void DistanceAccumulator::pushDistancePair(double zNear, double zFar)
{
if(zFar > 0.0) // Make sure some of drawable is visible
{
// Near plane must be in front of camera. Here, "in front" is defined
// using small epsilon relative to the chosen distance unit.
// This won't present problems with huge/tiny scenes as long as the
// distance unit is chosen properly for the visualized system.
const double epsilon = 1.0e-6;
if(zNear < epsilon) zNear = epsilon;
// Add distance pair for current drawable
_distancePairs.push_back(DistancePair(zNear, zFar));
// Override the current nearest/farthest planes if necessary
if(zNear < _limits.first) _limits.first = zNear;
if(zFar > _limits.second) _limits.second = zFar;
}
}
void CURRENT_CLASS::pushDistancePair(double zNear, double zFar)
{
if(zFar > 0.0) // Make sure some of drawable is visible
{
// Make sure near plane is in front of viewpoint.
if(zNear <= 0.0)
{
zNear = zFar*_nearFarRatio;
if(zNear >= 1.0) zNear = 1.0; // 1.0 limit chosen arbitrarily!
}
// Add distance pair for current drawable
_distancePairs.push_back(DistancePair(zNear, zFar));
// Override the current nearest/farthest planes if necessary
if(zNear < _limits.first) _limits.first = zNear;
if(zFar > _limits.second) _limits.second = zFar;
}
}
