Texfunc Material

Hell,

I am exploring Radiance materials on Honeybee.

I would like to simulate half transparent materials like cloth and poly carbonate.

Dose anyone know how to do it?

I read the article about mixfunc (here) and tried same process but I couldn't add texfunc material on honeybee library.

Material I made is below;

void texfunc gran_tex
4 gran_dx gran_dy gran_dz C:\Radiance\lib\plink.cal
0
0
gran_tex glass granular_glass_6
0
0
3 0.982 1.0 0.987

and the result I get is ;

1. Solution exception:Invalid integer literal

Attachments:

Canvas at 01;31;10.png, 42 KB

Replies are closed for this discussion.

Replies to This Discussion

Permalink Reply by Ryosuke Maruyama on May 26, 2015 at 8:32am

any ideas?

Permalink Reply by Chris Mackey on May 27, 2015 at 3:29pm

Ryosuke,

Mostapha would know more about this issue than I would but I can tell you from the error message that HB is does not seem to be built to read material types that are longer than 4 lines right now. I am sorry that is not so helpful. Is there a reason why you could not model your material with the "Radiance Trans Material"?

-Chris

Permalink Reply by Sarith Subramaniam on May 28, 2015 at 1:06pm

I think you are getting an error because your material has 'strings' in it. I looked into the Honeybee source code and found this line:

while counter < len(materialProp):
counter += int(materialProp[counter]) + 1

The int(materialProp[counter]) requires that the materialProp[counter] be a number. Simple radiance materials are usually of the format ... void plastic box 0 0 5 0.5 0.5 0.5 0.2 0.1 . So everything after the 'box' is a number and the code works fine.

If you have a complex materials with terms like 'grand_dx' 'gran_dy' etc, the Honeybee code will crash as it tries to convert text to numbers. However, I think there should be a workaround. Can you share the gh file for your project ?

Permalink Reply by Ryosuke Maruyama on May 30, 2015 at 3:15am

>Chris

Thank you for your replay. I would like to simulate a material like attached image.

>Sarith

Thank you for your replay.

I attached my definition. Please check it this.

Attachments:

materialtest.gh, 68 KB

Permalink Reply by Sarith Subramaniam on May 30, 2015 at 12:33pm

I am not sure if you can add a complex material to Honeybee library. However, I might be completely off as I don't have enough experience with it.

If you are comfortable scripting directly into a rad file and using radiance then you can make it work. I tried some very basic renderings with your material...( I did not change any parameters). See below. The ones with the grainy images are with the texfunc modifier.

Permalink Reply by Mostapha Sadeghipour Roudsari on June 12, 2015 at 11:53pm

Hi Ryosuke, Honeybee material parser currently doesn't support materials with modifiers. I added an issue to fix this soon (https://github.com/mostaphaRoudsari/Honeybee/issues/354).

Permalink Reply by Mostapha Sadeghipour Roudsari on November 1, 2015 at 9:52am

This is fixed!