topic Re: Animate edit poly modifier verts in 3ds Max Programming Forum

Animate edit poly modifier verts

danlane3d — Thu, 10 Jul 2025 07:34:10 GMT

Hi,

How do animate verts in an editpoly modifier with maxscript? My current attempt doesn't set keys even if I set the modifier to animate mode and also wrap it all within an on animate context.

Here's my code so far, it matches the vert positions of one object to another but I'd like it to animate the verts:

sourceobj = selection[1] modifyObject = selection[2] storedVertPositions = #() vertCount = polyop.getNumVerts sourceobj print vertCount -- Cache vertex positions in world space for i = 1 to vertCount do ( pos = polyop.getVert sourceobj i --append storedVertPositions #(i, pos) append storedVertPositions pos ) -- add epoly to modified mesh ePolyMod = undefined --Edit_Poly () for modify in modifyObject.modifiers where modify.name == "Edit Poly" do ePolyMod = modify select modifyObject max modify mode modPanel.setCurrentObject ePolyMod ePolyMod.enabled = true subobjectLevel = 1 ePolyMod.useSoftSel = off ePolyMod.SetSelection #Vertex #{} ePolyMod.animationMode = true for i = 1 to vertCount do ( sourcePos = storedVertPositions[i] currentPos = polyop.getVert modifyObject i diffVector = sourcePos - currentPos with animate on( at time 100 ( modifyObject.modifiers[#Edit_Poly].Select #Vertex #{i} modifyObject.modifiers[#Edit_Poly].MoveSelection diffVector modifyObject.modifiers[#Edit_Poly].Commit() modifyObject.modifiers[#Edit_Poly].SetSelection #Vertex #{} ) ) )

Thanks for reading 🙂

Cheers

Re: Animate edit poly modifier verts

A娘 — Thu, 10 Jul 2025 08:49:38 GMT

for modifier animation， you should use slidertime instead of at time

and you should use setvert method instead of what you did

Re: Animate edit poly modifier verts

danlane3d — Fri, 11 Jul 2025 23:52:47 GMT

Thanks, I'll give that a try.

Re: Animate edit poly modifier verts

danlane3d — Fri, 11 Jul 2025 23:59:29 GMT

I don't think there is a setvert method in the edit poly modifier.

Re: Animate edit poly modifier verts

A娘 — Sat, 12 Jul 2025 04:09:48 GMT

of course it has , you can't get all interfaces from maxscript reference , just show modifier , and you can see what methods it has

Re: Animate edit poly modifier verts

danlane3d — Tue, 15 Jul 2025 04:18:57 GMT

Well of course 😄

Thanks for the tip, I'll inspect it's methods.