#Mesh unfolder demo how to#
#Mesh unfolder demo series#

MyFancyList = list() and myFancyList = are equivalent. To get started, where can I find commands for OpenMaya API? Google brought me to this page from 2010…

Regarding OpenMaya API, I have never used it and I am finding it difficult to translate my existing knowledge of Maya Python commands to OpenMaya API. In the script, I attempt to do this in a somewhat clunky way (below) but maybe there is a more suitable approach using a set… # get the adjacent uvs

#Mesh unfolder demo how to#

I am wondering how to compare two selections of components (in my case, uvs) and remove one from the other. I have a related question (and perhaps a list variable could be a possible solution but I am not sure). In your script when you declare the ‘edgesToDelete’ variable, could I achieve the same thing as you by doing this? edgesToDelete = Can the info on this site be carried over to Python in Maya? Where do I find info about python variable types? A quick Google search brought me here…Īlthough it’s not directly related to Maya. I haven’t used this kind of variable before so I am not totally sure about how it works. I see that you are storing the edges to a list variable. Yeah I was wondering whether moving the delete outside of the loop would speed things up, but I never realized it would do so this much. Print('Execution time: %s seconds.'%(timeStop-timeStart)) # the user selects a set of uvs and runs the scriptĬmds.polyDelEdge( edgesToDelete, cv=False ) Using the OpenMaya API could potentially get it down drastically faster. If you collect the edges in a list, “edgesToDelete”, and then delete all the edges in one single command, the script executes in 0.26 seconds instead of 734 seconds. I was going to suggest OpenMaya API for faster speeds.īut the reason it is slow is because you’re running individual delete commands inside a loop, and the poly history is accumulating. Verts = cmds.polyListComponentConversion( uv1, uv2, toVertex=True )Įdge = cmds.polyListComponentConversion( verts, verts, toEdge=True, internal=True ) If abs( uv1Val - uv2Val ) > keepTol and abs( uv1Val - uv2Val ) > keepTol : # proceed to delete the edge between # if the first and second uvs don't match within a given tolerance Uv2Val = cmds.polyEditUV( uv2, query=True ) Uv1Val = cmds.polyEditUV( uv1, query=True )ĪdjEdges = cmds.polyListComponentConversion( uv1, toEdge=True )ĪdjUvs = cmds.polyListComponentConversion( adjEdges, toUV=True )ĪdjUvs = cmds.ls( selection=True, flatten=True ) UvSelection = cmds.ls( selection=True, flatten=True ) # defines a value to not delete an edge based on whether the u or v values of two uvs in question are within this threshold # the script deletes the edges causing triangles # the user selects a set of uvs and runs the script

Here is my script and a demo fbx file for testing. I am wondering whether ‘Select > Convert Selection > To UV Shell Border’ exists as a command? I have not been able to find it.

#Mesh unfolder demo series#

I am also having a hard time getting the UV shell border through a command (or series of commands). I’m not sure what’s going on here or if there is a way to speed this up. The problem is that the script runs super slowly. If they are not lined up, consider the edge between as an edge causing triangulation, then delete the edge.Īfter running the script on the UV selection shown above, the edges causing triangles are deleted. Check its neighbouring UVs as to whether they are lined up or not in UV space. My script goes like this: Iterate through each UV on the model. My guess is that ‘Mesh > Quadrangulate’ interprets the mesh in world space (not UV space, as I am trying to do). I tried doing ‘Mesh > Quadrangulate’ on a variety of meshes, but I found that this command was not reliable in all cases. My thinking was that since the triangles can already be easily identified visually at a glance on the UVs, the conversion to quads shouldn’t be too difficult. On the mesh UVs, the central portion of the mesh is laid out in a grid-like fashion, as seen in the image below.