#3477: Scatter: Scatter Amount takes After Effects' range

Scatter Amount takes 0..1000, After Effects' recorded valid range in the
same units (pixels); the slider stays 0..127. The CPU and GPU renderers move
each pixel by one random offset of up to the amount, so a larger amount
costs the same; samples outside the layer are transparent.
Default and slider are unchanged.

crates/aep/src/export/fx_defs.rs

@@ -738,7 +738,6 @@ mod tests {
         ("ec.distort.transform", "scaleWidth", 3471),
         ("ec.generate.beam", "startThickness", 3475),
         ("ec.generate.beam", "endThickness", 3475),
-        ("ec.stylize.scatter", "amount", 3477),
         ("ec.time.pixelmotionblur", "shutterAngle", 3481),
         ("ec.time.pixelmotionblur", "shutterSamples", 3482),
         ("ec.noise.fractal", "subSettings/subInfluence", 3485),

crates/effects/src/stylize2.rs

@@ -612,7 +612,7 @@ pub fn specs() -> Vec<EffectSpec> {
             "ec.stylize.scatter",
             "Scatter",
             vec![
-                p("amount", "Scatter Amount", num(0.0), slider(0.0, 127.0, 0.0, 127.0, 1)),
+                p("amount", "Scatter Amount", num(0.0), slider(0.0, 1000.0, 0.0, 127.0, 1)),
                 p("grain", "Grain", Value::Enum(0), popup(&["Both", "Horizontal", "Vertical"])),
                 p("randomizeEveryFrame", "Scatter Randomness", Value::Bool(false), ParamUi::Checkbox),
             ],

crates/engine/src/tests/effect_ranges.rs

@@ -54,6 +54,7 @@ const ROWS: &[(u32, &str, &str, f64, f64)] = &[
     (3472, "ec.transition.venetian", "width", 1.0, 32000.0),
     (3473, "ec.transition.venetian", "feather", 0.0, 32000.0),
     (3474, "ec.transition.radialwipe", "feather", 0.0, 32000.0),
+    (3477, "ec.stylize.scatter", "amount", 0.0, 1000.0),
 ];
 
 fn path(effect: &str, param: &str) -> String {