import maya.OpenMaya as OpenMaya import maya.OpenMayaMPx as OpenMayaMPx sl = OpenMaya.MSelectionList() OpenMaya.MGlobal.getActiveSelectionList(sl) itersl = OpenMaya.MItSelectionList(sl, OpenMaya.MFn.kDagNode) dagPath = OpenMaya.MDagPath() dagFn = OpenMaya.MFnDagNode() while (not itersl.isDone()): itersl.getDagPath(dagPath) try: dagPath.extendToShape() # get shaper node except: pass dagObject = dagPath.node() dagFn.setObject(dagObject) name = dagFn.name() print 'Get the Dag Node Name Is :', name itersl.next() # create MFnMeshVertex object = OpenMaya.MItMeshVertex(dagPath) while (not object.isDone()): print object.position().x object.next()
http://ewertb.soundlinker.com/api/api.php
https://nccastaff.bournemouth.ac.uk/jmacey/RobTheBloke/www/mayaapi.html
https://nccastaff.bournemouth.ac.uk/jmacey/RobTheBloke/www/research/maya/mfnanimcurve.htm
Python PIP升级:
python -m pip install --upgrade pip
Event in Maya Api to capture currentTime / frame change
http://download.autodesk.com/us/maya/2009help/API/class_m_event_message.html#c038e5bbbfc19b2772d1a01220b570c0
// ... // Our callback Id array to // store the Ids of all our callbacks // for later removal MCallbackIdArray myCallbackIds; // This is where the actual adding callback happens // We register our callback to the "timeChanged" event MCallbackId callbackId = MEventMessage::addEventCallback("timeChanged", (MMessage::MBasicFunction) MySampleCmd::userCB); // ... if(myCallbackIds.length() != 0) // Make sure we remove all the callbacks we added stat = MEventMessage::removeCallbacks(myCallbackIds);
class MySampleCmd : public MPxCommand { public: MySampleCmd(); virtual ~MySampleCmd(); // Our callback - implemented as a static method static void userCB(void* clientData); MStatus doIt( const MArgList& ); MStatus redoIt(); MStatus undoIt(); bool isUndoable() const; static void* creator(); public: // Our callback Id array to // store the Ids of all our callbacks // for later removal MCallbackIdArray myCallbackIds; };
// Clearing our callback Id array // for housekeeping myCallbackIds.clear(); } // Destructor MySampleCmd::~MySampleCmd() { // Make sure we remove all the callbacks we added // Failing to do so will result in fatal error if(myCallbackIds.length() != 0) // Remove the MEventMessage callback MEventMessage::removeCallbacks(myCallbackIds); } MStatus MySampleCmd::redoIt() { // This is where the actual adding callback happens // We register our callback to the "timeChanged" event MCallbackId callbackId = MEventMessage::addEventCallback("timeChanged", (MMessage::MBasicFunction) MySampleCmd::userCB); // Append the newly added callback's ID to our list of callback ids // for future removal myCallbackIds.append(callbackId); return MS::kSuccess; } MStatus MySampleCmd::undoIt() { MStatus stat; if(myCallbackIds.length() != 0) // Make sure we remove all the callbacks we added stat = MEventMessage::removeCallbacks(myCallbackIds); return stat; } // Our callback function void SafeSelect::userCB(void* clientData) { MGlobal::displayInfo( "Callback userCB called! " ); return; }
Get Points At Time
MStatus myPlugIn::GetPointsAtTime( const MDagPath& dagPath, const MTime& mayaTime, MPointArray& points ) { MStatus status = MS::kSuccess; points.clear(); MFnMesh fnMesh; // Move Maya to current frame MGlobal::viewFrame( mayaTime ); // You MUST reinitialize the function set after changing time! fnMesh.setObject( dagPath ); // Get vertices at this time status = fnMesh.getPoints( points ); return status; }
MStatus myPlugIn::doIt( const MArgList& args ) { MStatus status = MS::kSuccess; MDagPath dagPath; // .. determing dagPath from current selection, or whatever .. // MPointArray points; MTime currentTime, maxTime; // Get start- and end-frame from Maya currentTime = MAnimControl::minTime(); maxTime = MAnimControl::maxTime(); // Iterate through time while ( currentTime <= maxTime ) { // Get vertices at this time status = GetPointsAtTime( dagPath, currentTime, points ); // .. do something with the points here .. // // Advance by one frame currentTime++; } return status; }
M3dView Capture
(1)
#Import api modules import maya.OpenMaya as api import maya.OpenMayaUI as apiUI #Grab the last active 3d viewport view = apiUI.M3dView.active3dView() print view #read the color buffer from the view, and save the MImage to disk image = api.MImage() view.readColorBuffer(image, True) image.writeToFile('C:/test.jpg', 'jpg')
(2)
import os import maya.OpenMaya as mod_om import maya.OpenMayaUI as mod_om_ui import maya.cmds as mod_mc import maya.mel as mel view = mod_om_ui.M3dView.active3dView() image_ = mod_om.MImage() for frame in range(1,11): # Change the frame number mod_mc.currentTime(frame) for obj in ['headMouthScp_geo', 'pSphere1']: # Isolate the object, so that only that particular object is seen # Also Tried with turning off/on the visibility mod_mc.select(obj) mod_mc.isolateSelect('modelPanel4',s=1) mod_mc.isolateSelect( 'modelPanel4', addSelected=True ) #mod_mc.select(obj) #mod_mc.isolateSelect( 'modelPanel4', addSelected=True ) mod_mc.setAttr(obj + '.visibility', 0) mod_mc.setAttr(obj + '.visibility', 1) # Refresh the scene view.refresh() mod_mc.refresh() # Read Color Buffer view.readColorBuffer(image_, True) # Write The Color Buffer image_.resize(640, 480) image_.writeToFile('C:/Temp/Frame_Buffer_%s_%d.bmp' % (obj, frame), 'bmp') mod_mc.select(clear=True) mod_mc.isolateSelect( 'modelPanel4', state=0 )
(3)cmds context
import contextlib @contextlib.contextmanager def solo_renderable(solo_cam): # Disable all cameras as renderable # and store the original states cams = cmds.ls(type='camera') states = {} for cam in cams: states[cam] = mc.getAttr(cam + '.rnd') cmds.setAttr(cam + '.rnd', 0) # Change the solo cam to renderable cmds.setAttr(solo_cam + '.rnd', 1) try: yield finally: # Revert to original state for cam, state in states.items(): cmds.setAttr(cam + '.rnd', state) with solo_cam('myCamShape'): cmds.playblast()
OGL Render in backend:
import sys import os import contextlib try: import maya.cmds as cmds import maya.standalone as standalone standalone.initialize(name='python') except: raise ImportError def openScene(openPath): sceneName = os.path.basename(openPath[:-3]) print "opening path................. " cmds.file(openPath, open=True) if __name__ == "__main__": openScene(r"c:/test2.ma") cmds.hwRenderLoad() for x in xrange(1,68,1): print cmds.ogsRender(width=1280,height=720,cam='camera1',frame = x)
(4)code snipts
<1>
import maya.cmds as cmds
cmds.ls(*cmds.listHistory (mynode), type = 'animCurve' )
<2> iter by type
import maya.OpenMaya as om import maya.OpenMayaMPx as omp import maya.OpenMayaAnim as oma # just loop the animation curve it = om.MItDependencyNodes(om.MFn.kMesh) while not it.isDone(): aobj = it.item() print aobj #aniCur = oma.MFnAnimCurve(aobj) #print aniCur.name() it.next()
(5) save two matrixs into a float* array
// MMatrix stores double values, but I want floating point values on the GPU so convert them here. unsigned int numFloat = 32; float* temp = new float[numFloat]; unsigned int curr = 0; for(unsigned int row = 0; row<4; row++) { for(unsigned int column = 0; column<4; column++) { temp[curr++] = (float)omat(row, column); } } for(unsigned int row = 0; row<4; row++) { for(unsigned int column = 0; column<4; column++) { temp[curr++] = (float)omatinv(row, column); } }
in opencl use pointer offset
__global const float4* matrices, //first matrix is offset matrix, second matrix is offset matrix inverse __global const float4* matrixInverse = &(matrices[4]); __global const float4* matrix = matrices;
(6) command port eval scripts:
MEL:
commandPort -stp "python" -n ":5055" ;
cmds.commandPort (n=':6328', stp='python')other Python version:
import socket maya = socket.socket(socket.AF_INET, socket.SOCK_STREAM) maya.connect(("127.0.0.1", 5055)) maya.send("""maya.cmds.polySphere( radius=4 )""") The above code will create a new sphere in your currently running Maya. You can use any python terminal (doesn't have to be mayapy). (If you're running python3, the last command will produce an error until you change it to: maya.send(bytes("""maya.cmds.polySphere( radius=4 )""", 'UTF-8'))