| Re: IVolume/isosurface [message #49197] |
Fri, 07 July 2006 11:09 |
Kenneth P. Bowman
Messages: 585
Registered: May 2000
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Senior Member |
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In article <Ic-dnWqhn7QrBTPZnZ2dnUVZ_s-dnZ2d@comcast.com>,
Michael Galloy <mgalloy@gmail.com> wrote:
> Karl's suggestion will fix this programmatic example too. You just need
> to insert a
>
> vol_obj->select
>
> after creating an isosurface (and before creating the next isosurface).
> See the code below.
>
> Mike
Ah ha! That was not obvious to me. (But being nearly superannuated*,
it is not surprising that it is not obvious.)
Thanks, Ken
*superannuated - adj., cause to become obsolete through age or new
technological or intellectual developments.
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| Re: IVolume/isosurface [message #49199 is a reply to message #49197] |
Fri, 07 July 2006 10:23  |
Michael Galloy
Messages: 1114
Registered: April 2006
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Senior Member |
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Kenneth P. Bowman wrote:
> In article <12ar2fms945fc42@corp.supernews.com>,
> "Karl Schultz" <k_remove_schultz@ittvis.com> wrote:
>
>>> Can an IVolume display more than one isosurface? If not, why not?
>>>
>> You need to re-select the volume to add another Isosurface.
>
Karl's suggestion will fix this programmatic example too. You just need
to insert a
vol_obj->select
after creating an isosurface (and before creating the next isosurface).
See the code below.
Mike
--
www.michaelgalloy.com
>
> IVOLUME, var, /NO_SAVEPROMPT, OVERPLOT = itool_id
>
> vol_id = itool_obj -> FindIdentifiers('*DATA SPACE/VOLUME*', /VISUALIZATIONS) ;Get volume viz object identifier
> vol_obj = itool_obj -> GetByIdentifier(vol_id) ;Get volume viz object reference
> vol_obj -> SetProperty, RENDER_EXTENTS = 0 ;Turn off walls
> vol_obj -> SetProperty, HIDE = 1 ;Hide volume (for exporting images)
>
> isosurface_op_id = itool_obj -> FindIdentifiers('*ISOSURFACE*', /OPERATIONS) ;Get isosurface operator identifier
> isosurface_op_obj = itool_obj -> GetByIdentifier(isosurface_op_id) ;Get isosurface operator object reference
> isosurface_op_obj -> SetProperty, SHOW_EXECUTION_UI = 0 ;Turn off isosurface operator user interface
> FOR i = 0, N_ELEMENTS(isovalues)-1 DO BEGIN
> isosurface_op_obj -> SetProperty, _ISOVALUE0 = isovalues[i] ;Set isosurface value to pv_value
> rc = itool_obj -> DoAction(isosurface_op_id)
;Make isosurface
vol_obj->select ; need to select volume again here
> ENDFOR
>
> isosurface_id = itool_obj -> FindIdentifiers('*DATA SPACE/ISOSURFACE*', /VISUALIZATIONS) ;Get isosurface object identifier(s)
> PRINT, isosurface_id
> FOR i = 0, N_ELEMENTS(isovalues)-1 DO BEGIN
> isosurface_obj = itool_obj -> GetByIdentifier(isosurface_id[i]) ;Get isosurface object reference
> isosurface_obj -> SetProperty, SOURCE_COLOR = 1, $ ;Set color source to "user"
> FILL_COLOR = isocolor, $ ;Set color
> TRANSPARENCY = 20 ;Set transparency
> itool_obj -> RefreshCurrentWindow ;Refresh window
> iTPropertyReport, itool_obj, isosurface_id[i] ;Print list of isosurface properties
> ENDFOR
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| Re: IVolume/isosurface [message #49205 is a reply to message #49199] |
Thu, 06 July 2006 16:30 |
Kenneth P. Bowman
Messages: 585
Registered: May 2000
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Senior Member |
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In article <12ar2fms945fc42@corp.supernews.com>,
"Karl Schultz" <k_remove_schultz@ittvis.com> wrote:
>> Can an IVolume display more than one isosurface? If not, why not?
>>
>
> You need to re-select the volume to add another Isosurface.
OK, I can do that interactively, but I am trying to do this programmatically, as follows.
Being a novice object graphics user, I expect the code is ugly, but it
works for a single isovalue. However, when isovalues is an array, only one
surface is displayed. Printing isosurface_id shows two isosurfaces, but
the second does not appear in the display.
Confusedly (but what else is new),
Ken
IVOLUME, var, /NO_SAVEPROMPT, OVERPLOT = itool_id
vol_id = itool_obj -> FindIdentifiers('*DATA SPACE/VOLUME*', /VISUALIZATIONS) ;Get volume viz object identifier
vol_obj = itool_obj -> GetByIdentifier(vol_id) ;Get volume viz object reference
vol_obj -> SetProperty, RENDER_EXTENTS = 0 ;Turn off walls
vol_obj -> SetProperty, HIDE = 1 ;Hide volume (for exporting images)
isosurface_op_id = itool_obj -> FindIdentifiers('*ISOSURFACE*', /OPERATIONS) ;Get isosurface operator identifier
isosurface_op_obj = itool_obj -> GetByIdentifier(isosurface_op_id) ;Get isosurface operator object reference
isosurface_op_obj -> SetProperty, SHOW_EXECUTION_UI = 0 ;Turn off isosurface operator user interface
FOR i = 0, N_ELEMENTS(isovalues)-1 DO BEGIN
isosurface_op_obj -> SetProperty, _ISOVALUE0 = isovalues[i] ;Set isosurface value to pv_value
rc = itool_obj -> DoAction(isosurface_op_id) ;Make isosurface
ENDFOR
isosurface_id = itool_obj -> FindIdentifiers('*DATA SPACE/ISOSURFACE*', /VISUALIZATIONS) ;Get isosurface object identifier(s)
PRINT, isosurface_id
FOR i = 0, N_ELEMENTS(isovalues)-1 DO BEGIN
isosurface_obj = itool_obj -> GetByIdentifier(isosurface_id[i]) ;Get isosurface object reference
isosurface_obj -> SetProperty, SOURCE_COLOR = 1, $ ;Set color source to "user"
FILL_COLOR = isocolor, $ ;Set color
TRANSPARENCY = 20 ;Set transparency
itool_obj -> RefreshCurrentWindow ;Refresh window
iTPropertyReport, itool_obj, isosurface_id[i] ;Print list of isosurface properties
ENDFOR
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| Re: IVolume/isosurface [message #49207 is a reply to message #49205] |
Thu, 06 July 2006 15:08 |
Karl Schultz
Messages: 341
Registered: October 1999
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Senior Member |
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On Thu, 06 Jul 2006 14:34:27 -0600, Kenneth P. Bowman wrote:
> Can an IVolume display more than one isosurface? If not, why not?
>
> Thanks, Ken Bowman
Sure it can.
Just do the
Operations->Volume->Isosurface
thing as many times as you like.
What is *probably* confusing you is that the Isosurface is, intentionally,
selected after it is created. In this state, the Volume operations are
disabled in the Operations menu because a volume is not selected.
You need to re-select the volume to add another Isosurface.
Sometimes it is tricky to get the mouse pointer on the volume and not the
surface for some Isosurfaces. If you have trouble selecting the volume,
try bringing up the Visualization browser and use the tree widget to
select the volume.
Karl
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