Euclidean + hue rotation

src/app.rs

@@ -111,6 +111,7 @@ impl App {
                 flash_brightness: self.ui.flash_brightness,
                 color_scheme: self.ui.color_scheme,
                 layout: self.audio.config.layout,
+                hue_rotation: self.ui.hue_rotation,
                 ..Default::default()
             },
             link: crate::settings::LinkSettings {
@@ -1311,7 +1312,15 @@ impl App {
             }
             AppCommand::SetColorScheme(scheme) => {
                 self.ui.color_scheme = scheme;
-                crate::theme::set(scheme.to_theme());
+                let base_theme = scheme.to_theme();
+                let rotated = cagire_ratatui::theme::transform::rotate_theme(base_theme, self.ui.hue_rotation);
+                crate::theme::set(rotated);
+            }
+            AppCommand::SetHueRotation(degrees) => {
+                self.ui.hue_rotation = degrees;
+                let base_theme = self.ui.color_scheme.to_theme();
+                let rotated = cagire_ratatui::theme::transform::rotate_theme(base_theme, degrees);
+                crate::theme::set(rotated);
             }
             AppCommand::ToggleRuntimeHighlight => {
                 self.ui.runtime_highlight = !self.ui.runtime_highlight;
@@ -1429,6 +1438,65 @@ impl App {
             AppCommand::ResetPeakVoices => {
                 self.metrics.peak_voices = 0;
             }
+
+            // Euclidean distribution
+            AppCommand::ApplyEuclideanDistribution {
+                bank,
+                pattern,
+                source_step,
+                pulses,
+                steps,
+                rotation,
+            } => {
+                let pat_len = self.project_state.project.pattern_at(bank, pattern).length;
+                let rhythm = euclidean_rhythm(pulses, steps, rotation);
+
+                let mut created_count = 0;
+                for (i, &is_hit) in rhythm.iter().enumerate() {
+                    if !is_hit {
+                        continue;
+                    }
+
+                    let target = (source_step + i) % pat_len;
+
+                    if target == source_step {
+                        continue;
+                    }
+
+                    if let Some(step) = self
+                        .project_state
+                        .project
+                        .pattern_at_mut(bank, pattern)
+                        .step_mut(target)
+                    {
+                        step.source = Some(source_step);
+                        step.script.clear();
+                        step.command = None;
+                        step.active = true;
+                    }
+                    created_count += 1;
+                }
+
+                self.project_state.mark_dirty(bank, pattern);
+
+                for (i, &is_hit) in rhythm.iter().enumerate() {
+                    if !is_hit || i == 0 {
+                        continue;
+                    }
+                    let target = (source_step + i) % pat_len;
+                    let saved = self.editor_ctx.step;
+                    self.editor_ctx.step = target;
+                    self.compile_current_step(link);
+                    self.editor_ctx.step = saved;
+                }
+
+                self.load_step_to_editor();
+                self.ui.flash(
+                    &format!("Created {} linked steps (E({pulses},{steps}))", created_count),
+                    200,
+                    FlashKind::Success,
+                );
+            }
         }
     }
 
@@ -1481,3 +1549,21 @@ impl App {
         }
     }
 }
+
+fn euclidean_rhythm(pulses: usize, steps: usize, rotation: usize) -> Vec<bool> {
+    if pulses == 0 || steps == 0 || pulses > steps {
+        return vec![false; steps];
+    }
+
+    let mut pattern = vec![false; steps];
+    for i in 0..pulses {
+        let pos = (i * steps) / pulses;
+        pattern[pos] = true;
+    }
+
+    if rotation > 0 {
+        pattern.rotate_left(rotation % steps);
+    }
+
+    pattern
+}