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Louise FoxandClaude Opus 5.5
78105cc695
A filter could reshape and repaint objects, but not set the stroke's
join, cap or miter limit, nor the effects an object's appearance holds.
A tool that prepares objects for a live effect (a sheet of samples,
each with the effect at its own settings) had to leave the user to
apply the effect to each object by hand.
- Each input stroke has its join, cap and miterLimit beside its paint
and width (live effects get the same, through the shared encoder),
and each object its own effect records, {id, params, visible}.
- An output stroke may set them (miter limit clamped to 1-500), and an
output object's "effects" replaces its own effects.
- The host admits each record as effect.apply does: an effect that
effect.list lists or an installed live-effect plug-in, parameters it
takes (filled in to their defaults; a plug-in's checked against its
manifest), one 3D effect that fits the object (its fills' and
strokes' own effects counted), and the texture of an effect with
Load Texture (Glass, Texturizer) as the effect stores it, never a
file to read. A record the object already had stays as
it is, so a filter that hands its input back changes nothing. One
refused record refuses the whole output and the document stays as
it was.
The plug-ins crate checks the records' form; which effects exist is the
engine's to say (objects::AdmitEffects, engine plugin::admit_effects).
effects::validate_three_d is the one check of whether a 3D effect fits
an object, for effect.apply, effect.setParams and the filters.
A path handed back as it was now stays the live shape it was: write()
dropped a live rectangle's or ellipse's parameters whenever the output
held a path, changed or not, so a filter that returned its input
turned a live rectangle into a plain path.
objects/tests.rs checks the round trip, stroke styles on existing and
new strokes, the host's refusal, the bad forms refused, and a live
rectangle handed back unchanged (a plain path before the fix);
tests_plugins.rs runs filters that set a built-in and a plug-in effect,
an echo that changes nothing, and six refused outputs.
CRAFT_PLUGIN_FRAME_WASM=<folder> saves a test filter to try in the app.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HhvnnnD5fTFupK8WWq35un