Figure 13.14 A nonsolid vaulted ceiling piece.
13fig14.wrl	Click on the image to view the VRML scene.

#VRML V2.0 utf8
# The VRML 2.0 Sourcebook
# Copyright (c) 1997
# Andrea L. Ames, David R. Nadeau, and John L. Moreland
Shape {
    appearance Appearance {
        material Material { }
    }
    geometry IndexedFaceSet {
        coord Coordinate {
            point [
            # Circular arc
                -1.0  0.0   1.0,   -1.0  0.26  0.97,
                -1.0  0.5   0.87,  -1.0  0.71  0.71,
                -1.0  0.87  0.5,   -1.0  0.97  0.26,
                -1.0  1.0   0.0,   -1.0  0.97 -0.26,
                -1.0  0.87 -0.5,   -1.0  0.71 -0.71,
                -1.0  0.5  -0.87,  -1.0  0.26 -0.97,
                -1.0  0.0  -1.0,
            # Angled circular arc
                -1.0  0.0   1.0,   -0.97 0.26  0.97,
                -0.87 0.5   0.87,  -0.71 0.71  0.71,
                -0.5  0.87  0.5,   -0.26 0.96  0.26,
                 0.0  1.0   0.0,   -0.26 0.96 -0.26,
                -0.5  0.87 -0.5,   -0.71 0.71 -0.71,
                -0.87 0.5  -0.87,  -0.97 0.26 -0.97,
                -1.0  0.0  -1.0,
            ]
        }
        coordIndex [
             0, 13, 14,  1, -1,    1, 14, 15,  2, -1,
             2, 15, 16,  3, -1,    3, 16, 17,  4, -1,
             4, 17, 18,  5, -1,    5, 18, 19,  6, -1,
             6, 19, 20,  7, -1,    7, 20, 21,  8, -1,
             8, 21, 22,  9, -1,    9, 22, 23, 10, -1,
            10, 23, 24, 11, -1,   11, 24, 25, 12, -1,
        ]
        solid FALSE
    }
}