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printing from VRML frame

Posted on 1998-04-07
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Last Modified: 2013-12-25
I have a kiosk application based around a VRML model (running cosmoplayer2 in win95) - this means that
the user does not have access to the print command under the file menu.

Is it possible to set up some sort of HTML/Javascript/Java/Vrml
functionality that allows me to print the VRML frame without accessing
the menu bar??

Preferably, I would like to be able to print from a defined button in
the HUD, but any suggestions would be considered.
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Question by:garyennis
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Expert Comment

by:julio011597
ID: 1858204
Do you mean, clicking - say - an Anchor inside the world to print... what? the html page, or the VRML itself?
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Author Comment

by:garyennis
ID: 1858205
Yes - I mean clicking on part of the world itself, in order to print the VRML frame.
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Author Comment

by:garyennis
ID: 1858206
Yes - I mean clicking on part of the world itself, in order to print the VRML frame.
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Expert Comment

by:julio011597
ID: 1858207
Ok, if you can find the javascript code to print, i can tell you how to use it from the VRML world.
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Author Comment

by:garyennis
ID: 1858208
Perhaps this -

<a href="dummy" onclick="document.print()">Link</a>
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Accepted Solution

by:
julio011597 earned 300 total points
ID: 1858209
Ok, in the meantime i've found it, too; it is:

window.print();

i.e. print() is a method of the window object.

Also, please note that it has been implemented in NN4.x, that is it won't work on older browsers; but this shouldn't be a problem for a kiosk application, since you can install the needed browser, i guess.

Now the VRML code:

Anchor {
  ...
  url "javascript:void(self.print())"
}

That's all.

BTW, the same functionality attached to other types of  events - e.g. to Sensors - is quite more tricky, since needs EAI.

-julio

P.S. please, a dumb request: would you mind explaining what HUD stands for? TIA.
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Author Comment

by:garyennis
ID: 1858210
Cheers Julio....

Havnt tried it out yet - need to install NN4 but sure it'll work fine.

HUD means Head Up Display (meaning geometry that stays in the viewport at all times - like what a pilot sees through his visor!).

Cheers!!
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Author Comment

by:garyennis
ID: 1858211
Forgot to ask - any workaround for Netscape Navigator 3???
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Expert Comment

by:julio011597
ID: 1858212
No, i'm afraid there's no workaround; in fact, that scheme (calling Javascript from an Anchor) workes on any browser supporting Javascript, but it is the print() method itself that has been implemented in NN4; no ways to print in previous versions.

BTW, thanks for your explanation :)

Bye, julio
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Expert Comment

by:julio011597
ID: 1858213
Huh, forgot to tell; to get rid of the browser version problem, you could investigate wether a Java applet is allowed to print; in that case you could still avoid EAI by having your Anchor call a JS function (as i've shown) and that JS function call a Java function to print (LiveConnect is much more simple and reliable than EAI).
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