{
    "geometry":[{
        "type":"rectangle",
        "p1":[-20, -1, 0],
        "p2":[20, -1, 0],
        "p3":[20, -1, -20],
        "p4":[-20, -1, -20],

        
        "ac":[0,1,0],
        "dc":[1,0,0],
        "sc":[1,1,1],
        
        "ka":1,
        "kd":1,
        "ks":1,
    
        "pc":10
    },
        {
            "type":"sphere",
            "centre":[0, 0, -4],
            "radius":1,
            "ac":[1,0,0],
            "dc":[0,0,1],
            "sc":[1,1,1],
            
            "ka":0.2,
            "kd":1,
            "ks":1,
            
            "pc":10
        
        }
    
    ],
    "light":[
        {
        "type":"point",
        "centre":[0, 7, -5],
        "id":[1, 1, 1],
        "is":[1, 1, 1]
    },
        {
            "type":"point",
            "centre":[0,0.5,0],
            "id":[1, 1, 1],
            "is":[1, 1, 1]
        }
    ],
    "output":[{
        "filename":"test_scene3.ppm",
        "size":[500,500],
        "lookat":[0,0,-1],
        "up":[0,1,0],
        "fov":60,
        "centre":[0,0.5,0],
        "ai":[1,1,1],
        "bkc":[1,1,1]
    }
    ]
}