config-example.json

{
  "sun": {
    "altitude": 6,
    "diameter": 0.5
  },
  "ray": {
    "number": 100000,
    "wavelength": [ 420, 460, 500, 540, 580, 620 ],
    "weight": [ 1.0, 1.0, 1.5, 2.0, 1.0, 0.5 ]
  },
  "max_recursion": 9,
  "data_folder": "<path/to/your/data/folder>",
  "camera": {
    "azimuth": 0,
    "elevation": 0,
    "rotation": 0,
    "fov": 90,
    "lens": "dual_fisheye_equiarea"
  },
  "render": {
    "width": 2048,
    "height": 2048,
    "visible_semi_sphere": "upper",
    "ray_color": "real",
    "background_color": [ 0, 0, 0 ],
    "intensity_factor": 5,
    "offset": [ 0, 0 ],
    "show_horizontal": false
  },
  "multi_scatter": [
    {
      "crystal": [ 11, 2 ],
      "population": [ 100, 100 ],
      "probability": 1.0,
      "ray_path_filter": [ 0, 0 ]
    }
  ],
  "ray_path_filter": [
    {
      "id": 0,
      "type": "none"
    },
    {
      "id": 1,
      "type": "specific",
      "path": [ 3, 5 ],
      "symmetry": "PBD",
      "complementary": true,
      "remove_homodromous": true
    },
    {
      "id": 2,
      "type": "general",
      "entry": 3,
      "exit": 8,
      "hit": [ 2, 3, 4 ],
      "symmetry": "PBD"
    },
    {
      "id": 3,
      "type": "specific",
      "path": [
        [ 3, 6 ],
        [ 3, 5 ],
        [ 1, 3 ]
      ],
      "symmetry": "P"
    },
    {
      "id": 4,
      "type": "specific",
      "path": [ 1 ],
      "symmetry": "PBD"
    }
  ],
  "crystal": [
    {
      "id": 1,
      "type": "HexPrism",
      "parameter": 1.4,
      "zenith": {
        "mean": 90,
        "std": 0.3,
        "type": "gauss"
      },
      "roll": {
        "mean": 0,
        "std": 0,
        "type": "uniform"
      }
    },
    {
      "id": 2,
      "type": "HexPrism",
      "parameter": 5,
      "zenith": {
        "mean": 0,
        "std": 0,
        "type": "uniform"
      },
      "roll": {
        "mean": 0,
        "std": 0,
        "type": "uniform"
      }
    },
    {
      "id": 3,
      "type": "IrregularHexPyramid",
      "parameter": [ 1, 1.4, 1, 1.4, 1, 1.4, 1, 1, 1, 1, 0.2, 1.4, 0.2 ],
      "zenith": {
        "mean": 90,
        "std": 0.8,
        "type": "gauss"
      },
      "roll": {
        "mean": 0,
        "std": 0,
        "type": "uniform"
      }
    },
    {
      "id": 5,
      "type": "HexPrism",
      "parameter": 1.5,
      "zenith": {
        "mean": 90,
        "std": 0.5,
        "type": "gauss"
      },
      "roll": {
        "mean": 90,
        "std": 0.5,
        "type": "gauss"
      }
    },
    {
      "id": 10,
      "type": "HexPyramid",
      "parameter": [ 0.3, 0.0, 0.3 ],
      "zenith": {
        "mean": 90,
        "std": 0.5,
        "type": "gauss"
      },
      "roll": {
        "mean": 90,
        "std": 0.5,
        "type": "uniform"
      }
    },
    {
      "id": 11,
      "type": "HexPrism",
      "parameter": 0.3,
      "zenith": {
        "mean": 0,
        "std": 0.5,
        "type": "gauss"
      },
      "roll": {
        "mean": 0,
        "std": 0,
        "type": "uniform"
      }
    }
  ]
}