#VRMLV2.0 utf8
##:@* proto-clock
##@ interface
EXTERNPROTO ClockMechanism [
        eventIn  SFInt32    set_hour
        eventIn  SFInt32    set_minute
        eventIn  SFInt32    set_second
        field    SFBool     autoClock
        field    SFInt32    hour
        field    SFInt32    minute
        field    SFInt32    second
        field    SFVec3f    hourHandAxis
        field    SFVec3f    minuteHandAxis
        field    SFVec3f    secondHandAxis
        field    SFBool     twentyFourHours
        eventOut SFInt32    hour_changed
        eventOut SFInt32    minute_changed
        eventOut SFInt32    second_changed
        eventOut SFRotation hourHand_changed
        eventOut SFRotation minuteHand_changed
        eventOut SFRotation secondHand_changed
]
{
   Group {
      children [

              DEF TS TimeSensor { loop TRUE }
         
              DEF SCRIPT Script {
                 eventIn  SFInt32    set_hour   IS set_hour
                 eventIn  SFInt32    set_minute IS set_minute
                 eventIn  SFInt32    set_second IS set_second
                 eventIn  SFTime     set_time
                 field    SFInt32    hr
                 field    SFInt32    min
                 field    SFInt32    sec
                 field    SFVec3f    hrAx
                 field    SFVec3f    minAx
                 field    SFVec3f    secAx
                 field    SFBool     do24
                 field    SFBool     auto
                 field    SFBool     first
                 eventOut SFRotation hourHand_changed   IS hourHand_changed
                 eventOut SFRotation minuteHand_changed IS minuteHand_changed
                 eventOut SFRotation secondHand_changed IS secondHand_changed

                 url["javascript:

               // private:
                    function autoSetTime() {
                       currentDate = new Date(); 
                       hr  = currentDate.getHours();
                       min = currentDate.getMinutes();
                       sec = currentDate.getSeconds();
                    }
                    function time2Rot() {
                       // set some constants
                       PIPI = Math.PI * 2;
                       numHrs = 12;
                       if(do24) { numHrs = 24; }
                       // find radians (what portion of a full circle-- x * 2PI; x: 0 -> 1)
                       secRad = (sec / 60) * PIPI;
                       minRad = (min / 60) * PIPI;
                       hrRad  = (hr / numHrs) * PIPI;
                       // adjust minute and hour hands for smooth interpolation
                       minRad += secRad / 60;
                       hrRad  += minRad / numHrs;
                       // create the new rotations
                       secondHand_changed = new SFRotation(secAx, -secRad);
                       minuteHand_changed = new SFRotation(minAx, -minRad);
                       hourHand_changed   = new SFRotation(hrAx, -hrRad);
                    }
                    function initialize() { if(auto) { autoSetTime(); } }

//@ public:
                    function set_time(tickTock) {
                       if(first || TRUE) {
                               first = FALSE;
                               // get time from computer, if autoClock is on
                               if(auto) { autoSetTime(); }
                               // or keep our own time
                               else {
                                  sec ++;
                                  if(sec > 59) { sec = 0; min++; }
                                  if(min > 59) { min = 0; hr++;  }
                                  if(do24) { if(hr > 23) { hr = 0; } }
                                  else     { if(hr > 11) { hr = 0; } }
                               }
                               time2Rot();
                               hour_changed = hr;
                               minute_changed = min;
                               second_changed = sec;
                       }
                       else { first = TRUE; }
                    }
                    function set_hour(h)   { hr  = h; }
                    function set_minute(m) { min = m; }
                    function set_second(s) { sec = s; }
                    "]
              }
           ]
   }
   ROUTE TS.cycleTime TO SCRIPT.set_time
}


##</>