{
    "directional_light": {
	"direction": [1.0, 1.0, 1.0],
	"diffuse": [0.0, 1.0, 1.0]
    },

    "directional_light": {
	"direction": [-1.0, 1.0, 1.0],
	"diffuse": [1.0, 1.0, 0.0]
    },

    "directional_light": {
	"direction": [0.0, 1.0, -1.0],
	"diffuse": [1.0, 0.0, 1.0]
    },

    "disk": {
	"position": [-0.0, -0.0, -0.5],
	"normal": [0.0, 0.0, 0.1],
	"radius": 0.25,
	"material": {
	    "diffuse": [1.0, 0.0, 0.0],
	    "rho": 0.3,
	    "transmissive": true,
	    "ref_index": 1.33
	}
    },

    "plane": {
	"point": [0.0, -1.5, 0.0],
	"normal": [0.0, 1.0, 0.0],
	"material": {
	    "diffuse": [1.0, 0.5, 0.4]
	}
    },

    "sphere": {
	"position": [1.0, 1.0, -2.0],
	"radius": 0.5,
	"material": {
	    "diffuse": [1.0, 0.0, 0.0]
	}
    },

    "sphere": {
	"position": [-1.0, 1.0, -2.0],
	"radius": 0.5,
	"material": {
	    "diffuse": [0.0, 1.0, 0.0]
	}
    },

    "sphere": {
	"position": [1.0, -1.0, -2.0],
	"radius": 0.5,
	"material": {
	    "diffuse": [0.0, 0.0, 1.0]
	}
    },
    
    "sphere": {
	"position": [-1.0, -1.0, -2.0],
	"radius": 0.5,
	"material": {
	    "diffuse": [1.0, 0.0, 1.0]
	}
    },

    "sphere": {
	"position": [0.0, 0.0, -2.0],
	"radius": 1.0,
	"material": {
	    "diffuse": [1.0, 1.0, 0.0]
	}
    },

    "sphere": {
	"position": [-1.5, 0.0, -2.0],
	"radius": 0.5,
	"material": {
	    "diffuse": [1.0, 1.0, 1.0],
	    "rho": 0.3
	}
    },

    "sphere": {
	"position": [1.5, 0.0, -2.0],
	"radius": 0.5,
	"material": {
	    "diffuse": [1.0, 1.0, 1.0],
	    "rho": 0.08,
	    "transmissive": true,
	    "ref_index": 1.1
	}
    },

    "sphere": {
	"position": [0.0, 1.5, -2.0],
	"radius": 0.5,
	"material": {
	    "diffuse": [1.0, 1.0, 1.0],
	    "rho": 0.5
	}
    },

    "sphere": {
	"position": [0.0, 0.0, -1.0],
	"radius": 0.25,
	"material": {
	    "diffuse": [1.0, 1.0, 1.0],
	    "rho": 0.1
	}
    },

    "environment": {
	"color": [0.7, 0.4, 0.05]
    },

    "camera": {
	"eye": [0.0, 0.0, 1.0],
	"look": [0.0, 0.0, -1.0],
	"up": [0.0, 1.0, 0.0]
    }
}