comp.lang.idl-pvwave archive: archive » Isurface, inverting the axis without changing default lighting direction

Home » Public Forums » archive » Isurface, inverting the axis without changing default lighting direction

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Isurface, inverting the axis without changing default lighting direction [message #70787 is a reply to message #70727]

Wed, 05 May 2010 12:38

penteado
Messages: 866
Registered: February 2018

Senior Member
Administrator

On May 5, 3:24 pm, "Kenneth P. Bowman" <k-bow...@null.edu> wrote:
> In article
> < f460e955-39e9-40d4-be31-0beb89b53...@u20g2000pru.googlegroup s.com >,
> cameron bowles <cameronbowle...@gmail.com> wrote:
>
>> For anyone reading this, I ended up just defininn my "lights_id"
>> idebntifier to be that of Light_1 using this line of code in place of
>> the code in my second post;
>
>> lights_id = itool_obj -> FindIdentifiers('*LIGHT_1', /VISUALIZATIONS)
>
>> it now works a treat and looks good to boot.
>
>> Thanks again Ken and PP.
>
> I just want to make clear that this does not mean that I
> actually understand anything about how the iTools work. ;-)

Yes, they are a bit complicated. As far as I know (somebody please
correct this if I am wrong), the only book on it is the iTool
Developer's Guide, in IDL's help system.

In this particular case, the difference between the object with id
(...)/LIGHTS and the other two (with (...)/LIGHTS/LIGHT and (...)/
LIGHTS/LIGHT_1) is that (...)/LIGHTS is an _IDLITVISUALIZATION, which
is there as a container for the lights, to keep all the objects in a
hierarchy. The ambient and directional lights are IDLITVISLIGHT
objects, which are the actual lights. If you ask one of these two for
their parent, you get the object with the (...)/LIGHTS id:

IDL> light_1=ot->getbyidentifier('/TOOLS/SURFACE TOOL/WINDOW/VIEW_1/
VISUALIZATION LAYER/LIGHTS/LIGHT_1')
IDL> lights=ot->getbyidentifier('/TOOLS/SURFACE TOOL/WINDOW/VIEW_1/
VISUALIZATION LAYER/LIGHTS')
IDL> light_1->getproperty,parent=par & print, par eq lights
1
IDL> print,lights->findidentifiers()
/TOOLS/SURFACE TOOL/WINDOW/VIEW_1/VISUALIZATION LAYER/LIGHTS/LIGHT
/TOOLS/SURFACE TOOL/WINDOW/VIEW_1/VISUALIZATION LAYER/LIGHTS/LIGHT_1
IDL> help,lights
LIGHTS OBJREF = <ObjHeapVar18919(_IDLITVISUALIZATION)>
IDL> help,light_1
LIGHT_1 OBJREF = <ObjHeapVar19107(IDLITVISLIGHT)>

Report message to a moderator

[Message index]

		Isurface, inverting the axis without changing default lighting direction By: cameron bowles on Mon, 03 May 2010 18:16
		Re: Isurface, inverting the axis without changing default lighting direction By: penteado on Wed, 05 May 2010 12:38
		Re: Isurface, inverting the axis without changing default lighting direction By: cameron bowles on Wed, 05 May 2010 00:27
		Re: Isurface, inverting the axis without changing default lighting direction By: penteado on Tue, 04 May 2010 18:49

Previous Topic:	Re: Isurface, inverting the axis without changing default lighting direction
Next Topic:	Re: Help needed in remapping data using IDL

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Oct 10 03:30:42 PDT 2025

Total time taken to generate the page: 1.51947 seconds