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8f5e6ffb66
Applied to: * New Landscapes, new imported landscape * Import Landscape tool * Add component tool #jira UE-149015 #preflight 627e98d97c26e247735ca7d1 #rb Michael.Balzer, Jonathan.Bard #ROBOMERGE-AUTHOR: luc.eygasier #ROBOMERGE-SOURCE: CL 20187875 via CL 20189504 via CL 20189506 via CL 20189507 #ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v943-19904690) [CL 20191648 by luc eygasier in ue5-main branch]
1439 lines
52 KiB
C++
1439 lines
52 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "CoreMinimal.h"
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#include "InputCoreTypes.h"
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#include "Materials/Material.h"
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#include "Materials/MaterialInstanceDynamic.h"
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#include "Materials/MaterialInstanceConstant.h"
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#include "EngineUtils.h"
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#include "EditorViewportClient.h"
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#include "LandscapeToolInterface.h"
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#include "LandscapeProxy.h"
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#include "LandscapeGizmoActor.h"
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#include "LandscapeEdMode.h"
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#include "LandscapeEditorObject.h"
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#include "LandscapeRender.h"
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#include "LevelUtils.h"
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//
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// FLandscapeBrush
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//
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bool GInLandscapeBrushTransaction = false;
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void FLandscapeBrush::BeginStroke(float LandscapeX, float LandscapeY, FLandscapeTool* CurrentTool)
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{
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if (!GInLandscapeBrushTransaction)
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{
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GEditor->BeginTransaction(FText::Format(NSLOCTEXT("UnrealEd", "LandscapeMode_EditTransaction", "Landscape Editing: {0}"), CurrentTool->GetDisplayName()));
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GInLandscapeBrushTransaction = true;
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}
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}
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void FLandscapeBrush::EndStroke()
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{
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if (ensure(GInLandscapeBrushTransaction))
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{
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GEditor->EndTransaction();
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GInLandscapeBrushTransaction = false;
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}
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}
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//
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// FLandscapeBrushCircle
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//
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class FLandscapeBrushCircle : public FLandscapeBrush
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{
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TSet<ULandscapeComponent*> BrushMaterialComponents;
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TArray<UMaterialInstanceDynamic*> BrushMaterialFreeInstances;
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protected:
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FVector2f LastMousePosition;
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UMaterialInterface* BrushMaterial;
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TMap<ULandscapeComponent*, UMaterialInstanceDynamic*> BrushMaterialInstanceMap;
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bool bCanPaint;
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virtual float CalculateFalloff(float Distance, float Radius, float Falloff) = 0;
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/** Protected so that only subclasses can create instances of this class. */
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FLandscapeBrushCircle(FEdModeLandscape* InEdMode, UMaterialInterface* InBrushMaterial)
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: LastMousePosition(0, 0)
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, BrushMaterial(LandscapeTool::CreateMaterialInstance(InBrushMaterial))
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, bCanPaint(false)
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, EdMode(InEdMode)
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{
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}
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public:
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FEdModeLandscape* EdMode;
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// FGCObject interface
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virtual void AddReferencedObjects(FReferenceCollector& Collector) override
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{
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Collector.AddReferencedObject(BrushMaterial);
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// Allow any currently unused material instances to be GC'd
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BrushMaterialFreeInstances.Empty();
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Collector.AddReferencedObjects(BrushMaterialComponents);
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Collector.AddReferencedObjects(BrushMaterialInstanceMap);
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// If a user tool removes any components then we will have bad (null) entries in our TSet/TMap, remove them
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// We can't just call .Remove(nullptr) because the entries were hashed as non-null values so a hash lookup of nullptr won't find them
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for (auto It = BrushMaterialComponents.CreateIterator(); It; ++It)
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{
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if (*It == nullptr)
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{
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It.RemoveCurrent();
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}
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}
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for (auto It = BrushMaterialInstanceMap.CreateIterator(); It; ++It)
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{
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if (It->Key == nullptr || It->Value == nullptr)
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{
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It.RemoveCurrent();
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}
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}
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}
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virtual void LeaveBrush() override
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{
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for (ULandscapeComponent* Component : BrushMaterialComponents)
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{
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if (Component)
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{
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Component->EditToolRenderData.ToolMaterial = nullptr;
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Component->UpdateEditToolRenderData();
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}
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}
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TArray<UMaterialInstanceDynamic*> BrushMaterialInstances;
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BrushMaterialInstanceMap.GenerateValueArray(BrushMaterialInstances);
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BrushMaterialFreeInstances += BrushMaterialInstances;
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BrushMaterialInstanceMap.Empty();
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BrushMaterialComponents.Empty();
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bCanPaint = false;
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}
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virtual void BeginStroke(float LandscapeX, float LandscapeY, FLandscapeTool* CurrentTool) override
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{
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FLandscapeBrush::BeginStroke(LandscapeX, LandscapeY, CurrentTool);
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LastMousePosition = FVector2f(LandscapeX, LandscapeY);
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}
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virtual void Tick(FEditorViewportClient* ViewportClient, float DeltaTime) override
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{
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ULandscapeInfo* LandscapeInfo = EdMode->CurrentToolTarget.LandscapeInfo.Get();
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ALandscapeProxy* Proxy = LandscapeInfo->GetLandscapeProxy();
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const float ScaleXY = FMath::Abs(LandscapeInfo->DrawScale.X);
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const float TotalRadius = EdMode->UISettings->BrushRadius / ScaleXY;
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const float Radius = (1.0f - EdMode->UISettings->BrushFalloff) * TotalRadius;
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const float Falloff = EdMode->UISettings->BrushFalloff * TotalRadius;
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FIntRect Bounds;
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Bounds.Min.X = FMath::FloorToInt(LastMousePosition.X - TotalRadius);
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Bounds.Min.Y = FMath::FloorToInt(LastMousePosition.Y - TotalRadius);
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Bounds.Max.X = FMath::CeilToInt( LastMousePosition.X + TotalRadius);
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Bounds.Max.Y = FMath::CeilToInt( LastMousePosition.Y + TotalRadius);
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TSet<ULandscapeComponent*> NewComponents;
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bool bHasUnloadedComponents = false;
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// Adjusting the brush may use the same keybind as moving the camera as they can be user-set, so we need this second check.
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if (!ViewportClient->IsMovingCamera() || EdMode->IsAdjustingBrush(ViewportClient->Viewport))
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{
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// GetComponentsInRegion expects an inclusive max
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LandscapeInfo->GetComponentsInRegion(Bounds.Min.X, Bounds.Min.Y, Bounds.Max.X - 1, Bounds.Max.Y - 1, NewComponents);
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bHasUnloadedComponents = LandscapeInfo->HasUnloadedComponentsInRegion(Bounds.Min.X, Bounds.Min.Y, Bounds.Max.X - 1, Bounds.Max.Y - 1);
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}
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// Remove the material from any old components that are no longer in the region
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TSet<ULandscapeComponent*> RemovedComponents = BrushMaterialComponents.Difference(NewComponents);
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for (ULandscapeComponent* RemovedComponent : RemovedComponents)
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{
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BrushMaterialFreeInstances.Push(BrushMaterialInstanceMap.FindAndRemoveChecked(RemovedComponent));
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RemovedComponent->EditToolRenderData.ToolMaterial = nullptr;
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RemovedComponent->UpdateEditToolRenderData();
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}
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// Set brush material for components in new region
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TSet<ULandscapeComponent*> AddedComponents = NewComponents.Difference(BrushMaterialComponents);
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for (ULandscapeComponent* AddedComponent : AddedComponents)
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{
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UMaterialInstanceDynamic* BrushMaterialInstance = nullptr;
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if (BrushMaterialFreeInstances.Num() > 0)
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{
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BrushMaterialInstance = BrushMaterialFreeInstances.Pop();
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}
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else
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{
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BrushMaterialInstance = UMaterialInstanceDynamic::Create(BrushMaterial, nullptr);
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}
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BrushMaterialInstanceMap.Add(AddedComponent, BrushMaterialInstance);
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AddedComponent->EditToolRenderData.ToolMaterial = BrushMaterialInstance;
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AddedComponent->UpdateEditToolRenderData();
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}
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BrushMaterialComponents = MoveTemp(NewComponents);
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// Set params for brush material.
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FVector WorldLocation = Proxy->LandscapeActorToWorld().TransformPosition(FVector(LastMousePosition.X, LastMousePosition.Y, 0));
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for (const auto& BrushMaterialInstancePair : BrushMaterialInstanceMap)
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{
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ULandscapeComponent* const Component = BrushMaterialInstancePair.Key;
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UMaterialInstanceDynamic* const MaterialInstance = BrushMaterialInstancePair.Value;
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// Painting can cause the EditToolRenderData to be destructed, so update it if necessary
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if (!AddedComponents.Contains(Component))
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{
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if (Component->EditToolRenderData.ToolMaterial == nullptr)
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{
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Component->EditToolRenderData.ToolMaterial = MaterialInstance;
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Component->UpdateEditToolRenderData();
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}
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}
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MaterialInstance->SetScalarParameterValue(FName(TEXT("LocalRadius")), Radius);
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MaterialInstance->SetScalarParameterValue(FName(TEXT("LocalFalloff")), Falloff);
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MaterialInstance->SetDoubleVectorParameterValue(FName(TEXT("WorldPosition")), FVector4(WorldLocation.X, WorldLocation.Y, WorldLocation.Z, ScaleXY));
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bCanPaint = !bHasUnloadedComponents;
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if (bCanPaint)
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{
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const ALandscapeProxy* LandscapeProxy = Component->GetLandscapeProxy();
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const ULandscapeLayerInfoObject* LayerInfo = EdMode->CurrentToolTarget.LayerInfo.Get();
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if (!EdMode->CanEditLayer())
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{
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bCanPaint = false;
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}
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else if ((EdMode->CurrentToolTarget.TargetType == ELandscapeToolTargetType::Weightmap || EdMode->CurrentToolTarget.TargetType == ELandscapeToolTargetType::Visibility) &&
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EdMode->UISettings->PaintingRestriction != ELandscapeLayerPaintingRestriction::None)
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{
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if (EdMode->UISettings->PaintingRestriction == ELandscapeLayerPaintingRestriction::UseComponentAllowList &&
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!Component->LayerAllowList.Contains(LayerInfo))
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{
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bCanPaint = false;
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}
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else
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{
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const TArray<FWeightmapLayerAllocationInfo>& ComponentWeightmapLayerAllocations = Component->GetWeightmapLayerAllocations(true);
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bool bExisting = ComponentWeightmapLayerAllocations.ContainsByPredicate([LayerInfo](const FWeightmapLayerAllocationInfo& Allocation) { return Allocation.LayerInfo == LayerInfo; });
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if (!bExisting)
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{
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if (EdMode->UISettings->PaintingRestriction == ELandscapeLayerPaintingRestriction::ExistingOnly ||
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(EdMode->UISettings->PaintingRestriction == ELandscapeLayerPaintingRestriction::UseMaxLayers &&
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LandscapeProxy->MaxPaintedLayersPerComponent > 0 && ComponentWeightmapLayerAllocations.Num() >= LandscapeProxy->MaxPaintedLayersPerComponent))
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{
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bCanPaint = false;
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}
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}
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}
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}
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if (bCanPaint && EdMode->CurrentToolTarget.TargetType == ELandscapeToolTargetType::Visibility && !Component->IsLandscapeHoleMaterialValid())
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{
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bCanPaint = false;
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}
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}
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MaterialInstance->SetScalarParameterValue("CanPaint", bCanPaint ? 1.0f : 0.0f);
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}
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}
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virtual void MouseMove(float LandscapeX, float LandscapeY) override
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{
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LastMousePosition = FVector2f(LandscapeX, LandscapeY);
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}
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virtual FLandscapeBrushData ApplyBrush(const TArray<FLandscapeToolInteractorPosition>& InInteractorPositions) override
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{
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if (!bCanPaint)
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{
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return FLandscapeBrushData();
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}
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ULandscapeInfo* LandscapeInfo = EdMode->CurrentToolTarget.LandscapeInfo.Get();
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const float ScaleXY = FMath::Abs(LandscapeInfo->DrawScale.X);
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const float TotalRadius = EdMode->UISettings->BrushRadius / ScaleXY;
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const float Radius = (1.0f - EdMode->UISettings->BrushFalloff) * TotalRadius;
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const float Falloff = EdMode->UISettings->BrushFalloff * TotalRadius;
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// Cap number of mouse positions to a sensible number
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TArray<FLandscapeToolInteractorPosition> InteractorPositions;
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if (InInteractorPositions.Num() > 10)
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{
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for (int32 i = 0; i < 10; ++i)
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{
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// Scale so we include the first and last of the input positions
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InteractorPositions.Add(InInteractorPositions[(i * (InInteractorPositions.Num() - 1)) / 9]);
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}
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}
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else
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{
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InteractorPositions = InInteractorPositions;
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}
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FIntRect Bounds;
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for (const FLandscapeToolInteractorPosition& InteractorPosition : InteractorPositions)
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{
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FIntRect SpotBounds;
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SpotBounds.Min.X = FMath::FloorToInt(InteractorPosition.Position.X - TotalRadius);
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SpotBounds.Min.Y = FMath::FloorToInt(InteractorPosition.Position.Y - TotalRadius);
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SpotBounds.Max.X = FMath::CeilToInt( InteractorPosition.Position.X + TotalRadius);
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SpotBounds.Max.Y = FMath::CeilToInt( InteractorPosition.Position.Y + TotalRadius);
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if (Bounds.IsEmpty())
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{
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Bounds = SpotBounds;
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}
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else
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{
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Bounds.Min = Bounds.Min.ComponentMin(SpotBounds.Min);
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Bounds.Max = Bounds.Max.ComponentMax(SpotBounds.Max);
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}
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}
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// Clamp to landscape bounds
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int32 MinX, MaxX, MinY, MaxY;
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if (!ensure(LandscapeInfo->GetLandscapeExtent(MinX, MinY, MaxX, MaxY)))
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{
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// Landscape has no components somehow
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return FLandscapeBrushData();
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}
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Bounds.Clip(FIntRect(MinX, MinY, MaxX + 1, MaxY + 1));
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FLandscapeBrushData BrushData(Bounds);
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for (const FLandscapeToolInteractorPosition& InteractorPosition : InteractorPositions)
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{
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FIntRect SpotBounds;
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SpotBounds.Min.X = FMath::Max(FMath::FloorToInt(InteractorPosition.Position.X - TotalRadius), Bounds.Min.X);
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SpotBounds.Min.Y = FMath::Max(FMath::FloorToInt(InteractorPosition.Position.Y - TotalRadius), Bounds.Min.Y);
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SpotBounds.Max.X = FMath::Min(FMath::CeilToInt( InteractorPosition.Position.X + TotalRadius), Bounds.Max.X);
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SpotBounds.Max.Y = FMath::Min(FMath::CeilToInt( InteractorPosition.Position.Y + TotalRadius), Bounds.Max.Y);
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for (int32 Y = SpotBounds.Min.Y; Y < SpotBounds.Max.Y; Y++)
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{
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float* Scanline = BrushData.GetDataPtr(FIntPoint(0, Y));
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for (int32 X = SpotBounds.Min.X; X < SpotBounds.Max.X; X++)
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{
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float PrevAmount = Scanline[X];
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if (PrevAmount < 1.0f)
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{
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// Distance from mouse
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float MouseDist = FMath::Sqrt(FMath::Square(InteractorPosition.Position.X - (float)X) + FMath::Square(InteractorPosition.Position.Y - (float)Y));
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float PaintAmount = CalculateFalloff(MouseDist, Radius, Falloff);
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if (PaintAmount > 0.0f)
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{
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if (EdMode->CurrentTool && EdMode->CurrentTool->GetToolType() != ELandscapeToolType::Mask
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&& EdMode->UISettings->bUseSelectedRegion && LandscapeInfo->SelectedRegion.Num() > 0)
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{
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float MaskValue = LandscapeInfo->SelectedRegion.FindRef(FIntPoint(X, Y));
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if (EdMode->UISettings->bUseNegativeMask)
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{
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MaskValue = 1.0f - MaskValue;
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}
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PaintAmount *= MaskValue;
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}
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if (PaintAmount > PrevAmount)
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{
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// Set the brush value for this vertex
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Scanline[X] = PaintAmount;
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}
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}
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}
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}
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}
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}
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return BrushData;
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}
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};
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//
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// FLandscapeBrushComponent
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//
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class FLandscapeBrushComponent : public FLandscapeBrush
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{
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TSet<ULandscapeComponent*> BrushMaterialComponents;
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virtual const TCHAR* GetBrushName() override { return TEXT("Component"); }
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virtual FText GetDisplayName() override { return NSLOCTEXT("UnrealEd", "LandscapeMode_Brush_Component", "Component"); };
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protected:
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FVector2D LastMousePosition;
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UMaterialInterface* BrushMaterial;
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public:
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FEdModeLandscape* EdMode;
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FLandscapeBrushComponent(FEdModeLandscape* InEdMode)
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: BrushMaterial(nullptr)
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, EdMode(InEdMode)
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{
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UMaterial* BaseBrushMaterial = LoadObject<UMaterial>(nullptr, TEXT("/Engine/EditorLandscapeResources/SelectBrushMaterial.SelectBrushMaterial"));
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BrushMaterial = LandscapeTool::CreateMaterialInstance(BaseBrushMaterial);
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}
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// FGCObject interface
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virtual void AddReferencedObjects(FReferenceCollector& Collector) override
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{
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Collector.AddReferencedObjects(BrushMaterialComponents);
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Collector.AddReferencedObject(BrushMaterial);
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}
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virtual ELandscapeBrushType GetBrushType() override { return ELandscapeBrushType::Component; }
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virtual void LeaveBrush() override
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{
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for (TSet<ULandscapeComponent*>::TIterator It(BrushMaterialComponents); It; ++It)
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{
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if ((*It) != nullptr)
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{
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(*It)->EditToolRenderData.ToolMaterial = nullptr;
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(*It)->UpdateEditToolRenderData();
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}
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}
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BrushMaterialComponents.Empty();
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}
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virtual void BeginStroke(float LandscapeX, float LandscapeY, FLandscapeTool* CurrentTool) override
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{
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FLandscapeBrush::BeginStroke(LandscapeX, LandscapeY, CurrentTool);
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LastMousePosition = FVector2D(LandscapeX, LandscapeY);
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}
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virtual void Tick(FEditorViewportClient* ViewportClient, float DeltaTime) override
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{
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TSet<ULandscapeComponent*> NewComponents;
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// Adjusting the brush may use the same keybind as moving the camera as they can be user-set, so we need this second check.
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if (!ViewportClient->IsMovingCamera() || EdMode->IsAdjustingBrush(ViewportClient->Viewport))
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{
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ULandscapeInfo* LandscapeInfo = EdMode->CurrentToolTarget.LandscapeInfo.Get();
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if (LandscapeInfo && LandscapeInfo->ComponentSizeQuads > 0)
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{
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const int32 BrushSize = FMath::Max(EdMode->UISettings->BrushComponentSize, 0);
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const float BrushOriginX = LastMousePosition.X / LandscapeInfo->ComponentSizeQuads - (BrushSize - 1) / 2.0f;
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const float BrushOriginY = LastMousePosition.Y / LandscapeInfo->ComponentSizeQuads - (BrushSize - 1) / 2.0f;
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const int32 ComponentIndexX = FMath::FloorToInt(BrushOriginX);
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const int32 ComponentIndexY = FMath::FloorToInt(BrushOriginY);
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for (int32 YIndex = 0; YIndex < BrushSize; ++YIndex)
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{
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for (int32 XIndex = 0; XIndex < BrushSize; ++XIndex)
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{
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ULandscapeComponent* Component = LandscapeInfo->XYtoComponentMap.FindRef(FIntPoint((ComponentIndexX + XIndex), (ComponentIndexY + YIndex)));
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if (Component && FLevelUtils::IsLevelVisible(Component->GetLandscapeProxy()->GetLevel()))
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{
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// For MoveToLevel
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if (EdMode->CurrentTool->GetToolName() == FName("MoveToLevel"))
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{
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if (Component->GetLandscapeProxy() && !Component->GetLandscapeProxy()->GetLevel()->IsCurrentLevel())
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{
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NewComponents.Add(Component);
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}
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}
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else
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{
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NewComponents.Add(Component);
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}
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}
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}
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}
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// Set brush material for components in new region
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for (ULandscapeComponent* NewComponent : NewComponents)
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{
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NewComponent->EditToolRenderData.ToolMaterial = BrushMaterial;
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NewComponent->UpdateEditToolRenderData();
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}
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}
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}
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// Remove the material from any old components that are no longer in the region
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TSet<ULandscapeComponent*> RemovedComponents = BrushMaterialComponents.Difference(NewComponents);
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for (ULandscapeComponent* RemovedComponent : RemovedComponents)
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{
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if (RemovedComponent != nullptr)
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{
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RemovedComponent->EditToolRenderData.ToolMaterial = nullptr;
|
|
RemovedComponent->UpdateEditToolRenderData();
|
|
}
|
|
}
|
|
|
|
BrushMaterialComponents = MoveTemp(NewComponents);
|
|
}
|
|
|
|
virtual void MouseMove(float LandscapeX, float LandscapeY) override
|
|
{
|
|
LastMousePosition = FVector2D(LandscapeX, LandscapeY);
|
|
}
|
|
|
|
virtual TOptional<FVector2D> GetLastMousePosition() const override
|
|
{
|
|
return LastMousePosition;
|
|
}
|
|
|
|
virtual FLandscapeBrushData ApplyBrush(const TArray<FLandscapeToolInteractorPosition>& InteractorPositions) override
|
|
{
|
|
// Selection Brush only works for
|
|
ULandscapeInfo* LandscapeInfo = EdMode->CurrentToolTarget.LandscapeInfo.Get();
|
|
|
|
FIntRect Bounds;
|
|
|
|
// The add component tool needs the raw bounds of the brush rather than the bounds of the actually existing components under the brush
|
|
if (EdMode->CurrentTool->GetToolName() == FName("AddComponent"))
|
|
{
|
|
const int32 BrushSize = FMath::Max(EdMode->UISettings->BrushComponentSize, 0);
|
|
|
|
const float BrushOriginX = LastMousePosition.X / LandscapeInfo->ComponentSizeQuads - (BrushSize - 1) / 2.0f;
|
|
const float BrushOriginY = LastMousePosition.Y / LandscapeInfo->ComponentSizeQuads - (BrushSize - 1) / 2.0f;
|
|
const int32 ComponentIndexX = FMath::FloorToInt(BrushOriginX);
|
|
const int32 ComponentIndexY = FMath::FloorToInt(BrushOriginY);
|
|
|
|
Bounds.Min.X = (ComponentIndexX) * LandscapeInfo->ComponentSizeQuads;
|
|
Bounds.Min.Y = (ComponentIndexY) * LandscapeInfo->ComponentSizeQuads;
|
|
Bounds.Max.X = (ComponentIndexX + BrushSize) * LandscapeInfo->ComponentSizeQuads + 1;
|
|
Bounds.Max.Y = (ComponentIndexY + BrushSize) * LandscapeInfo->ComponentSizeQuads + 1;
|
|
}
|
|
else
|
|
{
|
|
if (BrushMaterialComponents.Num() == 0)
|
|
{
|
|
return FLandscapeBrushData();
|
|
}
|
|
|
|
// Get extent for all components
|
|
Bounds.Min.X = INT_MAX;
|
|
Bounds.Min.Y = INT_MAX;
|
|
Bounds.Max.X = INT_MIN;
|
|
Bounds.Max.Y = INT_MIN;
|
|
|
|
for (ULandscapeComponent* Component : BrushMaterialComponents)
|
|
{
|
|
if (ensure(Component))
|
|
{
|
|
Component->GetComponentExtent(Bounds.Min.X, Bounds.Min.Y, Bounds.Max.X, Bounds.Max.Y);
|
|
}
|
|
}
|
|
|
|
// GetComponentExtent returns an inclusive max bound
|
|
Bounds.Max += FIntPoint(1, 1);
|
|
}
|
|
|
|
FLandscapeBrushData BrushData(Bounds);
|
|
|
|
for (int32 Y = Bounds.Min.Y; Y < Bounds.Max.Y; Y++)
|
|
{
|
|
float* Scanline = BrushData.GetDataPtr(FIntPoint(0, Y));
|
|
|
|
for (int32 X = Bounds.Min.X; X < Bounds.Max.X; X++)
|
|
{
|
|
float PaintAmount = 1.0f;
|
|
if (EdMode->CurrentTool && EdMode->CurrentTool->GetToolType() != ELandscapeToolType::Mask
|
|
&& EdMode->UISettings->bUseSelectedRegion && LandscapeInfo->SelectedRegion.Num() > 0)
|
|
{
|
|
float MaskValue = LandscapeInfo->SelectedRegion.FindRef(FIntPoint(X, Y));
|
|
if (EdMode->UISettings->bUseNegativeMask)
|
|
{
|
|
MaskValue = 1.0f - MaskValue;
|
|
}
|
|
PaintAmount *= MaskValue;
|
|
}
|
|
|
|
// Set the brush value for this vertex
|
|
Scanline[X] = PaintAmount;
|
|
}
|
|
}
|
|
|
|
return BrushData;
|
|
}
|
|
};
|
|
|
|
//
|
|
// FLandscapeBrushGizmo
|
|
//
|
|
|
|
class FLandscapeBrushGizmo : public FLandscapeBrush
|
|
{
|
|
TSet<ULandscapeComponent*> BrushMaterialComponents;
|
|
|
|
const TCHAR* GetBrushName() override { return TEXT("Gizmo"); }
|
|
virtual FText GetDisplayName() override { return NSLOCTEXT("UnrealEd", "LandscapeMode_Brush_Gizmo", "Gizmo"); };
|
|
|
|
protected:
|
|
UMaterialInstanceDynamic* BrushMaterial;
|
|
public:
|
|
FEdModeLandscape* EdMode;
|
|
|
|
FLandscapeBrushGizmo(FEdModeLandscape* InEdMode)
|
|
: BrushMaterial(nullptr)
|
|
, EdMode(InEdMode)
|
|
{
|
|
UMaterialInterface* GizmoMaterial = LoadObject<UMaterialInstanceConstant>(nullptr, TEXT("/Engine/EditorLandscapeResources/MaskBrushMaterial_Gizmo.MaskBrushMaterial_Gizmo"));
|
|
BrushMaterial = UMaterialInstanceDynamic::Create(LandscapeTool::CreateMaterialInstance(GizmoMaterial), nullptr);
|
|
}
|
|
|
|
// FGCObject interface
|
|
virtual void AddReferencedObjects(FReferenceCollector& Collector) override
|
|
{
|
|
Collector.AddReferencedObjects(BrushMaterialComponents);
|
|
Collector.AddReferencedObject(BrushMaterial);
|
|
}
|
|
|
|
virtual ELandscapeBrushType GetBrushType() override { return ELandscapeBrushType::Gizmo; }
|
|
|
|
virtual void EnterBrush() override
|
|
{
|
|
// Make sure gizmo actor is selected
|
|
ALandscapeGizmoActiveActor* Gizmo = EdMode->CurrentGizmoActor.Get();
|
|
if (Gizmo)
|
|
{
|
|
GEditor->SelectNone(false, true);
|
|
GEditor->SelectActor(Gizmo, true, false, true);
|
|
}
|
|
}
|
|
|
|
virtual void LeaveBrush() override
|
|
{
|
|
for (TSet<ULandscapeComponent*>::TIterator It(BrushMaterialComponents); It; ++It)
|
|
{
|
|
if ((*It) != nullptr)
|
|
{
|
|
(*It)->EditToolRenderData.ToolMaterial = nullptr;
|
|
(*It)->UpdateEditToolRenderData();
|
|
}
|
|
}
|
|
BrushMaterialComponents.Empty();
|
|
}
|
|
|
|
virtual void Tick(FEditorViewportClient* ViewportClient, float DeltaTime) override
|
|
{
|
|
if (GLandscapeEditRenderMode & ELandscapeEditRenderMode::Gizmo || GLandscapeEditRenderMode & ELandscapeEditRenderMode::Select)
|
|
{
|
|
ALandscapeGizmoActiveActor* Gizmo = EdMode->CurrentGizmoActor.Get();
|
|
|
|
if (Gizmo && Gizmo->TargetLandscapeInfo && (Gizmo->TargetLandscapeInfo == EdMode->CurrentToolTarget.LandscapeInfo.Get()) && Gizmo->GizmoTexture && Gizmo->GetRootComponent())
|
|
{
|
|
ULandscapeInfo* LandscapeInfo = Gizmo->TargetLandscapeInfo;
|
|
if (LandscapeInfo && LandscapeInfo->GetLandscapeProxy())
|
|
{
|
|
float ScaleXY = FMath::Abs(LandscapeInfo->DrawScale.X);
|
|
FMatrix LToW = LandscapeInfo->GetLandscapeProxy()->LandscapeActorToWorld().ToMatrixWithScale();
|
|
FMatrix WToL = LToW.InverseFast();
|
|
|
|
UTexture2D* DataTexture = Gizmo->GizmoTexture;
|
|
FIntRect Bounds(MAX_int32, MAX_int32, MIN_int32, MIN_int32);
|
|
FVector LocalPos[4];
|
|
//FMatrix WorldToLocal = Proxy->LocalToWorld().Inverse();
|
|
for (int32 i = 0; i < 4; ++i)
|
|
{
|
|
//LocalPos[i] = WorldToLocal.TransformPosition(Gizmo->FrustumVerts[i]);
|
|
LocalPos[i] = WToL.TransformPosition(Gizmo->FrustumVerts[i]);
|
|
Bounds.Min.X = FMath::Min(Bounds.Min.X, (int32)LocalPos[i].X);
|
|
Bounds.Min.Y = FMath::Min(Bounds.Min.Y, (int32)LocalPos[i].Y);
|
|
Bounds.Max.X = FMath::Max(Bounds.Max.X, (int32)LocalPos[i].X);
|
|
Bounds.Max.Y = FMath::Max(Bounds.Max.Y, (int32)LocalPos[i].Y);
|
|
}
|
|
|
|
// GetComponentsInRegion expects an inclusive max
|
|
TSet<ULandscapeComponent*> NewComponents;
|
|
LandscapeInfo->GetComponentsInRegion(Bounds.Min.X, Bounds.Min.Y, Bounds.Max.X - 1, Bounds.Max.Y - 1, NewComponents);
|
|
|
|
float SquaredScaleXY = FMath::Square(ScaleXY);
|
|
FLinearColor AlphaScaleBias(
|
|
SquaredScaleXY / FMath::Max<float>(1.f, Gizmo->GetWidth() * DataTexture->GetSizeX()),
|
|
SquaredScaleXY / FMath::Max<float>(1.f, Gizmo->GetHeight() * DataTexture->GetSizeY()),
|
|
Gizmo->TextureScale.X,
|
|
Gizmo->TextureScale.Y
|
|
);
|
|
BrushMaterial->SetVectorParameterValue(FName(TEXT("AlphaScaleBias")), AlphaScaleBias);
|
|
|
|
float Angle = (-EdMode->CurrentGizmoActor->GetActorRotation().Euler().Z) * PI / 180.0f;
|
|
FVector4 LandscapeLocation(EdMode->CurrentGizmoActor->GetActorLocation().X, EdMode->CurrentGizmoActor->GetActorLocation().Y, EdMode->CurrentGizmoActor->GetActorLocation().Z, Angle);
|
|
|
|
BrushMaterial->SetDoubleVectorParameterValue(FName(TEXT("LandscapeLocation")), LandscapeLocation);
|
|
BrushMaterial->SetTextureParameterValue(FName(TEXT("AlphaTexture")), DataTexture);
|
|
|
|
// Set brush material for components in new region
|
|
for (ULandscapeComponent* NewComponent : NewComponents)
|
|
{
|
|
NewComponent->EditToolRenderData.GizmoMaterial = ((Gizmo->DataType != LGT_None) && (GLandscapeEditRenderMode & ELandscapeEditRenderMode::Gizmo) ? BrushMaterial : nullptr);
|
|
NewComponent->UpdateEditToolRenderData();
|
|
}
|
|
|
|
// Remove the material from any old components that are no longer in the region
|
|
TSet<ULandscapeComponent*> RemovedComponents = BrushMaterialComponents.Difference(NewComponents);
|
|
for (ULandscapeComponent* RemovedComponent : RemovedComponents)
|
|
{
|
|
if (RemovedComponent != nullptr)
|
|
{
|
|
RemovedComponent->EditToolRenderData.GizmoMaterial = nullptr;
|
|
RemovedComponent->UpdateEditToolRenderData();
|
|
}
|
|
}
|
|
|
|
BrushMaterialComponents = MoveTemp(NewComponents);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
virtual void MouseMove(float LandscapeX, float LandscapeY) override
|
|
{
|
|
}
|
|
|
|
virtual TOptional<bool> InputKey(FEditorViewportClient* InViewportClient, FViewport* InViewport, FKey InKey, EInputEvent InEvent) override
|
|
{
|
|
|
|
if (InKey == EKeys::LeftMouseButton && InEvent == IE_Pressed)
|
|
{
|
|
int32 HitX = InViewport->GetMouseX();
|
|
int32 HitY = InViewport->GetMouseY();
|
|
HHitProxy* HitProxy = InViewport->GetHitProxy(HitX, HitY);
|
|
|
|
HActor* ActorHitProxy = HitProxyCast<HActor>(HitProxy);
|
|
if (ActorHitProxy && ActorHitProxy->Actor->IsA<ALandscapeGizmoActor>())
|
|
{
|
|
// don't treat clicks on a landscape gizmo as a tool invocation
|
|
return TOptional<bool>(false);
|
|
}
|
|
}
|
|
|
|
// default behaviour
|
|
return TOptional<bool>();
|
|
}
|
|
|
|
virtual FLandscapeBrushData ApplyBrush(const TArray<FLandscapeToolInteractorPosition>& InteractorPositions) override
|
|
{
|
|
// Selection Brush only works for
|
|
ALandscapeGizmoActiveActor* Gizmo = EdMode->CurrentGizmoActor.Get();
|
|
ULandscapeInfo* LandscapeInfo = EdMode->CurrentToolTarget.LandscapeInfo.Get();
|
|
|
|
if (!Gizmo || !Gizmo->GetRootComponent())
|
|
{
|
|
return FLandscapeBrushData();
|
|
}
|
|
|
|
if (BrushMaterialComponents.Num() == 0)
|
|
{
|
|
return FLandscapeBrushData();
|
|
}
|
|
|
|
Gizmo->TargetLandscapeInfo = LandscapeInfo;
|
|
float ScaleXY = FMath::Abs(LandscapeInfo->DrawScale.X);
|
|
|
|
// Get extent for all components
|
|
FIntRect Bounds;
|
|
Bounds.Min.X = INT_MAX;
|
|
Bounds.Min.Y = INT_MAX;
|
|
Bounds.Max.X = INT_MIN;
|
|
Bounds.Max.Y = INT_MIN;
|
|
|
|
for (ULandscapeComponent* Component : BrushMaterialComponents)
|
|
{
|
|
if (ensure(Component))
|
|
{
|
|
Component->GetComponentExtent(Bounds.Min.X, Bounds.Min.Y, Bounds.Max.X, Bounds.Max.Y);
|
|
}
|
|
}
|
|
|
|
FLandscapeBrushData BrushData(Bounds);
|
|
|
|
//FMatrix LandscapeToGizmoLocal = Landscape->LocalToWorld() * Gizmo->WorldToLocal();
|
|
const float LW = Gizmo->GetWidth() / (2 * ScaleXY);
|
|
const float LH = Gizmo->GetHeight() / (2 * ScaleXY);
|
|
|
|
FMatrix WToL = LandscapeInfo->GetLandscapeProxy()->LandscapeActorToWorld().ToMatrixWithScale().InverseFast();
|
|
FVector BaseLocation = WToL.TransformPosition(Gizmo->GetActorLocation());
|
|
FMatrix LandscapeToGizmoLocal =
|
|
(FTranslationMatrix(FVector(-LW + 0.5, -LH + 0.5, 0)) * FRotationTranslationMatrix(FRotator(0, Gizmo->GetActorRotation().Yaw, 0), FVector(BaseLocation.X, BaseLocation.Y, 0))).InverseFast();
|
|
|
|
float W = Gizmo->GetWidth() / ScaleXY; //Gizmo->GetWidth() / (Gizmo->DrawScale * Gizmo->DrawScale3D.X);
|
|
float H = Gizmo->GetHeight() / ScaleXY; //Gizmo->GetHeight() / (Gizmo->DrawScale * Gizmo->DrawScale3D.Y);
|
|
|
|
for (int32 Y = Bounds.Min.Y; Y < Bounds.Max.Y; Y++)
|
|
{
|
|
float* Scanline = BrushData.GetDataPtr(FIntPoint(0, Y));
|
|
|
|
for (int32 X = Bounds.Min.X; X < Bounds.Max.X; X++)
|
|
{
|
|
FVector GizmoLocal = LandscapeToGizmoLocal.TransformPosition(FVector(X, Y, 0));
|
|
if (GizmoLocal.X < W && GizmoLocal.X > 0 && GizmoLocal.Y < H && GizmoLocal.Y > 0)
|
|
{
|
|
float PaintAmount = 1.0f;
|
|
// Transform in 0,0 origin LW radius
|
|
if (EdMode->UISettings->bSmoothGizmoBrush)
|
|
{
|
|
FVector TransformedLocal(FMath::Abs(GizmoLocal.X - LW), FMath::Abs(GizmoLocal.Y - LH) * (W / H), 0);
|
|
float FalloffRadius = LW * EdMode->UISettings->BrushFalloff;
|
|
float SquareRadius = LW - FalloffRadius;
|
|
float Cos = FMath::Abs(TransformedLocal.X) / TransformedLocal.Size2D();
|
|
float Sin = FMath::Abs(TransformedLocal.Y) / TransformedLocal.Size2D();
|
|
float RatioX = FalloffRadius > 0.0f ? 1.0f - FMath::Clamp<float>((FMath::Abs(TransformedLocal.X) - Cos*SquareRadius) / FalloffRadius, 0.0f, 1.0f) : 1.0f;
|
|
float RatioY = FalloffRadius > 0.0f ? 1.0f - FMath::Clamp<float>((FMath::Abs(TransformedLocal.Y) - Sin*SquareRadius) / FalloffRadius, 0.0f, 1.0f) : 1.0f;
|
|
float Ratio = TransformedLocal.Size2D() > SquareRadius ? RatioX * RatioY : 1.0f; //TransformedLocal.X / LW * TransformedLocal.Y / LW;
|
|
PaintAmount = Ratio*Ratio*(3 - 2 * Ratio); //FMath::Lerp(SquareFalloff, RectFalloff*RectFalloff, Ratio);
|
|
}
|
|
|
|
if (PaintAmount)
|
|
{
|
|
if (EdMode->CurrentTool && EdMode->CurrentTool->GetToolType() != ELandscapeToolType::Mask
|
|
&& EdMode->UISettings->bUseSelectedRegion && LandscapeInfo->SelectedRegion.Num() > 0)
|
|
{
|
|
float MaskValue = LandscapeInfo->SelectedRegion.FindRef(FIntPoint(X, Y));
|
|
if (EdMode->UISettings->bUseNegativeMask)
|
|
{
|
|
MaskValue = 1.0f - MaskValue;
|
|
}
|
|
PaintAmount *= MaskValue;
|
|
}
|
|
|
|
// Set the brush value for this vertex
|
|
Scanline[X] = PaintAmount;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return BrushData;
|
|
}
|
|
};
|
|
|
|
//
|
|
// FLandscapeBrushSplines
|
|
//
|
|
class FLandscapeBrushSplines : public FLandscapeBrush
|
|
{
|
|
public:
|
|
const TCHAR* GetBrushName() override { return TEXT("Splines"); }
|
|
virtual FText GetDisplayName() override { return NSLOCTEXT("UnrealEd", "LandscapeMode_Brush_Splines", "Splines"); };
|
|
|
|
FEdModeLandscape* EdMode;
|
|
|
|
FLandscapeBrushSplines(FEdModeLandscape* InEdMode)
|
|
: EdMode(InEdMode)
|
|
{
|
|
}
|
|
|
|
virtual ~FLandscapeBrushSplines()
|
|
{
|
|
}
|
|
|
|
virtual ELandscapeBrushType GetBrushType() override { return ELandscapeBrushType::Splines; }
|
|
|
|
virtual void MouseMove(float LandscapeX, float LandscapeY) override
|
|
{
|
|
}
|
|
|
|
virtual FLandscapeBrushData ApplyBrush(const TArray<FLandscapeToolInteractorPosition>& InteractorPositions) override
|
|
{
|
|
return FLandscapeBrushData();
|
|
}
|
|
};
|
|
|
|
//
|
|
// FLandscapeBrushDummy
|
|
//
|
|
class FLandscapeBrushDummy : public FLandscapeBrush
|
|
{
|
|
public:
|
|
const TCHAR* GetBrushName() override { return TEXT("Circle_Dummy"); }
|
|
virtual FText GetDisplayName() override { return NSLOCTEXT("UnrealEd", "LandscapeMode_Brush_None", "None"); };
|
|
|
|
FEdModeLandscape* EdMode;
|
|
|
|
FLandscapeBrushDummy(FEdModeLandscape* InEdMode)
|
|
: EdMode(InEdMode)
|
|
{
|
|
}
|
|
|
|
virtual ~FLandscapeBrushDummy()
|
|
{
|
|
}
|
|
|
|
virtual ELandscapeBrushType GetBrushType() override { return ELandscapeBrushType::Normal; }
|
|
|
|
virtual void MouseMove(float LandscapeX, float LandscapeY) override
|
|
{
|
|
}
|
|
|
|
virtual FLandscapeBrushData ApplyBrush(const TArray<FLandscapeToolInteractorPosition>& InteractorPositions) override
|
|
{
|
|
return FLandscapeBrushData();
|
|
}
|
|
};
|
|
|
|
class FLandscapeBrushCircle_Linear : public FLandscapeBrushCircle
|
|
{
|
|
protected:
|
|
/** Protected so only subclasses can create instances. */
|
|
FLandscapeBrushCircle_Linear(FEdModeLandscape* InEdMode, UMaterialInterface* InBrushMaterial)
|
|
: FLandscapeBrushCircle(InEdMode, InBrushMaterial)
|
|
{
|
|
}
|
|
|
|
virtual float CalculateFalloff(float Distance, float Radius, float Falloff) override
|
|
{
|
|
return Distance < Radius ? 1.0f :
|
|
Falloff > 0.0f ? FMath::Max<float>(0.0f, 1.0f - (Distance - Radius) / Falloff) :
|
|
0.0f;
|
|
}
|
|
|
|
public:
|
|
static FLandscapeBrushCircle_Linear* Create(FEdModeLandscape* InEdMode)
|
|
{
|
|
UMaterialInstanceConstant* CircleBrushMaterial_Linear = LoadObject<UMaterialInstanceConstant>(nullptr, TEXT("/Engine/EditorLandscapeResources/CircleBrushMaterial_Linear.CircleBrushMaterial_Linear"), nullptr, LOAD_None, nullptr);
|
|
return new FLandscapeBrushCircle_Linear(InEdMode, CircleBrushMaterial_Linear);
|
|
}
|
|
virtual const TCHAR* GetBrushName() override { return TEXT("Circle_Linear"); }
|
|
virtual FText GetDisplayName() override { return NSLOCTEXT("UnrealEd", "LandscapeMode_Brush_Falloff_Linear", "Linear falloff"); };
|
|
|
|
};
|
|
|
|
class FLandscapeBrushCircle_Smooth : public FLandscapeBrushCircle_Linear
|
|
{
|
|
protected:
|
|
FLandscapeBrushCircle_Smooth(FEdModeLandscape* InEdMode, UMaterialInterface* InBrushMaterial)
|
|
: FLandscapeBrushCircle_Linear(InEdMode, InBrushMaterial)
|
|
{
|
|
}
|
|
|
|
virtual float CalculateFalloff(float Distance, float Radius, float Falloff) override
|
|
{
|
|
float y = FLandscapeBrushCircle_Linear::CalculateFalloff(Distance, Radius, Falloff);
|
|
// Smooth-step it
|
|
return y*y*(3 - 2 * y);
|
|
}
|
|
|
|
public:
|
|
static FLandscapeBrushCircle_Smooth* Create(FEdModeLandscape* InEdMode)
|
|
{
|
|
UMaterialInstanceConstant* CircleBrushMaterial_Smooth = LoadObject<UMaterialInstanceConstant>(nullptr, TEXT("/Engine/EditorLandscapeResources/CircleBrushMaterial_Smooth.CircleBrushMaterial_Smooth"), nullptr, LOAD_None, nullptr);
|
|
return new FLandscapeBrushCircle_Smooth(InEdMode, CircleBrushMaterial_Smooth);
|
|
}
|
|
virtual const TCHAR* GetBrushName() override { return TEXT("Circle_Smooth"); }
|
|
virtual FText GetDisplayName() override { return NSLOCTEXT("UnrealEd", "LandscapeMode_Brush_Falloff_Smooth", "Smooth falloff"); };
|
|
|
|
};
|
|
|
|
class FLandscapeBrushCircle_Spherical : public FLandscapeBrushCircle
|
|
{
|
|
protected:
|
|
FLandscapeBrushCircle_Spherical(FEdModeLandscape* InEdMode, UMaterialInterface* InBrushMaterial)
|
|
: FLandscapeBrushCircle(InEdMode, InBrushMaterial)
|
|
{
|
|
}
|
|
|
|
virtual float CalculateFalloff(float Distance, float Radius, float Falloff) override
|
|
{
|
|
if (Distance <= Radius)
|
|
{
|
|
return 1.0f;
|
|
}
|
|
|
|
if (Distance > Radius + Falloff)
|
|
{
|
|
return 0.0f;
|
|
}
|
|
|
|
// Elliptical falloff
|
|
return FMath::Sqrt(1.0f - FMath::Square((Distance - Radius) / Falloff));
|
|
}
|
|
|
|
public:
|
|
static FLandscapeBrushCircle_Spherical* Create(FEdModeLandscape* InEdMode)
|
|
{
|
|
UMaterialInstanceConstant* CircleBrushMaterial_Spherical = LoadObject<UMaterialInstanceConstant>(nullptr, TEXT("/Engine/EditorLandscapeResources/CircleBrushMaterial_Spherical.CircleBrushMaterial_Spherical"), nullptr, LOAD_None, nullptr);
|
|
return new FLandscapeBrushCircle_Spherical(InEdMode, CircleBrushMaterial_Spherical);
|
|
}
|
|
virtual const TCHAR* GetBrushName() override { return TEXT("Circle_Spherical"); }
|
|
virtual FText GetDisplayName() override { return NSLOCTEXT("UnrealEd", "LandscapeMode_Brush_Falloff_Spherical", "Spherical falloff"); };
|
|
};
|
|
|
|
class FLandscapeBrushCircle_Tip : public FLandscapeBrushCircle
|
|
{
|
|
protected:
|
|
FLandscapeBrushCircle_Tip(FEdModeLandscape* InEdMode, UMaterialInterface* InBrushMaterial)
|
|
: FLandscapeBrushCircle(InEdMode, InBrushMaterial)
|
|
{
|
|
}
|
|
|
|
virtual float CalculateFalloff(float Distance, float Radius, float Falloff) override
|
|
{
|
|
if (Distance <= Radius)
|
|
{
|
|
return 1.0f;
|
|
}
|
|
|
|
if (Distance > Radius + Falloff)
|
|
{
|
|
return 0.0f;
|
|
}
|
|
|
|
// inverse elliptical falloff
|
|
return 1.0f - FMath::Sqrt(1.0f - FMath::Square((Falloff + Radius - Distance) / Falloff));
|
|
}
|
|
|
|
public:
|
|
static FLandscapeBrushCircle_Tip* Create(FEdModeLandscape* InEdMode)
|
|
{
|
|
UMaterialInstanceConstant* CircleBrushMaterial_Tip = LoadObject<UMaterialInstanceConstant>(nullptr, TEXT("/Engine/EditorLandscapeResources/CircleBrushMaterial_Tip.CircleBrushMaterial_Tip"), nullptr, LOAD_None, nullptr);
|
|
return new FLandscapeBrushCircle_Tip(InEdMode, CircleBrushMaterial_Tip);
|
|
}
|
|
virtual const TCHAR* GetBrushName() override { return TEXT("Circle_Tip"); }
|
|
virtual FText GetDisplayName() override { return NSLOCTEXT("UnrealEd", "LandscapeMode_Brush_Falloff_Tip", "Tip falloff"); };
|
|
};
|
|
|
|
|
|
// FLandscapeBrushAlphaBase
|
|
class FLandscapeBrushAlphaBase : public FLandscapeBrushCircle_Smooth
|
|
{
|
|
public:
|
|
FLandscapeBrushAlphaBase(FEdModeLandscape* InEdMode, UMaterialInterface* InBrushMaterial)
|
|
: FLandscapeBrushCircle_Smooth(InEdMode, InBrushMaterial)
|
|
{
|
|
}
|
|
|
|
float GetAlphaSample(float SampleX, float SampleY)
|
|
{
|
|
int32 SizeX = EdMode->UISettings->AlphaTextureSizeX;
|
|
int32 SizeY = EdMode->UISettings->AlphaTextureSizeY;
|
|
|
|
// Bilinear interpolate the values from the alpha texture
|
|
int32 SampleX0 = FMath::FloorToInt(SampleX);
|
|
int32 SampleX1 = (SampleX0 + 1) % SizeX;
|
|
int32 SampleY0 = FMath::FloorToInt(SampleY);
|
|
int32 SampleY1 = (SampleY0 + 1) % SizeY;
|
|
|
|
const uint8* AlphaData = EdMode->UISettings->AlphaTextureData.GetData();
|
|
|
|
float Alpha00 = (float)AlphaData[SampleX0 + SampleY0 * SizeX] / 255.0f;
|
|
float Alpha01 = (float)AlphaData[SampleX0 + SampleY1 * SizeX] / 255.0f;
|
|
float Alpha10 = (float)AlphaData[SampleX1 + SampleY0 * SizeX] / 255.0f;
|
|
float Alpha11 = (float)AlphaData[SampleX1 + SampleY1 * SizeX] / 255.0f;
|
|
|
|
return FMath::Lerp(
|
|
FMath::Lerp(Alpha00, Alpha01, FMath::Fractional(SampleX)),
|
|
FMath::Lerp(Alpha10, Alpha11, FMath::Fractional(SampleX)),
|
|
FMath::Fractional(SampleY)
|
|
);
|
|
}
|
|
|
|
};
|
|
|
|
//
|
|
// FLandscapeBrushAlphaPattern
|
|
//
|
|
class FLandscapeBrushAlphaPattern : public FLandscapeBrushAlphaBase
|
|
{
|
|
protected:
|
|
FLandscapeBrushAlphaPattern(FEdModeLandscape* InEdMode, UMaterialInterface* InBrushMaterial)
|
|
: FLandscapeBrushAlphaBase(InEdMode, InBrushMaterial)
|
|
{
|
|
}
|
|
|
|
public:
|
|
static FLandscapeBrushAlphaPattern* Create(FEdModeLandscape* InEdMode)
|
|
{
|
|
UMaterialInstanceConstant* PatternBrushMaterial = LoadObject<UMaterialInstanceConstant>(nullptr, TEXT("/Engine/EditorLandscapeResources/PatternBrushMaterial_Smooth.PatternBrushMaterial_Smooth"), nullptr, LOAD_None, nullptr);
|
|
return new FLandscapeBrushAlphaPattern(InEdMode, PatternBrushMaterial);
|
|
}
|
|
|
|
virtual ELandscapeBrushType GetBrushType() override { return ELandscapeBrushType::Alpha; }
|
|
|
|
virtual FLandscapeBrushData ApplyBrush(const TArray<FLandscapeToolInteractorPosition>& InteractorPositions) override
|
|
{
|
|
if (!bCanPaint)
|
|
{
|
|
return FLandscapeBrushData();
|
|
}
|
|
|
|
ULandscapeInfo* LandscapeInfo = EdMode->CurrentToolTarget.LandscapeInfo.Get();
|
|
const float ScaleXY = FMath::Abs(LandscapeInfo->DrawScale.X);
|
|
const float TotalRadius = EdMode->UISettings->BrushRadius / ScaleXY;
|
|
const float Radius = (1.0f - EdMode->UISettings->BrushFalloff) * TotalRadius;
|
|
const float Falloff = EdMode->UISettings->BrushFalloff * TotalRadius;
|
|
|
|
int32 SizeX = EdMode->UISettings->AlphaTextureSizeX;
|
|
int32 SizeY = EdMode->UISettings->AlphaTextureSizeY;
|
|
|
|
FIntRect Bounds;
|
|
Bounds.Min.X = FMath::FloorToInt(LastMousePosition.X - TotalRadius);
|
|
Bounds.Min.Y = FMath::FloorToInt(LastMousePosition.Y - TotalRadius);
|
|
Bounds.Max.X = FMath::CeilToInt( LastMousePosition.X + TotalRadius);
|
|
Bounds.Max.Y = FMath::CeilToInt( LastMousePosition.Y + TotalRadius);
|
|
|
|
|
|
// Clamp to landscape bounds
|
|
int32 MinX, MaxX, MinY, MaxY;
|
|
if (!ensure(LandscapeInfo->GetLandscapeExtent(MinX, MinY, MaxX, MaxY)))
|
|
{
|
|
// Landscape has no components somehow
|
|
return FLandscapeBrushData();
|
|
}
|
|
Bounds.Clip(FIntRect(MinX, MinY, MaxX + 1, MaxY + 1));
|
|
|
|
FLandscapeBrushData BrushData(Bounds);
|
|
|
|
for (int32 Y = Bounds.Min.Y; Y < Bounds.Max.Y; Y++)
|
|
{
|
|
float* Scanline = BrushData.GetDataPtr(FIntPoint(0, Y));
|
|
|
|
for (int32 X = Bounds.Min.X; X < Bounds.Max.X; X++)
|
|
{
|
|
float Angle;
|
|
FVector2D Scale;
|
|
FVector2D Bias;
|
|
if (EdMode->UISettings->bUseWorldSpacePatternBrush)
|
|
{
|
|
FVector2D LocalOrigin = -FVector2D(LandscapeInfo->GetLandscapeProxy()->LandscapeActorToWorld().InverseTransformPosition(FVector(EdMode->UISettings->WorldSpacePatternBrushSettings.Origin, 0.0f)));
|
|
const FVector2D LocalScale = FVector2D(
|
|
ScaleXY / (EdMode->UISettings->WorldSpacePatternBrushSettings.RepeatSize * ((float)SizeX / SizeY)),
|
|
ScaleXY / (EdMode->UISettings->WorldSpacePatternBrushSettings.RepeatSize));
|
|
LocalOrigin *= LocalScale;
|
|
Angle = -EdMode->UISettings->WorldSpacePatternBrushSettings.Rotation;
|
|
if (EdMode->UISettings->WorldSpacePatternBrushSettings.bCenterTextureOnOrigin)
|
|
{
|
|
LocalOrigin += FVector2D(0.5f, 0.5f).GetRotated(-Angle);
|
|
}
|
|
Scale = FVector2D(SizeX, SizeY) * LocalScale;
|
|
Bias = FVector2D(SizeX, SizeY) * LocalOrigin;
|
|
}
|
|
else
|
|
{
|
|
Scale.X = 1.0f / EdMode->UISettings->AlphaBrushScale;
|
|
Scale.Y = 1.0f / EdMode->UISettings->AlphaBrushScale;
|
|
Bias.X = SizeX * EdMode->UISettings->AlphaBrushPanU;
|
|
Bias.Y = SizeY * EdMode->UISettings->AlphaBrushPanV;
|
|
Angle = EdMode->UISettings->AlphaBrushRotation;
|
|
}
|
|
|
|
// Find alphamap sample location
|
|
FVector2D SamplePos = FVector2D(X, Y) * Scale + Bias;
|
|
SamplePos = SamplePos.GetRotated(Angle);
|
|
|
|
float ModSampleX = FMath::Fmod(SamplePos.X, (float)SizeX);
|
|
float ModSampleY = FMath::Fmod(SamplePos.Y, (float)SizeY);
|
|
|
|
if (ModSampleX < 0.0f)
|
|
{
|
|
ModSampleX += (float)SizeX;
|
|
}
|
|
if (ModSampleY < 0.0f)
|
|
{
|
|
ModSampleY += (float)SizeY;
|
|
}
|
|
|
|
// Sample the alpha texture
|
|
float Alpha = GetAlphaSample(ModSampleX, ModSampleY);
|
|
|
|
// Distance from mouse
|
|
float MouseDist = FMath::Sqrt(FMath::Square(LastMousePosition.X - (float)X) + FMath::Square(LastMousePosition.Y - (float)Y));
|
|
|
|
float PaintAmount = CalculateFalloff(MouseDist, Radius, Falloff) * Alpha;
|
|
|
|
if (PaintAmount > 0.0f)
|
|
{
|
|
if (EdMode->CurrentTool && EdMode->CurrentTool->GetToolType() != ELandscapeToolType::Mask
|
|
&& EdMode->UISettings->bUseSelectedRegion && LandscapeInfo->SelectedRegion.Num() > 0)
|
|
{
|
|
float MaskValue = LandscapeInfo->SelectedRegion.FindRef(FIntPoint(X, Y));
|
|
if (EdMode->UISettings->bUseNegativeMask)
|
|
{
|
|
MaskValue = 1.0f - MaskValue;
|
|
}
|
|
PaintAmount *= MaskValue;
|
|
}
|
|
// Set the brush value for this vertex
|
|
Scanline[X] = PaintAmount;
|
|
}
|
|
}
|
|
}
|
|
return BrushData;
|
|
}
|
|
|
|
virtual void Tick(FEditorViewportClient* ViewportClient, float DeltaTime) override
|
|
{
|
|
FLandscapeBrushCircle::Tick(ViewportClient, DeltaTime);
|
|
|
|
ALandscapeProxy* Proxy = EdMode->CurrentToolTarget.LandscapeInfo.IsValid() ? EdMode->CurrentToolTarget.LandscapeInfo->GetLandscapeProxy() : nullptr;
|
|
if (Proxy)
|
|
{
|
|
const float ScaleXY = FMath::Abs(EdMode->CurrentToolTarget.LandscapeInfo->DrawScale.X);
|
|
int32 SizeX = EdMode->UISettings->AlphaTextureSizeX;
|
|
int32 SizeY = EdMode->UISettings->AlphaTextureSizeY;
|
|
|
|
FLinearColor AlphaScaleBias;
|
|
float Angle;
|
|
if (EdMode->UISettings->bUseWorldSpacePatternBrush)
|
|
{
|
|
FVector2D LocalOrigin = -FVector2D(Proxy->LandscapeActorToWorld().InverseTransformPosition(FVector(EdMode->UISettings->WorldSpacePatternBrushSettings.Origin, 0.0f)));
|
|
const FVector2D Scale = FVector2D(
|
|
ScaleXY / (EdMode->UISettings->WorldSpacePatternBrushSettings.RepeatSize * ((float)SizeX / SizeY)),
|
|
ScaleXY / (EdMode->UISettings->WorldSpacePatternBrushSettings.RepeatSize));
|
|
LocalOrigin *= Scale;
|
|
Angle = -EdMode->UISettings->WorldSpacePatternBrushSettings.Rotation;
|
|
if (EdMode->UISettings->WorldSpacePatternBrushSettings.bCenterTextureOnOrigin)
|
|
{
|
|
LocalOrigin += FVector2D(0.5f, 0.5f).GetRotated(-Angle);
|
|
}
|
|
AlphaScaleBias = FLinearColor(
|
|
Scale.X,
|
|
Scale.Y,
|
|
LocalOrigin.X,
|
|
LocalOrigin.Y);
|
|
}
|
|
else
|
|
{
|
|
AlphaScaleBias = FLinearColor(
|
|
1.0f / (EdMode->UISettings->AlphaBrushScale * SizeX),
|
|
1.0f / (EdMode->UISettings->AlphaBrushScale * SizeY),
|
|
EdMode->UISettings->AlphaBrushPanU,
|
|
EdMode->UISettings->AlphaBrushPanV);
|
|
Angle = EdMode->UISettings->AlphaBrushRotation;
|
|
}
|
|
Angle = FMath::DegreesToRadians(Angle);
|
|
|
|
FVector LandscapeLocation = Proxy->LandscapeActorToWorld().GetTranslation();
|
|
FVector4 LandscapeLocationParam(LandscapeLocation.X, LandscapeLocation.Y, LandscapeLocation.Z, Angle);
|
|
|
|
int32 Channel = EdMode->UISettings->AlphaTextureChannel;
|
|
FLinearColor AlphaTextureMask(Channel == 0 ? 1 : 0, Channel == 1 ? 1 : 0, Channel == 2 ? 1 : 0, Channel == 3 ? 1 : 0);
|
|
|
|
for (const auto& BrushMaterialInstancePair : BrushMaterialInstanceMap)
|
|
{
|
|
UMaterialInstanceDynamic* const MaterialInstance = BrushMaterialInstancePair.Value;
|
|
MaterialInstance->SetVectorParameterValue(FName(TEXT("AlphaScaleBias")), AlphaScaleBias);
|
|
MaterialInstance->SetDoubleVectorParameterValue(FName(TEXT("LandscapeLocation")), LandscapeLocationParam);
|
|
MaterialInstance->SetVectorParameterValue(FName(TEXT("AlphaTextureMask")), AlphaTextureMask);
|
|
MaterialInstance->SetTextureParameterValue(FName(TEXT("AlphaTexture")), EdMode->UISettings->AlphaTexture);
|
|
}
|
|
}
|
|
}
|
|
|
|
virtual const TCHAR* GetBrushName() override { return TEXT("Pattern"); }
|
|
virtual FText GetDisplayName() override { return NSLOCTEXT("UnrealEd", "LandscapeMode_Brush_PatternAlpha", "Pattern Alpha"); };
|
|
};
|
|
|
|
|
|
//
|
|
// FLandscapeBrushAlpha
|
|
//
|
|
class FLandscapeBrushAlpha : public FLandscapeBrushAlphaBase
|
|
{
|
|
float LastMouseAngle;
|
|
FVector2f OldMousePosition; // a previous mouse position, kept until we move a certain distance away, for smoothing deltas
|
|
double LastMouseSampleTime;
|
|
|
|
protected:
|
|
FLandscapeBrushAlpha(FEdModeLandscape* InEdMode, UMaterialInterface* InBrushMaterial)
|
|
: FLandscapeBrushAlphaBase(InEdMode, InBrushMaterial)
|
|
, LastMouseAngle(0.0f)
|
|
, OldMousePosition(0.0f, 0.0f)
|
|
, LastMouseSampleTime(FPlatformTime::Seconds())
|
|
{
|
|
}
|
|
|
|
public:
|
|
static FLandscapeBrushAlpha* Create(FEdModeLandscape* InEdMode)
|
|
{
|
|
UMaterialInstanceConstant* AlphaBrushMaterial = LoadObject<UMaterialInstanceConstant>(nullptr, TEXT("/Engine/EditorLandscapeResources/AlphaBrushMaterial_Smooth.AlphaBrushMaterial_Smooth"), nullptr, LOAD_None, nullptr);
|
|
return new FLandscapeBrushAlpha(InEdMode, AlphaBrushMaterial);
|
|
}
|
|
|
|
virtual FLandscapeBrushData ApplyBrush(const TArray<FLandscapeToolInteractorPosition>& InteractorPositions) override
|
|
{
|
|
if (!bCanPaint)
|
|
{
|
|
return FLandscapeBrushData();
|
|
}
|
|
|
|
ULandscapeInfo* LandscapeInfo = EdMode->CurrentToolTarget.LandscapeInfo.Get();
|
|
if (EdMode->UISettings->bAlphaBrushAutoRotate && OldMousePosition.IsZero())
|
|
{
|
|
OldMousePosition = LastMousePosition;
|
|
LastMouseAngle = 0.0f;
|
|
LastMouseSampleTime = FPlatformTime::Seconds();
|
|
return FLandscapeBrushData();
|
|
}
|
|
else
|
|
{
|
|
float ScaleXY = FMath::Abs(LandscapeInfo->DrawScale.X);
|
|
float Radius = EdMode->UISettings->BrushRadius / ScaleXY;
|
|
int32 SizeX = EdMode->UISettings->AlphaTextureSizeX;
|
|
int32 SizeY = EdMode->UISettings->AlphaTextureSizeY;
|
|
float MaxSize = 2.0f * FMath::Sqrt(FMath::Square(Radius) / 2.0f);
|
|
float AlphaBrushScale = MaxSize / (float)FMath::Max<int32>(SizeX, SizeY);
|
|
const float BrushAngle = EdMode->UISettings->bAlphaBrushAutoRotate ? LastMouseAngle : FMath::DegreesToRadians(EdMode->UISettings->AlphaBrushRotation);
|
|
|
|
FIntRect Bounds;
|
|
Bounds.Min.X = FMath::FloorToInt(LastMousePosition.X - Radius);
|
|
Bounds.Min.Y = FMath::FloorToInt(LastMousePosition.Y - Radius);
|
|
Bounds.Max.X = FMath::CeilToInt( LastMousePosition.X + Radius);
|
|
Bounds.Max.Y = FMath::CeilToInt( LastMousePosition.Y + Radius);
|
|
|
|
|
|
// Clamp to landscape bounds
|
|
int32 MinX, MaxX, MinY, MaxY;
|
|
if (!ensure(LandscapeInfo->GetLandscapeExtent(MinX, MinY, MaxX, MaxY)))
|
|
{
|
|
// Landscape has no components somehow
|
|
return FLandscapeBrushData();
|
|
}
|
|
Bounds.Clip(FIntRect(MinX, MinY, MaxX + 1, MaxY + 1));
|
|
|
|
FLandscapeBrushData BrushData(Bounds);
|
|
|
|
for (int32 Y = Bounds.Min.Y; Y < Bounds.Max.Y; Y++)
|
|
{
|
|
float* Scanline = BrushData.GetDataPtr(FIntPoint(0, Y));
|
|
|
|
for (int32 X = Bounds.Min.X; X < Bounds.Max.X; X++)
|
|
{
|
|
// Find alphamap sample location
|
|
float ScaleSampleX = ((float)X - LastMousePosition.X) / AlphaBrushScale;
|
|
float ScaleSampleY = ((float)Y - LastMousePosition.Y) / AlphaBrushScale;
|
|
|
|
// Rotate around center to match angle
|
|
float SampleX = ScaleSampleX * FMath::Cos(BrushAngle) - ScaleSampleY * FMath::Sin(BrushAngle);
|
|
float SampleY = ScaleSampleY * FMath::Cos(BrushAngle) + ScaleSampleX * FMath::Sin(BrushAngle);
|
|
|
|
SampleX += (float)SizeX * 0.5f;
|
|
SampleY += (float)SizeY * 0.5f;
|
|
|
|
if (SampleX >= 0 && SampleX <= (SizeX - 1) &&
|
|
SampleY >= 0 && SampleY <= (SizeY - 1))
|
|
{
|
|
// Sample the alpha texture
|
|
float Alpha = GetAlphaSample(SampleX, SampleY);
|
|
|
|
if (Alpha > 0.0f)
|
|
{
|
|
// Set the brush value for this vertex
|
|
FIntPoint VertexKey = FIntPoint(X, Y);
|
|
|
|
if (EdMode->CurrentTool && EdMode->CurrentTool->GetToolType() != ELandscapeToolType::Mask
|
|
&& EdMode->UISettings->bUseSelectedRegion && LandscapeInfo->SelectedRegion.Num() > 0)
|
|
{
|
|
float MaskValue = LandscapeInfo->SelectedRegion.FindRef(FIntPoint(X, Y));
|
|
if (EdMode->UISettings->bUseNegativeMask)
|
|
{
|
|
MaskValue = 1.0f - MaskValue;
|
|
}
|
|
Alpha *= MaskValue;
|
|
}
|
|
|
|
Scanline[X] = Alpha;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return BrushData;
|
|
}
|
|
}
|
|
|
|
virtual void MouseMove(float LandscapeX, float LandscapeY) override
|
|
{
|
|
FLandscapeBrushAlphaBase::MouseMove(LandscapeX, LandscapeY);
|
|
|
|
if (EdMode->UISettings->bAlphaBrushAutoRotate)
|
|
{
|
|
// don't do anything with the angle unless we move at least 0.1 units.
|
|
FVector2f MouseDelta = LastMousePosition - OldMousePosition;
|
|
if (MouseDelta.SizeSquared() >= FMath::Square(0.5f))
|
|
{
|
|
double SampleTime = FPlatformTime::Seconds();
|
|
float DeltaTime = (float)(SampleTime - LastMouseSampleTime);
|
|
FVector2f MouseDirection = MouseDelta.GetSafeNormal();
|
|
float MouseAngle = FMath::Lerp(LastMouseAngle, FMath::Atan2(-MouseDirection.Y, MouseDirection.X), FMath::Min<float>(10.0f * DeltaTime, 1.0f)); // lerp over 100ms
|
|
LastMouseAngle = MouseAngle;
|
|
LastMouseSampleTime = SampleTime;
|
|
OldMousePosition = LastMousePosition;
|
|
// UE_LOG(LogLandscape, Log, TEXT("(%f,%f) delta (%f,%f) angle %f"), LandscapeX, LandscapeY, MouseDirection.X, MouseDirection.Y, MouseAngle);
|
|
}
|
|
}
|
|
}
|
|
|
|
virtual void Tick(FEditorViewportClient* ViewportClient, float DeltaTime) override
|
|
{
|
|
FLandscapeBrushCircle::Tick(ViewportClient, DeltaTime);
|
|
|
|
ULandscapeInfo* LandscapeInfo = EdMode->CurrentToolTarget.LandscapeInfo.Get();
|
|
if (LandscapeInfo)
|
|
{
|
|
float ScaleXY = FMath::Abs(LandscapeInfo->DrawScale.X);
|
|
int32 SizeX = EdMode->UISettings->AlphaTextureSizeX;
|
|
int32 SizeY = EdMode->UISettings->AlphaTextureSizeY;
|
|
float Radius = EdMode->UISettings->BrushRadius / ScaleXY;
|
|
float MaxSize = 2.0f * FMath::Sqrt(FMath::Square(Radius) / 2.0f);
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float AlphaBrushScale = MaxSize / (float)FMath::Max<int32>(SizeX, SizeY);
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|
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|
FLinearColor BrushScaleRot(
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1.0f / (AlphaBrushScale * SizeX),
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|
1.0f / (AlphaBrushScale * SizeY),
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|
0.0f,
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|
EdMode->UISettings->bAlphaBrushAutoRotate ? LastMouseAngle : FMath::DegreesToRadians(EdMode->UISettings->AlphaBrushRotation)
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|
);
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|
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|
int32 Channel = EdMode->UISettings->AlphaTextureChannel;
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FLinearColor AlphaTextureMask(Channel == 0 ? 1 : 0, Channel == 1 ? 1 : 0, Channel == 2 ? 1 : 0, Channel == 3 ? 1 : 0);
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|
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|
for (const auto& BrushMaterialInstancePair : BrushMaterialInstanceMap)
|
|
{
|
|
UMaterialInstanceDynamic* const MaterialInstance = BrushMaterialInstancePair.Value;
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|
MaterialInstance->SetVectorParameterValue(FName(TEXT("BrushScaleRot")), BrushScaleRot);
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|
MaterialInstance->SetVectorParameterValue(FName(TEXT("AlphaTextureMask")), AlphaTextureMask);
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|
MaterialInstance->SetTextureParameterValue(FName(TEXT("AlphaTexture")), EdMode->UISettings->AlphaTexture);
|
|
}
|
|
}
|
|
}
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|
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|
virtual const TCHAR* GetBrushName() override { return TEXT("Alpha"); }
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|
virtual FText GetDisplayName() override { return NSLOCTEXT("UnrealEd", "LandscapeMode_Brush_Alpha", "Alpha"); };
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|
|
|
};
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|
|
|
|
|
void FEdModeLandscape::InitializeBrushes()
|
|
{
|
|
FLandscapeBrushSet* BrushSet;
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|
BrushSet = new(LandscapeBrushSets)FLandscapeBrushSet(TEXT("BrushSet_Circle"));
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|
BrushSet->Brushes.Add(FLandscapeBrushCircle_Smooth::Create(this));
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|
BrushSet->Brushes.Add(FLandscapeBrushCircle_Linear::Create(this));
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|
BrushSet->Brushes.Add(FLandscapeBrushCircle_Spherical::Create(this));
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|
BrushSet->Brushes.Add(FLandscapeBrushCircle_Tip::Create(this));
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|
|
|
BrushSet = new(LandscapeBrushSets)FLandscapeBrushSet(TEXT("BrushSet_Alpha"));
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|
BrushSet->Brushes.Add(FLandscapeBrushAlpha::Create(this));
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|
|
|
BrushSet = new(LandscapeBrushSets)FLandscapeBrushSet(TEXT("BrushSet_Pattern"));
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|
BrushSet->Brushes.Add(FLandscapeBrushAlphaPattern::Create(this));
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|
|
|
BrushSet = new(LandscapeBrushSets)FLandscapeBrushSet(TEXT("BrushSet_Component"));
|
|
BrushSet->Brushes.Add(new FLandscapeBrushComponent(this));
|
|
|
|
BrushSet = new(LandscapeBrushSets)FLandscapeBrushSet(TEXT("BrushSet_Gizmo"));
|
|
GizmoBrush = new FLandscapeBrushGizmo(this);
|
|
BrushSet->Brushes.Add(GizmoBrush);
|
|
|
|
BrushSet = new(LandscapeBrushSets)FLandscapeBrushSet(TEXT("BrushSet_Splines"));
|
|
BrushSet->Brushes.Add(new FLandscapeBrushSplines(this));
|
|
|
|
BrushSet = new(LandscapeBrushSets)FLandscapeBrushSet(TEXT("BrushSet_Dummy"));
|
|
BrushSet->Brushes.Add(new FLandscapeBrushDummy(this));
|
|
}
|