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Point and mesh editing ​

Pulling an outline about, and bending a picture.

Points of a path ​

A path's points being edited: squares on the outline, the selected one blue

Covered on Paths and points: double-click a path to edit it, click the outline to add a point on the curve, Esc to leave.

A picture's mesh ​

A picture's mesh on the stage: its points and the lines between them

A picture is a rectangle until you give it a mesh: a net of points across it that you can move, so the picture bends. Turn it on in the picture's Deform section.

ControlWhat it does
GenerateBuilds the net
Auto traceFinds the artwork's outline and meshes only that, so a cut-out does not carry its empty corners
Edit contourDraw the outline by hand instead
Density X / YHow fine the net is
ResetBack to a plain grid

Auto trace has four knobs, and the panel explains what each costs: Detail aims for about so many points, spent where the outline bends; Uniform breaks up long straight runs so the mesh follows the artwork more closely; Alpha decides what counts as artwork; Concavity how far notches are filled in; Padding how much room is left around it.

With no picture to read, it says so rather than producing nothing useful: "Auto trace needs a picture to read. Give this image an asset first."

Once there is a mesh:

  • Double-click the picture to add a point.
  • Drag points to bend the artwork.
  • Texture mapping moves, scales and turns the picture inside the mesh — useful for lining artwork up with the shape you meshed.

Bones and weights ​

An arm bound to two bones: the lower bone turned, and the arm following it

A mesh is what lets bones move a picture. Draw bones with B, select the picture and the bones together, then Bind.

ControlWhat it does
Paint weightsBrush how strongly each point follows the selected bone
SmoothEvens out a patchy painting
Auto weightsA starting point from the bones' positions
InfluencesHow many bones may hold one point
Weight blendHow much of a point's hold is shared. Zero gives the nearest bone everything

While painting, the brush ring on the stage is its true reach. Ctrl+drag resizes it — right for wider, down for stronger — and the editor tells you where you landed: "Brush 48px, 60% strength." [ and ] change the size from the keyboard, with Shift for strength.

Nine-slicing instead ​

The Deform section: mesh and nine-slicing

If you only need a panel to stretch without its corners going soft, you do not need a mesh: use N-slicing on the picture or the group. See Image.

See also ​

airZ Editor manual