You can just check from within your callbacks. The checkboxes can stay the
same. You have a number of ways to do that.
1) Check if mental ray is the current renderer
def enablePRE(*args):
if not cmds.getAttr('defaultRenderGlobals.ren') == 'mentalRay':
return
2) Check if mental ray plugin is loaded
if not cmds.pluginInfo('Mayatomr', q=True, loaded=True):
return
# This could still fail if they have never opened the render settings
yet
3) Just try and catch the exception
try:
cmds.getAttr('miDefaultFramebuffer.premultiply')
except ValueError:
pass
On Wed, Aug 1, 2012 at 5:48 AM, Daz <[email protected]> wrote:
> Heya
>
> Thanks for answer and help ! I thought I failed to post this topic as it
> did not appear for a while...
>
> Anyway I postponed for now text fields because I'm too weak in maya UI and
> started from something simpler... well not so simpler as I hit a wall
> already...
>
> In any case here is the core of script that works just fine:
>
> import maya.cmds as cmds
>
> Cbox = cmds.getAttr('miDefaultFramebuffer.premultiply')
> def enablePRE(*args):
> cmds.editRenderLayerAdjustment('miDefaultFramebuffer.premultiply')
> cmds.setAttr ('miDefaultFramebuffer.premultiply',1)
> def disPRE(*args):
> cmds.editRenderLayerAdjustment('miDefaultFramebuffer.premultiply')
> cmds.setAttr ('miDefaultFramebuffer.premultiply',0)
> cmds.window()
>
>
> cmds.showWindow()
> mainLayout = cmds.columnLayout(w=300, h=100)
>
> w= 75
> h= 20
>
> cmds.text('Basic Render Settings',fn='boldLabelFont')
> cmds.separator(h=5)
>
> cmds.gridLayout( numberOfColumns=4, cellWidthHeight=(w, h))
>
> cmds.checkBox(label='Premultiply', onc=enablePRE,ofc=disPRE,value = Cbox)
> cmds.checkBox(label='Disp', onc=enableDIS,ofc=disDIS,value = Dbox)
> cmds.checkBox(label='Exp Texture', onc=enableTEX,ofc=disTEX,value = Tbox)
> cmds.checkBox(label='Post Effect', onc=enablePOS,ofc=disPOS,value = Pbox)
>
> cmds.setParent('..')
> cmds.separator(h=5)
>
>
> Now this is just a part of bigger standalone UI that works just fine when
> Mental Ray is open.
>
> The problem starts if Mental Ray is not in use and script try to Cbox =
> cmds.getAttr('miDefaultFramebuffer.premultiply')
> Then he give me an error he cant find module or something like that.. no
> wonders its not loaded.
>
> I fixed it by using 'if' module and then asking if MR is loaded.
>
> if cmds.setAttr('defaultRenderGlobals.ren', 'mentalRay', type='string'):
> Cbox = cmds.getAttr('miDefaultFramebuffer.premultiply')
> def enablePRE(*args):
> cmds.editRenderLayerAdjustment('miDefaultFramebuffer.premultiply')
> cmds.setAttr ('miDefaultFramebuffer.premultiply',1)
> def disPRE(*args):
> cmds.editRenderLayerAdjustment('miDefaultFramebuffer.premultiply')
> cmds.setAttr ('miDefaultFramebuffer.premultiply',0)
>
> (now that I look at it I'm not sure if that worked either...)
>
> Now this works but it stops again when it try to create checkbox (xxxx,
> value=Cbox) - at this point he crash because there is no Cbox defined
> because command never run because MR was not loaded.
>
> How can I 'if' that command again so that it will create checkbox but not
> run strings inside it... ? :s
>
> Thanks, bye.
>
>
>
>
>
>
>
>
> Ast o text field I'm trying to get value from Min/Max/Refl/Refl samples in
> MR and then type them in text field as default and then be able to just
> change it there and click enter + creating override if its on render layer
> sooo ignore that question for now I gotta do more python study to grasp the
> idea how to do it 1st, posting here and annoying you pros wont get me
> learning anything...
>
>
> Thanks !
>
>
> On Wednesday, 1 August 2012 00:01:14 UTC+1, Justin Israel wrote:
>
>> cmds.textField( name, edit=True, enterCommand=('x'))
>>
>>
>> enterCommand requires a callable function, similar to how you are doing
>> it already with your button. Right now you are effectively just setting the
>> enterCommand to the string value 'x' which it will then try to run a
>> callable called x(). I see you have some global values set. Where do you
>> ultimately want to derive your x value from? A gui widget?
>>
>>
>>
>> On Mon, Jul 23, 2012 at 2:20 AM, Daz wrote:
>>
>>> Hello
>>>
>>> I have a bit of a problem with python atm. Not sure if I'm missing 1
>>> value or everything is wrong but I cant get it to work...
>>>
>>> I want to create a simple memu to be able control render settings and
>>> other values using my UI... here is what I got so far...
>>>
>>>
>>>
>>> import maya.cmds as cmds
>>>
>>> x=4
>>> y=0
>>> d=0
>>> f=0
>>>
>>>
>>> if cmds.window('DazTools', exists=True):
>>> cmds.deleteUI('DazTools', window=True)
>>>
>>> cmds.window ('DazTools', h=50, w=100)
>>> cmds.showWindow('DazTools')
>>>
>>> cmds.rowColumnLayout( numberOfColumns=2, columnAttach=(1, 'right', 0),
>>> columnWidth=[(1, 100), (2, 250)] )
>>>
>>> def st(*args):
>>> cmds.setAttr('miDefaultOptions.maxSamples', x)
>>>
>>>
>>> cmds.text( label='name' )
>>> name = cmds.textField()
>>> cmds.textField( name, edit=True, enterCommand=('x'))
>>>
>>> cmds.button('Standard', c=st)
>>>
>>>
>>>
>>> I'm not sure how it should be but I thought that I have to create
>>> overall 'x' value for python to be able to call back to the 'x' and know
>>> what to type in my settings. I initially will preset it to how I want using
>>> master 'x' at the top but let user change it as he go deep in to the
>>> settings...
>>>
>>> Any hints what I'm doing wrong here?
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>>
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