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Fill From Mirror

The missing-half tool. Deletes every triangle on the drop side of the plane, appends a reflected copy of the keep side, and welds the seam. Topology changes. Use it when one half of a scan is simpl...

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Fill From Mirror node

The Fill From Mirror node

When to use it

The missing-half tool. Deletes every triangle on the drop side of the plane, appends a reflected copy of the keep side, and welds the seam. Topology changes. Use it when one half of a scan is simply gone, not when both halves are there and only disagree.

Fix Symmetry cannot invent partners that do not exist, and Mirror Mesh plus a wrap keeps the original topology, which is the wrong answer when half the surface is missing. This is delete, append, weld - not a boolean.

Set Keep to the half that exists, or leave it on Larger Side. A wrong Keep copies the thin stub over the good half. Press Fill From Mirror; the Filled weight map marks the vertices the mirror added.

How to use it

  1. 1

    Wire the incomplete scan into Mesh and pick the Axis

  2. 2

    Set Keep to the half that exists (or leave Larger Side)

  3. 3

    Press Fill From Mirror

    Topology will change.

Pins

Pin Type Description
Mesh Mesh The mesh that is missing a half. Passes straight through until you press Fill From Mirror.
Pin Type Description
Mesh Mesh The mesh with the missing half filled from the mirror of the keep side. Topology changes.
Filled Weight Map 1.0 on vertices appended from the mirrored keep side that survived the weld, 0.0 everywhere else.

Settings

Setting Type Description
Axis Choice The axis the mirror plane faces along. X mirrors left to right for a head looking down +Y, which is the app's front. None is refused rather than quietly doing nothing.
Plane Origin Choice Which point the mirror plane passes through.
Plane Offset Vector Nudges the plane off that point, in cm. Only the component along Axis does anything; the other two just slide the plane around inside itself.
Keep Choice Which side of the plane is kept. The other side is deleted and replaced by the mirror of this one.
Seam Tolerance Fraction Number Vertices this close to the plane, as a fraction of the bounds diagonal, count as the seam and are kept with both sides.
Weld Tolerance Number How close two seam vertices must sit before the weld merges them, in cm.
Seam Snap Fraction Number How far off the plane a boundary counts as the seam, as a fraction of the bounds diagonal. A ragged scan cut wanders off the true midline by a few millimetres; every boundary edge with both ends inside this band is pulled exactly onto the plane before the mirror, so the two halves meet with no slit no matter how far that stretch wandered. Raise it if a stubborn gap remains; lower it if a real hole near the plane (an eye socket) is being sealed shut. Keep it below the distance from the plane to the nearest hole you want to preserve. An edge with only one end in the band is a rim crossing the plane, not the seam, and is left alone.

Available in Mesh Morpher Graph and Mesh Morpher Studio.