I want to hide the 4 polygon’s that make up the eye on my head model. How can I make a mask over those 4 polygons? I don’t want the eyes to subdivide at all.
The easiest is to turn on the Lasso option and Ctrl+Shift+Drag over the polygons that you want to remove. On your first selection, only polygons that are completely enclosed by the selection area will be chosen. After that, any polygons that are partially selected will count, unless a full polygon is selected in which case only fully selected polys will count.
Ctrl+Shift+Drag on an empty part of the canvas will invert visibility.
Letting go of Shift while dragging will turn the selection area from green to red. This means that polygons in the selected area will be hidden instead of selected.
Keep in mind that if you partially divide a mesh you will get triangles at the edges where the two different poly densities come together. This will result in some strange smoothing effects because triangles and quads smooth differently when they’re divided. Also, you can only partially divide a mesh at the lowest subdivision level.
You’re probably better off splitting the eyes to another subtool. That way you’ll still be able to subdivide separately, but without any of the drawbacks.
Thanks!