The new API 2.0 is attempting to make it a more pythonic wrapper by actually returning values instead of making you pass references. It was also a bit cumbersome when you have to use the special helper functions to create python "pointers" that can be passed for return values on functions that explicitly need a type you don't normally have.
On Fri, May 18, 2012 at 9:52 AM, Serena Xu <[email protected]> wrote: > oooh I see. Thank you! yea that part with passing a reference to store > the result is confusing. > > On May 18, 12:48 pm, Justin Israel <[email protected]> wrote: > > He is just creating a new MPoint to be used when it is passed into > > getClosestPoint. The method will use that outPoint reference to store the > > result. Really he didn't have to initialize it with (0,0,0), because > thats > > the default anyways: > > > > print om.MPoint() == om.MPoint(0.0, 0.0, 0.0) > > # True > > > > If you are a python guy, the maya api can be a little confusing because > its > > very C++ oriented. You often are asked to pass along a reference for the > > result to be stored, as opposed to expecting a return value as a result. > > > > > > > > > > > > > > > > On Fri, May 18, 2012 at 9:33 AM, Serena Xu <[email protected]> > wrote: > > > Thanks for your reply! I still have a question about outPoint. How do > > > you get that initial value? > > > > > On May 18, 11:53 am, Kamil Hepner <[email protected]> wrote: > > > > If you want to use maya python API, try this: > > > > > > import maya.OpenMaya as om > > > > > > om.MGlobal.clearSelectionList() > > > > > > om.MGlobal.selectByName('pCube1') > > > > > > sList = om.MSelectionList() > > > > > > om.MGlobal.getActiveSelectionList(sList) > > > > > > item = om.MDagPath() > > > > > > sList.getDagPath(0, item) > > > > > > item.extendToShape() > > > > > > fnMesh = om.MFnMesh(item) > > > > > > inPoint = om.MPoint(0, 2, 3) > > > > > > outPoint = om.MPoint(0.0, 0.0, 0.0) > > > > > > worldSpace = om.MSpace.kWorld > > > > > > fnMesh.getClosestPoint(inPoint, outPoint, worldSpace) > > > > > > print outPoint[2] > > > > > > Or you can use simpler pymel function getClosestPoint(), from Mesh > class, > > > > it's depend of what you want. > > > > > > Cya! > > > > > > 2012/5/18 Serena Xu <[email protected]> > > > > > > > I would like to get the information of closest vertex on a cube to > the > > > > > given point. I'm unsure of the type of argument I'm suppose to put > as > > > > > the second argument of the getClosestPoint() > > > > > Please help! > > > > > > > def test(): > > > > > cube = cmds.polyCube() > > > > > > > pointInfo = om.MPointOnMesh() > > > > > point = om.MPoint( 0, 8, 3) > > > > > cubeWS = om.MMeshIntersector() > > > > > result = cubeWS.getClosestPoint (point, pointInfo, 10) > > > > > position = [(result.x), (result.y), (result.z)] > > > > > > > return (position) > > > > > > > -- > > > > > view archives:http://groups.google.com/group/python_inside_maya > > > > > change your subscription settings: > > > > >http://groups.google.com/group/python_inside_maya/subscribe > > > > > -- > > > view archives:http://groups.google.com/group/python_inside_maya > > > change your subscription settings: > > >http://groups.google.com/group/python_inside_maya/subscribe > > -- > view archives: http://groups.google.com/group/python_inside_maya > change your subscription settings: > http://groups.google.com/group/python_inside_maya/subscribe > -- view archives: http://groups.google.com/group/python_inside_maya change your subscription settings: http://groups.google.com/group/python_inside_maya/subscribe
