-ae with alias modifiers?

radiance-general
1

Hi!

Can I use -ae of rpict with an alias modifier? I have two layers of modifiers here, one by object type, one by material. So e.g. I have a bunch of objects that get modified by "marble_edgings", and later, I use "void alias marble_edgings marble_grey_1" to assign these objects their actual material. Now I want to exclude them from the ambient calculation (as you can see by the name, these edgings are not really important, they are small-surface objects). Can I use -ae marble_edgings, which is the alias, or do I have to use -ae marble_grey_1, which is the (plastic) modifier?

TIA+CU, Lars.

(Yes, I tried with rvu, but didn't notice a big difference, that's why I have to ask now :wink:

2

Hi Lars,

You need to use the name of the material that actually gets assigned to the geometry. In other words:

void plastic red
...

void alias mat_to_geometry_name red

mat_to_geometry_name sphere obj.sphere
0
4 0 0 0 1

to exclude the material applied to obj.sphere you would use:

-ae mat_to_geometry_name

Hope this makes sense.

-Jack

Lars O. Grobe wrote:

ยทยทยท

Hi!

Can I use -ae of rpict with an alias modifier? I have two layers of modifiers here, one by object type, one by material. So e.g. I have a bunch of objects that get modified by "marble_edgings", and later, I use "void alias marble_edgings marble_grey_1" to assign these objects their actual material. Now I want to exclude them from the ambient calculation (as you can see by the name, these edgings are not really important, they are small-surface objects). Can I use -ae marble_edgings, which is the alias, or do I have to use -ae marble_grey_1, which is the (plastic) modifier?

TIA+CU, Lars.

(Yes, I tried with rvu, but didn't notice a big difference, that's why I have to ask now :wink:

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3

You need to use the name of the material that actually gets assigned to the geometry. In other words:
[...]
Hope this makes sense.

Hi Jack,

yes, that MAKES sense, as one usually decides to exclude the material because of the geometry, not the material. Great, that way I can use this.

Thank you! CU Lars.