KbdSensor
The KbdSensor node generates events based on input from a keyboard.
Click anywhere in the 3D window and press any alphanumeric keys.
Node description
KbdSensor {
exposedField SFBool enabled TRUE
exposedField SFBool isActive FALSE
eventOut SFInt32 keyDown
eventOut SFInt32 keyUp
}
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enabled indicates whether the sensor is currently paying attention to a keyboard input. If enabled receives TRUE and isActive is TRUE, the sensor reacts on input from a keyboard. In this case, the user cannot navigate in the 3D window using keyboard commands.
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isActive allows to control the sensor. If isActive receives a TRUE event, the sensor processes all keyboard input. Otherwise, the input is treated with a browser.
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keyDown and keyUp events generate 32-bit value containing the character code of the key that was pressed or released. The primary two bytes specify the virtual-key code of the nonsystem key, and the secondary - key-state flags.
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Example
NavigationInfo {
type "EXAMINE"
}
Background {
skyColor [1 1 1]
}
DEF KS KbdSensor {
isActive TRUE
}
Shape {
geometry DEF TXT Text {
string ["?"]
fontStyle FontStyle {
justify ["MIDDLE", "MIDDLE"]
family "TYPEWRITER"
style "BOLD"
size 4
}
}
appearance Appearance {
material Material {
diffuseColor 0.02 0.38 0.61
}
}
}
DEF SCR Script {
directOutput TRUE
eventIn SFInt32 go
field SFNode TXT USE TXT
field MFString string [""]
url ["javascript:
function go(val,ts){
string[0]=
String.fromCharCode(val.toString());
TXT.string=string;
}
"]
}
ROUTE KS.keyDown TO SCR.go
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You can see this example in Cortona at top left corner of this page.
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