Rotation of a BSDF material

grasshopper honeybee[+]
1

Hi All,
Is there any way to rotate the direction of a BSDF material based on a variable in HB+?
I assigned a BSDF material (shading) to a rotating surface, but it seems the direction of the material does not change by the rotation of the surface.
Now, I am wondering how to link the direction of the rotating surface with the direction of the material, constantly.

Thank you,

2

Hi Mohammad,

Always check the up vector for your window surface in the scene files. You can find useful information here:

Best,
Fazel

3

Hi @fazel.ganji !
Thank you for the answer.
The up-vector is set correctly for both of the window and the shading.
I am going to assign a BSDF shading material to a dynamic facade. The shading (the whole shading system, not the slats) has a constant pivotal rotation in front of the window surface. Something like this picture:

image
image596×704 14.9 KB

Now, I do not know how to define the rotation for the assigned BSDF material.
Not sure if up-vector can do this.

4

Hi @Mohammad
If you read the above post carefully, your solution is there too and altering the up vector will work for you.

Heads up! If you run 3-phase or 5-phase method: check both up vector definition in glw.rad file #@rfluxmtx h=kf u=-1.0,0.0,0.0 AND _up_vec_ input to set up the vector for BSDF material.

Before running each simulation you should overwrite the file first and then run.

Best, Fazel