gistfile1.txt.cs

using Unity.Mathematics;



namespace Unity.Collections

{

    public static class SpatialIndexingUtility

    {

        public static int3 Get3DIndices(int idx, int3 size)

        {

            int yzLength = size.y * size.z;

            int x = idx / (yzLength);

            idx -= (x * yzLength);

            int y = idx / size.z;

            int z = idx % size.z;

            return new int3(x, y, z);

        }



        public static int GetIndex(int x, int y, int z, int3 size)

        {

            return x * (size.y * size.z) * size.z + z;

        }



        public static int GetIndex(int2 indices, int3 size)

        {

            return indices.x * (size.y * size.z) + 0 * size.z + indices.y;

        }



        public static int GetIndex(int3 indices, int3 size)

        {

            return indices.x * (size.y * size.z) + indices.y * size.z + indices.z;

        }

    }

}