pdhalf_bi/uni

this closes #164
tomara-x · May 23, 2024 · 28a74d9 · 28a74d9
1 parent ca8d6b7
commit 28a74d9
Showing 1 changed file with 24 additions and 0 deletions.
diff --git a/src/functions.rs b/src/functions.rs
@@ -539,6 +539,30 @@ pub fn str_to_net(op: &str) -> Net32 {
                 return Net32::wrap(Box::new(tap_linear(min(p0,p1), max(p0,p1))));
             }
         }
+        "pdhalf_bi" => {
+            return Net32::wrap(Box::new(map(|i: &Frame<f32,U2>| {
+                let midpoint = i[1].clamp(-1.,1.);
+                if i[0] < midpoint {
+                    let leftslope = if midpoint != -1. { (midpoint + 1.).recip() } else { 0. };
+                    leftslope * i[0]
+                } else {
+                    let rightslope = if midpoint != 1. { (1. - midpoint).recip() } else { 0. };
+                    rightslope * (i[0] - midpoint) + 0.5
+                }
+            })));
+        }
+        "pdhalf_uni" => {
+            return Net32::wrap(Box::new(map(|i: &Frame<f32,U2>| {
+                let midpoint = if i[1] >= 1. { 1. } else if i[1] <= -1. { 0. } else { (i[1] + 1.) / 2. }  ;
+                if i[0] < midpoint {
+                    let leftslope = if midpoint != 0. { 0.5/midpoint } else { 0. };
+                    leftslope * i[0]
+                } else {
+                    let rightslope = if midpoint != 1. { 0.5/(1. - midpoint) } else { 0. };
+                    rightslope * (i[0] - midpoint) + 0.5
+                }
+            })));
+        }
 
         // -------------------- math --------------------
         "add" => {