void FSimpleElementCollector::SetHitProxy(HHitProxy* HitProxy)
{
if (HitProxy)
{
HitProxyId = HitProxy->Id;
}
else
{
HitProxyId = FHitProxyId();
}
}
virtual void DrawMesh(const FMeshBatch& Mesh, float ScreenSize)
{
if (Mesh.GetNumPrimitives() > 0)
{
check(Mesh.VertexFactory);
check(Mesh.VertexFactory->IsInitialized());
#if DO_CHECK
Mesh.CheckUniformBuffers();
#endif
FStaticMesh* StaticMesh = new(PrimitiveSceneInfo->StaticMeshes) FStaticMesh(
PrimitiveSceneInfo,
Mesh,
ScreenSize,
CurrentHitProxy ? CurrentHitProxy->Id : FHitProxyId()
);
}
}
virtual void DrawMesh(
const FMeshBatch& Mesh,
float MinDrawDistance,
float MaxDrawDistance,
bool bShadowOnly
)
{
check(Mesh.GetNumPrimitives() > 0);
check(Mesh.VertexFactory);
check(Mesh.VertexFactory->IsInitialized());
#if DO_CHECK
Mesh.CheckUniformBuffers();
#endif
FStaticMesh* StaticMesh = new(PrimitiveSceneInfo->StaticMeshes) FStaticMesh(
PrimitiveSceneInfo,
Mesh,
FMath::Square(FMath::Max(0.0f,MinDrawDistance)),
FMath::Square(FMath::Max(0.0f,MaxDrawDistance)),
bShadowOnly,
CurrentHitProxy ? CurrentHitProxy->Id : FHitProxyId()
);
}
void UNavMeshRenderingComponent::GatherData(struct FNavMeshSceneProxyData* CurrentData) const
{
#if WITH_RECAST
const ARecastNavMesh* NavMesh = Cast<ARecastNavMesh>(GetOwner());
CurrentData->Reset();
CurrentData->bEnableDrawing = NavMesh->bEnableDrawing;
CurrentData->bNeedsNewData = false;
if (CurrentData && NavMesh && NavMesh->bEnableDrawing)
{
FHitProxyId HitProxyId = FHitProxyId();
CurrentData->bDrawPathCollidingGeometry = NavMesh->bDrawPathCollidingGeometry;
CurrentData->NavMeshDrawOffset.Z = NavMesh->DrawOffset;
CurrentData->NavMeshGeometry.bGatherPolyEdges = NavMesh->bDrawPolyEdges;
CurrentData->NavMeshGeometry.bGatherNavMeshEdges = NavMesh->bDrawNavMeshEdges;
const FNavDataConfig& NavConfig = NavMesh->GetConfig();
CurrentData->NavMeshColors[RECAST_DEFAULT_AREA] = NavConfig.Color.DWColor() > 0 ? NavConfig.Color : NavMeshRenderColor_RecastMesh;
for (uint8 i = 0; i < RECAST_DEFAULT_AREA; ++i)
{
CurrentData->NavMeshColors[i] = NavMesh->GetAreaIDColor(i);
}
// just a little trick to make sure navmeshes with different sized are not drawn with same offset
CurrentData->NavMeshDrawOffset.Z += NavMesh->GetConfig().AgentRadius / 10.f;
NavMesh->BeginBatchQuery();
if (NavMesh->bDrawOctree)
{
const UNavigationSystem* NavSys = UNavigationSystem::GetCurrent(GetWorld());
const FNavigationOctree* NavOctree = NavSys ? NavSys->GetNavOctree() : NULL;
if (NavOctree)
{
for (FNavigationOctree::TConstIterator<> NodeIt(*NavOctree); NodeIt.HasPendingNodes(); NodeIt.Advance())
{
const FNavigationOctree::FNode& CurrentNode = NodeIt.GetCurrentNode();
const FOctreeNodeContext& CorrentContext = NodeIt.GetCurrentContext();
CurrentData->OctreeBounds.Add(CorrentContext.Bounds);
FOREACH_OCTREE_CHILD_NODE(ChildRef)
{
if (CurrentNode.HasChild(ChildRef))
{
NodeIt.PushChild(ChildRef);
}
}
}
}
}
NavMesh->GetDebugGeometry(CurrentData->NavMeshGeometry);
const TArray<FVector>& MeshVerts = CurrentData->NavMeshGeometry.MeshVerts;
// @fixme, this is going to double up on lots of interior lines
if (NavMesh->bDrawTriangleEdges)
{
for (int32 AreaIdx = 0; AreaIdx < RECAST_MAX_AREAS; ++AreaIdx)
{
const TArray<int32>& MeshIndices = CurrentData->NavMeshGeometry.AreaIndices[AreaIdx];
for (int32 Idx=0; Idx<MeshIndices.Num(); Idx += 3)
{
CurrentData->ThickLineItems.Add(FNavMeshSceneProxyData::FDebugThickLine(MeshVerts[MeshIndices[Idx + 0]] + CurrentData->NavMeshDrawOffset, MeshVerts[MeshIndices[Idx + 1]] + CurrentData->NavMeshDrawOffset, NavMeshRenderColor_Recast_TriangleEdges, DefaultEdges_LineThickness));
CurrentData->ThickLineItems.Add(FNavMeshSceneProxyData::FDebugThickLine(MeshVerts[MeshIndices[Idx + 1]] + CurrentData->NavMeshDrawOffset, MeshVerts[MeshIndices[Idx + 2]] + CurrentData->NavMeshDrawOffset, NavMeshRenderColor_Recast_TriangleEdges, DefaultEdges_LineThickness));
CurrentData->ThickLineItems.Add(FNavMeshSceneProxyData::FDebugThickLine(MeshVerts[MeshIndices[Idx + 2]] + CurrentData->NavMeshDrawOffset, MeshVerts[MeshIndices[Idx + 0]] + CurrentData->NavMeshDrawOffset, NavMeshRenderColor_Recast_TriangleEdges, DefaultEdges_LineThickness));
}
}
}
// make lines for tile edges
if (NavMesh->bDrawPolyEdges)
{
const TArray<FVector>& TileEdgeVerts = CurrentData->NavMeshGeometry.PolyEdges;
for (int32 Idx=0; Idx < TileEdgeVerts.Num(); Idx += 2)
{
CurrentData->TileEdgeLines.Add( FDebugRenderSceneProxy::FDebugLine(TileEdgeVerts[Idx] + CurrentData->NavMeshDrawOffset, TileEdgeVerts[Idx+1] + CurrentData->NavMeshDrawOffset, NavMeshRenderColor_Recast_TileEdges));
}
}
// make lines for navmesh edges
if (NavMesh->bDrawNavMeshEdges)
{
const FColor EdgesColor = DarkenColor(CurrentData->NavMeshColors[RECAST_DEFAULT_AREA]);
const TArray<FVector>& NavMeshEdgeVerts = CurrentData->NavMeshGeometry.NavMeshEdges;
for (int32 Idx=0; Idx < NavMeshEdgeVerts.Num(); Idx += 2)
{
CurrentData->NavMeshEdgeLines.Add( FDebugRenderSceneProxy::FDebugLine(NavMeshEdgeVerts[Idx] + CurrentData->NavMeshDrawOffset, NavMeshEdgeVerts[Idx+1] + CurrentData->NavMeshDrawOffset, EdgesColor));
}
}
// offset all navigation-link positions
if (!NavMesh->bDrawClusters)
{
for (int32 OffMeshLineIndex = 0; OffMeshLineIndex < CurrentData->NavMeshGeometry.OffMeshLinks.Num(); ++OffMeshLineIndex)
{
FRecastDebugGeometry::FOffMeshLink& Link = CurrentData->NavMeshGeometry.OffMeshLinks[OffMeshLineIndex];
const bool bLinkValid = (Link.ValidEnds & FRecastDebugGeometry::OMLE_Left) && (Link.ValidEnds & FRecastDebugGeometry::OMLE_Right);
if (NavMesh->bDrawFailedNavLinks || (NavMesh->bDrawNavLinks && bLinkValid))
{
const FVector V0 = Link.Left + CurrentData->NavMeshDrawOffset;
const FVector V1 = Link.Right + CurrentData->NavMeshDrawOffset;
const FColor LinkColor = ((Link.Direction && Link.ValidEnds) || (Link.ValidEnds & FRecastDebugGeometry::OMLE_Left)) ? DarkenColor(CurrentData->NavMeshColors[Link.AreaID]) : NavMeshRenderColor_OffMeshConnectionInvalid;
CacheArc(CurrentData->NavLinkLines, V0, V1, 0.4f, 4, LinkColor, LinkLines_LineThickness);
const FVector VOffset(0, 0, FVector::Dist(V0, V1) * 1.333f);
CacheArrowHead(CurrentData->NavLinkLines, V1, V0+VOffset, 30.f, LinkColor, LinkLines_LineThickness);
if (Link.Direction)
{
CacheArrowHead(CurrentData->NavLinkLines, V0, V1+VOffset, 30.f, LinkColor, LinkLines_LineThickness);
}
// if the connection as a whole is valid check if there are any of ends is invalid
if (LinkColor != NavMeshRenderColor_OffMeshConnectionInvalid)
{
if (Link.Direction && (Link.ValidEnds & FRecastDebugGeometry::OMLE_Left) == 0)
{
// left end invalid - mark it
DrawWireCylinder(CurrentData->NavLinkLines, V0, FVector(1,0,0), FVector(0,1,0), FVector(0,0,1), NavMeshRenderColor_OffMeshConnectionInvalid, Link.Radius, NavMesh->AgentMaxStepHeight, 16, 0, DefaultEdges_LineThickness);
}
if ((Link.ValidEnds & FRecastDebugGeometry::OMLE_Right) == 0)
{
DrawWireCylinder(CurrentData->NavLinkLines, V1, FVector(1,0,0), FVector(0,1,0), FVector(0,0,1), NavMeshRenderColor_OffMeshConnectionInvalid, Link.Radius, NavMesh->AgentMaxStepHeight, 16, 0, DefaultEdges_LineThickness);
}
}
}
}
}
if (NavMesh->bDrawTileLabels || NavMesh->bDrawPolygonLabels || NavMesh->bDrawDefaultPolygonCost || NavMesh->bDrawTileBounds)
{
// calculate appropriate points for displaying debug labels
const int32 TilesCount = NavMesh->GetNavMeshTilesCount();
CurrentData->DebugLabels.Reserve(TilesCount);
for (int32 TileIndex = 0; TileIndex < TilesCount; ++TileIndex)
{
int32 X, Y, Layer;
if (NavMesh->GetNavMeshTileXY(TileIndex, X, Y, Layer))
{
const FBox TileBoundingBox = NavMesh->GetNavMeshTileBounds(TileIndex);
FVector TileLabelLocation = TileBoundingBox.GetCenter();
TileLabelLocation.Z = TileBoundingBox.Max.Z;
FNavLocation NavLocation(TileLabelLocation);
if (!NavMesh->ProjectPoint(TileLabelLocation, NavLocation, FVector(NavMesh->TileSizeUU/100, NavMesh->TileSizeUU/100, TileBoundingBox.Max.Z-TileBoundingBox.Min.Z)))
{
NavMesh->ProjectPoint(TileLabelLocation, NavLocation, FVector(NavMesh->TileSizeUU/2, NavMesh->TileSizeUU/2, TileBoundingBox.Max.Z-TileBoundingBox.Min.Z));
}
if (NavMesh->bDrawTileLabels)
{
CurrentData->DebugLabels.Add(FNavMeshSceneProxyData::FDebugText(
/*Location*/NavLocation.Location + CurrentData->NavMeshDrawOffset
, /*Text*/FString::Printf(TEXT("(%d,%d:%d)"), X, Y, Layer)
));
}
if (NavMesh->bDrawPolygonLabels || NavMesh->bDrawDefaultPolygonCost)
{
TArray<FNavPoly> Polys;
NavMesh->GetPolysInTile(TileIndex, Polys);
if (NavMesh->bDrawDefaultPolygonCost)
{
float DefaultCosts[RECAST_MAX_AREAS];
float FixedCosts[RECAST_MAX_AREAS];
NavMesh->GetDefaultQueryFilter()->GetAllAreaCosts(DefaultCosts, FixedCosts, RECAST_MAX_AREAS);
for(int k = 0; k < Polys.Num(); ++k)
{
uint32 AreaID = NavMesh->GetPolyAreaID(Polys[k].Ref);
CurrentData->DebugLabels.Add(FNavMeshSceneProxyData::FDebugText(
/*Location*/Polys[k].Center + CurrentData->NavMeshDrawOffset
, /*Text*/FString::Printf(TEXT("\\%.3f; %.3f\\"), DefaultCosts[AreaID], FixedCosts[AreaID])
));
}
}
else
{
for(int k = 0; k < Polys.Num(); ++k)
{
uint32 NavPolyIndex = 0;
uint32 NavTileIndex = 0;
NavMesh->GetPolyTileIndex(Polys[k].Ref, NavPolyIndex, NavTileIndex);
CurrentData->DebugLabels.Add(FNavMeshSceneProxyData::FDebugText(
/*Location*/Polys[k].Center + CurrentData->NavMeshDrawOffset
, /*Text*/FString::Printf(TEXT("[%X:%X]"), NavTileIndex, NavPolyIndex)
));
}
}
}
if (NavMesh->bDrawTileBounds)
{
FBox TileBox = NavMesh->GetNavMeshTileBounds(TileIndex);
float DrawZ = (TileBox.Min.Z + TileBox.Max.Z) * 0.5f; // @hack average
FVector LL(TileBox.Min.X, TileBox.Min.Y, DrawZ);
FVector UR(TileBox.Max.X, TileBox.Max.Y, DrawZ);
FVector UL(LL.X, UR.Y, DrawZ);
FVector LR(UR.X, LL.Y, DrawZ);
CurrentData->ThickLineItems.Add(FNavMeshSceneProxyData::FDebugThickLine(LL, UL, NavMeshRenderColor_TileBounds, DefaultEdges_LineThickness));
CurrentData->ThickLineItems.Add(FNavMeshSceneProxyData::FDebugThickLine(UL, UR, NavMeshRenderColor_TileBounds, DefaultEdges_LineThickness));
CurrentData->ThickLineItems.Add(FNavMeshSceneProxyData::FDebugThickLine(UR, LR, NavMeshRenderColor_TileBounds, DefaultEdges_LineThickness));
CurrentData->ThickLineItems.Add(FNavMeshSceneProxyData::FDebugThickLine(LR, LL, NavMeshRenderColor_TileBounds, DefaultEdges_LineThickness));
}
}
}
}
CurrentData->bSkipDistanceCheck = GIsEditor && (GEngine->GetDebugLocalPlayer() == NULL);
CurrentData->bDrawClusters = NavMesh->bDrawClusters;
NavMesh->FinishBatchQuery();
// Draw Mesh
if (NavMesh->bDrawClusters)
{
for (int32 Idx = 0; Idx < CurrentData->NavMeshGeometry.Clusters.Num(); ++Idx)
{
const TArray<int32>& MeshIndices = CurrentData->NavMeshGeometry.Clusters[Idx].MeshIndices;
if (MeshIndices.Num() == 0)
{
continue;
}
FNavMeshSceneProxyData::FDebugMeshData DebugMeshData;
DebugMeshData.ClusterColor = GetClusterColor(Idx);
for (int32 VertIdx=0; VertIdx < MeshVerts.Num(); ++VertIdx)
{
AddVertexHelper(DebugMeshData, MeshVerts[VertIdx] + CurrentData->NavMeshDrawOffset, DebugMeshData.ClusterColor);
}
for (int32 TriIdx=0; TriIdx < MeshIndices.Num(); TriIdx+=3)
{
AddTriangleHelper(DebugMeshData, MeshIndices[TriIdx], MeshIndices[TriIdx+1], MeshIndices[TriIdx+2]);
}
CurrentData->MeshBuilders.Add(DebugMeshData);
}
}
else if (NavMesh->bDrawNavMesh)
{
for (int32 AreaType = 0; AreaType < RECAST_MAX_AREAS; ++AreaType)
{
const TArray<int32>& MeshIndices = CurrentData->NavMeshGeometry.AreaIndices[AreaType];
if (MeshIndices.Num() == 0)
{
continue;
}
FNavMeshSceneProxyData::FDebugMeshData DebugMeshData;
for (int32 VertIdx=0; VertIdx < MeshVerts.Num(); ++VertIdx)
{
AddVertexHelper(DebugMeshData, MeshVerts[VertIdx] + CurrentData->NavMeshDrawOffset, CurrentData->NavMeshColors[AreaType]);
}
for (int32 TriIdx=0; TriIdx < MeshIndices.Num(); TriIdx+=3)
{
AddTriangleHelper(DebugMeshData, MeshIndices[TriIdx], MeshIndices[TriIdx+1], MeshIndices[TriIdx+2]);
}
DebugMeshData.ClusterColor = CurrentData->NavMeshColors[AreaType];
CurrentData->MeshBuilders.Add(DebugMeshData);
}
}
if (NavMesh->bDrawPathCollidingGeometry)
{
// draw all geometry gathered in navoctree
const FNavigationOctree* NavOctree = NavMesh->GetWorld()->GetNavigationSystem()->GetNavOctree();
TArray<FVector> PathCollidingGeomVerts;
TArray <int32> PathCollidingGeomIndices;
for (FNavigationOctree::TConstIterator<> It(*NavOctree); It.HasPendingNodes(); It.Advance())
{
const FNavigationOctree::FNode& Node = It.GetCurrentNode();
for (FNavigationOctree::ElementConstIt ElementIt(Node.GetElementIt()); ElementIt; ElementIt++)
{
const FNavigationOctreeElement& Element = *ElementIt;
if (Element.ShouldUseGeometry(&NavMesh->NavDataConfig) && Element.Data.CollisionData.Num())
{
const FRecastGeometryCache CachedGeometry(Element.Data.CollisionData.GetData());
AppendGeometry(PathCollidingGeomVerts, PathCollidingGeomIndices, CachedGeometry.Verts, CachedGeometry.Header.NumVerts, CachedGeometry.Indices, CachedGeometry.Header.NumFaces);
}
}
FOREACH_OCTREE_CHILD_NODE(ChildRef)
{
if (Node.HasChild(ChildRef))
{
It.PushChild(ChildRef);
}
}
}
CurrentData->PathCollidingGeomIndices = PathCollidingGeomIndices;
for (const auto& Vertex : PathCollidingGeomVerts)
{
CurrentData->PathCollidingGeomVerts.Add(FDynamicMeshVertex(Vertex));
}
}
if (CurrentData->NavMeshGeometry.BuiltMeshIndices.Num() > 0)
{
FNavMeshSceneProxyData::FDebugMeshData DebugMeshData;
for (int32 VertIdx=0; VertIdx < MeshVerts.Num(); ++VertIdx)
{
AddVertexHelper(DebugMeshData, MeshVerts[VertIdx] + CurrentData->NavMeshDrawOffset, NavMeshRenderColor_RecastTileBeingRebuilt);
}
DebugMeshData.Indices.Append(CurrentData->NavMeshGeometry.BuiltMeshIndices);
DebugMeshData.ClusterColor = NavMeshRenderColor_RecastTileBeingRebuilt;
CurrentData->MeshBuilders.Add(DebugMeshData);
// updates should be requested by FRecastNavMeshGenerator::TickAsyncBuild after tiles were refreshed
}
if (NavMesh->bDrawClusters)
{
for (int i = 0; i < CurrentData->NavMeshGeometry.ClusterLinks.Num(); i++)
{
const FRecastDebugGeometry::FClusterLink& CLink = CurrentData->NavMeshGeometry.ClusterLinks[i];
const FVector V0 = CLink.FromCluster + CurrentData->NavMeshDrawOffset;
const FVector V1 = CLink.ToCluster + CurrentData->NavMeshDrawOffset + FVector(0,0,20.0f);
CacheArc(CurrentData->ClusterLinkLines, V0, V1, 0.4f, 4, FColor::Black, ClusterLinkLines_LineThickness);
const FVector VOffset(0, 0, FVector::Dist(V0, V1) * 1.333f);
CacheArrowHead(CurrentData->ClusterLinkLines, V1, V0+VOffset, 30.f, FColor::Black, ClusterLinkLines_LineThickness);
}
}
// cache segment links
if (NavMesh->bDrawNavLinks)
{
for (int32 iArea = 0; iArea < RECAST_MAX_AREAS; iArea++)
{
const TArray<int32>& Indices = CurrentData->NavMeshGeometry.OffMeshSegmentAreas[iArea];
FNavMeshSceneProxyData::FDebugMeshData DebugMeshData;
int32 VertBase = 0;
for (int32 i = 0; i < Indices.Num(); i++)
{
FRecastDebugGeometry::FOffMeshSegment& SegInfo = CurrentData->NavMeshGeometry.OffMeshSegments[Indices[i]];
const FVector A0 = SegInfo.LeftStart + CurrentData->NavMeshDrawOffset;
const FVector A1 = SegInfo.LeftEnd + CurrentData->NavMeshDrawOffset;
const FVector B0 = SegInfo.RightStart + CurrentData->NavMeshDrawOffset;
const FVector B1 = SegInfo.RightEnd + CurrentData->NavMeshDrawOffset;
const FVector Edge0 = B0 - A0;
const FVector Edge1 = B1 - A1;
const float Len0 = Edge0.Size();
const float Len1 = Edge1.Size();
const FColor SegColor = DarkenColor(CurrentData->NavMeshColors[SegInfo.AreaID]);
const FColor ColA = (SegInfo.ValidEnds & FRecastDebugGeometry::OMLE_Left) ? FColor::White : FColor::Black;
const FColor ColB = (SegInfo.ValidEnds & FRecastDebugGeometry::OMLE_Right) ? FColor::White : FColor::Black;
const int32 NumArcPoints = 8;
const float ArcPtsScale = 1.0f / NumArcPoints;
FVector Prev0 = EvalArc(A0, Edge0, Len0*0.25f, 0);
FVector Prev1 = EvalArc(A1, Edge1, Len1*0.25f, 0);
AddVertexHelper(DebugMeshData, Prev0, ColA);
AddVertexHelper(DebugMeshData, Prev1, ColA);
for (int32 j = 1; j <= NumArcPoints; j++)
{
const float u = j * ArcPtsScale;
FVector Pt0 = EvalArc(A0, Edge0, Len0*0.25f, u);
FVector Pt1 = EvalArc(A1, Edge1, Len1*0.25f, u);
AddVertexHelper(DebugMeshData, Pt0, (j == NumArcPoints) ? ColB : FColor::White);
AddVertexHelper(DebugMeshData, Pt1, (j == NumArcPoints) ? ColB : FColor::White);
AddTriangleHelper(DebugMeshData, VertBase+0, VertBase+2, VertBase+1);
AddTriangleHelper(DebugMeshData, VertBase+2, VertBase+3, VertBase+1);
AddTriangleHelper(DebugMeshData, VertBase+0, VertBase+1, VertBase+2);
AddTriangleHelper(DebugMeshData, VertBase+2, VertBase+1, VertBase+3);
VertBase += 2;
Prev0 = Pt0;
Prev1 = Pt1;
}
VertBase += 2;
DebugMeshData.ClusterColor = SegColor;
}
if (DebugMeshData.Indices.Num())
{
CurrentData->MeshBuilders.Add(DebugMeshData);
}
}
}
CurrentData->NavMeshGeometry.PolyEdges.Empty();
CurrentData->NavMeshGeometry.NavMeshEdges.Empty();
}
// disable depth test & writes
RHICmdList.SetDepthStencilState(TStaticDepthStencilState<false,CF_Always>::GetRHI());
const FIntRect RTViewRect = FIntRect(0, 0, RenderTarget->GetRenderTargetTexture()->GetSizeX(), RenderTarget->GetRenderTargetTexture()->GetSizeY());
// set viewport to RT size
RHICmdList.SetViewport(RTViewRect.Min.X, RTViewRect.Min.Y, 0.0f, RTViewRect.Max.X, RTViewRect.Max.Y, 1.0f);
});
ENQUEUE_UNIQUE_RENDER_COMMAND_TWOPARAMETER(
RenderLandscapeMaterialForLightmass,
const FSceneView&, View, View,
const FMeshBatch&, Mesh, MeshElement,
{
//SCOPED_DRAW_EVENT(RHICmdList, RenderLandscapeMaterialToTexture);
GetRendererModule().DrawTileMesh(RHICmdList, View, Mesh, false, FHitProxyId());
});
FlushRenderingCommands();
}
void GetLandscapeOpacityData(const FLandscapeStaticLightingMesh* LandscapeMesh, int32& InOutSizeX, int32& InOutSizeY, TArray<FFloat16Color>& OutMaterialSamples)
{
const ULandscapeComponent* LandscapeComponent = CastChecked<ULandscapeComponent>(LandscapeMesh->Component);
const int32 SubsectionSizeQuads = LandscapeComponent->SubsectionSizeQuads;
const int32 NumSubsections = LandscapeComponent->NumSubsections;
const int32 ComponentSizeQuads = LandscapeComponent->ComponentSizeQuads;
int32 PatchExpandCountX = 0;
int32 PatchExpandCountY = 0;
int32 DesiredSize = 1;
