} |
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return QPoint ((int) (x),(int) (y)); |
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} |
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|
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|
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qreal max(qreal a, qreal b) |
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{
|
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if (a>b) |
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return a; |
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return b; |
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} |
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