Re: mouse layer

• To: Ricardo Mantilla <ricardo@xxxxxxxxxxxxxxxxxx>
• Subject: Re: mouse layer
• From: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>
• Date: Tue, 12 Jun 2001 07:12:40 -0500

Hi Ricardo,

> I am trying to change the aspect of the mouse pointer from a cross to a
> box or an X as I move over a Display.  However I've been unable to
> figure out how this thing work.  I also want to write some things other
> that LAT, LONG on the top left corner when I click the center mouse
> button.  As far as I understand there is like a layer where the mouse
> thing happens but I really don't get it.
> 
> I am not sure if this is a Visad question or a general Java one, but I
> will appreciate any help with this.

You sent to the right list - these are VisAD questions.

The easiest way to change the cursor is to extend
visad/java3d/DefaultDisplayRendererJ3D.java (or
visad/java2d/DefaultDisplayRendererJ2D.java). Copy the source
of DefaultDisplayRendererJ3D.java into your extension and
simply change the contents of the float[] cursor_verts array
to make whatever shape you want.

In order to print different Strings in the upper left corner,
in your extension of DefaultDisplayRendererJ3D.java, override
the implemention of:

  public void setCursorStringVector()

(which is in visad/DisplayRenderer.java) to create a Vector
of Strings you do want, and then call:

  public void setCursorStringVector(Vector vect)

to actually set the Strings on the screen.

Good luck,
Bill
----------------------------------------------------------
Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI  53706
hibbard@xxxxxxxxxxxxxxxxx  608-263-4427  fax: 608-263-6738
http://www.ssec.wisc.edu/~billh/vis.html

• References:
  • mouse layer
    • From: Ricardo Mantilla