private void CreateVoxelData()
{
PackedUniformVolume =
new PackedUniformVolume(PackedUniformVolume.VoxelWorldScaleInMeters, PackedUniformVolume.Depth);
var voxelHalfScale = PackedUniformVolume.GetVolumeWorldScale() / PackedUniformVolume.GetSideBitCount() /
2.0f;
var index = 0;
var volumeDimensions = PackedUniformVolume.GetVolumeBitDimensions();
for (var y = 0; y < volumeDimensions.y; y++)
{
for (var z = 0; z < volumeDimensions.z; z++)
{
for (var x = 0; x < volumeDimensions.x; x++)
{
var position = new float3(x, y, z);
var worldPosition = (float3)transform.position +
position * PackedUniformVolume.VoxelWorldScaleInMeters;
if (Physics.OverlapBox(worldPosition, voxelHalfScale).Length > 0)
{
var packedIndex = index / 32;
var bitIndex = index % 32;
PackedUniformVolume.Voxels[packedIndex] |= 1u << bitIndex;
}
index++;
}
}
}
Debug.Log($"Volume dimensions: {PackedUniformVolume.GetVolumeBitDimensions()}");
}
public static Mesh CreateDebugMesh(PackedUniformVolume packedUniformVolume)
{
int[] GetQuadIndicesArray(int i0, int i1, int i2, int i3)
{
return(new[] {
i0,
i1,
i2,
i2,
i3,
i0,
});
}
var vertices = new List <Vector3>();
var indices = new List <int>();
var voxelHalfScale = packedUniformVolume.GetVolumeWorldScale() / packedUniformVolume.GetSideBitCount() / 2.0f;
var index = 0;
var volumeDimensions = packedUniformVolume.GetVolumeBitDimensions();
for (var y = 0; y < volumeDimensions.y; y++)
{
for (var z = 0; z < volumeDimensions.z; z++)
{
for (var x = 0; x < volumeDimensions.x; x++)
{
var position = new float3(x, y, z);
var worldPosition = position * packedUniformVolume.VoxelWorldScaleInMeters;
var packedIndex = index / 32;
var bitIndex = index % 32;
var isOccupied = (packedUniformVolume.Voxels[packedIndex] & (1u << bitIndex)) > 0;
if (isOccupied)
{
vertices.AddRange(new Vector3[] {
worldPosition + new float3(-voxelHalfScale.x, -voxelHalfScale.y, -voxelHalfScale.z),
worldPosition + new float3(-voxelHalfScale.x, -voxelHalfScale.y, +voxelHalfScale.z),
worldPosition + new float3(+voxelHalfScale.x, -voxelHalfScale.y, +voxelHalfScale.z),
worldPosition + new float3(+voxelHalfScale.x, -voxelHalfScale.y, -voxelHalfScale.z),
worldPosition + new float3(-voxelHalfScale.x, +voxelHalfScale.y, -voxelHalfScale.z),
worldPosition + new float3(-voxelHalfScale.x, +voxelHalfScale.y, +voxelHalfScale.z),
worldPosition + new float3(+voxelHalfScale.x, +voxelHalfScale.y, +voxelHalfScale.z),
worldPosition + new float3(+voxelHalfScale.x, +voxelHalfScale.y, -voxelHalfScale.z),
});
var vertexCount = vertices.Count;
indices.AddRange(GetQuadIndicesArray(vertexCount - 4, vertexCount - 3, vertexCount - 2, vertexCount - 1));
indices.AddRange(GetQuadIndicesArray(vertexCount - 5, vertexCount - 6, vertexCount - 7, vertexCount - 8));
indices.AddRange(GetQuadIndicesArray(vertexCount - 5, vertexCount - 1, vertexCount - 2, vertexCount - 6));
indices.AddRange(GetQuadIndicesArray(vertexCount - 8, vertexCount - 7, vertexCount - 3, vertexCount - 4));
indices.AddRange(GetQuadIndicesArray(vertexCount - 8, vertexCount - 4, vertexCount - 1, vertexCount - 5));
indices.AddRange(GetQuadIndicesArray(vertexCount - 7, vertexCount - 6, vertexCount - 2, vertexCount - 3));
}
index++;
}
}
}
var mesh = new Mesh
{
indexFormat = UnityEngine.Rendering.IndexFormat.UInt32,
vertices = vertices.ToArray(),
triangles = indices.ToArray()
};
mesh.RecalculateNormals();
return(mesh);
}
