select a node and get a list of currently selected nodes
# method 1
cmds.select('nodeName')
selection = cmds.ls(sl=True)
# method 2
node_list = cmds.ls('nodeName*')use wildcards (*, ?) to select multiple nodes at once
add to a selection
cmds.select('nodeName', add=True)clear a selection
cmds.select(cl=True)working with nodes
# create and delete
cmds.createNode('nodeType', n='nodeName')
# adding 'Shape' to the end when creating a shape node
properly names the transform node as well
cmds.delete('nodeName')
# group nodes
cmds.group(n='groupName', em=True)
cmds.parent('nodeName', 'groupName')
# get node type
type = cmds.nodeType('nodeName')check if a node exists
if cmds.objExists('nodeName') == 1:
# the node existsadd or remove a node from a set
cmds.sets('node_name', add='set_name') # add
cmds.sets('node_name, remove='set_name') # removeworking with attributes
# set an attribute
cmds.setAttr('node.attr', 'example', type='string')
# get an attribute's value
value = cmds.getAttr('node.attr')
# get a list of all attributes of a node
attr_list = cmds.listAttr('node')
# add an attribute
cmds.addAttr(at='float', dv=0, max=1, min=-1, nn='Attr Name', ln='attrName')get the shape node from the transform node
cmds.listRelatives('trans_node', typ='shape', c=True)[0]get the transform node from the shape node
cmds.listRelatives('shape_node', typ='transform', p=True)[0]center pivot
cmds.xform('nodeName', cp=True)freeze transforms
cmds.select('nodeName')
cmds.makeIdentity(apply=True, t=1, r=1, s=1, n=0, pn=1)delete history
# all construction history
cmds.delete(all=True, ch=True)
# only selected nodes
cmds.select('nodeName')
cmds.delete(ch=True)create and assign a shader
cmds.shadingNode('shaderType', n='shaderName', asShader=True)
cmds.sets(n='shaderGroupName', em=True, r=True, nss=True)
cmds.connectAtttr('shaderName.outColor', 'shaderGroupName.surfaceShader')
cmds.select('geoName')
cmds.hyperShade(assign='shaderName')create a keyframe
value = 1
frame_num = 10
cmds.setKeyframe('nodeName', v=value, at='attrName', t=frame_num)create an expression
cmds.expression(a='node.attribute', s='expression')get current viewed camera
for viewport in cmds.getPanel(type='modelPanel'):
current_cam = cmds.modelEditor(viewport, q=1, av=1, cam=1)create a camera and image plane
cmds.camera(n='cameraName', fl=50)
cmds.setAttr('cameraName.renderable', 1)
cmds.imagePlane('n='imagePlaneName', c='cameraName')
cmds.setAttr('imagePlaneName.depth', 1000)
# turn image plane off
cmds.setAttr('imagePlaneName.displayMode', 0)
# turn image plane on
cmds.setAttr('imagePlaneName.displayMode', 3)
cmds.lookThru('cameraName')fit image plane to resolution gate
import maya.mel as mel
mel.eval("source AEimagePlaneTemplate.mel")
mel_command = "AEinvokeFitRezGate %s->%s.sizeX %s->%s.sizeY" % (cam, img_plane, cam, img_plane)
mel.eval(mel_command)get current file name and path
import maya.cmds as cmds
import os.path
file_path = cmds.file(q=True, sn=True)
file_name = os.path.basename(file_path)set project and open a file
import maya.cmds as cmds
import maya.mel as mel
mel.eval('setProject \"' + 'full/project/path' + '\"')
cmds.file('fileName', o=True, f=True)save a file under a new name
import maya.cmds as cmds
cmds.file(rename='new_name')
cmds.file(force=True, save=True, type='mayaBinary')create a reference
cmds.file('full/path/to/file', r=True, mnc=False, nc='namespace', op="v=0;")get a list of all references
references = cmds.ls(type='reference')get a reference file path
path = cmds.referenceQuery('referenceName', f=True, shn=True)replace a reference
cmds.file('path/to/new/reference/file', loadReference='refName')delete a selected reference
selection = cmds.ls(sl=True)
for obj in selection:
ref = cmds.referenceQuery(obj, f=True)
cmds.file(ref, rr=True)export selected geometry
import maya.cmds as cmds
import os.path
# select desired geometry prior to export
fileName = 'exportedGeo.mb'
dirPath = 'full/path/to/desired/directory'
type = 'mayaBinary'
filePath = os.path.join(dirPath, fileName)
cmds.file(filePath, op='v=0;', typ=type, pr=Falsale, es=True)check if a node name already exists, and add numbers if it does
node_name = 'test_geo'
if cmds.objExists(node_name)
count = 0
node_list = cmds.ls(node_name + '_*')
for node in node_list:
name_parts = node.split('_')
total = len(name_parts)
num = int(name_parts[total]) - 1
if num > count:
count = num
count += 1
result_name = '%s_%02d' % (node_name, count)
else:
result_name = node_nameprint a result on the Maya command line
import sys
sys.stdout.write('# Result: message #')raise an error
cmds.error('Error message')basic ui start
import maya.cmds as cmds
def ui():
# define ui
uiName = 'uiName'
uiTitle = 'ui title'
width, height = [200, 200]
# check if window exists
if cmds.window(uiName, ex=True):
cmds.deleteUI(uiName)
# create window
window = cmds.window(uiName, t=uiTitle, wh=(width, height), s=False, mxb=False, rtf=False)
# add elements to ui
cmds.columnLayout(cal='left')
cmds.text('example')
cmds.setParent('..')
# show window
cmds.showWindow(window)
ui()some ui layouts and controls
cmds.columnLayout()
cmds.rowLayout()
cmds.tabLayout()
cmds.separator()
cmds.button()
cmds.text()
cmds.textFieldGrp()
cmds.checkBox()
cmds.floatFieldGrp()
cmds.optionMenu()
cmds.menuItemtem()working with controls
# edit a control
cmds.controlCmd('controlName', e=True, attrFlag=newValue)
# query a control
cmds.controlCmd('controlName', q=True, attrFlag=True)
# disable or enable a control
cmds.disable('controlName', v=True)replace a control
def replaceControl(*args):
cmds.deleteUI('controlName')
cmds.controlCmd('ctrlName', flags=values, p='parentLayout')
def changeMenuItems(*args):
cmds.deleteUI('controlName')
cmds.optionMenu('ctrlName', flags=values, p='parentLayout')
cmds.menuItem('new item 1')
cmds.menuItem('new item 2')
cmds.setParent('..')