Also:
for cur in cur_list:
cmds.select(cur, add=True)
Can this not be done in a single call to select()?
On Thu, Jun 1, 2017 at 12:37 PM Michael Boon <[email protected]> wrote:
> Yeah read up on cProfile if you haven't already. It's really useful.
>
> This section looks very slow
> for edge in edges:
> vtx = cmds.ls(cmds.polyListComponentConversion(edge,fe=1,tv=1),fl=1)
> p1 = cmds.pointPosition(vtx[0])
> p2 = cmds.pointPosition(vtx[1])
> created_curve = cmds.curve(d=1,p=(p1,p2))
> cur_list.append(created_curve)
> The cmds.ls would be slow, and the cmds.curve would too, but without
> profiling I'm not sure if both are significant here.
> By switching to maya.api.OpenMaya and using an MFnMesh, you could iterate
> through the edges and find vertices much, much faster.
> I assume you could also create one big, complex curve instead of thousands
> of small ones. I'm not sure if you can do that using cmds or if you'd have
> to use the API for that too.
>
> Some stuff further down might need work too. I think you can select all of
> cur_list in a single call, for example: cmds.select(cur_list)
>
> This section:
> for obj in grp_list:
> list_all.extend(shape_list)
> list_all.extend(grp_list)
> will be very slow if grp_list is in the hundreds of thousands.
> I'm not sure you want to be adding both lists over and over again like
> that. You end up with a really gigantic list with a lot of duplicate
> entries, and it seems to be just so you can select it.
>
>
> On Thursday, 1 June 2017 10:08:19 UTC+10, Justin Israel wrote:
>
>>
>>
>> On Thu, Jun 1, 2017 at 11:48 AM likage <[email protected]> wrote:
>>
>>> I am trying to 'extract and convert' all the edges of the polygon (based
>>> on selection) into curves, then parent the curves as one. This is like a
>>> curve-based wireframe model.
>>>
>>> While Maya has a functionality that allows all edges to be converted
>>> into curves, but the functionality - "Polygon Edges to Curves", it works
>>> but not very ideal in my case as I would want all the created curves to be
>>> combined into one.
>>>
>>> import maya.cmds as cmds
>>> import pymel.core as pm
>>>
>>> edges =
>>> cmds.filterExpand(cmds.polyListComponentConversion(te=1),sm=32,ex=1)
>>> cur_list = []
>>> for edge in edges:
>>> vtx = cmds.ls(cmds.polyListComponentConversion(edge,fe=1,tv=1),fl=1)
>>> p1 = cmds.pointPosition(vtx[0])
>>> p2 = cmds.pointPosition(vtx[1])
>>> created_curve = cmds.curve(d=1,p=(p1,p2))
>>> cur_list.append(created_curve)
>>>
>>> # Select all the newly created curves
>>> for cur in cur_list:
>>> cmds.select(cur, add=True)
>>>
>>> # Get list of objects
>>> shape_list = pm.ls(pm.listRelatives(c=True))
>>> grp_list = pm.ls(pm.group(em=True, n='curve#'))
>>> list_all = []
>>> for obj in grp_list:
>>> list_all.extend(shape_list)
>>> list_all.extend(grp_list)
>>>
>>> # Parent (shape) objects to one Curve
>>> pm.select(list_all)
>>> pm.parent(r=True, s=True)
>>>
>>>
>>> While this code of mine does work, but if I tried to use it on a higher
>>> subdivision polygon, for example, create a normal pSphere and sets both its
>>> "Subdivisions Axis" and "Subdivisions Height" to 100, and execute the code
>>> I wrote.
>>> What happens here is that:
>>>
>>> - Maya seems to be hanging
>>> - Took a very long while to be process (seems to be more than 1 hour
>>> plus before that current maya session of mine crashes.)
>>>
>>> What can be done to minimize this long processing time? I am assuming
>>> that part of this 'long' time is due to the commands that I am using it to
>>> derive the vertex and creating them?
>>>
>>
>> Did you profile the different parts of your code to know for sure?
>>
>>
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