Figure 25.12 Two dungeon rooms controlled by LOD noes and separated by a wall and a pair of sliding doors.
25fig12.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
Group {
    children [
    # First room
        LOD {
            range [ 20.0 ]
            level [
                Inline { url "droom.wrl" },
                Group { }
            ]
        },
    # Second room
        Transform {
            translation 0.0 0.0 -10.0
            children LOD {
                range [ 20.0 ]
                level [
                    Inline { url "droom.wrl" },
                    Group { }
                ]
            }
        },
    # Wall between first and second rooms
        Transform {
            translation 0.0 0.0 -5.0
            children Inline { url "dwall2.wrl" }
        },
    # Left and right door panels
        Transform {
            translation 0.0 0.0 -4.95
            children [
                DEF LeftDoor Transform {
                    children Transform {
                        translation -0.75 0.0 0.0
                        children DEF Door Inline { url "ddoor.wrl" }
                    }
                },
                DEF RightDoor Transform {
                    children Transform {
                        translation 0.75 0.0 0.0
                        children USE Door
                    }
                },
                DEF TouchDoor TouchSensor { }
            ]
        },
    # Animation clock
        DEF Clock TimeSensor {
            cycleInterval 5.0
        },
    # Animation paths for the left and right doors
        DEF LeftOpen PositionInterpolator {
            key [ 0.0, 0.1, 0.9, 1.0 ]
            keyValue [
                 0.0 0.0 0.0, -1.3 0.0 0.0,
                -1.3 0.0 0.0,  0.0 0.0 0.0
            ]
        },
        DEF RightOpen PositionInterpolator {
            key [ 0.0, 0.1, 0.9, 1.0 ]
            keyValue [
                 0.0 0.0 0.0,  1.3 0.0 0.0,
                 1.3 0.0 0.0,  0.0 0.0 0.0
            ]
        }
    ]
}
ROUTE TouchDoor.touchTime     TO Clock.set_startTime
ROUTE Clock.fraction_changed  TO LeftOpen.set_fraction
ROUTE Clock.fraction_changed  TO RightOpen.set_fraction
ROUTE LeftOpen.value_changed  TO LeftDoor.set_translation
ROUTE RightOpen.value_changed TO RightDoor.set_translation