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This will be (optionally) used to generate the dominant physical material for each point on a landscape. #ROBOMERGE-SOURCE: CL 12090687 via CL 12092289 #ROBOMERGE-BOT: (v657-12064184) [CL 12092374 by jeremy moore in Main branch]
108 lines
2.7 KiB
C++
108 lines
2.7 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "Materials/MaterialExpressionLandscapePhysicalMaterialOutput.h"
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#include "Engine/Engine.h"
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#include "EngineGlobals.h"
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#include "MaterialCompiler.h"
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#include "PhysicalMaterials/PhysicalMaterial.h"
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#define LOCTEXT_NAMESPACE "Landscape"
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UMaterialExpressionLandscapePhysicalMaterialOutput::UMaterialExpressionLandscapePhysicalMaterialOutput(const FObjectInitializer& ObjectInitializer)
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: Super(ObjectInitializer)
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{
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// Structure to hold one-time initialization
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struct FConstructorStatics
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{
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FText NAME_Landscape;
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FConstructorStatics()
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: NAME_Landscape(LOCTEXT("Landscape", "Landscape"))
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{
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}
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};
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static FConstructorStatics ConstructorStatics;
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#if WITH_EDITORONLY_DATA
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MenuCategories.Add(ConstructorStatics.NAME_Landscape);
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// No outputs
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Outputs.Reset();
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#endif
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}
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#if WITH_EDITOR
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void UMaterialExpressionLandscapePhysicalMaterialOutput::GetCaption(TArray<FString>& OutCaptions) const
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{
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OutCaptions.Add(FString(TEXT("Landscape Physical Material Output")));
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}
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const TArray<FExpressionInput*> UMaterialExpressionLandscapePhysicalMaterialOutput::GetInputs()
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{
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TArray<FExpressionInput*> OutInputs;
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for (auto& Input : Inputs)
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{
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OutInputs.Add(&Input.Input);
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}
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return OutInputs;
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}
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FExpressionInput* UMaterialExpressionLandscapePhysicalMaterialOutput::GetInput(int32 InputIndex)
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{
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return &Inputs[InputIndex].Input;
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}
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FName UMaterialExpressionLandscapePhysicalMaterialOutput::GetInputName(int32 InputIndex) const
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{
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UPhysicalMaterial* PhysicalMaterial = Inputs[InputIndex].PhysicalMaterial;
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if (PhysicalMaterial != nullptr)
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{
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return PhysicalMaterial->GetFName();
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}
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return NAME_None;
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}
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int32 UMaterialExpressionLandscapePhysicalMaterialOutput::Compile(class FMaterialCompiler* Compiler, int32 OutputIndex)
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{
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if (Inputs.IsValidIndex(OutputIndex))
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{
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if (Inputs[OutputIndex].PhysicalMaterial == nullptr)
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{
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return CompilerError(Compiler, TEXT("Physical material not set."));
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}
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if (Inputs[OutputIndex].Input.Expression == nullptr)
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{
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return CompilerError(Compiler, TEXT("Input missing."));
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}
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return Compiler->CustomOutput(this, OutputIndex, Inputs[OutputIndex].Input.Compile(Compiler));
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}
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return INDEX_NONE;
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}
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void UMaterialExpressionLandscapePhysicalMaterialOutput::PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent)
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{
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Super::PostEditChangeProperty(PropertyChangedEvent);
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if (PropertyChangedEvent.MemberProperty)
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{
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const FName PropertyName = PropertyChangedEvent.MemberProperty->GetFName();
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if (PropertyName == GET_MEMBER_NAME_CHECKED(UMaterialExpressionLandscapePhysicalMaterialOutput, Inputs))
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{
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if (GraphNode)
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{
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GraphNode->ReconstructNode();
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}
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}
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}
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}
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#endif // WITH_EDITOR
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#undef LOCTEXT_NAMESPACE
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