refactor pulse duration field to offset field.

src-tauri/src/pattern/frequency_shifting.rs

@@ -3,7 +3,7 @@ use serde::{Deserialize, Serialize};
 
 use crate::fraction::Fraction;
 
-#[derive(Debug, Clone, Serialize, Deserialize)]
+#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
 pub enum FrequencyShifting {
     Linear,
     Quadratic,
@@ -56,7 +56,7 @@ pub fn shifting_frequency(
             sample_tick,
             start_timing,
             start_pulse.frequency,
-            start_timing + start_pulse.duration,
+            start_timing + end_pulse.offset,
             end_pulse.frequency,
             (0.0, 0.0),
             (1.0, 1.0),
@@ -65,7 +65,7 @@ pub fn shifting_frequency(
             sample_tick,
             start_timing,
             start_pulse.frequency,
-            start_timing + start_pulse.duration,
+            start_timing + end_pulse.offset,
             end_pulse.frequency,
             (1.0, 0.0),
             (1.0, 1.0),
@@ -74,7 +74,7 @@ pub fn shifting_frequency(
             sample_tick,
             start_timing,
             start_pulse.frequency,
-            start_timing + start_pulse.duration,
+            start_timing + end_pulse.offset,
             end_pulse.frequency,
             (0.9, 0.1),
             (1.0, 0.2),
@@ -83,7 +83,7 @@ pub fn shifting_frequency(
             sample_tick,
             start_timing,
             start_pulse.frequency,
-            start_timing + start_pulse.duration,
+            start_timing + end_pulse.offset,
             end_pulse.frequency,
             (0.33, 0.0),
             (0.67, 1.0),
@@ -91,14 +91,14 @@ pub fn shifting_frequency(
         FrequencyShifting::Pulsating => periodic_shifting(
             sample_tick,
             start_timing,
-            start_timing + start_pulse.duration,
+            start_timing + end_pulse.offset,
             start_pulse.frequency.min(end_pulse.frequency),
             end_pulse.frequency.max(start_pulse.frequency),
         ),
         FrequencyShifting::Spiking => periodic_shifting(
             sample_tick,
             start_timing,
-            start_timing + start_pulse.duration,
+            start_timing + end_pulse.offset,
             start_pulse.frequency.min(end_pulse.frequency),
             start_pulse.frequency.max(end_pulse.frequency) * 2.0,
         ),
@@ -111,7 +111,7 @@ pub fn shifting_frequency(
             sample_tick,
             start_timing,
             start_pulse.frequency,
-            start_timing + start_pulse.duration,
+            start_timing + end_pulse.offset,
             end_pulse.frequency,
             end_pulse.control_point_1.into(),
             end_pulse.control_point_2.into(),

src-tauri/src/pattern/mod.rs

@@ -14,6 +14,8 @@ use serde::{Deserialize, Serialize};
 use sled::IVec;
 use uuid::Uuid;
 
+static SMOOTH_REPEAT_FADE_OFFSET: u32 = 100;
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct Pattern {
@@ -65,10 +67,9 @@ impl Pattern {
     pub fn total_duration(&self) -> u32 {
         let mut duration = 0;
         for (index, pulse) in self.pulses.iter().enumerate() {
-            if (index == self.pulses.len() - 1 && self.smooth_repeat)
-                || index < self.pulses.len() - 1
-            {
-                duration += pulse.duration;
+            duration += pulse.offset;
+            if index == self.pulses.len() - 1 && self.smooth_repeat {
+                duration += SMOOTH_REPEAT_FADE_OFFSET;
             }
         }
         duration

src-tauri/src/pattern/pulse.rs

@@ -3,7 +3,10 @@ use std::collections::VecDeque;
 use serde::{Deserialize, Serialize};
 use uuid::Uuid;
 
-use super::frequency_shifting::{self, deserialize_frequency_shifting, FrequencyShifting};
+use super::{
+    frequency_shifting::{self, deserialize_frequency_shifting, FrequencyShifting},
+    SMOOTH_REPEAT_FADE_OFFSET,
+};
 use crate::fraction::Fraction;
 
 pub fn calculate_output_ratio(waveform_frequency: f64) -> Fraction {
@@ -30,7 +33,7 @@ pub struct Pulse {
     pub order: u32,
     pub id: Uuid,
     #[serde(default)]
-    pub duration: u32,
+    pub offset: u32,
     pub width: u32,
     pub maniac: bool,
     pub frequency: f64,
@@ -41,6 +44,7 @@ pub struct Pulse {
 }
 
 #[derive(Debug, Clone, Copy, Serialize)]
+#[serde(rename_all = "camelCase")]
 pub struct RawPulse {
     pub tick_order: u32,
     pub z: u16,
@@ -86,13 +90,22 @@ pub fn generate_pulse_sequence<P: IntoIterator<Item = Pulse>>(
     let mut peekable_pulses = sorted_pulses.iter().peekable();
     while let Some(p) = peekable_pulses.next() {
         if let Some(next_pulse) = peekable_pulses.peek() {
-            while sample_tick < (timing + p.duration) {
+            while sample_tick < (timing + next_pulse.offset) {
                 sample_queue.push_back((sample_tick, timing, p.clone(), (*next_pulse).clone()));
                 sample_tick += 25;
             }
-            timing += p.duration;
+            timing += next_pulse.offset;
         } else if smooth_repeat && head_pulse.is_some() {
-            sample_queue.push_back((sample_tick, timing, p.clone(), head_pulse.unwrap().clone()));
+            sample_queue.push_back((
+                sample_tick,
+                timing,
+                p.clone(),
+                Pulse {
+                    offset: SMOOTH_REPEAT_FADE_OFFSET,
+                    order: p.order + 1,
+                    ..head_pulse.unwrap().clone()
+                },
+            ));
         } else {
             break;
         }
@@ -107,7 +120,7 @@ pub fn generate_pulse_sequence<P: IntoIterator<Item = Pulse>>(
                     y: prev.frequency,
                 },
                 CanvasPoint {
-                    x: (timing + prev.duration) as f64,
+                    x: (timing + next.offset) as f64,
                     y: next.frequency,
                 },
                 prev.control_point_1,