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    <p>Thanks.</p>
    <p><br>
    </p>
    <p>This event list seems to be missing</p>
    <p><br>
    </p>
    <p>const START_INTERACTION_EVENT = { type: 'StartInteractionEvent'
      };<br>
      const INTERACTION_EVENT = { type: 'InteractionEvent' };<br>
      const END_INTERACTION_EVENT = { type: 'EndInteractionEvent' };<br>
    </p>
    <br>
    and so function vtkInteractorObserver::subscribeToEvents() {)<br>
    <br>
    doesn't get them.<br>
    <br>
    I think this is a bug, or am I missing something?<br>
    <br>
    I'm trying to create an interactor observer and I can get the
    interaction events....<br>
    <br>
    <br>
    Thanks<br>
    <br>
    Rick<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 09/13/2018 02:12 PM, Sebastien
      Jourdain wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CABObKxcGG97Pgur+jT5wfcVasRx6mRA8AgCJM8nkRLsbJHAoVA@mail.gmail.com">
      <meta http-equiv="content-type" content="text/html; charset=utf-8">
      <div dir="ltr">
        <div dir="ltr">I think it is named MiddleButton. You can find
          the full list here:
          <div><a
href="https://github.com/Kitware/vtk-js/blob/master/Sources/Rendering/Core/RenderWindowInteractor/index.js#L28-L56"
              moz-do-not-send="true">https://github.com/Kitware/vtk-js/blob/master/Sources/Rendering/Core/RenderWindowInteractor/index.js#L28-L56</a><br>
          </div>
        </div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr">On Thu, Sep 13, 2018 at 11:00 AM Rick Frank <<a
            href="mailto:rickfrank@me.com" moz-do-not-send="true">rickfrank@me.com</a>>
          wrote:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0 0 0
          .8ex;border-left:1px #ccc solid;padding-left:1ex">
          <div text="#000000" bgcolor="#FFFFFF"> For the time being I
            have a subclass of vtkInteractorStyleTrackballCamera which
            is a crib of vtkInteractorStyleSlice for handing slice
            views....<br>
            <br>
            <br>
            I can get:<br>
            <br>
             publicAPI.handleRightButtonPress = (callData) => {<br>
                    const pos = callData.position;<br>
                    model.previousPosition = pos;<br>
                    publicAPI.startDolly();<br>
                };<br>
            <br>
            to override RightButton<br>
            <br>
            but there doesn't seem to be a<br>
            <br>
             publicAPI.handleCenterButtonPress = (callData) => {<br>
                 ....<br>
                };<br>
            <br>
            <br>
            ....<br>
            <br>
            Am I missing something on how to get the center button? I
            can get the wheel....<br>
            <br>
            <br>
            Thanks<br>
            <br>
            Rick<br>
            <br>
            <br>
            <div class="m_-7190038227117689756moz-cite-prefix">On
              09/13/2018 01:21 PM, Sebastien Jourdain wrote:<br>
            </div>
            <blockquote type="cite">
              <div dir="ltr">The manipulator infrastructure come from
                ParaView and has never been pushed to VTK on the c++
                side.
                <div>Anyhow, we have a ManipulatorStyle on which we
                  register a bunch of manipulators to custom build our
                  style binding (pan on left-button, rotate on
                  left-button+Alt, ...). </div>
                <div>That's the high level concept.</div>
                <div><br>
                </div>
                <div>So either you provide a XXXXStyle that should
                  handle everything or use a ManipulatorStyle on which
                  you register manipulators...</div>
                <div><br>
                </div>
                <div><br>
                </div>
              </div>
              <br>
              <div class="gmail_quote">
                <div dir="ltr">On Thu, Sep 13, 2018 at 10:02 AM Rick
                  Frank via vtkusers <<a
                    href="mailto:vtkusers@public.kitware.com"
                    target="_blank" moz-do-not-send="true">vtkusers@public.kitware.com</a>>
                  wrote:<br>
                </div>
                <blockquote class="gmail_quote" style="margin:0 0 0
                  .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
                  <br>
                  I'm using vtkInteractorStyleImage and notice that I
                  don't have access to <br>
                  a center mouse down (for Pan)...<br>
                  <br>
                  <br>
                  but the Manipulators have center mouse down...<br>
                  <br>
                  <br>
                  Manipulators seems to be a new thing in the vtk.js<br>
                  <br>
                  <br>
                  How do they relate to the interactors? Is there a way
                  to get a center <br>
                  mouse down in my interactorStyleImage subclass<br>
                  <br>
                  <br>
                  Rick<br>
                  <br>
                  <br>
                  <br>
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                </blockquote>
              </div>
            </blockquote>
            <br>
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