Expressions

Time

Operation

Python

OSL

Get current time

context.getTime()

time

Get current frame

context.getFrame()

context( "frame" )

Get frame rate

context.getFramesPerSecond()

context( "framesPerSecond" )

Plugs

Operation

Python

OSL

Get value

value = parent["NodeName"]["plugName"]

value = parent.NodeName.plugName

Set value

parent["NodeName"]["plugName"] = value

parent.NodeName.plugName = value

Context Variables

Operation

Python

OSL

Get variable

context["variableName"]

context( "variableName" )

Get with default

context.get( "variableName", default )

context( "variableName", default )

Get array element

context["variableName"][index]

contextElement( "variableName", index )

Get array element with default

a = context.get( "variableName", [] )
a[index] if len( a ) > index else default

contextElement( "variableName", index, default )

Get array element from end

context["variableName"][-index]

contextElement( "variableName", -index )