Here is all what you need to swap texture channels.
fn copyChannel node type:3 targetChannel: sourceChannel: clear:off =
(
if meshop.getMapSupport node.mesh targetChannel do
(
if sourceChannel == #new do
(
ChannelInfo.AddChannel node
sourceChannel = (meshop.getnummaps node.mesh) - 1
node.modifiers[1].name = "add CH(" + sourceChannel as string + ")"
)
ChannelInfo.CopyChannel node type targetChannel
ChannelInfo.PasteChannel node type sourceChannel
node.modifiers[1].name = "copy CH(" + targetChannel as string + ")->" + "CH(" + sourceChannel as string + ")"
if clear do
(
ChannelInfo.ClearChannel node targetChannel
node.modifiers[1].name = "clear CH(" + targetChannel as string + ")"
)
sourceChannel
)
)
mapped fn swapChannels node ch_a ch_b collapse:off =
(
if iskindof node GeometryClass and not iskindof node Targetobject do
(
-- suspendEditing()
tempChannel = copyChannel node targetChannel:ch_a sourceChannel:#new
copyChannel node targetChannel:ch_b sourceChannel:ch_a
copyChannel node targetChannel:tempChannel sourceChannel:ch_b clear:on
if collapse do collapsestack node
-- resumeEditing()
)
)
/*
--EXAMPLE 1 -- swap illum channel (-1) and vertex color channel (0) with no collapse for selected geometry nodes:
(
swapChannels $ -1 0 collapse:off
)
*/
/*
--EXAMPLE 2 -- swap illum channel (-1) and vertex color channel (0) with collapse for all geometry node in scene:
(
swapChannels (geometry as array) -1 0 collapse:on
)
*/
in the swapChannels function "suspend" and "resume" editing are commented. You can use "suspend - resume" option for a final version, but it doesn't really make sense for multi nodes editing.
This is how to swap channels in the current scene. For multiple scenes you need to make a "batch" script. But before that, you must provide the rule for which nodes you need “channel swapping”. The script should use this rule to search for processing nodes.
