package edu.colorado.phet.movingman.ladybug class VectorVisibilityModel extends ObservableS { var velVis = true var accelVis = true def isVelocityVisible() = velVis def velocityVectorVisible: Boolean = velVis def accelerationVectorVisible: Boolean = accelVis def velocityVectorVisible_=(x: Boolean) = { velVis = x notifyListeners } def accelerationVectorVisible_=(x: Boolean) = { accelVis = x notifyListeners } def resetAll() = { velocityVectorVisible = true accelerationVectorVisible = true } }