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#include <math.h>
#include <qregexp.h>
#include <qpoint.h>
#include <stdlib.h>
#include "misc.h"
QString qpointToString (const QPoint &p)
{
return "(" + QString("%1").arg(p.x()) +","+ QString ("%1").arg (p.y()) +")";
}
ostream &operator<< (ostream &stream, QPoint const &p)
{
return (stream << qpointToString(p) );
}
float getAngle(const QPoint &p)
{
// Calculate angle of vector to y-axis
if (p.y()==0)
{
if (p.x()>=0)
return M_PI_2;
else
return 3* M_PI_2;
} else
{
if (p.y()>0)
return (float)(M_PI - atan ( (double)(p.x()) / (double)(p.y()) ) );
else
if (p.x()<0)
return (float)( 2*M_PI - atan ( (double)(p.x()) / (double)(p.y()) ) );
else
return (float)( - atan ( (double)(p.x()) / (double)(p.y()) ) );
}
}
QPoint normalise(const QPoint &p)
{
// Calculate normalised position (fixed length)
double px=p.x();
double py=p.y();
double x;
double y;
double r=150;
if (px==0)
{
x=0;
if (py>=0)
y=r;
else
y=-r;
} else
{
double sign;
double a;
if (px>0)
sign=1;
else
sign=-1;
a=atan (py / px);
x=cos (a) * r *sign;
y=sin (a) * r *sign;
}
return QPoint ((int) (x),(int) (y));
}
// returns masked "<" ">" "&"
QString quotemeta(const QString &s)
{
QString r=s;
QRegExp rx("&(?!amp;)");
r.replace ( rx,"&");
rx.setPattern( ">");
r.replace ( rx,">");
rx.setPattern( "<");
r.replace ( rx,"<");
rx.setPattern( "\"");
r.replace ( rx,""");
return r;
}
int max(int a, int b)
{
if (a>b)
return a;
return b;
}
int xmlObj::actindent=0; // make instance of actindent
xmlObj::xmlObj()
{
indentwidth=4;
}
// returns <s at />
QString xmlObj::singleElement(QString s, QString at)
{
return indent() + "<" + s +" " + at +" " + "/>\n";
}
// returns <s>
QString xmlObj::beginElement(QString s)
{
return indent() + "<" + s + ">\n";
}
// returns <s at>
QString xmlObj::beginElement(QString s, QString at)
{
return indent() + "<" + s + " " + at + ">\n";
}
// returns </s>
QString xmlObj::endElement(QString s)
{
return indent() + "</" + s + ">\n";
}
// returns at="val"
QString xmlObj::attribut(QString at, QString val)
{
return " " + at + "=\"" + quotemeta (val) + "\"";
}
// returns <s> val </s>
QString xmlObj::valueElement(QString el, QString val)
{
return indent() + "<" + el + ">" + quotemeta(val) + "</" +el + ">\n";
}
// returns <s at> val </s>
QString xmlObj::valueElement(QString el, QString val, QString at)
{
return indent() + "<" + el + " " + at + ">" + quotemeta(val) + "</" +el + ">\n";
}
void xmlObj::incIndent()
{
actindent++;
}
void xmlObj::decIndent()
{
actindent--;
if (actindent<0) actindent=0;
}
QString xmlObj::indent()
{
QString s;
int i;
for (i=0; i<actindent*indentwidth; i++)
{
s= s + " ";
}
return s;
}
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