MR renderer Properties

[HalfVector]

Probably you are trying to access to those properties directly through the mental_ray_renderer structure. The correct way shoud be:

renderers.current.Edge_Length
renderers.current.Max_Displace

This should work if the current renderer is Mental Ray:

if classOf renderers.current == mental_ray_renderer do (
-- Yeah, the current renderer is Mental Ray!
)

Greets.

[sethwolford]

Thanks that was the fix ! :)

I appreciate the quick response.

[sethwolford]

I almost have this script done but I have run into a small prob. I am trying to change the ".coord.V-tiling" value for the a mental ray custom attribute. This is the line the macro recorder gives me when I change it.

meditMaterials[1].mental_ray__material_custom_attribute[#Displacement][#map].coords.V_Tiling = -1.0

When I try to change the value by evaluating this line I get

"-- Unknown property: "coords" in undefined".

I cant find the property name for this. I was able to find it on the regular displacement but not for the mentalray custom attribute. I was looking in the maxscript help but I cant find it for the life of me.

I appreciate any help that anybody could give me on this.

[HalfVector]

Try this:

mEditMaterials[1].displacement.coords.v_tiling = -1.0

[sethwolford]

yeah I tried that one and I got

-- Unknown property: "coords" in Map #1:3D Displacement (3dsmax)

I am not sure if I can change coords on mental_ray_custom_attributes.displacement

I had no probs with regular displacement but this one is not working.

[HalfVector]

Ok, you applied a "3D Displacement" to the displacement map. And this kind of map doesn't have a property called "coords". That property is for 2D maps.

So what if you want is access to the coords property for the "Extrusion Map" (being this a 2D map), it should be:

mEditMaterials[1].displacement.map.coords.v_tiling

Anyway, you can use the function show to list the properties for MAX objects. For example:

show mEditMaterials[1].displacement

will output:

.objectIndependent ((null)) : boolean
.fullDisplaceLength ((null)) : worldUnits
.mapAmount ((null)) : float
.map ((null)) : texturemap
.directionStrength ((null)) : float
.direction ((null)) : texturemap
.mapAmount.connected ((null)) : boolean
.mapAmount.shader ((null)) : texturemap
.mapAmount.paramName ((null)) : string
.directionStrength.connected ((null)) : boolean
.directionStrength.shader ((null)) : texturemap
.directionStrength.paramName ((null)) : string
.TheList ((null)) : maxObject array
.Shader Version ((null)) : integer

and then:

show mEditMaterials[1].displacement.map

will output:

.soften : float
.color1 (Color_1) : RGB color
.color2 (Color_2) : RGB color
.map1 (Map_1) : texturemap
.map2 (Map_2) : texturemap
.map1Enabled (Map_1_Enable) : boolean
.map2Enabled (Map_2_Enable) : boolean
.coords (Coordinates) : maxObject

and so on...

The show function is very valuable. :)

Hope that helps.

[sethwolford]

That got it. I appreciate you showing me how to find it so that in the future I am more self sufficient :)

I am also going to credit you for the help since I would not have been able to finish this thing with out your help :)

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