MAYA _ Motion path no flip

Sometimes while using motion path, flipping is hard to avoid, here is one solution :
- motion path your main object to the path "path1" blue curve
- duplicate "path1, rename it to "path2", offset it, delete history and edit it to shows the direction pink curve
- create a locator "loc1" and motion path it to the path "path2"
- connect the Uvalue of "path1" to "path2" so they have the same speed
- in the motionpath1 attribute, set follow, object up and in the world up object field enter "loc1"

EDIT : Actually the best method is by far to use a curve on surface as motion path and choose the normal type. To create a curve on surface, first create a surface, then make it live and create a curve on it.

NUKE _ convert 3DTransform to 2DTransform

Reconcile3D node -> create keyframe then link the XY values to a Transform

MAYA / SOuP _ Bmesh to create trees

Apply Bmesh SOuP's node on joint hierarchy to create a base mesh quickly, then adjust the size (not the scale) of each joint to change the width of the BMesh. Can change the position of the joint further, useful for tree/branches.

MAYA / VRAY / MEL _ viewport snapshot in Vray VFB

// Vray VFB viewport snapshot
// create it in maya's renderview then load it in Vray VFB
global proc VrayVFBsnapshot () 
{
 // create snapashot from current viewport camera 
 RenderViewWindow; // open renderview
 string $panel = `getPanel -wf`;
 string $camera = `modelEditor -q -camera $panel`;
 renderWindowRenderCamera snapshot renderView $camera; // create snapshot

 // get path to TMP image
 string $workspaceDir = `workspace -q -fullName`;
 string $imageDir = `workspace -q -fileRuleEntry "images"`;
 string $imagePath =  $workspaceDir  + "/" + $imageDir +  "/" + "TMP_snapshot";
 print $imagePath;
 sysFile -delete ($imagePath+".jpg"); // delete previous snapshot -- Windows
 setAttr "defaultRenderGlobals.imageFormat" 8; // set maya software to .jpg to save it as a jpg
 renderWindowSaveImageCallback "renderView" $imagePath ""; // save snapashot to .jpg file

 // open image in vray vfb
 vrayShowVFB; // open Vray VFB
 vray vfbControl -loadimage ($imagePath+".jpg");
}

NUKE _ merge PNG _ PSDmerge node

Having trouble merging PNG or PSD files with alpha  in nuke?
Use this hidden node to merge them !

nuke.nodes.PSDMerge()

or open a PSD in nuke and click on Breakout Layers and the node will be created.
or tools>other>update  then tools>other>psdmerge

NUKE _ mosaic / pixellate node

Blocky - mosaic effect in nuke
If someone needed a mosaic filter in nuke, no need to turn to 3rd party plugins, or doing resizes, it's right there. Just have to load it, because it's hidden by default. It's called blocky. You can load it in your custom menu.py, by adding these lines, for example:

nuke.createNode("Blocky")

quoted from http://thoughtvfx.blogspot.fr/2011/07/blocky-mosaic-effect-in-nuke.html

MAYA _ jiggle batch render

If bug when batch rendering jiggle :
Edit > Keys > Bake Simulation (use the option box)
Tick the "Control Points" option to bake the animation onto each vertice, and untick "Keep unbaked keys".

source

HOUDINI _ Divers

Export houdini color to Alembic via colorSet for Maya
- in houdini create anattribute promote and promote group Cd from Point to new class Vertex.
- in Maya use the mel command to import alembic :
AbcImport -mode import -rcs "/folder/Color.abc";
source

MAYA _ IK pole vector constraint joints move

Sometimes when applying pole vector constraint on a RP IK, the joints move, here is the fix :

"The fix, as it turns out, is really easy. Before you apply the pole vector constraint, you need to place your controller (whatever is going to drive the pole vector) exactly between the start of the IK chain, and the end effector, e.g., the shoulder and the wrist. This is quickly done by selecting the start and end joints, and then the controller, and creating a point constraint (do not maintain offset). Then delete the constraint. Next, use an aim constraint to point the controller directly at the middle joint (say, the elbow). Delete the constraint. Then you just need to move the controller along its pointing axis a little ways, to push it away from the bones. For example, if your aim vector for the constraint was +X, then push your controller a few units forward in its local X axis. Now you can create the pole vector and the joints shouldn’t snap at all."

from http://www.toadstorm.com/blog/?p=129

VRAY 3 _tips

Multi tile Uv texture -> just use one filetexture node then in the filename insert <UVTILE> and Vray will change it with the corresponding UV coordonate.
ex : path\color_<UVTILE>.jpg ->  path\color_u1_v1.jpg
More info on the help

MAYA _ nHair

To create nHair from custom curves :
- create guide curve
- select curve then nhair -> assign hair system
- select mesh then nhair -> create hair (optionbox choose the hairsytem)
To display the guidecurve after just uncheck intermediateobject in the attribute editor of their shape

MAYA 2016 _ new / tips

modeling :
holding ctrl Key + moving componenent : move along normal
multicut Tool : holding Ctrl+Shift : 90 degree cut / hloding shift : percent display
edit pivot + clic sur component : snap and align pivot

After creating a polygon primitive, you must activate the Show Manipulator Tool (Hotkey: T) before the In-View Editor appears.

Ctrl + 1 : toggle isolate
Alt + D : deselect

settings/preference :
animation  -> evaluation parralel and check GPU Override (faster for vertex animation/ skin)
display -> material loading Mode -> Parallel to avoid lag at scene opening when lot of shader
color management -> input color space rule : for texture color space, also check in attribute editor for file node to chose individual colorspace

single blendshape deformer:
create blendshape deformer on one mesh then windows - animation editor - blendshape, add new target clic on edit then edit the mesh uncheck edit and repeat to create blendshape directly on mesh.

dR_setActiveTransformAxis 3; // reset current manipulator handle to 3 axis
outlinerEditor -edit -expandAllItems 0 outlinerPanel1; // collapse all in docked outliner

NUKE / PYTHON _ copy text from .txt file and paste into the DAG

create a .txt file containing a nuke group or nodes (copy from nuke and paste as a text) then use this function in nuke to create a node from it

import nuke
from PySide import QtGui

def FromTxtToNukeNode():
 with open ("O:/_WORK/.../textfile.txt", "r") as myfile:
  data=myfile.read() #get the text in the .txt file as a string variable
 QtGui.QApplication.clipboard().setText(data) # set to clipboard
 nuke.nodePaste("%clipboard%") # paste into nuke DAG

NUKE _ rotate normal

set cut_paste_input [stack 0]
version 8.0 v5
push $cut_paste_input
Expression {
 temp_name0 expA
 temp_expr0 r*v1+g*v2
 temp_name1 expB
 temp_expr1 (1-r)*v1+g*v2
 temp_name2 expC
 temp_expr2 (1-r)*v1+(1-g)*v2
 temp_name3 expD
 temp_expr3 r*v1+(1-g)*v2
 channel0 rgba
 expr0 "\[\nif \{\[value val]<=1\} \{return expA\} else \{\nif \{\[value val]<=2\} \{return expB\} else \{\nif \{\[value val]<=3\} \{return expC\} else \{\nif \{\[value val]<=4\} \{return expD\}\n\}\}\}\n]"
 name Exp_rot_Normal
 tile_color 0x73168eff
 gl_color 0xffffffff
 label "_\n"
 note_font "Verdana Bold"
 note_font_color 0x1a131cff
 selected true
 xpos 142
 ypos -215
 addUserKnob {20 control}
 addUserKnob {7 val l valeur R 0 4}
 addUserKnob {7 v1}
 v1 {{"\[\nif \{\[value val]<=1\} \{return 1-val\} else \{\nif \{\[value val]<=2\} \{return val-1\} else \{\nif \{\[value val]<=3\} \{return 3-val\} else \{\nif \{\[value val]<=4\} \{return val-3\}\n\}\}\}\n]"}}
 addUserKnob {7 v2}
 v2 {{"\[\nif \{\[value val]<=1\} \{return val\} else \{\nif \{\[value val]<=2\} \{return 2-val\} else \{\nif \{\[value val]<=3\} \{return val-2\} else \{\nif \{\[value val]<=4\} \{return 4-val\}\n\}\}\}\n]"}}
}

MAYA / VRay _ sprite texture pixelated

If sprite particles get pixelated with Vray (when they scale) :
Vray -> Global Option ->  Materials -> uncheck texture filter map

MAYA / MEL_ offset animation multiple objects

// Proc to offset animation keyframe - two mode random or increment 
// select controllers and run the command : OffsetKeyFrame random 6 or OffsetKeyFrame increment 2
global proc OffsetKeyFrame (string $type, int $value)
{
    string $sel[] = `ls -sl`;
    
    if ($type == "increment")
    {
        int $val = 0;
        for ($item in $sel)
        {
        keyframe -e -iub true -r -o over -tc $val $item;
        $val += $value;
        }
    } 
    else if ($type == "random")
    {
    for ($item in $sel)
        {
        int $rnd = rand(0,$value);
        keyframe -e -iub true -r -o over -tc $rnd $item;
        }
    }
    select -r $sel;
}

MAYA_ Bake camera mapping / projection

I had problems to bake camera projection to 2D texture and for any reason Vray texture bake wasn't working properly. Here are the two solution I found :
- Baking the texture (but a bit blurry)
select the mesh and shader then in hypeshade -> edit -> convert to fileTexture (Maya Software)
- Create a texture reference object ( may not work well with animated deformation on mesh)
select the mesh then -> rendering -> texturing -> create texture reference object

MAYA _ perspective camera bug

To reset perspective camera when it goes away pressing f :
Select an object then : View panel -> View -> Look at selection

MAYA _ delete multiple shapes node for one transform

Sometime it occurs that one transform node has multiple shape node, to clean it and keep only one shape node :
File -> Optimize scene size -> Deformers

MAYA_clean motion path to constrain on curve

1. Create your motionPath as you normally would

2. Select the "motionPath1" node in you Channel Box inputs and you should see "U Value" and it should be keyframed. Select that attribute and Break Connections to kill the animation. This "U Value" is just like "Parameter" in PointOnCurveInfo nodes in that it will move your connected object along your curve using values 0-1. You think it would be that simple but you will likely get Cycle Check errors.

3. To clean up the setup and avoid errors you can use the connection editor to connect motionPath1 (allCoordinates "xyz") to the translate "xyz" values of whatever object you have attached to your path, and then simply delete the 3 addDoubleLinear nodes that are no longer necessary.

This leaves you with your curve->motionPath->attachedObject and also gives you all the other options that are built into the motionPath node like Follow, Twist, etc. I usually attach locators to motionPaths rather than directly attach objects and also like to use setRange nodes to expand the 0-1 value of "U value" to something more friendly to interact with like 0-10 or 0-100

Image in the Node Editor:
andrewandoru.com/images/motionpathrigging.jpg

source - Andrew Hake

AVID _ Divers

Duplicate track : mark in/out press alt+c then select an empty track and hit alt+v

MAYA _ Skin with a curve

To skin with a curve and deform with the control vertex :
- select a joint and the mesh -> bind skin -> smooth skin
- select the curve and the mesh -> edit smooth skin -> add influence option : check Use geometry
- go to the skin cluster and check Use component

AVID _ frame / shot / timecode filler

To burn timecode / frame for current track / and shot number in avid:

NUKE / PYTHON _ Toggle heavy node by class

def disableHeavyNodes():
    # Toggle value / 1 disable - 0 enable
    # RSMB / frischluft / sapphire zblur-zdefocus-glow
    global tgl
    try:
        tgl = not tgl
    except NameError:
        tgl = 1 

    nodeArray = ['OFXcom.revisionfx.rsmb3_vectors_v3','OFXcom.revisionfx.rsmb3_v3',
                         'OFXcom.frischluft.openfx.depthoffield_v1','OFXcom.frischluft.openfx.outoffocus_v1',
                         'OFXcom.genarts.sapphire.blursharpen.s_zblur_v1','OFXcom.genarts.sapphire.blursharpen.s_zdefocus_v1','OFXcom.genarts.sapphire.lighting.s_glow_v1']
    for a in nuke.allNodes():
        if a.Class() in nodeArray :
            a['disable'].setValue(tgl)

NUKE / PYTHON _ snippets

nuke.selectedNode().Class()

def reloadReads():
 for myNode in nuke.allNodes("Read") :
  myNode["reload"].execute()
 print "--> Reads reloaded"

MAYA / VRAY _ wave with distanceTex node

To procedurally create wave near object :

- create a VRayDistanceTex, a ramp and a shader.

- add object to distTex_set

- set the ramp like below.

- connect VRayDistanceTex.outColorR to ramp.Vcoord

- connect ramp to shader diffuse.

As it's heavy to calculate, it's better to bake it to a texture file map before rendering a long animation.

MAYA _ can't do planar mapping uv / OBJ group problem

Sometimes, there is some buggy mesh on which Maya can't apply a planar mapping and when trying to export and import obj to clean the mesh we get this warning :

"Your OBJ file contains faces shared by multiple groups. Maya cannot create multiple objects for this file. A single mesh object will be created instead. The OBJ group information will be captured in Maya sets."

Here is a trick (for multiple objects) :

export to OBJ turning groups and point groups option off then import it in Maya then mesh > separate.

MAYA _ same uv square size multiple mesh

In UV texture editor : polygons > layout  and set "Prescale" to "World".

maya help

MAYA _ Particle

Volume noise fitting particle 
http://www.djx.com.au/blog/2008/07/21/particlesamplerinfo-smoke/

See the particule after converting to mesh :
nParticleShape > attribute editor > object display > unchek intermediate object
When converted to mesh increse the max triangle resolution

Delete particule with an uniform field : https://www.youtube.com/watch?v=fZWa43u8KB4
create an uniform field, set lifespan > lifespanPP only, add expression before dynamics in lifespanPP
if(nParticle_verreShape.inputForce[0] >= 0.0001)
{nParticle_verreShape.lifespanPP = 0.0;}

Multiple emitters for same nParticuleShape :
Select nParticle, shift select emitter > nParticule > Use selected emitter
or
duplicate emitter using CTRL+d then Window -> Relationship Editors -> Dynamic Relationships, select the particles in the left side of the window, check Emitters in the upper part of the right window, and select both emitters. source

Change particule color with age - Vray
Add Vray per particle attribute export to nParticleShape.
Scroll down to extra attribute and check "age".
Assign a shader with a U ramp in diffuse (delete the placement node of the ramp) to the particle.
Create a particleSampler node and connect to ramp : particlesampler.age -> ramp.uCoord.

Randomize particule color - Vray
Add user scaler 1pp attribute to nParticleSHape
add runtime before dynamics expression to it : nParticleShape.userScalar1PP = rand(1);
Add Vray per particle attribute export to nParticleShape.
Scroll down to extra attribute and check "userScalar1PP"
Assign a shader with a U ramp in diffuse (delete the placement node of the ramp) to the particle.
Create a particleSampler node and connect to ramp : particlesampler.userScalar1PP -> ramp.uCoord.

Sprite
For simple setup use nParticles -> sprite Wizard.
For sequence file texture without spriteWizard in file node animate image number and check interactive sequence caching.
if random on birth, create spriteNumPP et expression nParticleShape1.spriteNumPP = int(rand(1,4));
For scale add dynamic attribute sprite scaleX PP and spritescale Y PP, right click and create ramp
For random rotate add attribute sprite twist PP and add creation expression nParticleShape1.spriteTwistPP = rand(-180,180);
pour animer rotation dans runtime expression :
nParticleShape1.spriteTwistPP += 1;

Display age (or other attribute) in viewport
particleShape -> shading -> numeric
attribute name : age
attribute name list

Move bad particle to hide them (dirty way)
Select individual particle (right click -> particle) then add a cluster to them and move the cluster !

http://www.tokeru.com/mayawiki/index.php?title=Particles

Steppy movement (ex : when attach emitter to motion path)
Create cache : evaluate every 0.2  and save every 5 and change the subframe in nucleus if needed.

MAYA _ surface attach/rivet

To create a locator that follow a face, in plugin manager load muscle, select two edges on your mesh, then :
Animation > Muscle > Bonus Rigging > Surface Attach

or use a follicule
vimeo.com/47456885

AFTER EFFECTS _ tips

 To launch a second instance of After effects :
"C:\Program Files\Adobe\Adobe After Effects CC 2015.3\Support Files\AfterFX.exe" -m
type it in cmd (windows) or save it in a .bat file and double click.


Shortcuts
b / n  work area end / start
- / =   zoom in/out timeline
ctrl shift h  Toggle Layer Controls in viewport
shift F4  toggle parent column
F4   toggle column
ctrl a   select all
ctrl shift a / F2  deselect all
ctrl L  lock layer
ctrl shift t   open effect panel for selected layer
ctrl shift p   open dialog box for position of selected layer
ctrl+   increase scale selected layer
ctrl-  decrease scale selected layer
shift F3  toggle graph editor/layer mode
ctrl shift d   split layer according time position
shift + / shift -   change blending mode
[    in point(start) of the layer
]  out point (end) of the layer
Alt Ctrl Shift N Split the frame containing the active viewer and create a new  locked viewer
x focus selected layer
Ctrl+Alt+B Set work area to duration of selected layers 
Shift+Esc Toggle between two recent composition
 Ctrl+Alt+U To choose which layer controls to show in a view, shortcut for :  choose View > View Options
Alt+Shift+M Set key on mask path for selected layer
L Toggle waveform on timeline

To manually edit/add shortcuts, edit the .txt file located here:
C:\Users\UserName\AppData\Roaming\Adobe\After Effects\*.*\Adobe After Effects *.* Shortcuts.txt
- "ToggleTabPanelMaximize" = "(RParen)"
-  "TimeTrimIn" = "(Ctrl+Alt+Shift+I)"
- "TimeTrimOut" = "(Ctrl+Alt+Shift+O)"
- for azerty keyboard, add "Pad" before numbers ex : 1 -> Pad1

Easy crop comp : select region of interest then composition - crop comp to region of interest
Preserve underlying transparency (small T check) = clipping mask in Photoshop
ctrl + double click pan behind tool = pivot to center

Some expressions

loopOut(type = "continue");
loopOut(type = "cycle", numKeyframes = 2)
loopOut(type = "pingpong", numKeyframes = 2)
loopOut(type = "offset", numKeyframes = 2)

# force fps animation
posterizeTime(8);
value

# round value
Math.round(effect("Slider Control")("Slider")) 
# keep only one decimal
effect("Slider Control")("Slider").value.toFixed(1)

#copy animation from layer and offset time
thisComp.layer(1).position.valueAtTime(time-1)

MAYA / MEL _ flat shaded viewport

edit : Now in Maya 2015 there is an option for that in the viewport -> lighting -> use flat lighting.

I didn't find a simple way to display a flat shaded viewport. So here is a simple script to toggle the viewport with a flat shaded view, usefull to see silouhette when animating. This mel script create a global render layer with a surface shader material override, to change the flat color just modify the surface shader.

// TOGGLE FLAT - using render layer
global proc toggleFlat ()
{
 if (`editRenderLayerGlobals -q -currentRenderLayer` == "defaultRenderLayer")
 { 
  // Check if Render Layer FLat exists or create it
  if (`objExists "RL_FLAT"`)
  {
   editRenderLayerGlobals -currentRenderLayer RL_FLAT;
  }
  else
  {
   createRenderLayer -n "RL_FLAT" -number 1 -makeCurrent -global;

   // SHADER ///
   string $shadName = "SH_FLAT";
   // Check if Shader doesn't exists and create it
   if (!`objExists $shadName`)
   {
    $shader = `shadingNode -n $shadName -asShader surfaceShader`;
    setAttr ($shader + ".outColor") -type double3 0.7 0.7 0.7; 
   } 

   hookShaderOverride("RL_FLAT", "", "SH_FLAT");
   editRenderLayerGlobals -currentRenderLayer RL_FLAT;
  }
  headsUpMessage "FLAT ON";
 }
 else
 {
  editRenderLayerGlobals -currentRenderLayer defaultRenderLayer;
  headsUpMessage "FLAT OFF";
 }
 
}

toggleFlat ();

NUKE / VRAY _ get 3d camera in nuke with vray exr pass

http://polygonspixelsandpaint.tumblr.com/post/40175774250

NUKE _ $gui

- keep subdivision of 3D objects low in GUI, high in render ($gui?10:100)
- keep motion blur sampling low in GUI, high in render ($gui?3:20)
-"$gui" in expressions will return 1 in the UI and 0 at render time. Great for enabling nodes only when rendering on the farm (use it in the disable knob or Switch node).

source

NUKE/PYTHON _ toggle fullscreen viewer

def FullscreenViewer():
 m = nuke.menu( 'Viewer' ).findItem( 'Toolbars/Bottom' )
 m.invoke()
 m = nuke.menu( 'Viewer' ).findItem( 'Toolbars/Top' )
 m.invoke()

NUKE _ find shortcut .py file

Edit shortcut without using menu.py
edit : nukeinstaldir\plugins\nukescripts\toolbars.py

Links

maya:
My Oh Maya!
fevrierdorian.com
cum-md.blogspot.fr
polygonspixelsandpaint.tumblr.com
berniebernie.fr/wiki
mayapy.wordpress.com
mayamel.tiddlyspot.com
http://ewertb.soundlinker.com/mel/mel.php
adrianomuraca.blogspot.fr
http://therenderblog.com
http://scriptsandtidbits.blogspot.fr
http://www.3dbuzz.com/forum/threads/157484-Maya-Demystified-The-Hidden-Marking-Menus
http://www.toadstorm.com/blog/
http://nymayausersgroup.blogspot.fr/
http://ianwaters.co.uk/wp/  MASH
http://bindpose.com  RIGGING

Soup
mayaspiral.blogspot.fr
http://www.tokeru.com/mayawiki/index.php?title=Soup

Houdini
http://www.tokeru.com/mayawiki/index.php?title=Houdini
http://ihoudini.blogspot.fr
http://odforce.net/
http://www.andynicholas.com/?cat=41
https://vimeo.com/user2030228
http://berniebernie.fr/wiki/Houdini_101
https://sites.google.com/site/fujitarium/Houdini
http://houdinitricks.com/
http://houdinibasic.blogspot.fr/2007/09/houdini-lesson-1.html
https://jurajtomori.wordpress.com/

V-ray:
https://github.com/BigRoy/mayaVrayCommandDocs/wiki
http://deex.info/wordpress2/vray-for-maya-tricks-and-tips/

nuke:
http://hagbarth.net
http://www.fevrierdorian.com/wiki/Commandes_de_base_(Nuke)
http://chrisglew.com/nuke/pythonscripts/
chrisglew.com
satheeshnuketutorials.blogspot.fr
http://www.tomas-lefebvre.com/#tools

after effects
Jr.Canest's AE Expression document
berniebernie.fr/wiki

MAYA _ Wire deformer rotation issue

When using a wire deformer with clusters there is rotation/twisting issue, to avoid :
- parent clusters, baseWire and Geo to the same controller

source

MAYA/VRAY/PYTHON _ fallof - occlusion shader

create a fallof and occlusion shader for Vray using python

#____________ FALLOF ____________#
def shFallof():
 # gamma node 
 cmds.shadingNode('gammaCorrect',asUtility=True, n='GammaTemp')
 cmds.setAttr('GammaTemp.gammaX', 0.455)
 cmds.setAttr('GammaTemp.gammaY', 0.455)
 cmds.setAttr('GammaTemp.gammaZ', 0.455)

 #Creates Ramp
 cmds.shadingNode('ramp', asTexture=True, n='facingRampTemp')
 # Remove middle color of ramp
 cmds.removeMultiInstance( 'facingRampTemp.colorEntryList[1]', b=True )
 #Modify Ramp
 cmds.setAttr('facingRampTemp.colorEntryList[2].color', 0,0,0, type='double3' )
 cmds.setAttr('facingRampTemp.colorEntryList[0].color', 1,1,1, type='double3' )
 cmds.setAttr('facingRampTemp.colorEntryList[2].position', 1)
 cmds.setAttr('facingRampTemp.interpolation', 1)

 #Creates Sampler Info node
 cmds.shadingNode('samplerInfo', asUtility=True, n='facingSamplerTemp')

 #Connects Ramp and Sampler
 cmds.connectAttr('facingSamplerTemp.facingRatio', 'facingRampTemp.vCoord', f=True)
 cmds.connectAttr('facingRampTemp.outColor', 'GammaTemp.value', f=True)

 # connect it to a surface shader
 cmds.shadingNode('surfaceShader', asShader=True, n='SH_TMP_Fallof')
 cmds.connectAttr('GammaTemp.outValue', 'SH_TMP_Fallof.outColor', f=True)

 # Select Ramp
 cmds.select('facingRampTemp', r=True)

 #Renames nodes so you can use the script as many times as you want
 cmds.rename('facingRampTemp', 'facingRamp_F')
 cmds.rename('facingSamplerTemp', 'facingSampler_F')
 cmds.rename('SH_TMP_Fallof', 'SH_Fallof')
 cmds.rename('GammaTemp', 'gammaCorrect_F') 

shFallof()


#____________ OCCLU ____________#
def shOcclu():
 # surface shader
 cmds.shadingNode('surfaceShader', asShader=True, n='SH_TMP_Occlu')
 cmds.shadingNode('VRayDirt', asShader=True, n='VrayDirt_TMP')
 cmds.connectAttr('VrayDirt_TMP.outColor', 'SH_TMP_Occlu.outColor', f=True)

 #Renames nodes so you can use the script as many times as you want
 cmds.rename('SH_TMP_Occlu', 'SH_Occlu')
 cmds.rename('VrayDirt_TMP', 'VrayDirt_O')

shOcclu()

MAYA _ float value annotation in viewport

Annotation node can't have float value, only string. So to display a value in viewport:
- dynamic- particles - particle tools : create one particle
- select particle shape and add a float attribute toto
- particleshape - render attribute - particle render type : numeric
- attribute name : toto
- then connect any value (like scaleX) to toto

MAYA/MEL _ toggle

//Toggle Isolate Selected in Current Panel
$currentPanel = `getPanel -withFocus`;
$state = `isolateSelect -q -state $currentPanel`;
if ($state == "0")
 {
    enableIsolateSelect $currentPanel 1; 
 }
else
 {
    enableIsolateSelect $currentPanel 0;
 }

// Toggle SHaded WIreframe
string $panel = `getPanel -wf`;
modelEditor -e -wos ( !`modelEditor -q -wos $panel` ) $panel; 

//ToggleOutliner:
if ( `window -exists outlinerPanel1Window` ) 
deleteUI -window outlinerPanel1Window; 
else 
tearOffPanel "Outliner" "outlinerPanel" false; 

MAYA/MEL _ second outliner

tearOffPanel "Outliner1" "outlinerPanel" false;
tearOffPanel "Outliner2" "outlinerPanel" false;

MAYA/VRAY _ linear workflow

Render and VFB settings

For texture map add a Vray texture input gamma attribute

Create a standard gray shader : Vray MTL with gamma correct node in diffuse, 0.5 value color and gamma value 0.455