Ex_PrintPosOfSelectedVerts.py

# python
#
# Author: Jeff LeRoy (extol) www.leroyfx.com
#
# Ex_PrintPosOfSelectedVerts.py v1.0
#
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# This is a exercise I did to understand working on a mesh when multiple mesh layers are selected.
# If you have vertices selected it will print the xyz position of every vertex. If you have multiple
# mesh layers selected it will still work and print out the info for each mesh layer.
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sel_meshes = lx.eval ('query sceneservice selection ? mesh') #how many mesh items selected
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sel_meshesType = type(sel_meshes) #check for the type of sel_meshes (string or tuple ?)

def printVertPos ():
    
    layerName = lx.eval ('query layerservice layer.name ?') #get the name of the layer
    sel_layerVertCount = lx.eval ('query layerservice verts ? selected')#get the list of INDIVIDUAL verts selected
    num_verts = lx.eval ('query layerservice vert.N ?') #how many TOTAL verts are selected

    lx.out ("on layer ",layerName) #print the layer name in event log
    lx.out ("selected verts :",sel_layerVertCount) #print a list of every vertex selected

    if num_verts > 0: #make sure something is selected
        if num_verts > 1: #if more than one vert selected
            for v in sel_layerVertCount:
                vPosition = lx.eval ('query layerservice vert.wpos ? %s,' % v)
                lx.out ("Vertex ",v)
                lx.out ("X ", vPosition[0])
                lx.out ("Y ", vPosition[1])
                lx.out ("Z ", vPosition[2])
        else: # if only one vert selected
            lx.out ("Vertex ",sel_layerVertCount)
            vPosition = lx.eval ('query layerservice vert.wpos ? %s,' % sel_layerVertCount)
            lx.out ("X ", vPosition[0])
            lx.out ("Y ", vPosition[1])
            lx.out ("Z ", vPosition[2])

if sel_meshesType is str: #if string (one mesh selected)
    printVertPos ()

elif sel_meshesType is tuple: #if tuple (multiple meshes selcted) so we need to loop through them
    for sel_mesh in sel_meshes:
        
        sel_MeshID = lx.eval ('query layerservice layer.index ? %s' % sel_mesh) #get/select current mesh layer to work on
        
        printVertPos ()