UnrealEngineUWP/Engine/Source/Editor/LandscapeEditor/Classes/LandscapeEditorObject.h

// Copyright 1998-2014 Epic Games, Inc. All Rights Reserved.

#pragma once

#include "Landscape/LandscapeProxy.h" // for ELandscapeLayerPaintingRestriction
#include "LandscapeEditorObject.generated.h"

UENUM()
namespace ELandscapeToolFlattenMode
{
	enum Type
	{
		//Invalid = -1,

		// Flatten may both raise and lower values
		Both = 0,

		// Flatten may only raise values, values above the clicked point will be left unchanged
		Raise = 1,

		// Flatten may only lower values, values below the clicked point will be left unchanged
		Lower = 2,
	};
}

UENUM()
namespace ELandscapeToolErosionMode
{
	enum Type
	{
		//Invalid = -1,

		// Apply all erosion effects, both raising and lowering the heightmap
		Both = 0,

		// Only applies erosion effects that result in raising the heightmap
		Raise = 1,

		// Only applies erosion effects that result in lowering the heightmap
		Lower = 2,
	};
}

UENUM()
namespace ELandscapeToolHydroErosionMode
{
	enum Type
	{
		//Invalid = -1,

		// Rains in some places and not others, randomly
		Both = 0,

		// Rain is applied to the entire area
		Positive = 1,
	};
}

// Temp
#if !CPP
UENUM()
namespace ELandscapeToolNoiseMode
{
	enum Type
	{
		//Invalid = -1,

		// Noise will both raise and lower the heightmap
		Both = 0,

		// Noise will only raise the heightmap
		Raise = 1,

		// Noise will only lower the heightmap
		Lower = 2,
	};
}
#endif

UENUM()
namespace ELandscapeToolPasteMode
{
	enum Type
	{
		//Invalid = -1,

		// Paste may both raise and lower values
		Both = 0,

		// Paste may only raise values, places where the pasted data would be below the heightmap are left unchanged. Good for copy/pasting mountains
		Raise = 1,

		// Paste may only lower values, places where the pasted data would be above the heightmap are left unchanged. Good for copy/pasting valleys or pits
		Lower = 2,
	};
}

UENUM()
namespace ELandscapeConvertMode
{
	enum Type
	{
		//Invalid = -1,

		// Given the new component size, the edges of the landscape will be expanded as necessary until its overall size is a whole number of landscape components.
		Expand = 0,

		// Given the new component size, the edges of the landscape will be trimmed until its overall size is a whole number of landscape components.
		Clip = 1,

		// The landscape will have the same overall size in the world, and have the same number of components. Existing landscape geometry and layer data will be resampled to match the new resolution.
		Resample = 2,
	};
}

UENUM()
namespace EColorChannel
{
	enum Type
	{
		Red,
		Green,
		Blue,
		Alpha,
	};
}

USTRUCT()
struct FGizmoImportLayer
{
	GENERATED_USTRUCT_BODY()

	UPROPERTY(Category="Import", EditAnywhere)
	FString LayerFilename;

	UPROPERTY(Category="Import", EditAnywhere)
	FString LayerName;

	UPROPERTY(Category="Import", EditAnywhere)
	bool bNoImport;

	FGizmoImportLayer()
		: LayerFilename("")
		, LayerName("")
		, bNoImport(false)
	{
	}
};

UENUM()
namespace ELandscapeImportHeightmapError
{
	enum Type
	{
		None,
		FileNotFound,
		InvalidSize,
		CorruptFile,
		ColorPng,
		LowBitDepth,
	};
}

UENUM()
enum class ELandscapeImportLayerError : uint8
{
	None,
	MissingLayerInfo,
	FileNotFound,
	FileSizeMismatch,
	CorruptFile,
	ColorPng,
};

USTRUCT()
struct FLandscapeImportLayer : public FLandscapeImportLayerInfo
{
	GENERATED_USTRUCT_BODY()

	UPROPERTY(Category="Import", VisibleAnywhere)
	ELandscapeImportLayerError ImportError;

	FLandscapeImportLayer()
		: FLandscapeImportLayerInfo()
		, ImportError(ELandscapeImportLayerError::None)
	{
	}
};

UCLASS()
class ULandscapeEditorObject : public UObject
{
	GENERATED_UCLASS_BODY()

	FEdModeLandscape* ParentMode;


	// Common Tool Settings:

	// Strength of the tool
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(ShowForTools="Paint,Sculpt,Smooth,Flatten,Erosion,HydraErosion,Noise,Mask,CopyPaste", ClampMin="0", ClampMax="10", UIMin="0", UIMax="1"))
	float ToolStrength;

	// Enable to make tools blend towards a target value
	UPROPERTY(NonTransactional)
	bool bUseWeightTargetValue;

	// Enable to make tools blend towards a target value
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Use Target Value", editcondition="bUseWeightTargetValue", ShowForTools="Paint,Sculpt,Noise", ClampMin="0", ClampMax="10", UIMin="0", UIMax="1"))
	float WeightTargetValue;

	// I have no idea what this is for but it's used by the noise and erosion tools, and isn't exposed to the UI
	UPROPERTY(NonTransactional)
	float MaximumValueRadius;

	// Flatten Tool:

	// Whether to flatten by lowering, raising, or both
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(ShowForTools="Flatten"))
	TEnumAsByte<ELandscapeToolFlattenMode::Type> FlattenMode;

	// Flattens to the angle of the clicked point, instead of horizontal
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(ShowForTools="Flatten", ShowForTargetTypes="Heightmap"))
	bool bUseSlopeFlatten;

	// Constantly picks new values to flatten towards when dragging around, instead of only using the first clicked point
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(ShowForTools="Flatten", ShowForTargetTypes="Heightmap"))
	bool bPickValuePerApply;

	// Enable to flatten towards a target height
	UPROPERTY(NonTransactional)
	bool bUseFlattenTarget;

	// Target height to flatten towards (in Unreal Units)
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(ShowForTools="Flatten", ShowForTargetTypes="Heightmap", editcondition="bUseFlattenTarget", UIMin="-32768", UIMax="32768"))
	float FlattenTarget;

	// Whether to show the preview grid for the flatten target height
	UPROPERTY(Category = "Tool Settings", EditAnywhere, NonTransactional, AdvancedDisplay, meta = (DisplayName = "Show Preview Grid", ShowForTools = "Flatten", ShowForTargetTypes = "Heightmap", editcondition = "bUseFlattenTarget", HideEditConditionToggle, UIMin = "-32768", UIMax = "32768"))
	bool bShowFlattenTargetPreview;

	// Ramp Tool:

	// Width of ramp
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(ShowForTools="Ramp", ClampMin="1", UIMin="1", UIMax="8192", SliderExponent=3))
	float RampWidth;

	// Falloff on side of ramp
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Side Falloff", ShowForTools="Ramp", ClampMin="0", ClampMax="1", UIMin="0", UIMax="1"))
	float RampSideFalloff;

	// Smooth Tool:

	// Scale multiplier for the smoothing filter kernel
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Filter Kernel Scale", ShowForTools="Smooth", ClampMin="0", ClampMax="1", UIMin="0", UIMax="1"))
	float SmoothFilterKernelScale;

	// If checked, performs a detail preserving smooth using the specified detail smoothing value
	UPROPERTY(NonTransactional)
	bool bDetailSmooth;

	// Larger detail smoothing values remove more details, while smaller values preserve more details
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Detail Smooth", editcondition="bDetailSmooth", ShowForTools="Smooth", ClampMin="0", ClampMax="0.99"))
	float DetailScale;

	// Erosion Tool:

	// The minimum height difference necessary for the erosion effects to be applied. Smaller values will result in more erosion being applied
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Threshold", ShowForTools="Erosion", ClampMin="0", ClampMax="256", UIMin="0", UIMax="128"))
	int32 ErodeThresh;

	// The thickness of the surface for the layer weight erosion effect
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Surface Thickness", ShowForTools="Erosion", ClampMin="128", ClampMax="1024", UIMin="128", UIMax="512"))
	int32 ErodeSurfaceThickness;

	// Number of erosion iterations, more means more erosion but is slower
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Iterations", ShowForTools="Erosion", ClampMin="1", ClampMax="300", UIMin="1", UIMax="150"))
	int32 ErodeIterationNum;

	// Whether to erode by lowering, raising, or both
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Noise Mode", ShowForTools="Erosion"))
	TEnumAsByte<ELandscapeToolErosionMode::Type> ErosionNoiseMode;

	// The size of the perlin noise filter used
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Noise Scale", ShowForTools="Erosion", ClampMin="1", ClampMax="512", UIMin="1.1", UIMax="256"))
	float ErosionNoiseScale;

	// Hydraulic Erosion Tool:

	// The amount of rain to apply to the surface. Larger values will result in more erosion
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(ShowForTools="HydraErosion", ClampMin="1", ClampMax="512", UIMin="1", UIMax="256"))
	int32 RainAmount;

	// The amount of sediment that the water can carry. Larger values will result in more erosion
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Sediment Cap.", ShowForTools="HydraErosion", ClampMin="0.1", ClampMax="1.0"))
	float SedimentCapacity;

	// Number of erosion iterations, more means more erosion but is slower
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Iterations", ShowForTools="HydraErosion", ClampMin="1", ClampMax="300", UIMin="1", UIMax="150"))
	int32 HErodeIterationNum;

	// Initial Rain Distribution
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Initial Rain Distribution", ShowForTools="HydraErosion"))
	TEnumAsByte<ELandscapeToolHydroErosionMode::Type> RainDistMode;

	// The size of the noise filter for applying initial rain to the surface
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(ShowForTools="HydraErosion", ClampMin="1", ClampMax="512", UIMin="1.1", UIMax="256"))
	float RainDistScale;

	// If checked, performs a detail-preserving smooth to the erosion effect using the specified detail smoothing value
	UPROPERTY(NonTransactional)
	bool bHErosionDetailSmooth;

	// Larger detail smoothing values remove more details, while smaller values preserve more details
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Detail Smooth", editcondition="bHErosionDetailSmooth", ShowForTools="HydraErosion", ClampMin="0", ClampMax="0.99"))
	float HErosionDetailScale;

	// Noise Tool:

	// Whether to apply noise that raises, lowers, or both
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Noise Mode", ShowForTools="Noise"))
	TEnumAsByte<ELandscapeToolNoiseMode::Type> NoiseMode;

	// The size of the perlin noise filter used
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Noise Scale", ShowForTools="Noise", ClampMin="1", ClampMax="512", UIMin="1.1", UIMax="256"))
	float NoiseScale;

	// Mask Tool:

	// Uses selected region as a mask for other tools
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Use Region as Mask", ShowForTools="Mask", ShowForMask))
	bool bUseSelectedRegion;

	// If enabled, protects the selected region from changes
	// If disabled, only allows changes in the selected region
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Negative Mask", ShowForTools="Mask", ShowForMask))
	bool bUseNegativeMask;

	// Copy/Paste Tool:

	// Whether to paste will only raise, only lower, or both
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(ShowForTools="CopyPaste"))
	TEnumAsByte<ELandscapeToolPasteMode::Type> PasteMode;

	// If set, copies/pastes all layers, otherwise only copy/pastes the layer selected in the targets panel
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Gizmo copy/paste all layers", ShowForTools="CopyPaste"))
	bool bApplyToAllTargets;

	// Makes sure the gizmo is snapped perfectly to the landscape so that the sample points line up, which makes copy/paste less blurry. Irrelevant if gizmo is scaled
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Snap Gizmo to Landscape grid", ShowForTools="CopyPaste"))
	bool bSnapGizmo;

	// Smooths the edges of the gizmo data into the landscape. Without this, the edges of the pasted data will be sharp
	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Use Smooth Gizmo Brush", ShowForTools="CopyPaste"))
	bool bSmoothGizmoBrush;

	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, AdvancedDisplay, meta=(DisplayName="Heightmap", ShowForTools="CopyPaste"))
	FString GizmoHeightmapFilenameString;

	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, AdvancedDisplay, meta=(DisplayName="Heightmap Size", ShowForTools="CopyPaste"))
	FIntPoint GizmoImportSize;

	UPROPERTY(Category="Tool Settings", EditAnywhere, NonTransactional, AdvancedDisplay, meta=(DisplayName="Layers", ShowForTools="CopyPaste"))
	TArray<FGizmoImportLayer> GizmoImportLayers;

	TArray<FGizmoHistory> GizmoHistories;


	// Resize Landscape Tool

	// Number of quads per landscape component section
	UPROPERTY(Category="Change Component Size", EditAnywhere, NonTransactional, meta=(DisplayName="Section Size", ShowForTools="ResizeLandscape"))
	int32 ResizeLandscape_QuadsPerSection;

	// Number of sections per landscape component
	UPROPERTY(Category="Change Component Size", EditAnywhere, NonTransactional, meta=(DisplayName="Sections Per Component", ShowForTools="ResizeLandscape"))
	int32 ResizeLandscape_SectionsPerComponent;

	// Number of components in resulting landscape
	UPROPERTY(Category="Change Component Size", EditAnywhere, NonTransactional, meta=(DisplayName="Number of Components", ShowForTools="ResizeLandscape"))
	FIntPoint ResizeLandscape_ComponentCount;

	// Determines how the new component size will be applied to the existing landscape geometry.
	UPROPERTY(Category="Change Component Size", EditAnywhere, NonTransactional, meta=(DisplayName="Resize Mode", ShowForTools="ResizeLandscape"))
	TEnumAsByte<ELandscapeConvertMode::Type> ResizeLandscape_ConvertMode;

	int32 ResizeLandscape_Original_QuadsPerSection;
	int32 ResizeLandscape_Original_SectionsPerComponent;
	FIntPoint ResizeLandscape_Original_ComponentCount;

	// New Landscape "Tool"

	// Material initially applied to the landscape. Setting a material here exposes properties for setting up layer info based on the landscape blend nodes in the material.
	UPROPERTY(Category="New Landscape", EditAnywhere, meta=(DisplayName="Material", ShowForTools="NewLandscape"))
	TWeakObjectPtr<UMaterialInterface> NewLandscape_Material;

	// The number of quads in a single landscape section. One section is the unit of LOD transition for landscape rendering.
	UPROPERTY(Category="New Landscape", EditAnywhere, meta=(DisplayName="Section Size", ShowForTools="NewLandscape"))
	int32 NewLandscape_QuadsPerSection;

	// The number of sections in a single landscape component. This along with the section size determines the size of each landscape component. A component is the base unit of rendering and culling.
	UPROPERTY(Category="New Landscape", EditAnywhere, meta=(DisplayName="Sections Per Component", ShowForTools="NewLandscape"))
	int32 NewLandscape_SectionsPerComponent;

	// The number of components in the X and Y direction, determining the overall size of the landscape.
	UPROPERTY(Category="New Landscape", EditAnywhere, meta=(DisplayName="Number of Components", ShowForTools="NewLandscape"))
	FIntPoint NewLandscape_ComponentCount;

	// The location of the new landscape
	UPROPERTY(Category="New Landscape", EditAnywhere, meta=(DisplayName="Location", ShowForTools="NewLandscape"))
	FVector NewLandscape_Location;

	// The rotation of the new landscape
	UPROPERTY(Category="New Landscape", EditAnywhere, meta=(DisplayName="Rotation", ShowForTools="NewLandscape"))
	FRotator NewLandscape_Rotation;

	// The scale of the new landscape. This is the distance between each vertex on the landscape, defaulting to 100 units.
	UPROPERTY(Category="New Landscape", EditAnywhere, meta=(DisplayName="Scale", ShowForTools="NewLandscape"))
	FVector NewLandscape_Scale;

	UPROPERTY(Category="New Landscape", VisibleAnywhere, NonTransactional, meta=(ShowForTools="NewLandscape"))
	TEnumAsByte<ELandscapeImportHeightmapError::Type> ImportLandscape_HeightmapError;

	// Specify a height map file in 16-bit RAW or PNG format
	UPROPERTY(Category="New Landscape", EditAnywhere, NonTransactional, meta=(DisplayName="Heightmap File", ShowForTools="NewLandscape"))
	FString ImportLandscape_HeightmapFilename;
	UPROPERTY(NonTransactional)
	int32 ImportLandscape_Width;
	UPROPERTY(NonTransactional)
	int32 ImportLandscape_Height;
	UPROPERTY(NonTransactional)
	TArray<uint16> ImportLandscape_Data;

	// The landscape layers that will be created. Only layer names referenced in the material assigned above are shown here. Modify the material to add more layers.
	UPROPERTY(Category="New Landscape", EditAnywhere, NonTransactional, EditFixedSize, meta=(DisplayName="Layers", ShowForTools="NewLandscape"))
	TArray<FLandscapeImportLayer> ImportLandscape_Layers;

	// Common Brush Settings:

	// The radius of the brush, in unreal units
	UPROPERTY(Category="Brush Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Brush Size", ShowForBrushes="BrushSet_Circle,BrushSet_Alpha,BrushSet_Pattern", ClampMin="1", ClampMax="65536", UIMin="1", UIMax="8192", SliderExponent="3"))
	float BrushRadius;

	// The falloff at the edge of the brush, as a fraction of the brush's size. 0 = no falloff, 1 = all falloff
	UPROPERTY(Category="Brush Settings", EditAnywhere, NonTransactional, meta=(ShowForBrushes="BrushSet_Circle,BrushSet_Gizmo,BrushSet_Pattern", ClampMin="0", ClampMax="1"))
	float BrushFalloff;

	// Selects the Clay Brush painting mode
	UPROPERTY(Category="Brush Settings", EditAnywhere, NonTransactional, meta=(ShowForTools="Sculpt", ShowForBrushes="BrushSet_Circle,BrushSet_Alpha,BrushSet_Pattern"))
	bool bUseClayBrush;

	// Alpha/Pattern Brush:

	// Scale of the brush texture. A scale of 1.000 maps the brush texture to the landscape at a 1 pixel = 1 vertex size
	UPROPERTY(Category="Brush Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Texture Scale", ShowForBrushes="BrushSet_Pattern", ClampMin="0.005", ClampMax="5", SliderExponent="3"))
	float AlphaBrushScale;

	// Rotate brush to follow mouse
	UPROPERTY(Category = "Brush Settings", EditAnywhere, NonTransactional, meta = (DisplayName = "Auto-Rotate", ShowForBrushes = "BrushSet_Alpha"))
	bool bAlphaBrushAutoRotate;

	// Rotates the brush mask texture
	UPROPERTY(Category="Brush Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Texture Rotation", ShowForBrushes="BrushSet_Alpha,BrushSet_Pattern", ClampMin="-360", ClampMax="360", UIMin="-180", UIMax="180"))
	float AlphaBrushRotation;

	// Horizontally offsets the brush mask texture
	UPROPERTY(Category="Brush Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Texture Pan U", ShowForBrushes="BrushSet_Pattern", ClampMin="0", ClampMax="1"))
	float AlphaBrushPanU;

	// Vertically offsets the brush mask texture
	UPROPERTY(Category="Brush Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Texture Pan V", ShowForBrushes="BrushSet_Pattern", ClampMin="0", ClampMax="1"))
	float AlphaBrushPanV;

	// Mask texture to use
	UPROPERTY(Category="Brush Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Texture", ShowForBrushes="BrushSet_Alpha,BrushSet_Pattern"))
	UTexture2D* AlphaTexture;

	// Channel of Mask Texture to use
	UPROPERTY(Category="Brush Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Texture Channel", ShowForBrushes="BrushSet_Alpha,BrushSet_Pattern"))
	TEnumAsByte<EColorChannel::Type> AlphaTextureChannel;

	UPROPERTY(NonTransactional)
	int32 AlphaTextureSizeX;
	UPROPERTY(NonTransactional)
	int32 AlphaTextureSizeY;
	UPROPERTY(NonTransactional)
	TArray<uint8> AlphaTextureData;

	// Component Brush:

	// Number of components X/Y to affect at once. 1 means 1x1, 2 means 2x2, etc
	UPROPERTY(Category="Brush Settings", EditAnywhere, NonTransactional, meta=(DisplayName="Brush Size", ShowForBrushes="BrushSet_Component", ClampMin="1", ClampMax="128", UIMin="1", UIMax="64", SliderExponent="3"))
	int32 BrushComponentSize;


	// Target Layer Settings:

	// Limits painting to only the components that already have the selected layer
	UPROPERTY(Category="Target Layers", EditAnywhere, NonTransactional, meta=(ShowForTargetTypes="Weightmap,Visibility"))
	TEnumAsByte<ELandscapeLayerPaintingRestriction::Type> PaintingRestriction;

#if WITH_EDITOR
	// Begin UObject Interface
	void PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent) override;
	// End UObject Interface
#endif // WITH_EDITOR

	void Load();
	void Save();

	// Region
	void SetbUseSelectedRegion(bool InbUseSelectedRegion);
	void SetbUseNegativeMask(bool InbUseNegativeMask);

	// Copy/Paste
	void SetPasteMode(ELandscapeToolPasteMode::Type InPasteMode);
	void GuessGizmoImportSize();

	// Alpha/Pattern Brush
	bool SetAlphaTexture(UTexture2D* InTexture, EColorChannel::Type InTextureChannel);

	// New Landscape
	FString LastImportPath;

	const TArray<uint16>& GetImportLandscapeData();
	void ClearImportLandscapeData() { ImportLandscape_Data.Empty(); }

	void RefreshImportLayersList();

	void NewLandscape_ClampSize()
	{
		// Max size is either whole components below 8192 verts, or 32 components
		NewLandscape_ComponentCount.X = FMath::Clamp(NewLandscape_ComponentCount.X, 1, FMath::Min(32, FMath::FloorToInt(8191 / (NewLandscape_SectionsPerComponent * NewLandscape_QuadsPerSection))));
		NewLandscape_ComponentCount.Y = FMath::Clamp(NewLandscape_ComponentCount.Y, 1, FMath::Min(32, FMath::FloorToInt(8191 / (NewLandscape_SectionsPerComponent * NewLandscape_QuadsPerSection))));
	}

	void UpdateComponentCount()
	{
		// ignore invalid cases
		if (ResizeLandscape_QuadsPerSection == 0 || ResizeLandscape_SectionsPerComponent == 0 ||ResizeLandscape_ComponentCount.X == 0 || ResizeLandscape_ComponentCount.Y == 0) 
		{
			return;
		}
		const int32 ComponentSizeQuads = ResizeLandscape_QuadsPerSection * ResizeLandscape_SectionsPerComponent;
		const int32 Original_ComponentSizeQuads = ResizeLandscape_Original_QuadsPerSection * ResizeLandscape_Original_SectionsPerComponent;
		const FIntPoint OriginalResolution = ResizeLandscape_Original_ComponentCount * Original_ComponentSizeQuads;
		switch (ResizeLandscape_ConvertMode)
		{
		case ELandscapeConvertMode::Expand:
			ResizeLandscape_ComponentCount.X = FMath::DivideAndRoundUp(OriginalResolution.X, ComponentSizeQuads);
			ResizeLandscape_ComponentCount.Y = FMath::DivideAndRoundUp(OriginalResolution.Y, ComponentSizeQuads);
			break;
		case ELandscapeConvertMode::Clip:
			ResizeLandscape_ComponentCount.X = FMath::Max(1, OriginalResolution.X / ComponentSizeQuads);
			ResizeLandscape_ComponentCount.Y = FMath::Max(1, OriginalResolution.Y / ComponentSizeQuads);
			break;
		case ELandscapeConvertMode::Resample:
			ResizeLandscape_ComponentCount = ResizeLandscape_Original_ComponentCount;
			break;
		default:
			check(0);
		}
	}

	void SetbSnapGizmo(bool InbSnapGizmo);

	void SetParent(FEdModeLandscape* LandscapeParent)
	{
		ParentMode = LandscapeParent;
	}
};