bool FBeginModifyLandscapeCommand::Update()
{
//Find the landscape
FEdModeLandscape* LandscapeEdMode = (FEdModeLandscape*)GLevelEditorModeTools().GetActiveMode(FBuiltinEditorModes::EM_Landscape);
//Find a location on the edge of the landscape along the x axis so the default camera can see it in the distance.
FVector LandscapeSizePerComponent = LandscapeEdMode->UISettings->NewLandscape_QuadsPerSection * LandscapeEdMode->UISettings->NewLandscape_SectionsPerComponent * LandscapeEdMode->UISettings->NewLandscape_Scale;
FVector TargetLoctaion(0);
TargetLoctaion.X = -LandscapeSizePerComponent.X * (LandscapeEdMode->UISettings->NewLandscape_ComponentCount.X / 2.f);
ALandscapeProxy* Proxy = LandscapeEdMode->CurrentToolTarget.LandscapeInfo.Get()->GetCurrentLevelLandscapeProxy(true);
if (Proxy)
{
TargetLoctaion = Proxy->LandscapeActorToWorld().InverseTransformPosition(TargetLoctaion);
}
//Begin using the sculpting tool
FLevelEditorViewportClient* SelectedViewport = LandscapeTestUtils::FindSelectedViewport();
LandscapeEdMode->CurrentTool->BeginTool(SelectedViewport, LandscapeEdMode->CurrentToolTarget, TargetLoctaion);
SelectedViewport->Invalidate();
UE_LOG(LogLandscapeAutomationTests, Display, TEXT("Modified the landscape using the sculpt tool"));
return true;
}
virtual void EnterTool()
{
FLandscapeToolPaintBase<ToolTarget, FLandscapeToolStrokeFlatten<ToolTarget>>::EnterTool();
ALandscapeProxy* LandscapeProxy = this->EdMode->CurrentToolTarget.LandscapeInfo->GetLandscapeProxy();
MeshComponent = ConstructObject<UStaticMeshComponent>(UStaticMeshComponent::StaticClass(), LandscapeProxy, NAME_None, RF_Transient);
MeshComponent->StaticMesh = PlaneMesh;
MeshComponent->AttachTo(LandscapeProxy->GetRootComponent());
MeshComponent->RegisterComponent();
}
FText FLandscapeEditorDetails::GetTargetLandscapeName()
{
FEdModeLandscape* LandscapeEdMode = GetEditorMode();
if (LandscapeEdMode)
{
ULandscapeInfo* Info = LandscapeEdMode->CurrentToolTarget.LandscapeInfo.Get();
if (Info)
{
ALandscapeProxy* Proxy = Info->GetLandscapeProxy();
if (Proxy)
{
return FText::FromString(Proxy->GetActorLabel());
}
}
}
return FText();
}
/**
* Attempts to apply the material to the specified actor.
*
* @param TargetActor the actor to apply the material to
* @param MaterialToApply the material to apply to the actor
* @param OptionalMaterialSlot the material slot to apply to.
*
* @return true if the material was successfully applied to the actor
*/
bool FActorFactoryAssetProxy::ApplyMaterialToActor( AActor* TargetActor, UMaterialInterface* MaterialToApply, int32 OptionalMaterialSlot )
{
bool bResult = false;
if ( TargetActor != NULL && MaterialToApply != NULL )
{
ALandscapeProxy* Landscape = Cast<ALandscapeProxy>(TargetActor);
if (Landscape != NULL)
{
UProperty* MaterialProperty = FindField<UProperty>(ALandscapeProxy::StaticClass(), "LandscapeMaterial");
Landscape->PreEditChange(MaterialProperty);
Landscape->LandscapeMaterial = MaterialToApply;
FPropertyChangedEvent PropertyChangedEvent(MaterialProperty);
Landscape->PostEditChangeProperty(PropertyChangedEvent);
bResult = true;
}
else
{
TArray<UActorComponent*> EditableComponents;
FActorEditorUtils::GetEditableComponents( TargetActor, EditableComponents );
// Some actors could potentially have multiple mesh components, so we need to store all of the potentially valid ones
// (or else perform special cases with IsA checks on the target actor)
TArray<USceneComponent*> FoundMeshComponents;
// Find which mesh the user clicked on first.
TInlineComponentArray<USceneComponent*> SceneComponents;
TargetActor->GetComponents(SceneComponents);
for ( int32 ComponentIdx=0; ComponentIdx < SceneComponents.Num(); ComponentIdx++ )
{
USceneComponent* SceneComp = SceneComponents[ComponentIdx];
// Only apply the material to editable components. Components which are not exposed are not intended to be changed.
if( EditableComponents.Contains( SceneComp ) )
{
UMeshComponent* MeshComponent = Cast<UMeshComponent>(SceneComp);
if((MeshComponent && MeshComponent->IsRegistered()) ||
SceneComp->IsA<UDecalComponent>())
{
// Intentionally do not break the loop here, as there could be potentially multiple mesh components
FoundMeshComponents.AddUnique( SceneComp );
}
}
}
if ( FoundMeshComponents.Num() > 0 )
{
// Check each component that was found
for ( TArray<USceneComponent*>::TConstIterator MeshCompIter( FoundMeshComponents ); MeshCompIter; ++MeshCompIter )
{
USceneComponent* SceneComp = *MeshCompIter;
bResult = FComponentEditorUtils::AttemptApplyMaterialToComponent(SceneComp, MaterialToApply, OptionalMaterialSlot);
}
}
}
}
return bResult;
}
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);
}
}
}
}