If you're comfortable using nodes to achieve your goal, then you might be interested in polyCut<http://download.autodesk.com/global/docs/maya2013/en_us/Nodes/polyCut.html> .
Here's an example as in maya ascii format; either run it as mel, or save it to polycut.ma or such. requires maya "2014"; createNode transform -n "mirrorCutPlane1"; setAttr ".r" -type "double3" 0 90 0 ; setAttr ".smd" 4; createNode sketchPlane -n "mirrorCutPlane1Shape" -p "mirrorCutPlane1"; setAttr -k off ".v"; createNode transform -n "polySurface1"; createNode mesh -n "polySurfaceShape1" -p "polySurface1"; setAttr -k off ".v"; setAttr -s 2 ".iog[0].og"; setAttr ".vir" yes; setAttr ".vif" yes; setAttr ".uvst[0].uvsn" -type "string" "map1"; setAttr ".cuvs" -type "string" "map1"; setAttr ".dcc" -type "string" "Ambient+Diffuse"; setAttr ".covm[0]" 0 1 1; setAttr ".cdvm[0]" 0 1 1; setAttr ".vbc" no; createNode polySphere -n "polySphere1"; createNode polyCut -n "polyCut1"; setAttr ".uopa" yes; setAttr ".ics" -type "componentList" 1 "f[*]"; setAttr ".ix" -type "matrix" 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1; setAttr ".ws" yes; setAttr ".mp" -type "matrix" 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1; setAttr ".ps" -type "double2" 2.0000002384185791 2 ; setAttr ".df" yes; connectAttr "polyCut1.out" "polySurfaceShape1.i"; connectAttr "polySphere1.out" "polyCut1.ip"; connectAttr "mirrorCutPlane1.t" "polyCut1.pc"; connectAttr "mirrorCutPlane1.r" "polyCut1.ro"; On Monday, 27 January 2014 18:13:31 UTC, Aren Voorhees wrote: > > Hey all, > > I am trying to create a tool for modeling that will delete all faces that > are located in negative x (as a modeler, I've always wanted something like > this). I've got most of it working - I create a list of the faces, then > loop through them, determining their position using the positions of their > verts. It's the last line, or few lines where I'm a bit lost. I'm > appending all faces that come back negative into a list, then trying to > delete that list. Clearly, I'm doing something wrong there. > > If you notice anything else that could be done better, feel free to let me > know! > > If anyone can help out a lost beginner, I'd be extremely thankful! > > import maya.cmds as cmds > > > #Define object name > > curSel = (cmds.ls (sl=True)[0]) > > > numOfFaces = len(cmds.getAttr(curSel + ".f[:]")) > > for i in xrange (0,numOfFaces): > > cmds.select(curSel + ".f[%d]" %i, add=1) > > > #Create list (array) of faces in current object > > faceIndexList = cmds.ls(sl=True,fl=True) > > > > #Loop through the list of faces from above > > for i in faceIndexList: > > > > #Selects the current face > > cmds.select (i) > > > > #Converts selection to verts (tv == toVerts) > > faceToVerts = cmds.polyListComponentConversion (tv=1) > > cmds.select (faceToVerts) > > > > #Stores the selected verts into a variable (fl == Flatten, which > lists out things individually) > > vertIndexList = (cmds.ls (sl=True,fl=True)) > > > > #Creating empty position variables to later store the vectors of the > verts in > > posX = 0 > > posY = 0 > > posZ = 0 > > > > #Loops through verts in vertIndexList > > for j in vertIndexList: > > > > cmds.select (j) > > > > #Sets the total number of selected verts (would be 4 in most > cases) > > totalVertNum = len(vertIndexList) > > > > #Gets the vector location of each vert > > vertPos = cmds.xform(query=True, translation=True) > > > > #Supposed add the X value of the selected vert to the value from > the previous itteration (starts at 0) > > posX += vertPos[0] > > #Supposed add the Y value of the selected vert to the value from > the previous itteration (starts at 0) > > posY += vertPos[1] > > #Supposed add the Z value of the selected vert to the value from > the previous itteration (starts at 0) > > posZ += vertPos[2] > > > > #Finds the center of the face by creating a vector > > faceCenter = (posX/totalVertNum), (posY/totalVertNum), (posZ/ > totalVertNum) > > > > #Creates empty list to store negative faces in > > negFaces = [] > > > > #If the faceCenterer variable is negative > > if faceCenter[0] < 0: > > > > #Appending all the negative x faces into negFaces > > negFaces.append (i) > > > > #I thought this would delete all faces that had been appended into > negFaces, but clearly I thought wrong! > > for i in negFaces: > > cmds.delete (i) > > > > > > > > > > > -- You received this message because you are subscribed to the Google Groups "Python Programming for Autodesk Maya" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/python_inside_maya/49e713fd-6235-4f4d-ac03-605674add1ee%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
