/// @todo fixme: Should use the visual plane heights of sector clusters.
static bool middleMaterialCoversOpening(LineSide const &side)
{
if(!side.hasSector()) return false; // Never.
if(!side.hasSections()) return false;
if(!side.middle().hasMaterial()) return false;
MaterialAnimator &matAnimator = side.middle().material().getAnimator(Rend_MapSurfaceMaterialSpec());
// Ensure we have up to date info about the material.
matAnimator.prepare();
// Might the material cover the opening?
if(matAnimator.isOpaque() && !side.middle().blendMode() && side.middle().opacity() >= 1)
{
// Stretched middles always cover the opening.
if(side.isFlagged(SDF_MIDDLE_STRETCH))
return true;
Sector const &frontSec = side.sector();
Sector const *backSec = side.back().sectorPtr();
// Determine the opening between the visual sector planes at this edge.
coord_t openBottom;
if(backSec && backSec->floor().heightSmoothed() > frontSec.floor().heightSmoothed())
{
openBottom = backSec->floor().heightSmoothed();
}
else
{
openBottom = frontSec.floor().heightSmoothed();
}
coord_t openTop;
if(backSec && backSec->ceiling().heightSmoothed() < frontSec.ceiling().heightSmoothed())
{
openTop = backSec->ceiling().heightSmoothed();
}
else
{
openTop = frontSec.ceiling().heightSmoothed();
}
if(matAnimator.dimensions().y >= openTop - openBottom)
{
// Possibly; check the placement.
if(side.leftHEdge()) // possibility of degenerate BSP leaf
{
WallEdge edge(WallSpec::fromMapSide(side, LineSide::Middle),
*side.leftHEdge(), Line::From);
return (edge.isValid() && edge.top().z() > edge.bottom().z()
&& edge.top().z() >= openTop && edge.bottom().z() <= openBottom);
}
}
}
return false;
}
/// @todo fixme: Should use the visual plane heights of sector clusters.
bool R_SideBackClosed(LineSide const &side, bool ignoreOpacity)
{
if(!side.hasSections()) return false;
if(!side.hasSector()) return false;
if(side.line().isSelfReferencing()) return false; // Never.
if(side.considerOneSided()) return true;
Sector const &frontSec = side.sector();
Sector const &backSec = side.back().sector();
if(backSec.floor().heightSmoothed() >= backSec.ceiling().heightSmoothed()) return true;
if(backSec.ceiling().heightSmoothed() <= frontSec.floor().heightSmoothed()) return true;
if(backSec.floor().heightSmoothed() >= frontSec.ceiling().heightSmoothed()) return true;
// Perhaps a middle material completely covers the opening?
if(side.middle().hasMaterial())
{
MaterialAnimator &matAnimator = side.middle().material().getAnimator(Rend_MapSurfaceMaterialSpec());
// Ensure we have up to date info about the material.
matAnimator.prepare();
if(ignoreOpacity || (matAnimator.isOpaque() && !side.middle().blendMode() && side.middle().opacity() >= 1))
{
// Stretched middles always cover the opening.
if(side.isFlagged(SDF_MIDDLE_STRETCH))
return true;
if(side.leftHEdge()) // possibility of degenerate BSP leaf
{
coord_t openRange, openBottom, openTop;
openRange = visOpenRange(side, &openBottom, &openTop);
if(matAnimator.dimensions().y >= openRange)
{
// Possibly; check the placement.
WallEdge edge(WallSpec::fromMapSide(side, LineSide::Middle),
*side.leftHEdge(), Line::From);
return (edge.isValid() && edge.top().z() > edge.bottom().z()
&& edge.top().z() >= openTop && edge.bottom().z() <= openBottom);
}
}
}
}
return false;
}
