particles rising motes
Small soft glowing motes drifting slowly upward, the only riser in the particle family.
Like the rest of the family, count is an absolute number, not a density: the same
value puts the same number of motes on a 1080p and a 4K monitor. Bump it per scene if a
field tuned on a laptop looks sparse on a large display.
Set twinkle = true for a shimmering starfield: each mote pulses independently, at
twinkle_speed, dimming by up to twinkle_depth. The deepfield.toml
scene uses it for its twinkling stars.
Properties
| key | type | default | meaning |
|---|---|---|---|
count | integer | `40` | Number of motes. |
color | [r,g,b,a] | `[1.0, 1.0, 1.0, 0.5]` | Mote color. |
radius_px | float | `0.4` | Core radius in logical px. Deliberately tiny; a soft glow halo about 3x the core does the visible work, so small changes go a long way. |
twinkle | bool | `false` | Pulse each mote's brightness in and out, so the field shimmers instead of glowing steadily. Off = constant brightness. |
twinkle_speed | float | `1.4` | Pulse rate in radians/second (only used when `twinkle` is on). Higher = faster shimmer. |
twinkle_depth | float | `0.6` | How far the pulse dims a mote below its peak, `0.0`–`1.0` (only used when `twinkle` is on). This is the "how noticeable" lever: `0` is imperceptible, `1` fades fully to dark. |
every key is optional; omit it and the default applies. misspelled keys are silently ignored, so if a setting seems to do nothing, check the spelling against this table. colors are 0.0–1.0 float arrays.