I use the following. It "feels" pretty reasonable.
double scale = view.getScreenScale();
scale *= 1+(-ychange * zoomMultiplier);
//constant proportion scale
view.setScreenScale(scale);
where zoomMultiplier is nominally .01
I am using parallel projection here.
Jack
-----Original Message-----
From: Nitin.Jain [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, October 09, 2002 11:56 AM
To: [EMAIL PROTECTED]
Subject: [JAVA3D] Linear scaling for zoom
Hi,
I'm using the View.setScreenScale(scale) method for generating the
zooming
effect in my application. I'm not able to figure out a way to produce a
constant zooming effect. How to convert a linear mouse drag values into
the
"scale" parameter, which is a multiplication factor. The zooming-in and
zooming-out effect do not get performed at the same speed.
Thanks in advance,
Nitin
========================================================================
===
To unsubscribe, send email to [EMAIL PROTECTED] and include in the
body
of the message "signoff JAVA3D-INTEREST". For general help, send email
to
[EMAIL PROTECTED] and include in the body of the message "help".
==========================================================================To
unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff JAVA3D-INTEREST". For general help, send email to
[EMAIL PROTECTED] and include in the body of the message "help".
