This page provides information on the VRayTexFalloff node.
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UI Path: ||Toolbar|| > V-Ray Menu icon > Textures > VRayTexFalloff
Front / Side Color – Sets the extreme ends of the range of colors for the Falloff Map's gradient. The specific placement of these colors on the surface is determined by Falloff Type and Falloff Direction.
Falloff Type – Specifies the type of falloff:
Towards/away – Based on face normal directions. Faces with normals that point in the Falloff Direction generate the Front Color while those facing in the opposite direction (180 degrees off the falloff direction) generate the Side Color.
Perpendicular/Parallel – Based on face normal directions. Faces with normals that point in the Falloff Direction generate the Front Color while those facing in a perpendicular direction (90 degrees off the falloff direction) generate the Side Color.
Fresnel – Based on changes to the index of refraction (IOR) over the surface due to Fresnel calculations. Faces with normals that point in the Falloff Direction generate the Front Color and those facing in other directions generate varying colors depending on the IOR set by Fresnel Index Of Reflection.
Distance blend – Sets the falloff range based on distance from the camera, as specified by Near Distance and Far Distance. This option is useful for generating a Z-depth type of map when rendering a very large object such as terrain, where the Falloff Map can be used as a mask to dim distant details. For more information, see the Distance Falloff Type example below.
Falloff Direction – Specifies the falloff direction to be used by the Falloff Type.
Viewing Direction (Camera Z-Axis) – Uses the camera viewing direction. This is the most common selection.
viewX / viewY –Uses one of the camera's other axes.
Explicit direction –Uses the direction specified by the Explicit direction parameter.
local X / local Y / local Z –Uses one of the object's local axes.
worldX / world Y / world Z –Uses one of the world axes.
Explicit direction – Specifies the direction for falloff when Falloff Direction is set to Explicit direction.
Fresnel index Of reflection – Defines the IOR (Index of Refraction)when Falloff Type is set to Fresnel.
Near distance – When Falloff Type is set to Distance, parts of the surface at this distance from the camera will receive the Front Color. For more information, see the Distance Falloff Type example below.
Far distance – When Falloff Type is set to Distance, parts of the surface at this distance from the camera will receive the Side Color. For more information, see the Distance Falloff Type example below.
Extrapolate – When enabled, the effect continues beyond the range set by Near Distance and Far Distance. Parts of the surface nearer than Near Distance receive the Front Color, while parts farther from the camera than Far Distance will receive the Side Color.
Enable color map – Turns on the Remap Curves.
mix – Controls the mix of the Front color and the Side color.
red – The intensity of the red channel.
green – The intensity of thegreen channel.
blue – The intensity of the blue channel.
reset – Resets all curves to default values.
The following controls can be used in the color gradients and diagrams: Double click – Creates a new point or changes an existing one. |
These parameters can adjust the transition between Front Color and Side Color over the Falloff Map's gradient.
Invert – Inverts the color values.
Clamp – Clamps the color values.
Alpha from RGB intensity – Takes the alpha information from the intensity of the RGB.
Output amount – Determines the alpha multiplier.
RGB offset – Allows a color offset to the produced RGB values.
RGB level – Determines the intensity of the falloff effect.
Bump amount – Defines how much bump is produced.
In the example below, the Falloff type has been set to Distance blend and mapped to the diffuse color of the V-Ray Material on the humbucker pickups on the guitar.
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