Fill Tool Options

The following options are available in the Options panel:

Extend Fill	Fills selected edges by extending the neighboring faces.
Patch Fill	Fills the selected edges using the initial tangency of neighboring faces to create a smooth patch.
Tangent to all sides	Available for Patch Fill. Makes the patch tangent when possible to the neighboring faces.
Show UV grid	Enabled for Patch Fill. Displays a grid on the Fill preview to help visualize the contours. Use the dropdown slider to adjust the density of the grid.
Show deviation	Enabled for Patch Fill. Shows a Deviation analysis of the patch. You can set the color and scale used to display the analysis.

In the Fill tool, using the Patch option, fill multiple areas at once using Alt-selected tangency influences and preview the changes. In the example, the two loops are being filled simultaneously and previewed. Notice the preview change when a different Point is Alt-selected.