{
    "DefineFunctions": [
        "r_angle()=360*rnd()",
        "r_size()=400*rnd()"
    ],
    "Filling": {
        "cells": [
            {
                "_comment": "This is for the dynamic ECM",
                "shape": "cube",
                "box": [
                  [0, 0, 0],
                  [399, 399, 401]
                ],
                "value": 0,
                "celltype": 0
            },
            {
                "shape": "sphere",
                "pattern": "voronoi",
                "count": 5500,
                "radius": 75,
                "center": [
                    200,
                    200,
                    200
                ],
                "box": [
                    [
                        110,
                        110,
                        110
                    ],
                    [
                        290,
                        290,
                        290
                    ]
                ],
                "celltype": 9
            }
        ]
    }
}