Maya command代码段

动画相关

获取物体有多少个关键帧

cmds.keyframe(name, q=True, keyframeCount=True)

获取物体第一个动画帧帧数

cmds.findKeyframe(name, which='first')

获取物体最后一个动画帧帧数

cmds.findKeyframe(name, which='last')

修复乱轴曲线

cmds.filterCurve(name_list)

复制粘贴单个指定属性动画

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# 这里是复制摄像机焦距动画
cmds.copyKey(cam, at='fl')
cmds.pasteKey(dup_cam, at='fl')

显示层

设置显示层的颜色

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cmds.setAttr(layerName+'.color', index)
cmds.setAttr(dag+'.overrideEnabled', True)
cmds.setAttr(dag+'.overrideColor', index)

列出跟物体连接的显示层

cmds.listConnections(dag, s=True, t='displayLayer')

物体对象

求不规则物体的长宽高

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box = cmds.exactWorldBoundingBox(cmds.ls(sl=1))
width_x = box[3] - box[0]
height_y = box[4] - box[1]
depth_z = box[5] - box[2]

创建一条曲线

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# 需提供一个点位置列表
position = cmds.xform(obj, q=True, t=True, worldSpace=True)
cmds.curve(p=position, d=True)

求曲线长度

cmds.arclen(curve)

根据两条曲线创建模型

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cmds.nurbsToPolygonsPref(f=3)
cmds.loft(curve1, curve2, ch=0, d=1, po=1, rsn=1, name=name+'_path')

获取物体属性列表

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cmds.findKeyframe(obj, curve=True)
cmds.listAttr(obj, k=True, u=True)

获取选中模型点的位置

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sel_vtx = cmds.ls(sl=1)
vtx_position = cmds.pointPosition(sel_vtx)

获取Group下所有mesh类型

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maya.cmds.listRelatives(cmds.ls(sl=1)[0],
												allDescendents=True,
												noIntermediate=True,
												fullPath=True,
												type="mesh",
												path=True)

视图

获取拍屏激活的视图名

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cmds.playblast(activeEditor=True)
cmds.playblast(activeEditor=True).split('|')[-1] # 得到实际名称

命名空间

获取命名空间列表

namespace_list = cmds.namespaceInfo(recurse=True, listOnlyNamespace=True)

删除指定的命名空间

cmds.namespace(moveNamespace=(':' + namespace_list[-1], ':'), force=True)

摄像机

为摄像机添加素材

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# 1.得到摄像机的名字和形状节点
cam = cmds.ls(sl=1)[0],  camShape = listRelatives(cam, s=1)[0]

# 2.得到指定物所有连接节点的列表
image_plane = cmds.listConnections(camShape, t='imagePlane')

# 3.检查是否有image节点，如果没有创建
if image_plane:
   imp = image_plane[0]
else:
   imp = cmds.shadingNode('imagePlane', asUtility=True)

# 4.连接属性到摄像机
cmds.connectAttr(imp + '.message', camShape + '.imagePlane', nextAvailable=True)
cmds.imagePlane(imp, edit=True, camera=camShape)

# 5.素材指定给摄像机, 开启素材帧序列动画
cmds.setAttr(imp+ '.imageName', image_seq, tyoe='string')
cmds.setAttr(imp + '.useFrameExtension', True)

摄像机额外属性设置

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cmds.setAttr(imp+'.lockedToCamera', 1)
cmds.setAttr(imp+'.sizeX', cmds.getAttr(camShape+'.horizontalFilmAperture'))
cmds.setAttr(imp+'.sizeY', cmds.getAttr(camShape+'.verticalFilmAperture'))
cmds.setAttr(imp+'.width', cmds.getAttr(camShape+'.orthographicWidth'))
cmds.setAttr(imp+'.height', cmds.getAttr(camShape+'.orthographicHeight'))
cmds.setAttr(imp+'.depth',  5000)
cmds.setAttr(imp+'.displayOnlyIfCurrent', True)
cmds.setAttr(imp+'.displayMode', 2)
cmds.setAttr(imp+'.frameCache', seq_time+50)
cmds.setAttr(imp+'.fit', 4)

为摄像机创建地平线

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horizon = cmds.circle(normal=(0,1,0), name='horizon_curve1', constructionHistory=False)[0]
cmds.pointConstraint(cam, horizon)
cmds.addAttr(horizon, longName='camera', attributeType='message')
cmds.setAttr(horizon + '.overrideEnabled', True)
cmds.setAttr(horizon + '.overrideColor', 16)
cmds.connectAttr(cam + '.message', horizon + '.camera')

操作

记录撤销操作还原

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cmds.undoInfo(openChunk=True)
cmds.undoInfo(closeChunk=True)

窗口

打印出maya中所有窗口名称和类型

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from PySide2 import QtWidgets

all_ui = {w.objectName(): w for w in QtWidgets.QApplication.allWidgets()}
for k,v in all_ui.items():
    print k, v.__class__

给Maya添加一个全局按钮

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import maya.OpenMayaUI as omUI
from PySide2 import QtCore, QtGui, QtWidgets
import shiboken2,time
from functools import partial
 
def getMayaWindow():
    ptr = omUI.MQtUtil.mainWindow()
    return shiboken2.wrapInstance(long(ptr), QtWidgets.QMainWindow)
 
class Project_Display:
    def __init__(self):
        self.mayaWin = getMayaWindow()
        
    def myShow(self):
        self.projectBtn = QtWidgets.QPushButton(self.mayaWin)
        self.projectBtn.setGeometry(QtCore.QRect(500, 210, 100, 23))
        self.projectBtn.setObjectName("pushButton")
        self.projectBtn.setText( "PushButton")
        self.projectBtn.clicked.connect(lambda *args: self.test1())
        self.projectBtn.show()
 
    def test1(self):
        print 'test'
 
def main():
    aa = Project_Display()
    aa.myShow()
main()

PySide2 例子

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import maya.cmds as cmds
from PySide2 import QtWidgets as QtGui
from shiboken2 import wrapInstance
import maya.OpenMayaUI as omui

DIALOGNAME = "My Dialog"

def getMayaMainWin():
    pointer = omui.MQtUtil.mainWindow()
    return wrapInstance(long(pointer), QtWidgets.QMainWindow)

mayaWindow = getMayaMainWin()
mayaWindow.setWindowOpacity(1)

class MyDialog(QtGui.QDialog):
    def __init__(self, parent=None):
        super(MyDialog, self).__init__(parent)
        layout = QtWidgets.QVBoxLayout()
        copy_bt = QtWidgets.QPushButton('Copy')
        paste_bt = QtWidgets.QPushButton('Paste')
        layout.addWidget(copy_bt)
        layout.addWidget(paste_bt)
        self.setLayout(layout)

        self._initUI()

    def _initUI(self):
        self.setObjectName(DIALOGNAME)

if __name__ == "__main__":
    if cmds.window(DIALOGNAME, exists=True, query=True):
        cmds.deleteUI(DIALOGNAME)

    dialog = MyDialog(parent=mayaWindow)
    dialog.show()

环境和配置

获取maya预设路径

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import os
_dir = os.environ.get('MAYA_APP_DIR')

阿诺德渲染设置

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mc.setAttr('defaultRenderGlobals.currentRenderer', 'arnold', typ='string')
mtoa.core.createOption()

mc.setAttr('defaultArnoldRenderOptions.AASamples', 4)
mc.setAttr('defaultArnoldRenderOptions.GIDiffuseSamples', 4)
mc.setAttr('defaultArnoldRenderOptions.GISpecularSamples', 2)
mc.setAttr('defaultArnoldRenderOptions.GITransmissionSamples', 2)
mc.setAttr('defaultArnoldRenderOptions.GISssSamples', 8)
mc.setAttr('defaultArnoldRenderOptions.GIVolumeSamples', 2)
mc.setAttr('defaultArnoldRenderOptions.lock_sampling_noise', 1)
mc.setAttr('defaultArnoldRenderOptions.use_sample_clamp', 1)
mc.setAttr('defaultArnoldRenderOptions.AASampleClamp', 5)