Shading Display

General parameters

Deactivate ambient lighting

Deactivates ambient lighting for your model, which means that the model will be illuminated by specifically defined light sources only. When ambient lighting is selected, the model is illuminated from all directions and by the specific light sources. This option affects the standard model shading as well as the material visualization.

By default, ambient lighting is activated.

Default shading parameters

These options impact shading visualization only. Material visualization is not affected by these options.

Ambient and diffuse coefficient

Ambient light defines the intensity of light diffused in any direction by the object, even if not lit by any light source. Diffuse light defines the intensity of light diffused by the object when lit by light sources. The same coefficient is used to define the ambient intensity and the diffuse intensity; you can enter a coefficient between 0 and 1.

By default, the ambient and diffuse coefficient is set to 1.

Specular coefficient

Defines the intensity and color of light reflected in one particular direction (highlights). The specular coefficient has a range of 0–1; you should use higher values for polished objects and lower values for matte surfaces.

By default, the specular coefficient is set to 1.

Roughness coefficient

Defines the dullness of the object; that is, the size of its reflecting zone. The roughness coefficient has a range of 0–1; higher values generate large specular spots that create a duller effect on rougher surfaces, while lower values generate very sharp highlights on very shiny surfaces.

By default, the roughness coefficient is set to 0.41.