Rating prototype

This prototype can be used to display ratings based on stars (by default 5 stars).
It displays an overlay image 'ratingOver.png' partially (depending on the rate) over another image 'rating.png'.
On the following screenshot, the rate is equal to 0.4 (= 2/5), so 2 yellow stars of the 'ratingOver.png' image are visible.

PROTO Rating [
  eventIn SFFloat rate
  field SFTime cycleInterval 1
]

Event In

SFFloat rate - Set the rate (between 0 and 1). For 0, only the 'rating.png' image is visible.

Field

SFTime cycleInterval - The animation duration triggered when rate is changed.

No associated CSS

EXTERNPROTO SizeNotifier [] "SizeNotifier.wrl"
EXTERNPROTO Rating [] "Rating.wrl"

Group {
  children [
    
    DEF SIZE_NOTIFIER SizeNotifier {}
    
    Shape {
      appearance  Appearance {
        material Material2D { emissiveColor 0.8 0.8 0.8 }
      }
      geometry DEF BACKGROUND Rectangle {
        size 0 0
      }
    }
    
    DEF TIMER TimeSensor {
      loop TRUE
      cycleInterval 2
      isActive TRUE
    }
    
    DEF RATING Rating {
      rate 0
  	}
    
    DEF SCRIPT Script {
      eventIn SFTime increaseRate
      field SFNode rating USE RATING
      url "
        function increaseRate() {
          if (rating.rate >= 1) {
            rating.rate = 0;
          } else {
            rating.rate += 0.2;
          }
        }
      "
    }
    
    ROUTE TIMER.cycleTime TO SCRIPT.increaseRate
    
    ROUTE SIZE_NOTIFIER.screenSize TO BACKGROUND.size
    
  ]
}