[scilab-Users] 3D display view: Spherical coordinates [alpha,theta] + lighting

[Stéphane Mottelet]

  Le 26/11/10 13:49, Antoine Monmayrant a écrit :
> Le 26/11/2010 13:35, Stephane Mottelet a écrit :
>> Sam Mathew <sam at cctech.co.in> a écrit :
>>
>>> Thanks Stéphane,
>>>
>>> I tried to install the library online on 5.3 beta 4,
>>> but it doesn't work.
>>
>> the installation process or the plotlib itself ? Be sure to install 
>> the lastest version (0.42).
>>
>>> But on the 5.2.2 version it did work. Is there any problem with 5.3 
>>> beta 4
>>> for installing atoms modules?
>>>
>>> Besides, as I am not yet very conversant with SCILAB, I don't know 
>>> how to
>>> access help for the new toolboxes after installation!
>>>
>>> I would like to colour my surfaces with variable colours depending 
>>> on the
>>> value they represent.
> Last time I tried plotlib, I didn't success in getting both color as a 
> function of data and shadow/lighting.
Not my fault : ask the Scilab team to implement a TrueColor visual !

S.


>>> I guess the help/demo/examples for plotlib would help
>>> much. How can one access it?
>>
>> in the demo menu. If you want to copy/paste demos code, type (once 
>> for all
>> at the beginning of scilab session)
>>
>> --> plotlibmode
>>
>> or put it in your .scilab
>>
>> S.
>>
>>>
>>> Regards,
>>>
>>> Sam
>>>
>>>
>>> 2010/11/26 Stéphane Mottelet <stephane.mottelet at utc.fr>
>>>
>>>>  Hi,
>>>>
>>>> the plotlib module (available thru the Atoms module manager) allows
>>>> to plot a surface with lighting (surfl and trisurfl functions). You 
>>>> can
>>>> choose
>>>> the direction of the light source, so this should solve your problem.
>>>>
>>>> Concerning your problem with view angles, the problem is that even 
>>>> if you
>>>> force the view angles to be the same, you should also force the 
>>>> axis limits
>>>> to have an equivalent view.
>>>>
>>>>
>>>> S.
>>>>
>>>
>>>
>>>
>>> -- 
>>>
>>> Asst. Manager, CFD
>>> Centre for Computational Technologies
>>> www.cctech.co.in
>>> Phone: +91 20 2552 1873
>>>
>>
>>
>>
>
>