optionally clear after each fade step

1 files changed, 13 insertions, 3 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 5952517..fd2d4f2 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -839,19 +839,26 @@ pub struct Fade
     to:       Palette,
     hz:       u8,
     duration: Duration,
+    clear:    bool,
 }
 
 impl Fade
 {
-    pub fn new(from: Palette, to: Palette, duration: Duration, hz: u8) -> Self
+    pub fn new(
+        from: Palette,
+        to: Palette,
+        duration: Duration,
+        hz: u8,
+        clear: bool,
+    ) -> Self
     {
         let hz = if hz == 0 { 1 } else { hz };
-        Self { from, to, hz, duration }
+        Self { from, to, hz, duration, clear }
     }
 
     pub fn commence(self, con: &Console) -> io::Result<()>
     {
-        let Self { from, to, hz, duration } = self;
+        let Self { from, to, hz, duration, clear } = self;
         con.apply_palette(&from)?;
 
         let fade = FadePalette::from(&con.current_palette()?);
@@ -866,6 +873,9 @@ impl Fade
             let progress = f64::from(i) / f64::from(iters);
             let pal = Palette::from(&fade.towards(&fade_to, progress));
             con.apply_palette(&pal)?;
+            if clear {
+                con.clear()?;
+            }
             let next = i * tick;
             std::thread::sleep(next.saturating_sub(t_0.elapsed()));
         }