85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
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// Copyright 2020 Phyronnaz
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#pragma once
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#include "CoreMinimal.h"
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#include "VoxelAssets/VoxelDataAsset.h"
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#include "VoxelGenerators/VoxelGeneratorHelpers.h"
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class FVoxelDataAssetInstance : public TVoxelGeneratorInstanceHelper<FVoxelDataAssetInstance, UVoxelDataAsset>
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{
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public:
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using Super = TVoxelGeneratorInstanceHelper<FVoxelDataAssetInstance, UVoxelDataAsset>;
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const TVoxelSharedRef<const FVoxelDataAssetData> Data;
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const bool bSubtractiveAsset;
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const FIntVector PositionOffset;
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float Tolerance = 0.f;
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public:
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FVoxelDataAssetInstance(UVoxelDataAsset& Asset)
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: Super(&Asset)
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, Data(Asset.GetData())
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, bSubtractiveAsset(Asset.bSubtractiveAsset)
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, PositionOffset(Asset.PositionOffset)
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, Tolerance(Asset.Tolerance)
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{
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}
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//~ Begin FVoxelGeneratorInstance Interface
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virtual void Init(const FVoxelGeneratorInit& InitStruct) override
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{
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if (InitStruct.RenderType == EVoxelRenderType::Cubic)
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{
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Tolerance = FMath::Max(Tolerance, 0.1f);
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}
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}
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v_flt GetValueImpl(v_flt X, v_flt Y, v_flt Z, int32 LOD, const FVoxelItemStack& Items) const
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{
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X -= PositionOffset.X;
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Y -= PositionOffset.Y;
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Z -= PositionOffset.Z;
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return Data->GetInterpolatedValue(X, Y, Z, bSubtractiveAsset ? FVoxelValue::Full() : FVoxelValue::Empty(), Tolerance);
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}
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FVoxelMaterial GetMaterialImpl(v_flt X, v_flt Y, v_flt Z, int32 LOD, const FVoxelItemStack& Items) const
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{
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X -= PositionOffset.X;
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Y -= PositionOffset.Y;
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Z -= PositionOffset.Z;
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if (Data->HasMaterials())
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{
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return Data->GetInterpolatedMaterial(X, Y, Z, Tolerance);
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}
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else
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{
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return FVoxelMaterial::Default();
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}
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}
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TVoxelRange<v_flt> GetValueRangeImpl(const FVoxelIntBox& Bounds, int32 LOD, const FVoxelItemStack& Items) const
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{
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if (Bounds.Intersect(GetLocalBounds()))
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{
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return { -1, 1 };
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}
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else
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{
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return bSubtractiveAsset ? -1 : 1;
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}
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}
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FVector GetUpVector(v_flt X, v_flt Y, v_flt Z) const override final
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{
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return FVector::UpVector;
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}
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//~ End FVoxelGeneratorInstance Interface
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private:
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FORCEINLINE FVoxelIntBox GetLocalBounds() const
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{
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return FVoxelIntBox(PositionOffset, PositionOffset + Data->GetSize());
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}
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};
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