An eggs base surfaces.

[OBJECT MATRICES
    [OBJECT VIEW_MAT
	[MATRIX
	    -0.287829950 -0.082015406  0.157078349  0.000000000 
	     0.174506528 -0.079140787  0.278442853  0.000000000 
	    -0.030784614  0.318207939  0.109736563  0.000000000 
	     0.146651800  0.065067624 -0.653281802  1.000000000 
	]
    ]
]

[OBJECT [texture "curvature, 30"] [color 14] EGG_BASE
    [SURFACE BEZIER 4 4 E3
	[0 0  0]
	[1 0  0]
	[2 0  0]
	[3 0  0]

	[0 1  0]
	[1 1 -8]
	[2 1  8]
	[3 1  0]

	[0 2  0]
	[1 2  8]
	[2 2 -8]
	[3 2  0]

	[0 3  0]
	[1 3  0]
	[2 3  0]
	[3 3  0]
    ]
]