M9.13: Particle Playground Particle Exploder, Ephemeral Property Mapper, Affects, text and layer particles

- Particle Exploder, Ephemeral Property Mapper (operators), Affects groups on every
  producer / force / mapper (source, selection map, characters, age + feather).
- Full mapper target list (angle, torque, scale, gradient velocity/force, lifespan,
  character, font size, time offset, scale speed...); old saves remap by label.
- Cannon / Grid text particles (stroke font), Auto-Orient Rotation, Layer Map draws the
  map layer per particle with Time Offset Type / Time Offset.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/effects/src/catalog.rs

@@ -37,7 +37,6 @@ pub const PARTIAL: &[(&str, &str)] = &[
     ("ec.vr.converter", "common layouts only"),
     ("ec.sim.caustics", "no Sky group or light type"),
     ("ec.sim.foam", "no wobble, pop velocity, custom bubble texture, environment map or flow map"),
-    ("ec.sim.particleplayground", "no Particle Exploder, Ephemeral Property Mapper, Affects groups or text particles"),
     ("ec.sim.waveworld", "no wireframe controls, dry-area rendering or ground group"),
     ("ec.stylize.glow", "no Glow Operation or arbitrary colour map"),
     ("ec.stylize.cartoon", "no Edge Enhancement"),

crates/effects/src/lib.rs

@@ -593,6 +593,10 @@ pub const PARAM_GROUPS: &[(&str, &str)] = &[
     ("repel", "Repel"),
     ("wall", "Wall"),
     ("persistentPropertyMapper", "Persistent Property Mapper"),
+    ("ephemeralPropertyMapper", "Ephemeral Property Mapper"),
+    ("particleExploder", "Particle Exploder"),
+    ("affects", "Affects"),
+    ("options", "Options"),
     // Keying, Matte, Obsolete (Key Light's groups are in `keylight::GROUPS`).
     ("ultraSettings", "Ultra Settings"),
     ("fillAndStroke", "Fill and Stroke"),

crates/effects/src/migrate.rs

@@ -402,4 +402,21 @@ mod tests {
             assert_eq!(g.get("backSelf").unwrap().value, Value::Bool(self_));
         }
     }
+
+    #[test]
+    fn particle_playground_mapper_targets_remap_by_label() {
+        let spec = find("ec.sim.particleplayground").unwrap();
+        let mut next = 1;
+        let mut g = instantiate(spec, &mut Ids(&mut next), "Particle Playground", [100.0, 50.0]);
+        let old: Vec<String> =
+            ["None", "Red", "Green", "Blue", "Kinetic Friction", "Scale", "X", "Y", "X Speed", "Y Speed", "X Force", "Y Force", "Opacity", "Mass"]
+                .iter()
+                .map(|s| s.to_string())
+                .collect();
+        let pr = prop_at(&mut g, "persistentPropertyMapper/mapRedTo").unwrap();
+        pr.ui = ParamUi::Popup { options: old };
+        pr.value = Value::Enum(8);
+        assert!(upgrade_instance(spec, &mut g, &mut Ids(&mut next), [100.0, 50.0]));
+        assert_eq!(prop_at(&mut g, "persistentPropertyMapper/mapRedTo").unwrap().value, Value::Enum(15), "X Speed");
+    }
 }

crates/effects/src/textfx.rs

@@ -94,6 +94,11 @@ fn glyph_src(c: char) -> &'static str {
     }
 }
 
+/// A glyph's strokes on the 4 × 6 grid (Particle Playground's text particles).
+pub(crate) fn glyph_strokes(c: char) -> Vec<Vec<[f64; 2]>> {
+    parse_glyph(c)
+}
+
 fn parse_glyph(c: char) -> Vec<Vec<[f64; 2]>> {
     glyph_src(c)
         .split(';')

docs/effects.md

@@ -3,11 +3,11 @@
 <!-- Generated from the effect registry (crates/effects/src/catalog.rs); do not edit by hand.
      Regenerate: UPDATE_DOCS=1 cargo test -p effectcraft-effects --lib effects_doc_is_current -->
 
-EffectCraft ships 303 effects with 2647 parameters in total, grouped into the same categories as the Effects & Presets panel. Every effect is our own implementation, written from public behaviour descriptions and standard image-processing literature. Parameter names, order, popup options, units, defaults and ranges follow the reference application so that projects, expressions and muscle memory carry over.
+EffectCraft ships 303 effects with 2702 parameters in total, grouped into the same categories as the Effects & Presets panel. Every effect is our own implementation, written from public behaviour descriptions and standard image-processing literature. Parameter names, order, popup options, units, defaults and ranges follow the reference application so that projects, expressions and muscle memory carry over.
 
 - **GPU**: 24 effects also run on the GPU compositor with identical results.
 - **32**: 303 effects process 32-bit float (HDR, overbright) pixels without clamping.
-- **Status**: 269 implemented in full, 34 partial (what is missing is listed).
+- **Status**: 270 implemented in full, 33 partial (what is missing is listed).
 
 Effects are addressed by id (`ec.<category>.<name>`) or display name in commands, scripts and the control channel, and every parameter by its id (`effects/#1/blurriness`).
 
@@ -331,7 +331,7 @@ Effects are addressed by id (`ec.<category>.<name>`) or display name in commands
 | Card Dance | `ec.sim.carddance` | 53 |  | 32 | Implemented |
 | Caustics | `ec.sim.caustics` | 21 |  | 32 | Partial: no Sky group or light type |
 | Foam | `ec.sim.foam` | 24 |  | 32 | Partial: no wobble, pop velocity, custom bubble texture, environment map or flow map |
-| Particle Playground | `ec.sim.particleplayground` | 37 |  | 32 | Partial: no Particle Exploder, Ephemeral Property Mapper, Affects groups or text particles |
+| Particle Playground | `ec.sim.particleplayground` | 92 |  | 32 | Implemented |
 | Shatter | `ec.sim.shatter` | 60 |  | 32 | Implemented |
 | Wave World | `ec.sim.waveworld` | 27 |  | 32 | Partial: no wireframe controls, dry-area rendering or ground group |