Hi Justin,
I know this thread is old but hopefully you con help me out. I am new to
scripting in Maya. I have a script going that gives me a selection of all
faces across multiple objects that I want to apply vertex color to.
I have a python method working but it is very slow. I am attempting to use
the api since I hear it is faster. I used the code you pasted below and was
finally able to get component selection into a list. When I use the
resulting list of vertex indices from your code with a color array I have
made with setVertexColors, I get an overloaded function error. the point I
ran into the problem was in getting the appropriate object that the face
selection was tied to. My workaround was to use a for loop and
setVertexColor(colorVertexList[I], vList[I]). It works but is pretty much
the same speed as before, i'm sure since I am marching each index one at a
time. How would I set vertex color on the verts in vList calling
setVertexColors properly? Any advice is much appreciated.
Here is what I have, using your method for getting the vertex idexes:
import maya.OpenMaya as api
import maya.cmds as c
import maya.mel as mm
shadingGroup = cmds.listConnections('Dirt', type='shadingEngine')
componentsWithMaterial = cmds.sets(shadingGroup, q=True)
cmds.select(componentsWithMaterial)
first_face = componentsWithMaterial[0].split(":")[0]
if ']' in first_face:
selectedFace = str(first_face)
else:
selectedFace = str(first_face) + ']'
cmds.select(selectedFace)
facetSG = cmds.hyperShade(smn=True)
shader = cmds.ls(selection=True)
cmds.select(shader)
cmds.hyperShade(objects='')
objectAllFaces = cmds.ls(selection=True)
objectAllVerts = cmds.ls(cmds.polyListComponentConversion(objectAllFaces,
ff=True, tv=True))
for n in objectAllVerts:
cmds.select(n)
sel = api.MSelectionList()
api.MGlobal.getActiveSelectionList(sel)
compIter = api.MItSelectionList(sel, api.MFn.kMeshVertComponent)
component = api.MObject()
meshDagPath = api.MDagPath()
meshObj = om.MObject( )
sel.getDependNode(0,meshObj)
meshFn = om.MFnMesh(meshObj)
vList = []
colorVertexList = api.MColorArray ( )
while not compIter.isDone():
compIter.getDagPath(meshDagPath, component)
if not component.isNull():
vertIter = api.MItMeshVertex(meshDagPath, component)
while not vertIter.isDone():
vList.append(vertIter.index())
vertIter.next()
compIter.next()
for i in range(len(vList)):
colorVertexList.append(1.0,0.0,0.0,1.0)
for i in range(len(vList)):
meshFn.setVertexColor(colorVertexList[i], vList[i])
On Sunday, November 27, 2011 at 1:05:02 PM UTC-7, Justin Israel wrote:
> Thanks. I am quite lovely aren't I? LOL
>
> Here is a rough example that I thought of, using python commands and
> assuming a start and end selection
> https://gist.github.com/1398060
>
> I don't really check the original selection to see if its only two
> vertices or faces, but this should give you an idea. Hopefully I didn't
> over-think your problem.
> I used a regex to get the int vert/face number instead of using the maya
> api since that approach seems like too much code just to get the index from
> the selection:
>
> import maya.OpenMaya as api
>
> sel = api.MSelectionList()
> api.MGlobal.getActiveSelectionList(sel)
> compIter = api.MItSelectionList(sel, api.MFn.kMeshVertComponent)
>
>
> component = api.MObject()
> meshDagPath = api.MDagPath()
>
>
> vList = []
>
> while not compIter.isDone():
> compIter.getDagPath(meshDagPath, component)
> if not component.isNull():
> vertIter = api.MItMeshVertex(meshDagPath, component)
> while not vertIter.isDone():
> vList.append(vertIter.index())
> vertIter.next()
> compIter.next()
>
>
> I may be a little slow from the holiday weekend and overlooked some easier
> way to do it. But thats as much as I can do with a bunch of turkey in my
> stomach :-)
>
> -- justin
>
>
> On Nov 27, 2011, at 4:57 AM, Reza Shahsavary wrote:
>
> thx Justin
> ur Lovely
> but 2 questions if u don't mind!
> 1.what should i do if want to select my component mesh without typing
> surface name i.g :p.sphere..i`d like to do that with selection mesh
> 2.i just need to select my components in one direction(horizontal or
> vertical)
> thx
> P.M:i just uploaded a photo from maya.i need to selection like
> that.actually its selected by hand :)
>
>
> --
> view archives: http://groups.google.com/group/python_inside_maya
> change your subscription settings:
> http://groups.google.com/group/python_inside_maya/subscribe
> <my selection.jpg>
>
>
>
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