Switch node

Switch {
  SFInt32 whichChoice 0
  MFNode choice NULL
}

This node allows to render only one node in a list of nodes.
This is useful to hide elements.

SFInt32 whichChoice 0 :
The index of the node in choice to be drawn.
Value can be set to -1 so no node will be drawn.
By default, the first node is rendered.

MFNode choice NULL :
The list of nodes. Only one of the nodes can be rendered at a time.

This example shows how display a node by modifying whichChoice field.

DEF mySwitch Switch {
  whichChoice -1      # initialized to display none
  choice [

    # choice 0: display text
    Shape {
      appearance Appearance {material Material2D {emissiveColor 0 0 0 }}
      geometry Text {
        string "Switch Test"
        fontStyle FontStyle {size 8 style "bold" justify ["TOP" "LEFT"]}
      }
    }

    # choice 1: display ImageTexture
     Shape {
      appearance Appearance { texture ImageTexture { url "smile.png" } }
      geometry Bitmap { }
    }

    # choice n
    # ...
  ]
}

Script {
  field SFNode mySwitch USE mySwitch
  url"javascript:
    function displayText(){
      mySwitch.whichChoice = 0;
    }
    function displayImage(){
      mySwitch.whichChoice = 1;
    }
    function displayNothing(){
      mySwitch.whichChoice = -1;
    }
  "
}