69 lines
1.8 KiB
C
69 lines
1.8 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/VoxelHeightmapAssetData.h"
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#include "VoxelAssets/VoxelHeightmapAssetData.inl"
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template<typename T>
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struct TVoxelHeightmapAssetSamplerWrapper
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{
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const float Scale;
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const float HeightScale;
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const float HeightOffset;
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const TVoxelSharedRef<TVoxelHeightmapAssetData<T>> Data;
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explicit VOXEL_API TVoxelHeightmapAssetSamplerWrapper(UVoxelHeightmapAsset* Asset);
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float GetHeight(v_flt X, v_flt Y, EVoxelSamplerMode SamplerMode) const
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{
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return HeightOffset + HeightScale * Data->GetHeight(float(X / Scale), float(Y / Scale), SamplerMode);
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}
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FVoxelMaterial GetMaterial(v_flt X, v_flt Y, EVoxelSamplerMode SamplerMode) const
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{
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return Data->GetMaterial(float(X / Scale), float(Y / Scale), SamplerMode);
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}
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TVoxelRange<float> GetHeightRange(TVoxelRange<v_flt> X, TVoxelRange<v_flt> Y, EVoxelSamplerMode SamplerMode) const
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{
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return HeightOffset + HeightScale * TVoxelRange<float>(Data->GetHeightRange(
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{ FMath::FloorToInt(X.Min / Scale), FMath::CeilToInt(X.Max / Scale) },
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{ FMath::FloorToInt(Y.Min / Scale), FMath::CeilToInt(Y.Max / Scale) },
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SamplerMode));
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}
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void SetHeight(int32 X, int32 Y, float Height)
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{
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ensureVoxelSlowNoSideEffects(Scale == 1.f);
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Height -= HeightOffset;
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Height /= HeightScale;
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Height = FMath::Clamp<float>(Height, TNumericLimits<T>::Lowest(), TNumericLimits<T>::Max());
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if (TIsSame<T, float>::Value)
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{
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Data->SetHeight(X, Y, Height);
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}
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else
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{
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Data->SetHeight(X, Y, FMath::RoundToInt(Height));
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}
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}
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float GetMinHeight() const
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{
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return HeightOffset + HeightScale * Data->GetMinHeight();
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}
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float GetMaxHeight() const
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{
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return HeightOffset + HeightScale * Data->GetMaxHeight();
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}
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float GetWidth() const
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{
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return Scale * Data->GetWidth();
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}
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float GetHeight() const
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{
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return Scale * Data->GetHeight();
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}
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};
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