With a Puppet tool, a click off the pins picked the topmost layer under
the pointer by its own bounds, and selected it. So a click where the
deformation had stretched the mesh past the layer's bounds went to the
layer behind (selecting it and giving it a Puppet effect), and any
click on another layer switched to it.
While selected layers have a Puppet effect, a click (or a press that
might start a pin marquee) now works only on them, as in After
Effects: on the layer whose mesh, as deformed now, is under the
pointer (the pin lands on the deformed shape), else the one whose own
art is (a new mesh); elsewhere nothing happens and the selection
stays. Without a rigged layer selected, the tools pick and rig the
layer under the pointer as before.
`puppet::contains` tests a point against a deformed mesh; `puppet.addPin`
uses it too (its own test only held for one triangle winding).
Test: puppet_pins_go_on_the_deformed_mesh_and_the_tool_stays_on_the_rigged_layer
(ui_viewer).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
With one Position pin and no Bend pins, every rotation and scale about the
pin is free in the ARAP energy. The 1e-9 regulariser (about 1e-12 after the
edge-length scaling) is too weak to hold them, so the CG solve turned
round-off into a visible rotation of several pixels, depending on where the
pin landed. The exact solution is the rest mesh translated by the pin's
offset, so deform() returns it directly in that case.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Paint: non-destructive Paint effect with Brush/Clone/Eraser stroke groups
(Path, Stroke Options, Transform, Duration spans, Write On End keys),
dab rasterizer (diameter/angle/roundness/hardness/spacing/flow/opacity,
pressure dynamics, modes, channels), eraser modes, clone from layer/time,
cache keys include visible strokes. paint.stroke/options/brushPreset/
setCloneSource/removeStroke/presets. Layer panel with paint tools, Paint
and Brushes panels.
Puppet: Puppet effect with meshes and Position/Advanced/Bend/Starch/Overlap
pins; alpha contour -> expansion (exact EDT) -> simplified outline ->
Delaunay with constraint recovery; ARAP (Igarashi 2005) two-step solve with
CG; anti-aliased texture-mapped rendering with overlap depth. puppet.addPin/
movePin/setPin/removePin/mesh/info. Puppet tools in the viewer with mesh
overlay and header options.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Brandon Thomas