DrawDebugIntBox Blueprint node draws with an offset for cubic voxel worlds

[jdies]

Setup

UE 4.26 (source)
First person template
VoxelPlugin free, downloaded today (12.09.21) from here https://drive.google.com/drive/folders/1qzTSk_vdp-niSOmi3syL0yOAGiftvx3x

Blueprint

Also tested with supplying the transform of VoxelWorld to DrawDebugIntBox. Same result.

Result

Expected

Edited bounds should not be offset. It should look like an outline of the filled voxel.

[jdies]

Closing after discussion on Discord.

Phyronnaz — Today at 2:04 PM
Its just that it doesn't work great with cubic due to the cubes being offset by half a voxel

[jdies]

Workaround

I only use cubic in my project, so I can just modify the C++ code and offset DrawDebugIntBox by .5 voxels.

This works for me (voxel size is 200)

void UVoxelDebugUtilities::DrawDebugIntBox(
	const FVoxelCoordinatesProvider& World,
	UVoxelLineBatchComponent& LineBatchComponent, 
	FTransform Transform,
	FVoxelIntBox Box, 
	float Lifetime, 
	float Thickness,
	FLinearColor Color)
{
	VOXEL_FUNCTION_COUNTER();
	
	// Put it in local voxel world space
	const FVector Min = LineBatchComponent.GetComponentTransform().InverseTransformPosition(World.LocalToGlobal(Box.Min)) - FVector(World.GetVoxelSize() * 0.45f);
	const FVector Max = LineBatchComponent.GetComponentTransform().InverseTransformPosition(World.LocalToGlobal(Box.Max)) - FVector(World.GetVoxelSize() * 0.45f);
	const FBox DebugBox(Min, Max);
	DrawDebugBox(LineBatchComponent, Transform, DebugBox, Lifetime, Thickness, Color);
}

Cool