sprite_synthesize — GFX2D `sprite` op

• Data kinds: none → rgba (an op determined by its arguments alone — it takes no image or data input)

• Call: import gfx2d; gfx2d.sprite_synthesize(kind='disc', size=32, color='emphasis', thickness=0.25, scheme='okabe_ito') (or opsgfx2d.get("sprite_synthesize"))

Usage

A deterministic anti-aliased test sprite, `rgba (size, size, 4)`.

The entry point of the sprite sort: it needs no asset on disk, and because

the silhouette comes from an implicit equation the alpha channel *is* the

ground-truth coverage mask — which is the whole reason this family belongs

in a vision library.

`kind is "disc", "ring", "box", "diamond" or "star"`.

`color is a :mod:palette` role name (default) or an explicit 3/4-tuple.

`thickness` is the ring's wall as a fraction of the radius.

Coverage is computed by 4x4 regular supersampling, so alpha takes values on

the exact lattice `k/16`.

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• gfx2d_scene — py -3.11 examples/gfx2d_scene.py

Ops the type connects to (they accept `rgba` as input)

premultiply · alpha_composite · sprite_blit · sprite_transform · sprite_sheet_slice · nine_slice

Same category (`sprite`)

sprite_blit · sprite_transform · sprite_sheet_slice · nine_slice

*Provenance: gfx2d.py — GFX2D operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

sprite_synthesize — GFX2D sprite op