Creating a new material?

[marie...@gmail.com]

I have a cylinder I created with polyCylinder which I'd like to assign
a color to (no texture, just a color). I figured I had to create a new
material first since I'd like to create many such polygons with a
different color each. Then I'd connect it to the polygon and modify
the color.

The problem is that I'm stuck at 'creating a new material', I can't
find anything like this in the documentation (or maybe I'm just not
understanding).

Any help?

P.S.: I'm stuck on Maya 8.5, this is all the school have licensed.

Thanks

[Sylvain Berger]

here is a few function that should get you going:

in short, you create a shader and a shading group, connect the shader to the shading group

Then connecting an object or polygon face(s) to the set will assign the shader to the objects/faces

good luck

import maya.cmds as mc

""" create a new shader """

def createShader(shaderType='lambert', name=''):

if name == '':

name = shaderType

name = mc.shadingNode(shaderType, asShader=True,  name=name)

sg = mc.sets(renderable=True, noSurfaceShader=True, empty=True, name='%sSG' %(name))

# connect shader to SG

shaderOutput = 'outValue'

if shaderType== 'mia_material' or shaderType == 'mia_material_x':

if shaderType == 'mia_material_x':

shaderOutput = "result";

mc.connectAttr('%s.%s' %(name,shaderOutput), '%s.miMaterialShader' %(sg), force=True)

mc.connectAttr('%s.%s' %(name,shaderOutput), '%s.miShadowShader' %(sg), force=True)

mc.connectAttr('%s.%s' %(name,shaderOutput), '%s.miPhotonShader' %(sg), force=True)

else:

mc.connectAttr('%s.outColor' %(name), '%s.surfaceShader' %(sg), force=True)

return [name, sg]

def assignToShader(shaderSG=None, objects=None):

# assign selection to the shader

if objects is None:

objects = mc.ls(sl=True, l=True)

for i in objects:

print i

try:

mc.sets(i, e=True, forceElement=shaderSG)

except:

pass

"""

Example:

# run the next line

shader, shaderSG = createShader('blinn', 'foobar')

# SELECT SOME OBJECTS

# run the next line to assign the selected object to the shader

assignToShader(shaderSG)

--
They say, "Evil prevails when good men fail to act." What they ought to say is, "Evil prevails."
Nicolas Cage as Yuri Orlov in Lord of War.

[amala...@gmail.com]

How can I change an Attribute value of that shader?? for example if I want to change the diffuse value to .1 withing the script. how I can do that.?