Set vertex colors to match materials

[Anonymous]

Basically, I would like to do the same exact thing as the assign vertex colors utility. Except I want to do it in maxscript so I can automate the process because I have a lot of files that need this procedure done.

Ideally I want to just access the assign vertex colors utility from maxscript. But there doesn't seem to be away to do this. I just need to figure out away to get the system to activate the "assign to selected" button. Is there a way to do this?

If not what set of functions should I investigate to get the vertex color to match the material color. The materials are all solid colors, so its nothing to complex (I hope) I just need to convert the colors for each objects material to its vertex colors.

Thanks

[Anonymous]

I think I might have found my solution

According to the maxscript guide:

This Interface lets you assign vertex colors to any number of nodes.
Methods:

<integer>ApplyNodes <node array>nodes 

vertexPaint default value: undefined
Assigns vertex colors to the specified nodes array.

however this is a little different format from what im used to when I write my script, can somebody tell me how to utilize this?

[Steve_Curley]

Like all the function definitions in the Maxscript help, that is a generic description of the return type and value, the function name and the the number and type of parameters required.

It would appear to be little more than a function which adds a Vertex Paint Modifier to the node(s) provided and opens the Edit dialog (as if you had clicked the Edit button on an existing modifier).

I've not played with vertex colours (in maxscript) but I suspect you'll have to deal with the modifier directly in order to set the actual vertex colours.

[Anonymous]

feel free to use this small script I wrote a while back.
It requires that the materials be standard materials.
If the materials has a diffuse texture then the average color of that texture is used, and if not, the diffuse color is used.

try(destroydialog solidCols)catch()

fn SetAvgColor o=
(
 if o.material.diffuseMap!=undefined then
 (
 local cols=#()
 local theBMP=rendermap o.material.diffuseMap
 local chan=o.material.diffuseMap.coords.mapChannel
 local theMesh=copy o.mesh
 local getMV=meshop.getMapVert
 for i = 1 to (meshop.getnummapverts theMesh chan) do 
 (
 local UVvert=getMV theMesh chan i
 local thecoords= 1)*(theBMP.width-1),(1-(mod UVvert 1))*(theBMP.height-1)]
 local thePix=getPixels theBMP thecoords 1
 append cols thePix
 )
 delete theMesh
 local sum=black
 for c = 1 to cols.count do sum+=cols
 sum=sum/cols.count
 )
 else sum = o.material.diffuse
 with redraw off
 (
 max modify mode
 select o
 if (classof o.modifiers==unwrap_UVW) and (o.modifiers.getVC()) then (local UVmod=o.modifiers) else 
 (
 local UVmod=unwrap_UVW()
 addModifier o UVmod
 ) 
 UVmod.setVC true
 local setVP=UVmod.setVertexPosition
 for v = 1 to UVmod.numberVertices() do UVmod.setVertexPosition currentTime v ((sum as point3)/255)
 )
)

rollout solidCols "Block colors"
(
 button convertIt "Convert selected to solid"
 
 on convertIt pressed do if selection.count>0 do undo "Convert to solid" on 
 (
 t1 = timestamp()
 m1 = heapfree
 setWaitCursor()
 local VCMat=standardmaterial diffusemap:(vertexColor())
 local sel = selection as array
 for o in sel where (classof o.material==standardmaterial) do 
 (
 SetAvgColor o
 o.material=VCMat
 )
 setArrowCursor()
 format "time:% leak:%\n" (timestamp() - t1) (m1 - heapfree)
 )
)
createDialog solidCols

[Anonymous]

thanks that helped out a lot