Re: problems with drawing points in 3d display

• To: bader al-mulla <b_almulla@xxxxxxxxx>
• Subject: Re: problems with drawing points in 3d display
• From: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>
• Date: Thu, 30 Mar 2000 05:17:05 -0600

Hi Bader,

> how can i draw a specific points in any location i
> want in 3d display?
> is there a specific method to draw them by giving the
> (x,y,z) coordinates? if not,how to extend example 2_03
> in the tutorial to draw them in 3d display?

Yes, this wouldn't be too hard.  Modify:

  t_h_tuple = new RealTupleType( time, height);

to:

  RealType third = new RealType("third");
  t_h_tuple = new RealTupleType( time, height, third);

Modify:

  float[][] point_vals = new float[][]{{-3.0f, -1.5f, 0.0f, 1.5f, 3.0f,},
                                       {0.0f, 33.75f, 45.0f, 33.75f, 0.0f,} };

to:

  float[][] point_vals = new float[][]{{-3.0f, -1.5f, 0.0f, 1.5f, 3.0f,},
                                       {0.0f, 33.75f, 45.0f, 33.75f, 0.0f,},
                                       {0.0f, 1.0f, 2.0f, 3.0f, 4.0f,} };

Or put into point_vals whatever array of values you want to
display.

If you want to display more or less than 5 points you'll
need to modify:

  index_set = new Integer1DSet(index, 5);

Then modify:

  display = new DisplayImplJ2D("display1");

to:

  display = new DisplayImplJ3D("display1");

and add:

  ScalarMap thirdMap = new ScalarMap(third, DisplayZAxis);
  display.addMap( thirdMap );

That should do it.

Cheers,
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:
  • problems with drawing points in 3d display
    • From: bader al-mulla