Unwrapping multiple objects using maxscript
polycounter lvl 6
Hi guys,
I'm having some trouble creating a script with which I can unwrap multiple objects that share the same UV layout. I can achieve it all by hand, but I want to automate it for future use.
I can create a script that flattens per object in the selection, but I want to use FlatIron for packing. And when you flatten objects individually, the elements don't get sized reletive to each other when FlatIron packs them all together.
I tried flatten the objects without normalising enabled so they assume worldspace coordinates (or something like it, they extend very far beyond the boundaries), but that also doesn't generate usable uv's when packing it with FlatIron.
By hand I would do it like this: select all object that I want to share uv's, apply uvw unwrap modifier, open editor, select all faces, flatten quick and dirty, collapse modifier, open FlatIron, pack existing uv's and collapse. That's basicly what I want to do by script. But for some reason it's not very simple to do it seams.
I'm having some trouble creating a script with which I can unwrap multiple objects that share the same UV layout. I can achieve it all by hand, but I want to automate it for future use.
I can create a script that flattens per object in the selection, but I want to use FlatIron for packing. And when you flatten objects individually, the elements don't get sized reletive to each other when FlatIron packs them all together.
I tried flatten the objects without normalising enabled so they assume worldspace coordinates (or something like it, they extend very far beyond the boundaries), but that also doesn't generate usable uv's when packing it with FlatIron.
By hand I would do it like this: select all object that I want to share uv's, apply uvw unwrap modifier, open editor, select all faces, flatten quick and dirty, collapse modifier, open FlatIron, pack existing uv's and collapse. That's basicly what I want to do by script. But for some reason it's not very simple to do it seams.
Replies
for whoever is interested, here's how it works:
/*-------------------------------------------------------------- OPTIO_batch_unwrapper Unwraps selection with semi-default settings. If you have flatIron installed you can use that to create a decent packed map. v0.4 - Actually fixed the incorrect unwrapping of multiple selected objects that shared the same uv space ... - ...and in the process simplified the logic a bit. - Added individual FlatIron packing per object for quickly unwrapping objects v0.3 - Fixed the incorrect unwrapping of multiple selected objects that need to share the same uv space. v0.2 - Added support RTT element sizes v 0.1 - Initial version -------------------------------------------------------------*/ try destroydialog uvToolRollout catch() struct UnwrapSettings ( public myChannel = 2, myWidth = 256, myHeight = 256, myAngle = 45.0, seePreview = false, asGroup = false, useRttElementSize = true, fn SetSettings useChannel texWidth texHeight faceAngle showPreview packAsGroup useRttSizes = ( myChannel = useChannel myWidth = texWidth myHeight = texHeight myAngle = faceAngle seePreview = showPreview asGroup = packAsGroup useRttElementSize = useRttSizes ) ) global theSettings = UnwrapSettings() fn UnwrapIt doFlatIron doCollapse =( if doFlatIron == true then ( Flatiron.unwrap_mode = 2 -- 0 = organic, 1 = hard surface, 2 = pack existing, 3 = keep existing Flatiron.map_channel = theSettings.myChannel Flatiron.stretch = 0.05 Flatiron.width = theSettings.myWidth Flatiron.height = theSettings.myHeight Flatiron.padding = 4 FlatIron.preview = theSettings.seePreview Flatiron.source_channel = theSettings.myChannel Flatiron.bake_mode = 1 -- 0 = Multi Pass baking, 1 = Single Pass baking ) myObjects = selection as array myObjectCount = myObjects.count myNormals = #([1,0,0], [-1,0,0], [0,1,0], [0,-1,0], [0,0,1], [0,0,-1]) max modify mode if myObjectCount > 0 then ( for i = 1 to myObjectCount do ( myObject = myObjects[i] select myObject addModifier myObject (UVW_Mapping_Clear ()) myObject.modifiers[#UVW_Mapping_Clear].mapID = theSettings.myChannel myPolygons = #{} polyop.setFaceSelection myObject myPolygons addModifier myObject (Unwrap_UVW()) unwrap = myObject.modifiers[#unwrap_uvw] unwrap.unwrap.setMapChannel theSettings.myChannel if theSettings.asGroup == true do unwrap.unwrap2.flattenMap theSettings.myAngle myNormals 0.002 false 0 true true if theSettings.asGroup == false do ( unwrap.unwrap2.flattenMap theSettings.myAngle myNormals 0.002 true 0 true true unwrap.unwrap2.pack 0 0.002 true true true ) if doCollapse == true then ConvertTo myObject Editable_Poly ) if doFlatIron == true then ( if theSettings.useRttElementSize == true then ( if theSettings.asGroup == true then ( -- collect the rtt element map size from the selection currSizes = #() for i = 1 to myObjectCount do ( myObject = myObjects[i] rttelement = myObject.INodeBakeProperties.getBakeElement 1 if rttelement != undefined then append currSizes rttelement.outputszx ) -- get the largest map size from objects sort currSizes -- sort it out -- get the last one, which is the biggest if currSizes.count > 0 then ( Flatiron.width = currSizes[currSizes.count] Flatiron.height = currSizes[currSizes.count] ) select myObjects print "Baking selected group" Flatiron.unwrap "unnamed" if doCollapse == true then ConvertTo $ Editable_Poly ) else ( for i = 1 to myObjectCount do ( myObject = myObjects[i] rttelement = myObject.INodeBakeProperties.getBakeElement 1 if rttelement != undefined then ( Flatiron.width = rttelement.outputszx Flatiron.height = rttelement.outputszy ) print ("Baking " + myObject.name + " with RTT sizes") select myObject Flatiron.unwrap "unnamed" if doCollapse == true then ConvertTo $ Editable_Poly ) ) ) else ( for i = 1 to myObjectCount do ( myObject = myObjects[i] print ("Baking " + myObject.name + " without RTT sizes") select myObject Flatiron.unwrap "unnamed" if doCollapse == true then ConvertTo $ Editable_Poly ) ) ) ) myObjects = undefined clearselection() ) rollout uvToolRollout "UV Batch Packer" ( group "FlatIron parameters" ( checkbox useFlatIron "Pack with FlatIron" checked: (try (if FlatIron != undefined then true) catch ( false ) ) checkbox useRttSizes "Use size of RTT element" checked:true tooltip:"This ignores the width and height settings below" spinner texWidth "Width: \t\t\t" type:#integer range:[128,8192,1024] align:#left enabled:(try not useRttSizes.checked catch false) spinner texHeight "Heigth:\t\t\t" type:#integer range:[128,8192,1024] align:#left enabled:(try not useRttSizes.checked catch false) checkbox showPreview "Show FlatIron preview" checked:(try FlatIron.preview catch false) tooltip:"Opens the preview from FlatIron. Can open a lot of windows if selection not packed as a group" button unwrapSelected "Only unwrap selected" width:140 height:50 align:#center on useFlatIron changed state do ( texWidth.enabled = state texHeight.enabled = state useRttSizes.enabled = state showPreview.enabled = state keepTheSeams.enabled = state if state == true then ( texWidth.enabled = not state texHeight.enabled = not state ) ) on useRttSizes changed state do ( texWidth.enabled = not state texHeight.enabled = not state theSettings.useRttElementSize = state ) on showPreview changed state do ( theSettings.seePreview = state FlatIron.preview = state ) on packAsGroup changed state do theSettings.asGroup = state on unwrapSelected pressed do ( Flatiron.unwrap_mode = 1 myObjects = selection as array for i = 1 to myObjectCount do ( myObject = myObjects[i] rttelement = myObject.INodeBakeProperties.getBakeElement 1 if rttelement != undefined then ( Flatiron.width = rttelement.outputszx Flatiron.height = rttelement.outputszy ) Flatiron.padding = (myObject.INodeBakeProperties.ndilations * 2) print ("Baking " + myObject.name) select myObject Flatiron.unwrap "unnamed" if doCollapse == true then ConvertTo $ Editable_Poly ) ) ) group "Options" ( checkbox packAsGroup "Pack selection as group" checked:true tooltip:"This picks the largest map size from the selected objects" spinner useChannel "UV channel:\t" type:#integer range:[1,999,2] align:#left spinner faceAngle "Face angle:\t" type:#float range:[0,180,30] align:#left checkbox collapseTo "Collapse when done" align:#left checked:true ) /*on showThePreview changed state do ( print state if state == true then ( modPanel.addModToSelection (Unwrap_UVW ()) ui:on $.unwrap_uvw.unwrap.setMapChannel theSettings.myChannel modPanel.setCurrentObject $.unwrap_uvw $.modifiers[#unwrap_uvw].unwrap.edit() ) else ( if $.modifiers[#unwrap_uvw] != undefined do deleteModifier $ 1 ) )*/ button doTheThing "Unwrap and pack selection" width:150 height:50 align:#center on doTheThing pressed do ( theSettings.myWidth = texWidth.value theSettings.myHeight = texHeight.value theSettings.myChannel = useChannel.value theSettings.myAngle = faceAngle.value UnwrapIt useFlatIron.checked collapseTo.checked ) on uvToolRollout open do theSettings.SetSettings useChannel.value texWidth.value texHeight.value faceAngle.value showPreview.checked packAsGroup.checked useRttSizes.checked group "About"( label lbl1 "v0.4" ) ) createdialog uvToolRollout