The Weird and The Wonderful

void set_ptList(int len, int *start)<br />
	{<br />
   int i, z, l;<br />
<br />
   i = 0;<br />
   z = 0;<br />
<br />
	while (i < len)<br />
   	{<br />
<br />
      if (new_settings[3][i] != act_settings[3][i])<br />
      	{<br />
         if (i < (len-1))<br />
         	{<br />
      		if (new_settings[3][i] > act_settings[3][i+1])<br />
         		{<br />
               i++;<br />
               z++;<br />
            	}<br />
         	else<br />
         		{<br />
               for (l = i; l >= i-z; l--)<br />
               	{<br />
                  list[*start][0] = 3;<br />
               	list[*start][1] = l;<br />
                  (*start)++;<br />
                  }<br />
               z = 0;<br />
               i++;<br />
               }<br />
            }<br />
         else<br />
         	{<br />
            l = i;<br />
            i++;<br />
            while (z >= 0)<br />
            	{<br />
               list[*start][0] = 3;<br />
               list[*start][1] = l;<br />
               (*start)++;<br />
               z--;<br />
               l--;<br />
               }<br />
            }<br />
         }<br />
      else<br />
      	{<br />
         i++;<br />
         }<br />
      }<br />
<br />
   }<br />
<br />

...
double cosa = cos( alfa );
double sina = sin( alfa );
for (i=0; i < POINTS; i++)
{
  x[i] = x + (x[i] - x) * cosa - (y[i] - y) * sina;
  y[i] = y + (x[i] - x) * sina + (y[i] - y) * cosa;
}