plot3d module

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2 total messages Started by Elizabeth Kirby Thu, 10 Sep 1992 21:21

#72

Author: Elizabeth Kirby
Date: Thu, 10 Sep 1992 21:21

20 lines
818 bytes

Hi,

	I'm trying to display data using the plot3d module and
am getting no results.   I`ve tried it on the data supplied with
explorer (in the $EXPLORERHOME/data/plot3d directory) as well as 
with my own data.   I'm hooking it into a network which consists
of 

	readplot3d -|      |- generate colormap
                    |      |
	            |      |
		   volume to geom
			|
			|
		     render

	Does anyone know why I'm not getting any picture?

		Thanks,		Beth

Re: plot3d module

#73

Author: Roy Hashimoto
Date: Fri, 11 Sep 1992 16:40

21 lines
1232 bytes

In article <82511@bcsaic.boeing.com> ekirby@buckeye.boeing.com (Elizabeth Kirby) writes:
>	I'm trying to display data using the plot3d module and
>am getting no results.   I`ve tried it on the data supplied with
>explorer (in the $EXPLORERHOME/data/plot3d directory) as well as 
>with my own data.   I'm hooking it into a network which consists
>of 
>
> [ basic VolumeToGeom map deleted ]
>
>	Does anyone know why I'm not getting any picture?

The common reason no picture is shown with VolumeToGeom is that alpha
(opacity) values less than 1 are not provided in the colormap.  There
should really be a single large splat representing the whole volume in
this case.

Play with the alpha mapping in GenerateColormap, and something should
show up for you.

Roy Hashimoto
hashimoto@sgi.com

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