Ex_Select_Visible_Meshes.py

# python
#
# Author: Jeff LeRoy (extol) www.leroyfx.com
#
# Ex_Select_Visible_Meshes.py v1.3
#
#------------------------------------------------------------------------------------------------
#--TO_USE-----------------------------------------------------------------------------------------
#
#  The purpose of this mesh is to select the visible meshes in the scene (main or bg). if you use
#  the arg "selectmeshes" it will select all meshes in the scene wether they are hidden or not
#
#------------------------------------------------------------------------------------------------
#--TO_DO-----------------------------------------------------------------------------------------
# 
# 
#------------------------------------------------------------------------------------------------
#--VAR-------------------------------------------------------------------------------------------
num_Layers = lx.eval ('query layerservice layer.N ? all') #get number of mesh layers
L_Layers = lx.eval ('query layerservice layers ?') #get list of all mesh layers
L_visibleLayers = []#list of layers to select
args = lx.arg()
selMode = lx.eval ('query layerservice selmode ?')#get current selection mode
highlightedMeshes = lx.eval ('query sceneservice selection ? mesh')#get the name of mesh layers that are highlighted
#------------------------------------------------------------------------------------------------
#--CODE------------------------------------------------------------------------------------------

if num_Layers > 1:
    
    sel_meshType = type(highlightedMeshes)
    lx.eval ('select.drop item') #drop selection 
    
    def selectAll():
        for i in L_Layers:
            lx.eval ('select.layer %s add' % i)
        
    def selectAllVisible():
#--------------Checking for current mesh selection and adding it to the selection list
#--------------(if a mesh layer is highlighted but the visibility "eye" is not on)
        
        if sel_meshType is str:#only one mesh item is selected
            highlightedIndex = lx.eval ('query layerservice layer.index ? %s' % highlightedMeshes)#get the index of the mesh that is highlighted
            L_visibleLayers.append (highlightedIndex)#add that mesh to the select list
        elif sel_meshType is tuple:#sel_meshType not a string so multiple meshes must be selected
            for i in highlightedMeshes:#For every mesh in highlighted list
                highlightedIndex = lx.eval ('query layerservice layer.index ? %s' % i)#get the index of the meshes that are highlighted
                L_visibleLayers.append (highlightedIndex)#add that mesh to the select list


#--------------Adding all layers with visibility "eye" on to the selection list
        
        for i in L_Layers:
            visibility = lx.eval('query layerservice layer.visible ? %s' % i)#get the visibility of the mesh (main,fg,bg,none)
            if visibility != "none" and i not in L_visibleLayers:#if layer is "bg" "main" or "fg" and not already in the select list
                L_visibleLayers.append (i)#add it to the select list


#--------------Select all the mesh layers in the selection list
        
        for i in L_visibleLayers:#for every mesh in list
            lx.eval ('select.layer %s add' % i)#select that mesh
    
    if args == "selectmeshes":
        selectAll()
        
    else:
        selectAllVisible()
        
    lx.eval ('select.typeFrom %s' % selMode) #restore selection mode
    
#------------------------------------------------------------------------------------------------
#--UPDATES---------------------------------------------------------------------------------------
# v1.3
# added code to select highlighted meshes that dont have the visibility "eye" turned on
# v1.2
# fixed code so it doesnt ignore layers that are in the fg. it also drops selction first incase
# a camera or something is selected.
# v1.1
# Added the argument selectAllVisible so it will only select mesh that are visible in the viewport
#------------------------------------------------------------------------------------------------
#------------------------------------------------------------------------------------------------