honeybee_radiance.modifier.material.dielectric module

Radiance Dielectric Material.

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

class honeybee_radiance.modifier.material.dielectric.Dielectric(identifier, modifier=None, values=None, is_opaque=None, dependencies=None)[source]

Bases: Material

Radiance Dielectric Material.

A dielectric material is transparent, and it refracts light as well as reflecting it. Its behavior is determined by the index of refraction and transmission coefficient in each wavelength band per unit length. Common glass has a index of refraction (n) around 1.5, and a transmission coefficient of roughly 0.92 over an inch. An additional number, the Hartmann constant, describes how the index of refraction changes as a function of wavelength. It is usually zero. (A pattern modifies only the refracted value.)

mod dielectric id
0
0
5 rtn gtn btn n hc
Parameters:

  • identifier – Text string for a unique Material ID. Must not contain spaces or special characters. This will be used to identify the object across a model and in the exported Radiance files.

  • modifier – Modifier. It can be primitive, mixture, texture or pattern. (Default: None).

  • values – An array 3 arrays for primitive data. Each of the 3 sub-arrays refer to a line number in the radiance primitive definitions and the values in each array correspond to values occurring within each line.

  • is_opaque – A boolean to indicate whether this primitive is opaque.

  • dependencies – A list of primitives that this primitive depends on. This argument is only useful for defining advanced primitives that are defined based on other primitives. (Default: []).

Properties:

  • identifier

  • display_name

  • values

  • modifier

  • dependencies

  • is_modifier

  • is_material

  • is_opaque

ToString()

Overwrite .NET ToString.

add_dependent(dep)

Add dependent.

duplicate()

Get a copy of this object.

static filter_dict_input(input_dict)

Filter a dictionary of a Primitive to get modifier and dependency objects.

classmethod from_dict(data)

Initialize the object from a dictionary.

Parameters:

data – A dictionary in the format below.

{
"modifier": {},  # primitive modifier (Default: None)
"type": "",  # lowercase string for the primitive type
"identifier": "",  # primitive identifier
"display_name": "",  # primitive display name
"values": [],  # values
"dependencies": []
}
classmethod from_primitive_dict(primitive_dict)

Initialize the object from a primitive dict.

The primitive_dict is a dictionary following the base Primitive schema of a Radiance object. This base Primitive schema is the same for all Radiance Primitives (including Modifiers and Geometry) whereas the from_dict classmethod accepts a different schema that is customized to each subclass inheriting from the Radiance Primitive.

Parameters:

data – A dictionary in the format below

{
"modifier": {},  # primitive modifier (Default: None)
"type": "",  # lowercase string for the primitive type
"identifier": "",  # primitive identifier
"display_name": "",  # primitive display name
"values": [],  # values
"dependencies": []
}
classmethod from_string(primitive_string)

Create a Radiance primitive from a string.

If the primitive modifier is not void or it has other dependencies, the modifier and/or dependencies must also be part of the input string.

lock()
to_dict()

Translate this object to a dictionary.

to_radiance(minimal=False, include_modifier=True, include_dependencies=True)

Return full radiance definition.

Parameters:

  • minimal – Boolean to note whether the radiance string should be written in a minimal format (with spaces instead of line breaks). Default: False.

  • include_modifier – Boolean to note whether the modifier of this primitive should be included in the string. Default: True.

  • include_dependencies – Boolean to note whether the dependencies of this primitive should be included in the string. Default: True.

unlock()
GEOMETRYTYPES = {'bubble', 'cone', 'cup', 'cylinder', 'instance', 'mesh', 'polygon', 'ring', 'source', 'sphere', 'tube'}
MATERIALTYPES = {'BRTDfunc', 'BSDF', 'aBSDF', 'antimatter', 'ashik2', 'dielectric', 'glass', 'glow', 'illum', 'interface', 'light', 'metal', 'metal2', 'metdata', 'metfunc', 'mirror', 'mist', 'mixedfunc', 'plasdata', 'plasfunc', 'plastic', 'plastic2', 'prism1', 'prism2', 'spotlight', 'trans', 'trans2', 'transdata', 'transfunc'}
MIXTURETYPES = {'mixdata', 'mixfunc', 'mixpict', 'mixtext'}
MODIFIERTYPES = {'BRTDfunc', 'BSDF', 'aBSDF', 'antimatter', 'ashik2', 'brightdata', 'brightfunc', 'brighttext', 'colordata', 'colorfunc', 'colorpict', 'colortext', 'dielectric', 'glass', 'glow', 'illum', 'interface', 'light', 'metal', 'metal2', 'metdata', 'metfunc', 'mirror', 'mist', 'mixdata', 'mixedfunc', 'mixfunc', 'mixpict', 'mixtext', 'plasdata', 'plasfunc', 'plastic', 'plastic2', 'prism1', 'prism2', 'spotlight', 'texdata', 'texfunc', 'trans', 'trans2', 'transdata', 'transfunc'}
NONEOPAQUETYPES = {'BRTDfunc', 'BSDF', 'aBSDF', 'dielectric', 'glass', 'mist', 'mixfunc', 'prism1', 'prism2', 'trans', 'trans2', 'transdata', 'transfunc'}
PATTERNTYPES = {'brightdata', 'brightfunc', 'brighttext', 'colordata', 'colorfunc', 'colorpict', 'colortext'}
TEXTURETYPES = {'texdata', 'texfunc'}
TYPES = {'BRTDfunc', 'BSDF', 'aBSDF', 'antimatter', 'ashik2', 'brightdata', 'brightfunc', 'brighttext', 'bubble', 'colordata', 'colorfunc', 'colorpict', 'colortext', 'cone', 'cup', 'cylinder', 'dielectric', 'glass', 'glow', 'illum', 'instance', 'interface', 'light', 'mesh', 'metal', 'metal2', 'metdata', 'metfunc', 'mirror', 'mist', 'mixdata', 'mixedfunc', 'mixfunc', 'mixpict', 'mixtext', 'plasdata', 'plasfunc', 'plastic', 'plastic2', 'polygon', 'prism1', 'prism2', 'ring', 'source', 'sphere', 'spotlight', 'texdata', 'texfunc', 'trans', 'trans2', 'transdata', 'transfunc', 'tube'}
property dependencies

Get list of dependencies for this primitive.

Additional dependencies can be added with the add_dependent method.

property display_name

Get or set a string for the object name without any character restrictions.

If not set, this will be equal to the identifier.

property identifier

Get or set a text string for the unique primitive identifier.

property is_geometry

Get a boolean noting whether this object is a Radiance geometry.

property is_material

Get a boolean noting whether this object is a material modifier.

property is_mixture

Get a boolean noting whether this object is a mixture modifier.

property is_modifier

Get a boolean indicating whether this object is a Radiance modifier.

Modifiers include materials, mixtures, textures and patterns.

property is_opaque

Get or set a boolean to indicate whether this primitive is opaque.

This property is used to separate opaque and non-opaque geometries as well as modifiers.

property is_pattern

Get a boolean noting whether this object is a pattern modifier.

property is_texture

Get a boolean noting whether this object is a texture modifier.

property is_void

Only true for a void.

property modifier

Get or set an object for the primitive modifier.

property type

Get or set a string for the primitive type.

This should always be lower case in order to match the radiance convention.

property values

Get or set the values of the current primitive as a list of three lists.

Each sub-list represents a line of the primitive’s radiance representation and contain the properties that define the primitive.

Usage:

# This will erase all values except the first line, which has 9 custom items
primitive.values = [
    [0.5, 0.5, 0.5, "/usr/oak.pic", ".", "frac(U)", "frac(V)", "-s", 1.1667],
    [],
    []
]