Diffuse Map to Vertex color? MAX

cupsster · Sep 2011

Hi all,
please can anyone advice me how to transfer color of diffuse map to vertex colors?
Tryed this: http://www.polycount.com/forum/showthread.php?t=70981&highlight=diffuse+vertex+color not working for me.

Is there any script for this? I must use old tech...

Thank you.

cupsster · Sep 2011

if rol_ColorBakerProgress!=undefined do destroyDialog rol_ColorBakerProgress
rollout rol_ColorBakerProgress "Baking Progress" width:190 height:48
(
label lbl_Text "Baking Texture into Vertices:" pos:[20,7] width:150 height:13
progressBar pb1_Progress "ProgressBar" pos:[6,21] width:180 height:20

)
----
----
fn IOI_ColorBakerBakeTexture targetObj=
(
--	targetObj=$
converttoPoly targetObj --NOTE
baseObject=targetObj.baseObject
theBitmap=targetObj.material.diffusemap.bitmap
theBitmapW=theBitmap.width-1
theBitmapH=theBitmap.height-1


vertNum=polyOp.getNumVerts baseObject
fnGetMapvert=polyOp.getMapVert
fnsetVertColor=polyOp.setVertColor
fnsetVertData=polyOp.setVDataValue

createDialog rol_ColorBakerProgress
pbl_Progress=rol_ColorBakerProgress.pb1_Progress
for iVert=1 to vertNum do
(
mapPos=fnGetMapvert baseObject 1 iVert

mapPos[1]=mod (mapPos[1]) 1
mapPos[2]=mod (mapPos[2]) 1
bitmapPos=[(mapPos[1]*theBitmapW) as integer, (mapPos[2]*theBitmapH) as integer]	
if bitmapPos[1]<0 do bitmapPos[1]+=theBitmapW
if bitmapPos[2]<0 do bitmapPos[2]+=theBitmapH
multiW= ceil (bitmapPos[1]/theBitmapW) 
if multiW > 1 do bitmapPos[1]=bitmapPos[1]-theBitmapW*(multiW-1)

multiH= ceil (bitmapPos[2]/theBitmapH) 
if multiH > 1 do bitmapPos[2]=bitmapPos[2]-theBitmapH*(multiH-1)	
bitMapPos[2]=theBitmapH-bitMapPos[2] --theBitmapW-bitMapPos[1], 

mapColor= (getPixels theBitmap bitmapPos 1)[1]
fnsetVertColor baseObject 0 #{iVert} mapColor --PERFORMANCE This is VERY slow. 10sec on 4000 object.

Progress=(iVert/(vertNum as float))*100
if pbl_Progress.value!=Progress do pbl_Progress.value=Progress
)
addModifier targetObj (VertexPaint())
max modify mode
destroyDialog rol_ColorBakerProgress

targetObj.showVertexColors =true
)
IOI_ColorBakerBakeTexture $

CREDIT

nezach · Sep 2011

There's an 'Assign Vertex Color' tool in the utilities tab that can do that without the need for scripts.

Eric Chadwick · Sep 2011

Max will not display vertex colors in the viewport by default. You have to force it, in Object Properties, via Vertex Channel Display. Or you can use a DirectX shader that supports vertex color.

cupsster · Sep 2011

@EricChadwick: yep, I know that

standard material > diffuse slot > vertex color map
or
object properties > display vertex colors

@nezach: anyway this script works... max assign vertex colors don't.. so who wins? :P

Noors · Sep 2011

yeah most of the time i'm not able to assign the vertex color from the diffuse either. Sometimes it weirdly works after checking/unchecking some options but as i'm not considering myself as a max noob, my bet is : it's pretty buggy.

cupsster · Sep 2011

so good news for you Noors

this works 100% sure, just second before I decided to script it myself google revealed this to me.. I'm pretty happy cause for time it will be crucial part of my workflow..

Bruno Afonseca · Sep 2011

TexTools has a button that does it!
http://www.renderhjs.net/textools/

nezach · Sep 2011

cupsster wrote: »

@nezach: anyway this script works... max assign vertex colors don't.. so who wins? :P

You get no diffuse colors to the vertices from using it at all? It works for me so I guess I 'win' at that. /shrug

cupsster · Sep 2011

thanx for pointing that out.. i'm using it but was unaware of this feature..

cupsster · Sep 2011

No, never worked for me except maybe 4 years back when I was experimenting with it..

Diffuse Map to Vertex color? MAX

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