Use pairs of buffer values to render braille

src/cpuusagebuffer.rs

@@ -2,6 +2,7 @@ use crate::cpustats::get_cpu_usage;
 use crate::cpustats::get_clk_tck;
 use crate::ansiiescape;
 use crate::braille::braille_symbol;
+use crate::vectools::ValuePairs;
 
 pub struct CpuUsageBuffer {
     clk_tck: u32,
@@ -48,6 +49,15 @@ fn cpu_usages_to_braille(a: u32, b: u32) -> u8 {
     a_braille + shift_braille_one_col(b_braille)
 }
 
+fn max(a: u32, b: u32) -> u32 {
+    if a > b {
+        return a;
+    }
+    else {
+        return b;
+    }
+}
+
 impl CpuUsageBuffer {
     pub fn new() -> Self {
         let first_value = get_cpu_usage();
@@ -73,9 +83,9 @@ impl CpuUsageBuffer {
     pub fn braille(&self) -> String {
         let mut out: String = String::new();
         for n in 0..(self.cpu_num()) {
-            for u in &self.buffer {
-                out += &cpu_usage_to_color(u[n]);
-                out += &braille_symbol(cpu_usages_to_braille(u[n], u[n]));
+            for u in ValuePairs::new(self.buffer.clone().into_iter()) {
+                out += &cpu_usage_to_color(max(u.0[n], u.1[n]));
+                out += &braille_symbol(cpu_usages_to_braille(u.0[n], u.1[n]));
             }
             out += &ansiiescape::reset();
             out += "\n";

src/lib.rs

@@ -2,3 +2,4 @@ pub mod ansiiescape;
 pub mod braille;
 pub mod cpustats;
 pub mod cpuusagebuffer;
+pub mod vectools;

src/main.rs

@@ -2,11 +2,10 @@ use std::thread::sleep;
 use std::time;
 use fuedra_schwitzt::cpuusagebuffer::CpuUsageBuffer;
 use fuedra_schwitzt::ansiiescape::cursor_up;
+use fuedra_schwitzt::vectools;
 
 
 fn main() {
-
-
     // Init buffer
     let mut buffer = CpuUsageBuffer::new();
 

src/vectools.rs

@@ -0,0 +1,17 @@
+pub struct ValuePairs<I: Iterator> {
+    iter: I,
+}
+
+impl<I: Iterator> ValuePairs<I> {
+    pub fn new(iter: I) -> ValuePairs<I> {
+        ValuePairs { iter }
+    }
+}
+
+
+impl<I: Iterator> Iterator for ValuePairs<I> {
+    type Item = (I::Item, I::Item);
+    fn next(&mut self) -> Option<Self::Item> {
+        Some((self.iter.next()?, self.iter.next()?))
+    }
+}