bifrostAeroMaterial

Depending on your renderer, the bifrostAeroMaterial gets applied automatically to the aero and bifrostAeroMesh objects when you create a Bifröst simulation.

Note: Consult the documentation for your renderer for information about whether this shader or all of its attributes are supported. The Maya Software, Maya Hardware, and Maya Vector renderers do not support this shader at all. The Maya Hardware 2.0 renderer supports some attributes.

Density

Scale
Provides overall control over the strength of the shader's effect, including the contributions from the individual emission, absorption, and scattering components.
Threshold
A minimum value of density, below which the shader has no effect.
Density Remap
Allows you to select an existing channel defined on the Bifröst shape or mesh to drive the density. When this is set to a value other than None, you can expand the Density Remap group to define a value ramp based on the channel values.

Common Attributes

The Emission, Absorption, and Scattering attribute blocks contain several attributes in common, which work in the same way.

Color
The color of the shading component.
Intensity
Controls the relative strength of the individual shading components independently.
Offset
Biases the falloff of the shading component's intensity relative to the density. High values spread the region of high intensity over a wider range, resulting in a narrow falloff region near the edges, while low values restrict the region of high intensity to a smaller radius near the center.

Emission

Adds a constant color, as if the material was emitting light.

Note: Intensity Units are not implemented. There is no way to enable this attribute.
Color Remap Channel
Allows you to select an existing channel defined on the Bifröst shape or mesh to drive the emission color. When this is set to a value other than None, you can expand the associated Color Remap group to define a color ramp based on the channel values.

Absorption

Removes color from light that is transmitted through the material from behind. In addition to darkening, this can also change the hue and saturation.

Shadow Opacity Scale
Controls the strength of shadows.
Colored Opacity
Controls the saturation of the color that is absorbed, as well as cast as shadows.

Scattering

Scatters light that enters the volume.

Density Cutoff
A minimum value of density, below which no scattering occurs.
Directionality
Controls the proportion of back and forward scattering. At 0.0, there are equal amounts of back and forward scattering. At values closer to 1.0, more light gets scattered forward than back, emulating larger particulates such as smoke or dust.