Initial commit

6 files changed, 190 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
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+/target
diff --git a/Cargo.lock b/Cargo.lock
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+++ b/Cargo.lock
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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "textgraph"
+version = "0.1.0"
diff --git a/Cargo.toml b/Cargo.toml
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index 0000000..eaeeca4
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+++ b/Cargo.toml
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+[package]
+name = "textgraph"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/src/graph.rs b/src/graph.rs
new file mode 100644
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+++ b/src/graph.rs
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+const _BRAILLE_1: char = '⣿';
+
+const ASCII_0: char = '─';
+const ASCII_1: char = '│';
+const ASCII_2: char = '╭';
+const ASCII_3: char = '╰';
+const ASCII_4: char = '╮';
+const ASCII_7: char = '╯';
+
+const BRAILLE_1_0: char = '⡀';
+const BRAILLE_1_1: char = '⣀';
+const BRAILLE_1_2: char = '⣀';
+const BRAILLE_2_0: char = '⡄';
+const BRAILLE_3_0: char = '⡆';
+const BRAILLE_4_0: char = '⡇';
+
+
+/*
+  ╭────────╮
+╭─╯        │
+╰          ╰╮
+            ╰────────
+*/
+
+#[derive(Debug)]
+pub struct GraphOptions {
+    pub width: f64,
+    pub height: f64,
+}
+
+#[derive(Debug)]
+pub struct SeriesAspects<T> {
+    max: T,
+    min: T,
+}
+
+pub trait SeriesTraits: std::cmp::PartialOrd + Clone + std::ops::Div + std::ops::Sub {}
+impl<T: std::cmp::PartialOrd + Clone + std::ops::Div + std::ops::Sub> SeriesTraits for T {}
+
+impl<T: SeriesTraits> From<&Vec<T>> for SeriesAspects<T> {
+    fn from(series: &Vec<T>) -> SeriesAspects<T> {
+        let mut it = series.iter();
+        let first = it.next();
+        let mut min = first.expect("TG2");
+        let mut max = first.expect("TG3");
+        while let Some(i) = it.next() {
+            if i < min {
+                min = i;
+            }
+            if i > max {
+                max = i;
+            }
+        }
+        SeriesAspects {
+            max: max.clone(),
+            min: min.clone(),
+        }
+    }
+}
+
+
+pub fn downsample(series: &[f64], column_count: usize) -> Vec<f64> {
+    let factor = series.len() as f64 / column_count as f64;
+    (0..column_count).map(|i| series[(i as f64 * factor) as usize]).collect()
+}
+
+pub fn interpolate(series: &[f64], marks: &[f64], column_count: usize) -> Vec<f64> {
+    let min_mark = marks.iter().cloned().fold(f64::INFINITY, f64::min);
+    let max_mark = marks.iter().cloned().fold(f64::NEG_INFINITY, f64::max);
+    let step = (max_mark - min_mark) / (column_count as f64 - 1.0);
+    let mut interpolated_data = Vec::new();
+    
+    for i in 0..column_count {
+        let target_mark = min_mark + i as f64 * step;
+        let mut j = 0;
+        while j < marks.len() - 1 && marks[j + 1] < target_mark {
+            j += 1;
+        }
+        let t0 = marks[j];
+        let t1 = marks[j + 1];
+        let d0 = series[j];
+        let d1 = series[j + 1];
+        let value = d0 + (d1 - d0) * (target_mark - t0) / (t1 - t0);
+        interpolated_data.push(value);
+    }
+    
+    interpolated_data
+}
+
+fn scale(series: &[f64], row_count: usize) -> Vec<usize> {
+    let min_value = series.iter().cloned().fold(f64::INFINITY, f64::min);
+    let max_value = series.iter().cloned().fold(f64::NEG_INFINITY, f64::max);
+    let scale_factor = (row_count - 1) as f64 / (max_value - min_value);
+    series.iter().map(|&y| ((y - min_value) * scale_factor).round() as usize).collect()
+}
+
+pub fn star(series: &[f64], options: &GraphOptions) -> String {
+    let scaled_data = scale(series, options.height as usize);
+    let mut graph = vec![vec![' '; options.width as usize]; options.height as usize];
+    
+    for (i, &value) in scaled_data.iter().enumerate() {
+        let y = options.height as usize - value - 1; // Invert y-axis for ASCII graph
+        graph[y][i] = '*';
+    }
+    
+    graph.iter().map(|row| row.iter().collect::<String>()).collect::<Vec<String>>().join("\n")
+}
+
+pub fn ascii_trailing(series: &[f64], options: &GraphOptions) -> String {
+    let scaled_data = scale(series, options.height as usize);
+    let mut graph = vec![vec![' '; options.width as usize]; options.height as usize];
+    
+    for (i, &value) in scaled_data.iter().enumerate() {
+        let y = options.height as usize - value - 1; // Invert y-axis for ASCII graph
+        graph[y][i] = '*';
+    }
+    
+    graph.iter().map(|row| row.iter().collect::<String>()).collect::<Vec<String>>().join("\n")
+}
+
+pub fn braille(series: &Vec<f64>, options: &GraphOptions) -> String {
+    let aspects = SeriesAspects::from(series);
+    let canvas = String::with_capacity((options.width * options.height) as usize);
+
+
+    /*
+    r = (max - min)  
+    r' = (max' - min')  
+    y' = (((y - min) * r') / r) + min'
+    */
+    let r = aspects.max - aspects.min;
+    let r_marked = options.height;
+
+    let norm_after = options.height;
+
+    //for (x, y) in series.iter().enumerate() {
+    //    let y = norm(y.clone(), 0.0, options.height);
+    //    let x = norm(x.clone(), 0.0, options.width);
+    //}
+
+    String::from("")
+}
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..6f94350
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1 @@
+pub mod graph;
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..4cae5be
--- /dev/null
+++ b/src/main.rs
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+use textgraph::graph;
+
+fn main() {
+    let mut line: Vec<f64> = Vec::new();
+    let mut marks: Vec<f64> = Vec::new();
+    for i in 0..500 {
+        line.push((i as f64 * std::f64::consts::PI / 120.0).sin());
+        marks.push(i as f64);
+    }
+
+    // Choose one of the methods based on sample speed:
+    //let downsampled_data = graph::downsample(&line, 100);
+    let interpolated_data = graph::interpolate(&line, &marks, 100);
+
+
+    //let processed_data = if marks.windows(2).all(|w| w[1] - w[0] == w[0] - w[1]) {
+    //    downsample(&series, options.width)
+    //} else {
+    //    interpolate(&series, &marks, options.width)
+    //};
+
+
+    let g = graph::ascii_trailing(
+        &interpolated_data,
+        &graph::GraphOptions {
+            width: 100.0,
+            height: 30.0,
+        },
+    );
+    println!("{}", g);
+}