/**
* Same as @ref R_OpenRange() but works with the "visual" (i.e., smoothed) plane
* height coordinates rather than the "sharp" coordinates.
*
* @param side Line side to find the open range for.
*
* Return values:
* @param bottom Bottom Z height is written here. Can be @c 0.
* @param top Top Z height is written here. Can be @c 0.
*
* @return Height of the open range.
*
* @todo fixme: Should use the visual plane heights of sector clusters.
*/
static coord_t visOpenRange(LineSide const &side, coord_t *retBottom = 0, coord_t *retTop = 0)
{
Sector const *frontSec = side.sectorPtr();
Sector const *backSec = side.back().sectorPtr();
coord_t bottom;
if(backSec && backSec->floor().heightSmoothed() > frontSec->floor().heightSmoothed())
{
bottom = backSec->floor().heightSmoothed();
}
else
{
bottom = frontSec->floor().heightSmoothed();
}
coord_t top;
if(backSec && backSec->ceiling().heightSmoothed() < frontSec->ceiling().heightSmoothed())
{
top = backSec->ceiling().heightSmoothed();
}
else
{
top = frontSec->ceiling().heightSmoothed();
}
if(retBottom) *retBottom = bottom;
if(retTop) *retTop = top;
return top - bottom;
}
