honeybee_plus.radiance.material.prism1 module¶

Radiance Prism1 Material.

http://radsite.lbl.gov/radiance/refer/ray.html#Prism1

class honeybee_plus.radiance.material.prism1.Prism1(name, modifier=None, values=None, is_opaque=None)[source]¶

Bases: honeybee_plus.radiance.material.materialbase.RadianceMaterial

Radiance Prism1 Material.

The prism1 material is for general light redirection from prismatic glazings, generating virtual light sources. It can only be used to modify a planar surface (i.e., a polygon or disk) and should not result in either light concentration or scattering. The new direction of the ray can be on either side of the material, and the definitions must have the correct bidirectional properties to work properly with virtual light sources. The arguments give the coefficient for the redirected light and its direction.

mod prism1 id 5+ coef dx dy dz funcfile transform 0 n A1 A2 .. An

The new direction variables dx, dy and dz need not produce a normalized vector. For convenience, the variables DxA, DyA and DzA are defined as the normalized direction to the target light source.