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Remove nalgebra in favour of a handmade function

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This commit is contained in:
est31 2019-08-09 20:46:41 +02:00
parent 655d05100f
commit a15ca2b43e
3 changed files with 10 additions and 9 deletions
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1
Cargo.toml
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@ -14,7 +14,6 @@ cpal = "0.8"
hound = { version = "3.3.1", optional = true }
lazy_static = "1.0.0"
lewton = { version = "0.9", optional = true }
nalgebra = "0.18"
minimp3 = { version = "0.3.2", optional = true }
[features]

1
src/lib.rs
View file

@ -88,7 +88,6 @@ extern crate claxon;
extern crate cpal;
#[cfg(feature = "wav")]
extern crate hound;
extern crate nalgebra;
#[macro_use]
extern crate lazy_static;
#[cfg(feature = "vorbis")]

17
src/source/spatial.rs
View file

@ -1,4 +1,3 @@
use nalgebra::Point3;
use source::ChannelVolume;
use std::fmt::Debug;
use std::time::Duration;
@ -16,6 +15,13 @@ where
input: ChannelVolume<I>,
}
fn dist(a: [f32; 3], b: [f32; 3]) -> f32 {
a.iter().zip(b.iter())
.map(|(a, b)| (a - b) * (a - b))
.sum::<f32>()
.sqrt()
}
impl<I> Spatial<I>
where
I: Source,
@ -39,12 +45,9 @@ where
pub fn set_positions(
&mut self, emitter_pos: [f32; 3], left_ear: [f32; 3], right_ear: [f32; 3],
) {
let emitter_position = Point3::from(emitter_pos);
let left_ear = Point3::from(left_ear);
let right_ear = Point3::from(right_ear);
let left_distance = (left_ear - emitter_position).magnitude();
let right_distance = (right_ear - emitter_position).magnitude();
let max_diff = (left_ear - right_ear).magnitude();
let left_distance = dist(left_ear, emitter_pos);
let right_distance = dist(right_ear, emitter_pos);
let max_diff = dist(left_ear, right_ear);
let left_diff_modifier = ((left_distance - right_distance) / max_diff + 1.0) / 4.0 + 0.5;
let right_diff_modifier = ((right_distance - left_distance) / max_diff + 1.0) / 4.0 + 0.5;
let left_dist_modifier = (1.0 / left_distance.powi(2)).min(1.0);