Execute vray physical cam with mel/python

[MjTheHunter]

I wanted to ask if there is a solution for adding the vray physical cam attributes to a camera.
for now I can make it work if I execute the script in two parts:

Part1
cmds.camera()
camlist = cmds.ls(sl=True)
cmds.rename(camlist[0], 'vrayPhysicalCamera')
mel.eval('vray addAttributesFromGroup |vrayPhysicalCamera|vrayPhysicalCameraShape vray_cameraPhysical 1;')

part2
mel.eval('setAttr "vrayPhysicalCameraShape.vrayCameraPhysicalOn" 1;')


However, executing everything at once produces an error:
// Error: line 1: setAttr: No object matches name: vrayPhysicalCameraShape.vrayCameraPhysicalOn //
# Error: RuntimeError: file line 6: Error occurred during execution of MEL script
line 1: setAttr: No object matches name: vrayPhysicalCameraShape.vrayCameraPhysicalOn #

This happens regardless of using mel or python.
Is there a native python or mel command for this action, without having to execute as a two part script?


Thank you.

[bigbossfr]

I wanted to ask if there is a solution for adding the vray physical cam attributes to a camera.
for now I can make it work if I execute the script in two parts:

Part1
cmds.camera()
camlist = cmds.ls(sl=True)
cmds.rename(camlist[0], 'vrayPhysicalCamera')
mel.eval('vray addAttributesFromGroup |vrayPhysicalCamera|vrayPhysicalCameraShape vray_cameraPhysical 1;')

part2
mel.eval('setAttr "vrayPhysicalCameraShape.vrayCameraPhysicalOn" 1;')


However, executing everything at once produces an error:
// Error: line 1: setAttr: No object matches name: vrayPhysicalCameraShape.vrayCameraPhysicalOn //
# Error: RuntimeError: file line 6: Error occurred during execution of MEL script
line 1: setAttr: No object matches name: vrayPhysicalCameraShape.vrayCameraPhysicalOn #

This happens regardless of using mel or python.
Is there a native python or mel command for this action, without having to execute as a two part script?


Thank you.

You have to do an evalDefered, not a eval.

[MjTheHunter]

Can't make it work.
the help files says that evalDeffered is not supported in python.
I got the script to work by including this line:

mel.eval('vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalOn;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalType;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalFilmWidth;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalFocalLength;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalSpecifyFOV;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalFOV;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalZoomFactor;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalDistortionType;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalDistortion;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalLensFile;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalDistortionMap;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalFNumber;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalLensShift;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalShutterSpeed;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalShutterAngle;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalShutterOffset;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalLatency;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalISO;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalSpecifyFocus;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalFocusDistance;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalExposure;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalWhiteBalance;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalVignetting;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalVignettingAmount;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalBladesEnable;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalBladesNum;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalBladesRotation;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalCenterBias;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalAnisotropy;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalUseDof;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalUseMoBlur;vrayAddAttr |vrayPhysicalCamera|vrayPhysicalCameraShape vrayCameraPhysicalSubdivs;')


Ideally I would like to avoid that.

[bigbossfr]

Can't make it work.
the help files says that evalDeffered is not supported in python.

mel.evalDefered('vray addAttributesFromGroup |vrayPhysicalCamera|vrayPhysicalCameraShape vray_cameraPhysical 1;')

?

[MjTheHunter]

This is what I get.
# Error: AttributeError: file <maya console> line 1: 'module' object has no attribute 'evalDeferred' #

[bigbossfr]

This is what I get.
# Error: AttributeError: file <maya console> line 1: 'module' object has no attribute 'evalDeferred' #

mel.eval('evalDeferred("vray addAttributesFromGroup |vrayPhysicalCamera|vrayPhysicalCameraShape vray_cameraPhysical 1;")')

Something like this (i can not test for you now).

[MjTheHunter]

Spoke too soon.. Still no luck.

cmds.camera()
camlist = cmds.ls(sl=True)
cmds.rename(camlist[0], 'vrayPhysicalCamera')
mel.eval('evalDeferred("vray addAttributesFromGroup |vrayPhysicalCamera|vrayPhysicalCameraShape vray_cameraPhysical 1;")')
mel.eval('setAttr "vrayPhysicalCameraShape.vrayCameraPhysicalOn" 1;')

execute

// Error: line 1: setAttr: No object matches name: vrayPhysicalCameraShape.vrayCameraPhysicalOn //
# Error: RuntimeError: file <maya console> line 5: Error occurred during execution of MEL script
line 1: setAttr: No object matches name: vrayPhysicalCameraShape.vrayCameraPhysicalOn #


camera name is vrayPhysicalCamera
camera shape is vrayPhysicalCameraShape

[t.petrov]

You have to make the second mel.eval command to be deferred.
The first command has some gui effects, which are executed in background and you have to execute the second command when they have finished.
To do so you have to execute

mel.eval('setAttr "vrayPhysicalCameraShape.vrayCameraPhysicalOn" 1;')

In a deferred manner...

[MjTheHunter]

That fixed the error, but it doesn't seems to set the physicalCam to On?

[t.petrov]

For me it works, even without evalDeferred calls, but I'm using Maya 2011 on linux.
What V-Ray, Maya and OS version are you using?

[MjTheHunter]

Maya 2013 edu, vray 2.3 edu and windows 7.