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    Javascript timer

    How To... ?
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    • m_theater
      m_theater last edited by

      @mark

      while trying some code, and wondering why it is not working. I asked myself if the javascript module timer.jsm is implemented in isadora, basically the 
      setInterval + setTimeout functions. If not is there any option to do timings in javascript without an external timer ?
      thanks in advance
      clemens

      avk4.net

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      • DusX
        DusX Tech Staff last edited by

        @m_theater

        They are not implemented.. as I think they are not core JS, but rather bundled to the DOM extensions (the window object to be exact)
        In anycase, the Javascript only executes when an input is received.
        You can however, link a pulse (at eg 60hz) to an input, and the JS will run with every pulse... the trigger doesn't need to be used in the JS code at all.
        Then you can use the getTime() function to get the elapsed time in milliseconds, and test for your interval.
        http://www.w3schools.com/jsref/jsref_gettime.asp
        Note: that I just tested this method and although the time is correct within JS, I am unable to output the time value reliably.(might have something to do with the numbers size, I am submitting a report)
        It should work as expected internally though.

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        • m_theater
          m_theater last edited by

          @DusX

          hi ryan, thanks for your reply. Using the external input is for now my way to go, i haven't found a resource friendly way to build a timer in javascript with gettime … .Perhaps you could share your testpatch. Anyway it could be a nice feature to implement the isadora beat to the js engine (like getIsadoraFrameBeat | getIsadoraGeneralServiceBeat | getIsadoraHz() ).
          greetings clemens

          avk4.net

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          • DusX
            DusX Tech Staff last edited by

            Good thoughts.. we are actively looking at ways to extend the JS features.

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            • m_theater
              m_theater last edited by

              @Dusx

              concerning extending the js features, do you think it is possible to implement a partial return. 
              con:
              programming / hunting bugs can become tricky
              it is not implemented in google js
              pro:
              you connect the outs of a js actor to a movie player and only update one value // position, speed … (attached is a screenshot) // the programming could be kind of 
              return[2]  arguments[0];
              when i understood it right, for now you have to use:
              one actor per output to split a json object or 
              all values you want to use have to be updated in the script, so you need to feed in the position of the movie player and all other relevant inputs, while securing the script that it only executes when you change a variable and not by e.G. the position value from the movie player

              74c7c1-example_js-connection.png

              avk4.net

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              • DusX
                DusX Tech Staff last edited by

                Sorry, I don't think I follow.

                If a value is output but hasn't changed, it shouldn't have any effect.

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                • m_theater
                  m_theater last edited by

                  @DusX,

                  hi Ryan, attached is a file which hopefully describes what i mean. It isn't a problem or anything like that. I am trying to figure out how i could use the java script actor and what are the possibilities to combine traditional with scripted with user actors. Concerning the partial return, it could be a shortcut for some circumstances.

                  f08ea4-js_example_return_an_array.izz

                  avk4.net

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