From 21e720bb89e494cc89e99169e13fff9bf0dbdc6f Mon Sep 17 00:00:00 2001
From: Grant Shangreaux <grant@unabridgedsoftware.com>
Date: Fri, 29 Oct 2021 19:44:06 -0500
Subject: Add: pack an Array<Vector2<f32>> of samples and push_buffer
- add a method to set the sample rate of the sine wave
---
klangfarbrs/src/lib.rs | 19 +++++++++++++------
1 file changed, 13 insertions(+), 6 deletions(-)
(limited to 'klangfarbrs')
diff --git a/klangfarbrs/src/lib.rs b/klangfarbrs/src/lib.rs
index 1489667..0628e34 100644
--- a/klangfarbrs/src/lib.rs
+++ b/klangfarbrs/src/lib.rs
@@ -5,12 +5,14 @@ use std::f32::consts::TAU;
#[derive(NativeClass)]
#[inherit(Node)]
-pub struct SineWave {}
+pub struct SineWave {
+ sample_rate: f32
+}
#[methods]
impl SineWave {
fn new(_owner: &Node) -> Self {
- SineWave {}
+ SineWave { sample_rate: 44100.0 }
}
#[export]
@@ -19,12 +21,17 @@ impl SineWave {
}
#[export]
- pub fn frames(&self, _owner: &Node, frequency: f32, sample_rate: f32, duration: i32) -> TypedArray<f32> {
+ fn set_sample_rate(&mut self, _owner: &Node, sample_rate: f32) {
+ self.sample_rate = sample_rate;
+ }
+
+ #[export]
+ pub fn frames(&self, _owner: &Node, frequency: f32, duration: i32) -> TypedArray<Vector2> {
let mut frames = TypedArray::new();
- let calculated_duration = sample_rate * duration as f32;
- for i in 0..calculated_duration as i32 {
- frames.push((TAU * frequency * i as f32/sample_rate).sin());
+ for i in 0..duration as i32 {
+ let sample = (TAU * frequency * i as f32/self.sample_rate).sin();
+ frames.push(Vector2::new(sample, sample));
}
return frames
--
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