bool FGeomObject::FinalizeSourceData()
{
if( !GEditorModeTools().IsModeActive(FBuiltinEditorModes::EM_Geometry) )
{
return 0;
}
ABrush* brush = GetActualBrush();
bool Ret = false;
double StartTime = FPlatformTime::Seconds();
const double TimeLimit = 10.0;
// Remove invalid polygons from the brush
for( int32 x = 0 ; x < brush->Brush->Polys->Element.Num() ; ++x )
{
FPoly* Poly = &brush->Brush->Polys->Element[x];
if( Poly->Vertices.Num() < 3 )
{
brush->Brush->Polys->Element.RemoveAt( x );
x = -1;
}
}
for( int32 p = 0 ; p < brush->Brush->Polys->Element.Num() ; ++p )
{
FPoly* Poly = &(brush->Brush->Polys->Element[p]);
Poly->iLink = p;
int32 SaveNumVertices = Poly->Vertices.Num();
const bool bTimeLimitExpired = TimeLimit < FPlatformTime::Seconds() - StartTime;
if( !Poly->IsCoplanar() || !Poly->IsConvex() )
{
// If the polygon is no longer coplanar and/or convex, break it up into separate triangles.
FPoly WkPoly = *Poly;
brush->Brush->Polys->Element.RemoveAt( p );
TArray<FPoly> Polygons;
if( !bTimeLimitExpired && WkPoly.Triangulate( brush, Polygons ) > 0 )
{
FPoly::OptimizeIntoConvexPolys( brush, Polygons );
for( int32 t = 0 ; t < Polygons.Num() ; ++t )
{
brush->Brush->Polys->Element.Add( Polygons[t] );
}
}
p = -1;
Ret = true;
}
else
{
int32 FixResult = Poly->Fix();
if( FixResult != SaveNumVertices )
{
// If the polygon collapses after running "Fix" against it, it needs to be
// removed from the brushes polygon list.
if( bTimeLimitExpired || FixResult == 0 )
{
brush->Brush->Polys->Element.RemoveAt( p );
}
p = -1;
Ret = true;
}
else
{
// If we get here, the polygon is valid and needs to be kept. Finalize its internals.
Poly->Finalize(brush,1);
}
}
}
if (TimeLimit < FPlatformTime::Seconds() - StartTime)
{
UE_LOG(LogEditorGeometry, Error, TEXT("FGeomObject::FinalizeSourceData() failed because it took too long"));
}
brush->ReregisterAllComponents();
return Ret;
}
