Adds a rolling effect that changes perceived front/back shading while particles move.
| Key | Type | Example | Notes |
|---|---|---|---|
enable |
boolean |
true / false |
Enables roll effect |
speed |
number / range |
0 / { min: 1, max: 5 } |
Roll speed |
backColor |
color object |
Back-face color, see IColor | |
darken.enable |
boolean |
true / false |
Enables darkening on rotation |
darken.value |
number |
5 |
Percent of darkness |
enlighten.enable |
boolean |
true / false |
Enables lightening on rotation |
enlighten.value |
number |
5 |
Percent of lightness |
{
"roll": {
"enable": true,
"speed": { "min": 2, "max": 6 },
"darken": {
"enable": true,
"value": 15
},
"enlighten": {
"enable": false,
"value": 0
}
}
}