/*@Nonnull*/
private static Point decodeStarpipe(string input, int firstindex, string extrapostfix,
/*@Nonnull*/ Data mapcoderData)
{
// returns Point.isUndefined() in case or error
int storageStart = 0;
int thiscodexlen = mapcoderData.CodexLen;
int value = fastDecode(input); // decode top (before dot)
value *= 961 * 31;
Point triple = decodeTriple(input.Substring(input.Length - 3));
// decode bottom 3 chars
int i;
for (i = firstindex; ; i++)
{
if (Data.CalcCodexLen(i) != thiscodexlen)
{
return(Point.undefined()); // return undefined
}
if (i > firstindex)
{
mapcoderData.dataSetup(i);
}
int maxx = mapcoderData.MapcoderRect.getMaxX();
int maxy = mapcoderData.MapcoderRect.getMaxY();
int minx = mapcoderData.MapcoderRect.getMinX();
int miny = mapcoderData.MapcoderRect.getMinY();
int h = (maxy - miny + 89) / 90;
int xdiv = Common.XDivider(miny, maxy);
int w = ((maxx - minx) * 4 + xdiv - 1) / xdiv;
h = 176 * ((h + 176 - 1) / 176);
w = 168 * ((w + 168 - 1) / 168);
int product = (w / 168) * (h / 176) * 961 * 31;
int goodRounder = mapcoderData.Codex >= 23 ? 961 * 961 * 31 : 961 * 961;
if (mapcoderData.PipeType == 8)
{
// *+
product = ((storageStart + product + goodRounder - 1) / goodRounder) * goodRounder - storageStart;
}
if (value >= storageStart && value < storageStart + product)
{
// code belongs here?
int dividerx = (maxx - minx + w - 1) / w;
int dividery = (maxy - miny + h - 1) / h;
value -= storageStart;
value = value / (961 * 31);
// PIPELETTER DECODE
int vx = value / (h / 176);
vx = vx * 168 + triple.getLonMicroDeg();
int vy = (value % (h / 176)) * 176 + triple.getLatMicroDeg();
int cornery = maxy - vy * dividery;
int cornerx = minx + vx * dividerx;
/*
* Sri Lanka Defect (v1.1)
* {
* int c1 = (zonedata == 0) ? -1 : decode_chars[(int) input .charAt(input.length() - 3)];
* Point zd = addzonedata(cornery + (triple.getY() - 176) dividery,
* cornerx - triple.getX() * dividerx, 176 * dividery, 168 * dividerx, c1, dividerx,
* dividery);
* cornery = zd.getY();
* cornerx = zd.getX();
* }
*/
Point retval = add2res(cornery, cornerx, dividerx << 2, dividery, -1, extrapostfix);
return(retval);
}
storageStart += product;
}
// unreachable
}
