paintNodeOpacity.py

paintNodeOpacity python code

This little code will help you to control nuke "rotopaint" nodes clone & paint brush opacity via some short-cut keys. I created this code for my fellow artist who's working with me in paint department.

Short-cut keys are assigned as per his need. You can use your custom short-cut keys.

There are 5 control option.

"shift+>",  "shift+<"
user can up & down the opacity value using "shift+>" and "shift+<". This will jump between current value to +0.05 or -0.05.

If your value will 1 it start to decrease 0.95, 0.9, 0.85 so one so forth....


"ctrl+>", "ctrl+<"
 user can up & down the opacity value using "ctrl+>" and "ctrl+<". This will jump between current value to +0.01 or -0.01.

If your value will 1 it start to decrease 0.99, 0.98, 0.97 so one so forth....

"ctrl+Shift+<" and "ctrl+Shift+<"
This will return the opacity value to default 1 and 0.

Hope this will help you guys.


updated Aug19th:  Fixed NameError:. In previous version, while user accidentally hit these short-cut nuke will pop-up the name error. This issue fixed now and removed "please select rotopaint node" message.


Download: paintOpacity.py

else: copy paste below code:

'''
Created on 07-august-2013
@author: satheesh-R
mail - satheesrev@gmail.com
'''


import nuke, math, os

def paintOpacityUp():
    selNode = None
    try:
        selNode = nuke.selectedNode()
    except ValueError: # no node selected
        pass
    cls = selNode.Class()

    if cls  == 'RotoPaint':
        for a in nuke.selectedNodes():
            getValue = a['toolbar_opacity'].value()
            newValue = sorted([0, getValue + 0.05, 1])[1]
            setVal = a['toolbar_opacity'].setValue(newValue)
    else:
        return

def paintOpacityUpIncrease():
    selNode = None
    try:
        selNode = nuke.selectedNode()
    except ValueError: # no node selected
        pass
    cls = selNode.Class()

    if cls  == 'RotoPaint':
        for a in nuke.selectedNodes():
            getValue = a['toolbar_opacity'].value()
            newValue = sorted([0, getValue + 0.01, 1])[1]
            setVal = a['toolbar_opacity'].setValue(newValue)
    else:
        return


def paintOpacityDown():
    selNode = None
    try:
        selNode = nuke.selectedNode()
    except ValueError: # no node selected
        pass
    cls = selNode.Class()

    if cls  == 'RotoPaint':
        for a in nuke.selectedNodes():
            getValue = a['toolbar_opacity'].value()
            newValue = getValue - 0.05
            if newValue < 0: newValue = 0
            setVal = a['toolbar_opacity'].setValue(newValue)
    else:
        return

def paintOpacityDecrease():
    selNode = None
    try:
        selNode = nuke.selectedNode()
    except ValueError: # no node selected
        pass
    cls = selNode.Class()

    if cls  == 'RotoPaint':
        for a in nuke.selectedNodes():
            getValue = a['toolbar_opacity'].value()
            newValue = getValue - 0.01
            if newValue < 0: newValue = 0
            setVal = a['toolbar_opacity'].setValue(newValue)
    else:
        return

def paintOpacityDefault():
    selNode = None
    try:
        selNode = nuke.selectedNode()
    except ValueError: # no node selected
        pass
    cls = selNode.Class()

    if cls  == 'RotoPaint':
        for a in nuke.selectedNodes():
            a['toolbar_opacity'].setValue(1)

    else:
        return

def paintOpacityZero():
    selNode = None
    try:
        selNode = nuke.selectedNode()
    except ValueError: # no node selected
        pass
    cls = selNode.Class()

    if cls  == 'RotoPaint':
        for a in nuke.selectedNodes():
            a['toolbar_opacity'].setValue(0)

    else:
        return
_______________________________________________



menu.py

import paintOpacity

menuBar = nuke.menu("Nuke")

menuBar.addCommand('Edit/Node/paintOpacity/Up', 'paintOpacity.paintOpacityUp()', 'shift+>')
menuBar.addCommand('Edit/Node/paintOpacity/Down', 'paintOpacity.paintOpacityDown()', 'shift+<')
menuBar.addCommand('Edit/Node/paintOpacity/increase', 'paintOpacity.paintOpacityUpIncrease()', 'ctrl+.')
menuBar.addCommand('Edit/Node/paintOpacity/decrease', 'paintOpacity.paintOpacityDecrease()', 'ctrl+,')
menuBar.addCommand('Edit/Node/paintOpacity/default', 'paintOpacity.paintOpacityDefault()', 'ctrl+shift+>')
menuBar.addCommand('Edit/Node/paintOpacity/zero', 'paintOpacity.paintOpacityZero()', 'ctrl+shift+<')