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

[Stéphane Mottelet]

Le 26/11/2010 14:58, Antoine Monmayrant a écrit :
> Le 26/11/2010 14:10, Stéphane Mottelet a écrit :
>>  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.
>>
> No intention to offence you.
> Your module is nice, it was just a remark...
no dammage. It's just a pity that the underlying layer *is* TrueColor 
and that
the user does not have access to it.

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
>>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>
>
>