// See if there's any overlap between the two MBRs
bool trpgMBR::Overlap(const trpg2dPoint &ill, const trpg2dPoint &iur) const
{
if (!isValid()) return false;
trpg2dPoint ilr = trpg2dPoint(iur.x,ill.y);
trpg2dPoint iul = trpg2dPoint(ill.x,iur.y);
// B MBR falls within A
if (Within(ill) || Within(iur) || Within(ilr) || Within(iul))
return true;
// A MBR falls within B
if ((inRange(ill.x,iur.x,ll.x) && inRange(ill.y,iur.y,ll.y)) ||
(inRange(ill.x,iur.x,ur.x) && inRange(ill.y,iur.y,ll.y)) ||
(inRange(ill.x,iur.x,ur.x) && inRange(ill.y,iur.y,ur.y)) ||
(inRange(ill.x,iur.x,ll.x) && inRange(ill.y,iur.y,ur.y)))
return true;
if ((inRange(ll.x,ur.x,ill.x) && ill.y < ll.y && iur.y > ur.y) ||
(inRange(ll.y,ur.y,ill.y) && ill.x < ll.x && iur.x > ur.x))
return true;
return false;
}
// Reset contents
void trpgHeader::Reset()
{
// Initialize to a default state
verMinor = TRPG_VERSION_MINOR;
verMajor = TRPG_VERSION_MAJOR;
dbVerMinor = 0;
dbVerMajor = 0;
origin = trpg3dPoint(0,0,0);
sw = ne = trpg2dPoint(0,0);
tileType = DatabaseLocal;
numLods = 0;
lodSizes.resize(0);
lodRanges.resize(0);
tileSize.resize(0);
maxGroupID = -1;
flags = 0;
errMess[0] = '\0';
cols = -1;
rows = -1;
}
