Date: Tue, 26 Oct 2021 22:19:13 +0000 (UTC) Message-ID: <1437677915.13991.1635286753841@ip-10-0-0-233.us-west-2.compute.internal> Subject: Exported From Confluence MIME-Version: 1.0 Content-Type: multipart/related; boundary="----=_Part_13990_328640283.1635286753839" ------=_Part_13990_328640283.1635286753839 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Content-Location: file:///C:/exported.html PxrRampLightFilter

# PxrRampLightFilter

PxrRampLightFilter uses a ramp to control the light. It may= also be useful to artificially and artistically control light decay.

### Parameters

#### Ramp Direction

Ramp Type

Specify in which direction the ramp is app= lied.
• distToLight(0) - distance to the light.
• linear(1) - linear ramp.
• spherical(2) - spherical ramp.

=20
=20 =20
linear
=20
=20
=20 =20
=20
=20
=20 =20
sphere
=20
=20
=20 =20

Begin Distance

Distance where the ramp starts.

=20
=20 =20
distance =3D 0
=20
=20
=20 =20
distance =3D 3
=20
=20
=20 =20
distance =3D 6
=20
=20
=20 =20

End Distance

Distance where the ramp ends.

=20
=20 =20
end distance =3D 5
=20
=20
=20 =20
end distance =3D 7
=20
=20
=20 =20
end distance =3D 9
=20
=20
=20 =20

#### Ramp

Ramp

Define the number of knots.

Ramp Knots

An array of knot values.

=20
=20 =20
=20
=20
=20 =20
=20
=20
=20 =20
=20
=20
=20 =20

Ramp Floats

An array of float values.

Ramp Interpolation

Type of ramp interpolation:

• linear
• catmull-rom
• bspline
• constant

=20
=20 =20
b-spline
=20
=20
=20 =20
Catmull-Rom
=20
=20
=20 =20
constant
=20
=20
=20 =20
linear
=20
=20
=20 =20

#### Multiplier

Density

Controls the strength of the projected effect.

=20
=20 =20
density =3D 0.65
=20
=20
=20 =20
density =3D 0.85
=20
=20
=20 =20
density =3D 1
=20
=20
=20 =20

Invert

Specify whether to invert the projected texture before it is applied.

=20
=20 =20
invert =3D off
=20
=20
=20 =20
invert =3D on
=20
=20
=20 =20

Intensity

Global Multiplier for both the diffuse and specular contribution below.<= /p>

=20
=20 =20
intensity =3D 1.5
=20
=20
=20 =20
intensity =3D 1
=20
=20
=20 =20
intensity =3D 2.5
=20
=20
=20 =20

Diffuse

Multiplier of this light filter result for the diffuse contribution.

=20
=20 =20
diffuse =3D 1
=20
=20
=20 =20
diffuse =3D 2
=20
=20
=20 =20
diffuse =3D 3
=20
=20
=20 =20

Specular

Multiplier of this light filter result for the specular contribution.

=20
=20 =20
specular =3D 1
=20
=20
=20 =20
specular =3D 2
=20
=20
=20 =20
specular =3D 3
=20
=20
=20 =20

#### Color Ramp

Color Ramp

Define the number of knots.

=20
=20 =20
=20
=20
=20 =20
=20
=20
=20 =20
=20
=20
=20 =20

Color Ramp Knots

An array of knot values.

=20
=20 =20
=20
=20
=20 =20
=20
=20
=20 =20
=20
=20
=20 =20

Ramp Colors

An array of color values.

Color Ramp Interpolation

Type of color ramp interpolation:

• linear
• catmull-rom
• bspline
• constant

=20
=20 =20
b-spline
=20
=20
=20 =20
Catmull-Rom
=20
=20
=20 =20
constant
=20
=20
=20 =20
linear
=20
=20
=20 =20

#### Combine Mode

Combine mode for PxrRampLightFilter is always multiplied.

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