From 2676bee57d6907a3a55ec6f0f8f6316692ef4a35 Mon Sep 17 00:00:00 2001
From: Grant Shangreaux <grant@unabridgedsoftware.com>
Date: Tue, 9 Nov 2021 20:51:04 -0600
Subject: Clean: move Osc into a file module

---
 klangfarbrs/src/osc.rs | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 klangfarbrs/src/osc.rs

(limited to 'klangfarbrs/src/osc.rs')

diff --git a/klangfarbrs/src/osc.rs b/klangfarbrs/src/osc.rs
new file mode 100644
index 0000000..9e3b147
--- /dev/null
+++ b/klangfarbrs/src/osc.rs
@@ -0,0 +1,37 @@
+use std::f32::consts::TAU;
+use crate::{Waveform, Phase, Sample};
+
+pub struct Osc {}
+
+impl Osc {
+    pub fn generate_sample(waveform: &Waveform, phase: Phase) -> Sample {
+        let phase = phase;
+
+        match waveform {
+            Waveform::Sine => {
+                (TAU * phase).sin()
+            },
+
+            Waveform::Square => {
+                if phase < 0.5 {
+                    -1.0
+                } else {
+                    1.0
+                }
+            },
+
+            Waveform::Triangle => {
+                if phase < 0.5 {
+                    4.0 * phase - 1.0
+                } else {
+                    4.0 * (1.0 - phase) - 1.0
+                }
+            },
+
+            Waveform::Sawtooth => {
+                2.0 * phase - 1.0
+            }
+        }
+    }
+}
+
-- 
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