diff --git a/src/Cockpit/panel.cxx b/src/Cockpit/panel.cxx index f04ec8f73..6e78219c8 100644 --- a/src/Cockpit/panel.cxx +++ b/src/Cockpit/panel.cxx @@ -1012,7 +1012,29 @@ FGTextLayer::draw () text_renderer.start3f(0, 0, 0); _now.stamp(); - if (_now - _then > 100000) { + long diff = _now - _then; +#if 0 + // It would be nice to keep this #ifdef'd stuff for (04/18/2002 + + // a couple days) as I verify my solution to the panel text + // drawing problem is actually correct. -CLO + cout << "time diff = " << diff << endl; + if ( _now - _then < 0 ) { + cout << "Eeek, the past is now in the future!" << endl; + cout << "Now = " << _now.get_seconds() << " seconds " + << _now.get_usec() << "usecs" << endl; + cout << "Past = " << _then.get_seconds() << " seconds " + << _then.get_usec() << "usecs" << endl; + exit(-1); + } +#endif + if (diff > 100000 || diff < 0 ) { + // ( diff < 0 ) is a sanity check and indicates our time stamp + // difference math probably overflowed. We can handle a max + // difference of 35.8 minutes since the returned value is in + // usec. So if the panel is left off longer than that we can + // over flow the math with it is turned back on. This (diff < + // 0) catches that situation, get's us out of trouble, and + // back on track. recalc_value(); _then = _now; }