void RasterizeSegmentPoints(ULandscapeInfo* LandscapeInfo, TArray<FLandscapeSplineInterpPoint> Points, const FTransform& SplineToWorld, bool bRaiseTerrain, bool bLowerTerrain, ULandscapeLayerInfoObject* LayerInfo)
{
ALandscapeProxy* LandscapeProxy = LandscapeInfo->GetLandscapeProxy();
const FTransform SplineToLandscape = SplineToWorld.GetRelativeTransform(LandscapeProxy->LandscapeActorToWorld());
FLandscapeEditDataInterface LandscapeEdit(LandscapeInfo);
TSet<ULandscapeComponent*> ModifiedComponents;
// I'd dearly love to use FIntRect in this code, but Landscape works with "Inclusive Max" and FIntRect is "Exclusive Max"
int32 LandscapeMinX, LandscapeMinY, LandscapeMaxX, LandscapeMaxY;
if (!LandscapeInfo->GetLandscapeExtent(LandscapeMinX, LandscapeMinY, LandscapeMaxX, LandscapeMaxY))
{
return;
}
FBox SegmentBounds = FBox(0);
for (const FLandscapeSplineInterpPoint& Point : Points)
{
SegmentBounds += Point.FalloffLeft;
SegmentBounds += Point.FalloffRight;
}
SegmentBounds = SegmentBounds.TransformBy(SplineToLandscape.ToMatrixWithScale());
int32 MinX = FMath::CeilToInt(SegmentBounds.Min.X);
int32 MinY = FMath::CeilToInt(SegmentBounds.Min.Y);
int32 MaxX = FMath::FloorToInt(SegmentBounds.Max.X);
int32 MaxY = FMath::FloorToInt(SegmentBounds.Max.Y);
MinX = FMath::Max(MinX, LandscapeMinX);
MinY = FMath::Max(MinY, LandscapeMinY);
MaxX = FMath::Min(MaxX, LandscapeMaxX);
MaxY = FMath::Min(MaxY, LandscapeMaxY);
if (MinX > MaxX || MinY > MaxY)
{
// The segment's bounds don't intersect the landscape, so skip it entirely
return;
}
for (int32 j = 0; j < Points.Num(); j++)
{
Points[j].Center = SplineToLandscape.TransformPosition(Points[j].Center);
Points[j].Left = SplineToLandscape.TransformPosition(Points[j].Left);
Points[j].Right = SplineToLandscape.TransformPosition(Points[j].Right);
Points[j].FalloffLeft = SplineToLandscape.TransformPosition(Points[j].FalloffLeft);
Points[j].FalloffRight = SplineToLandscape.TransformPosition(Points[j].FalloffRight);
// local-heights to texture value heights
Points[j].Left.Z = Points[j].Left.Z * LANDSCAPE_INV_ZSCALE + LandscapeDataAccess::MidValue;
Points[j].Right.Z = Points[j].Right.Z * LANDSCAPE_INV_ZSCALE + LandscapeDataAccess::MidValue;
Points[j].FalloffLeft.Z = Points[j].FalloffLeft.Z * LANDSCAPE_INV_ZSCALE + LandscapeDataAccess::MidValue;
Points[j].FalloffRight.Z = Points[j].FalloffRight.Z * LANDSCAPE_INV_ZSCALE + LandscapeDataAccess::MidValue;
}
// Heights raster
if (bRaiseTerrain || bLowerTerrain)
{
RasterizeSegmentHeight(MinX, MinY, MaxX, MaxY, LandscapeEdit, Points, bRaiseTerrain, bLowerTerrain, ModifiedComponents);
if (MinX > MaxX || MinY > MaxY)
{
// The segment's bounds don't intersect any data, so we skip it entirely
// it wouldn't intersect any weightmap data either so we don't even bother trying
}
}
// Blend layer raster
if (LayerInfo != NULL)
{
RasterizeSegmentAlpha(MinX, MinY, MaxX, MaxY, LandscapeEdit, Points, LayerInfo, ModifiedComponents);
}
LandscapeEdit.Flush();
for (ULandscapeComponent* Component : ModifiedComponents)
{
// Recreate collision for modified components and update the navmesh
ULandscapeHeightfieldCollisionComponent* CollisionComponent = Component->CollisionComponent.Get();
if (CollisionComponent)
{
CollisionComponent->RecreateCollision();
UNavigationSystem* NavSys = UNavigationSystem::GetCurrent(Component);
if (NavSys)
{
NavSys->UpdateNavOctree(CollisionComponent);
}
}
}
}
bool ULandscapeInfo::ApplySplinesInternal(bool bOnlySelected, ALandscapeProxy* Landscape)
{
if (!Landscape || !Landscape->SplineComponent || Landscape->SplineComponent->ControlPoints.Num() == 0 || Landscape->SplineComponent->Segments.Num() == 0)
{
return false;
}
FScopedTransaction Transaction(LOCTEXT("LandscapeSpline_ApplySplines", "Apply Splines to Landscape"));
const FTransform SplineToLandscape = Landscape->SplineComponent->ComponentToWorld.GetRelativeTransform(Landscape->LandscapeActorToWorld());
FLandscapeEditDataInterface LandscapeEdit(this);
TSet<ULandscapeComponent*> ModifiedComponents;
// I'd dearly love to use FIntRect in this code, but Landscape works with "Inclusive Max" and FIntRect is "Exclusive Max"
int32 LandscapeMinX, LandscapeMinY, LandscapeMaxX, LandscapeMaxY;
if (!GetLandscapeExtent(LandscapeMinX, LandscapeMinY, LandscapeMaxX, LandscapeMaxY))
{
return false;
}
for (const ULandscapeSplineControlPoint* ControlPoint : Landscape->SplineComponent->ControlPoints)
{
if (bOnlySelected && !ControlPoint->IsSplineSelected())
{
continue;
}
if (ControlPoint->GetPoints().Num() < 2)
{
continue;
}
FBox ControlPointBounds = ControlPoint->GetBounds();
ControlPointBounds = ControlPointBounds.TransformBy(SplineToLandscape.ToMatrixWithScale());
int32 MinX = FMath::CeilToInt(ControlPointBounds.Min.X);
int32 MinY = FMath::CeilToInt(ControlPointBounds.Min.Y);
int32 MaxX = FMath::FloorToInt(ControlPointBounds.Max.X);
int32 MaxY = FMath::FloorToInt(ControlPointBounds.Max.Y);
MinX = FMath::Max(MinX, LandscapeMinX);
MinY = FMath::Max(MinY, LandscapeMinY);
MaxX = FMath::Min(MaxX, LandscapeMaxX);
MaxY = FMath::Min(MaxY, LandscapeMaxY);
if (MinX > MaxX || MinY > MaxY)
{
// The control point's bounds don't intersect the landscape, so skip it entirely
continue;
}
TArray<FLandscapeSplineInterpPoint> Points = ControlPoint->GetPoints();
for (int32 j = 0; j < Points.Num(); j++)
{
Points[j].Center = SplineToLandscape.TransformPosition(Points[j].Center);
Points[j].Left = SplineToLandscape.TransformPosition(Points[j].Left);
Points[j].Right = SplineToLandscape.TransformPosition(Points[j].Right);
Points[j].FalloffLeft = SplineToLandscape.TransformPosition(Points[j].FalloffLeft);
Points[j].FalloffRight = SplineToLandscape.TransformPosition(Points[j].FalloffRight);
// local-heights to texture value heights
Points[j].Left.Z = Points[j].Left.Z * LANDSCAPE_INV_ZSCALE + LandscapeDataAccess::MidValue;
Points[j].Right.Z = Points[j].Right.Z * LANDSCAPE_INV_ZSCALE + LandscapeDataAccess::MidValue;
Points[j].FalloffLeft.Z = Points[j].FalloffLeft.Z * LANDSCAPE_INV_ZSCALE + LandscapeDataAccess::MidValue;
Points[j].FalloffRight.Z = Points[j].FalloffRight.Z * LANDSCAPE_INV_ZSCALE + LandscapeDataAccess::MidValue;
}
// Heights raster
if (ControlPoint->bRaiseTerrain || ControlPoint->bLowerTerrain)
{
const FVector Center3D = SplineToLandscape.TransformPosition(ControlPoint->Location);
RasterizeControlPointHeights(MinX, MinY, MaxX, MaxY, LandscapeEdit, Center3D, Points, ControlPoint->bRaiseTerrain, ControlPoint->bLowerTerrain, ModifiedComponents);
}
// Blend layer raster
ULandscapeLayerInfoObject* LayerInfo = GetLayerInfoByName(ControlPoint->LayerName);
if (ControlPoint->LayerName != NAME_None && LayerInfo != NULL)
{
const FVector Center3D = SplineToLandscape.TransformPosition(ControlPoint->Location);
RasterizeControlPointAlpha(MinX, MinY, MaxX, MaxY, LandscapeEdit, Center3D, Points, LayerInfo, ModifiedComponents);
}
}
for (const ULandscapeSplineSegment* Segment : Landscape->SplineComponent->Segments)
{
if (bOnlySelected && !Segment->IsSplineSelected())
{
continue;
}
FBox SegmentBounds = Segment->GetBounds();
SegmentBounds = SegmentBounds.TransformBy(SplineToLandscape.ToMatrixWithScale());
int32 MinX = FMath::CeilToInt(SegmentBounds.Min.X);
int32 MinY = FMath::CeilToInt(SegmentBounds.Min.Y);
int32 MaxX = FMath::FloorToInt(SegmentBounds.Max.X);
int32 MaxY = FMath::FloorToInt(SegmentBounds.Max.Y);
MinX = FMath::Max(MinX, LandscapeMinX);
MinY = FMath::Max(MinY, LandscapeMinY);
MaxX = FMath::Min(MaxX, LandscapeMaxX);
MaxY = FMath::Min(MaxY, LandscapeMaxY);
if (MinX > MaxX || MinY > MaxY)
{
// The segment's bounds don't intersect the landscape, so skip it entirely
continue;
}
TArray<FLandscapeSplineInterpPoint> Points = Segment->GetPoints();
for (int32 j = 0; j < Points.Num(); j++)
{
Points[j].Center = SplineToLandscape.TransformPosition(Points[j].Center);
Points[j].Left = SplineToLandscape.TransformPosition(Points[j].Left);
Points[j].Right = SplineToLandscape.TransformPosition(Points[j].Right);
Points[j].FalloffLeft = SplineToLandscape.TransformPosition(Points[j].FalloffLeft);
Points[j].FalloffRight = SplineToLandscape.TransformPosition(Points[j].FalloffRight);
// local-heights to texture value heights
Points[j].Left.Z = Points[j].Left.Z * LANDSCAPE_INV_ZSCALE + LandscapeDataAccess::MidValue;
Points[j].Right.Z = Points[j].Right.Z * LANDSCAPE_INV_ZSCALE + LandscapeDataAccess::MidValue;
Points[j].FalloffLeft.Z = Points[j].FalloffLeft.Z * LANDSCAPE_INV_ZSCALE + LandscapeDataAccess::MidValue;
Points[j].FalloffRight.Z = Points[j].FalloffRight.Z * LANDSCAPE_INV_ZSCALE + LandscapeDataAccess::MidValue;
}
// Heights raster
if (Segment->bRaiseTerrain || Segment->bLowerTerrain)
{
RasterizeSegmentHeight(MinX, MinY, MaxX, MaxY, LandscapeEdit, Points, Segment->bRaiseTerrain, Segment->bLowerTerrain, ModifiedComponents);
if (MinX > MaxX || MinY > MaxY)
{
// The segment's bounds don't intersect any data, so we skip it entirely
// it wouldn't intersect any weightmap data either so we don't even bother trying
}
}
// Blend layer raster
ULandscapeLayerInfoObject* LayerInfo = GetLayerInfoByName(Segment->LayerName);
if (Segment->LayerName != NAME_None && LayerInfo != NULL)
{
RasterizeSegmentAlpha(MinX, MinY, MaxX, MaxY, LandscapeEdit, Points, LayerInfo, ModifiedComponents);
}
}
LandscapeEdit.Flush();
for (ULandscapeComponent* Component : ModifiedComponents)
{
// Recreate collision for modified components and update the navmesh
ULandscapeHeightfieldCollisionComponent* CollisionComponent = Component->CollisionComponent.Get();
if (CollisionComponent)
{
CollisionComponent->RecreateCollision();
UNavigationSystem* NavSys = UNavigationSystem::GetCurrent(Component);
if (NavSys)
{
NavSys->UpdateNavOctree(CollisionComponent);
}
}
}
return true;
}