How Do I Select a Face of an Editable Mesh by its Index?

MAXScript Frequently Asked Questions

A user asked:

Is there a way to select a face in an editable mesh when you only know its index?

Answer:

When doing it just once, you can quickly type in the Listener something like

setFaceSelection $ {10}

This will select face with index 10 assuming that a single object is selected and it is an Editable_Mesh.

If you are doing this very often, the following macroScript provides a UI with a spinner to select the face index and some error handling:

Script:

macroScript FaceByIndex category:"MXS Help"

(

global SelectFaceRoll

try(destroyDialog SelectFaceRoll)catch()

rollout SelectFaceRoll "Select Face"

(

spinner face_index "Face Index" type:#integer range:[1,100000000,1]

on face_index changed val do

(

if isValidNode selection[1] and classof selection[1].baseobject == Editable_Mesh do

(

if val <= selection[1].numfaces then

setFaceSelection selection[1] #{val}

else   

setFaceSelection selection[1] #{}

)

) 

)

max modify mode

try(subObjectLevel = 3)catch()

createDialog SelectFaceRoll 150 30

)--end macro

See also

Mesh Face Methods

Frequently Asked Questions