.. _bpy.types.ShaderNodeBsdfAnisotropic: **************** Anisotropic BSDF **************** .. figure:: /images/render_shader-nodes_shader_anisotropic_node.png :align: right Anisotropic BSDF. The *Anisotropic* :abbr:`BSDF (Bidirectional scattering distribution function)` is used to add a glossy reflection, with separate control over U and V direction roughness. The tangents used for shading are derived from the active UV map. If no UV map is available, they are automatically generated using a sphere mapping based on the mesh bounding box. Inputs ====== Color Color of the surface, or physically speaking, the probability that light is reflected for each wavelength. Roughness Sharpness of the reflection; perfectly sharp at 0.0 and smoother with higher values. Anisotropy Amount of anisotropy in the reflection; 0.0 gives a round highlight. Higher values give elongated highlights orthogonal to the tangent direction; negative values give highlights shaped along the tangent direction. Rotation Rotation of the anisotropic tangent direction. Value 0.0 equals 0° rotation, 0.25 equals 90° and 1.0 equals 360° = 0°. This can be used to texture the tangent direction. Normal Normal used for shading; if nothing is connected the default shading normal is used. Tangent Tangent used for shading; if nothing is connected the default shading tangent is used. Properties ========== Distribution Microfacet distribution to use. *Sharp* results in perfectly sharp reflections like a mirror, while *Beckmann*, *GGX* and *Ashikhmin-Shirley* can use the *Roughness* input for blurry reflections. Outputs ======= BSDF output Standard shader output. Examples ======== .. list-table:: * - .. figure:: /images/render_shader-nodes_shader_anisotropic_rot0.jpg Anisotropic rotation on 0. - .. figure:: /images/render_shader-nodes_shader_anisotropic_rot025.jpg Anisotropic rotation on 0.25 (90°). .. figure:: /images/render_shader-nodes_shader_anisotropic_example.jpg Anisotropic shading with 0° rotation, 90° rotation and textured rotation of the tangent direction. `Example blend-file `__.