UV Menu Settings

The UV menu is divided into two tabbed sections: Controls and Texture.

Controls Tab

Effect field: Displays the amount of warp applied to the UV map.
Softness X field: Displays the amount of softness along the X axis of the UV map.
Softness Y field: Displays the amount of softness along the Y axis of the UV map.
Apply Type box: Select which attached maps are affected by the UV map. This setting is also available from the Texture tab.
Use Object ID button: Enable to use Object ID info embedded into the blue channel when using a UV map generated by Maya. The object ID allows you to control which objects within the UV map are displaced. In Maya, when performing a UV Render Pass, enable Embed Object ID in Blue Channel. When disabled, blue channel information is ignored.
Object ID field: Displays the specific blue value corresponding to an object ID.
Pick button: Click to display the picker to select an object ID in the image through its blue value.

Texture Tab

Regen button: Enable to dynamically refresh the image as changes are made to the UV settings. This setting is also available from the Controls tab.
Repeat Mode box: Select how the UV map pattern is repeated on the surface.
Fit Method box: Select a fit method option to be applied to the UV map.
Keep Aspect button: Enable to preserve the aspect ratio of non-square pixels (not available for the Fill fit method).
Use Cropped Size button: Enable to replace the UV map with the cropped size of the UV media. Disable to use the cropped normal media as is.
Mapping box: Select the type of texture mapping.

Wrap (Geom UVs) Wrap mapping completely envelops the 3D model with the texture map according to the object’s texture coordinates. To use this option, you must import a model that has its own texture coordinates. When using Wrap mode, you can also apply UV mapping settings from the Geometry menu.

Plane Planar mapping applies the map without distorting the front plane of the 3D model, similar to a movie projector casting an image onto a screen. All 3D coordinates of the geometry are mapped to this plane to generate the texture values. Planar mapping positions the lower-left corner of the map on the 3D model’s axis. When you apply planar mapping, any surfaces on the 3D model perpendicular to the front plane cause the pixels at the edge of the texture to project along the “sides” of the object.

Perspective Perspective mapping is similar to planar mapping, except that it performs a perspective transformation of the map based on the selected camera’s field of view (FOV). When you select Perspective as the mapping type, the Perspective Camera box becomes active, allowing you to specify the active camera. The FOV of the camera has an impact on the resulting effect of any transform applied to the parent axis of the texture. On stereo cameras, the interaxial distance between left and right cameras also has an effect on the resulting perspective transform.

Projection The texture behaves as if it is projected by the selected camera. Projection mapping is useful as an alternative to projecting textures using the Projector node, especially when it is necessary to project while preserving a specific camera POV.

Camera box

Specify which camera’s FOV to take into account when using perspective or projection mapping.

Camera field

Displays the active perspective or projection camera number.

Stereo Camera Projection box

Select whether to use the centre, left, or right camera from a stereo camera rig when projection mapping.

Filter box

Select the type of filtering to apply to the map.

Select:	To apply:
Nearest	No filtering — the pixel of the texture closest to the screen pixel is displayed.
Linear	Basic bilinear filtering.
Anisotropic	Non-proportional filtering between X and Y (faster to process than EWA, but with a lesser quality).
Aniso+Linear	A combination of Anisotropic and Linear filtering.
EWA	A high-quality elliptical weighted average filter to produce enhanced rendering results (slower to process than other filters).
EWA+Linear	A combination of EWA and Linear filtering (offers the most advanced filter processing).

TipYou can set the default filtering type, as well as EWA filtering functionality in the Action Setup menu.

Camera Type box

Select the camera type visibility for the map. For example, you can use this setting to apply a Left Eye and Right Eye camera type for two maps that are children of the same surface or geometry in a stereo scene.