UV Preferences

• Optimize Iterations - Sets the default number of times the Optimize algorithm is performed after the Unfold process completes (i.e., a value of 0 will unfold the mesh without any optimizations) to give you a smooth UV layout.

• Prevent Triangle Flips - Sets the default behavior for triangle flipping. When enabled, this prevents degenerate UV maps. Degeneracy can occur when a UV is moved in such a way that a face overlaps itself.

• Prevent Self Border Intersections - Sets the default behavior for self-intersections. When enabled, this prevents self-intersections on the border of the unfolded UV islands. For example, this option automatically untangles the border of a UV island when a border edge has looped around itself.

• Room Space - Set the default mapping size and distance between islands.

  • Map Size - Sets the default preset that corresponds to your texture map size (in pixels) for space calculation during unfolding.

  • Room Space - Sets the default distance between parts of the selected UV island in pixels.

    When Room space is greater than 0, it prevents textures from bleeding past the UV borders. Avoid increasing this value past its default (0 pixels), because it can slow down the unfold calculations and create distortion.

    The following example shows the fingers of a hand. When Room space is set to 0, some of the fingers overlap. When Room space is set to 2, the space between the fingers increases.

    Note:

    Prevent Self Border Intersections must be turned on to see the effects of the Room Space option.

These preferences set the default behavior for how objects or UV islands are laid out in the UV Editor. See Layout Settings for specifics.

• Pack Settings - Sets the default behavior for how the selected objects' UV islands are arranged to best fit into a specified UV space. UV islands are moved, rotated, and scaled to fit within the space, using the packing settings. See Pack Settings for specifics..

• Island Pre-Transform Settings - Sets the default behavior for the UV islands' start positions/orientations before packing begins. See Island Pre-Transform Settings for specifics.

• Island Transform Settings - Sets the default behavior for how UV islands can be transformed during the packing operation. Both translation and rotation are heavily influenced by the Layout Settings, but rotation can be further customized by specifically outlining the possible step sizes within a min/max range. See Island Transform Settings for specifics.

  • Translate Islands - Sets the default behavior for whether UV islands can be moved during the packing process. These are useful if you just want to rescale/reorient without affecting your packing arrangement or vice versa.

  • Rotate Islands - Sets the default behavior for whether UV islands can be rotated during the packing process. These are useful if you just want to rescale/reorient without affecting your packing arrangement or vice versa.

  • Rotation Step - Sets the default allowable orientations for UV islands during the packing process. During packing, rotation will begin at the Minimum Island Rotation, then progressively increase by the Rotation Step amount as necessary, up to the Maximum Island Rotation. As a result, smaller values incur slower packing speeds. Default value is 90.

  • Rotation Range - Sets the default minimum/maximum allowable orientation for UV islands during the packing process.

• Island Distribution Settings -

  • Padding Units - Sets the default units used when setting the amount of space between UV islands. Choose from pixel or UV.

  • Texture Map Size - Sets the default the size of the texture map from 32 px to custom to be used as a reference when setting the Padding Units in Pixel unit.

  • Island Padding - Sets the default amount of space to leave between UV islands when packing. If you do not see an effect, turn on Translate Islands. Add this space to avoid texture bleeding across islands. See Island Padding for specifics.

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• Tile Padding - Sets the default amount of space to leave between the UV islands and the edges of the tile. See Tile Padding for specifics.

• Island Distribution - Sets the default island placement within UV tiles. See Island Distribution for specifics.

• Tiles U/V - Sets the default number of working UV tiles for distribution.

• Packing Region - Sets the default portion of the tile space in which UV islands are packed (including the margin). When packing multiple tiles in U and V, this region represents the lower-left tile in UV space. Select from the following, then click Layout, when finished. See Packing Region for specifics.

• U min/max - Sets the default U range for island distribution when the packing region is set to custom.

• V min/max - Sets the default V range for island distribution when the packing region is set to custom.

• Scale Mode - Sets the default universal post-packing scale operation used. See Scale Mode for specifics.

These preferences set the default behavior for these options to set how objects or UV islands are optimized in the UV Editor. See Optimize Settings for specifics.

• Optimize Iterations - Sets the default number of times the optimize algorithm is performed after the Unfold process completes (i.e., a value of 0 will unfold the mesh without any optimizations). See Optimize Iterations for specifics.

• Angle vs. Distance - Sets the default strength of the surface and angular optimization, minimizing stretching and angular errors in your UV map. The default value is 1.

• Power - Sets the default for how strongly the selected UV maps are optimized. The higher the number, the larger the changes from the original geometry. The default value is 100.

• Prevent Triangle Flips - Sets the default See Prevent Triangle Flips for specifics.

• Prevent Self Border Intersections - Sets the default state for self-intersections on the borders of unfolded UV islands. See Prevent Self Border Intersections for specifics.

• Room Space

  • Map Size (Pixels) - Sets the default preset that corresponds to your texture map size.

  • Room Space (Pixels) - Sets the default distance between parts of the selected UV island.

    When Room space is greater than 0, it prevents textures from bleeding past the UV borders. Avoid increasing this value past its default (0 pixels), because it can slow down the unfold calculations and create distortion. See Room Space for specifics.

See Manipulate.

• Rotation Step Size - Sets the default rotation size used for the Rotate Left (Rotate Left) and Rotate Right (Rotate Right) toolbar button in the UV Editor.

• Use UV Lattice - Sets the default 2D UV lattice deformer for modifying the layout of multiple UVs, all at once. See Use UV Lattice for specifics.

• Columns/Rows - Sets the default number of columns/rows of the current lattice manipulator.

• Use Bounding Rectangle - Sets the default behavior for the current lattice manipulator and whether it extends past the outer edge or boundary of the target geometry.

• Falloff - Sets the default lattice manipulator's level of influence or falloff value.

See Visualize.

• Sync Zoom - Sets the default state for Zoom To (shortcut F). When enabled, using Zoom To will zoom to the selected uv islands/edges/vertices in both the UV Editor view and the 3D Viewport.

• Show Grid - Sets the default grid in the UV Editor view. See Show Grid for specifics.

• Show All Vertices - Sets the default for how all vertices are displayed. See Show All Vertices for specifics.

• Show Borders - Sets the default for how borders are displayed. See Show Borders for specifics.

• Fill Shading - Sets the default behavior for identifying overlapping UVs. See Fill Shading for specifics.

• Show Texture - Sets the default state of the texture display. See Show Texture for specifics.

• Show Checkerboard - Sets the default state of the checkerboard texture. See Show Checkerboard for specifics.

• Show Manipulator - Sets the default behavior for displaying manipulators. See Show Manipulator for specifics.

• Custom Checkerboard - Sets the default checkerboard texture used for Show Checkerboard. Click to set the path to the custom checkerboard texture. To use the default checkerboard, click .

• Show Remove Degenerate Triangles Warning - Displays a warning when the user is about to removal degenerate triangles.

• Show Cylindrical Projection Warning - If checked, a warning is shown before activating cylindrical projection, which splits geometry. Applying a cylindrical projection is not undoable.

• Show Triplanar Projection Warning - Sets the default behavior for the Triplanar Projection warning. When enabled, the warning is displayed.

Sets the default options for the UV Editor > File > Save UV Snapshot dialog. Takes a snapshot of the UV Editor's UV layout area and saves it to a file. Use this to build texture maps for use in other software, such as Photoshop.

• Width/Height - Sets the default dimensions in pixels for the snapshot. When setting them, click the lock to lock the ratio.

• UV Area - Sets 0 to 1 UV Space or Bounding Box as the default UV area used.