particle_render — GFX2D particle op

• 数据种类:table → rgba

• 调用:import gfx2d; gfx2d.particle_render(state, height, width, mode='add', fade=True)(或 opsgfx2d.get("particle_render"))

用法

把粒子状态 splat 到 `rgba` 图像上。

> 以下的详细说明为原文 —— 摘要与标题已翻译。

Each particle is a radially symmetric `(1 - (r/R)^2)^2` kernel of radius

`size, weighted by its alpha and, when fade` is set, by the remaining

fraction of its life `(1 - age/life)`. Particles past their lifetime

contribute nothing.

`mode is "add"` (premultiplied additive — what a spark does; the

result is clipped at 1 and the clipped energy is *not* returned) or

`"over"` (each particle composited in array order, which is what a soft

smoke puff does).

Pure function of the state: no randomness enters here, so two calls on the

same state produce identical bytes.

参考(示例数据・文献)

• 示例数据目录(下载 URL / 许可证) —— 2-D 用 skimage.data(BSD/公有领域)加合成图,3-D 给出真实数据源(Stanford/PDS 等)的下载 URL。

• 算子来历与参考文献 —— 该算子族所依据的研究/方法出处。

• 算法的正典(作者・年份)与用途见上面的族使用指南。

可运行的示例(实际调用该算子并已验证的样例)

• gfx2d_scene — py -3.11 examples/gfx2d_scene.py

类型可衔接的下一个算子(可接受 rgba 作为输入)

premultiply · alpha_composite · sprite_blit · sprite_transform · sprite_sheet_slice · nine_slice

同类别(particle)

particle_emit · particle_step

*Provenance: gfx2d.py — GFX2D 算子登记表。本条目由 tools/opdocs.py md 自动生成(请勿手工编辑)。*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.