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use crate::config::*;
use crate::corpus::*;
use crate::layout::*;
use crate::output::*;
use std::fmt;
pub fn prelayout_fitness(corpus: &Corpus, layout: &Prelayout) -> f32 {
let mut score: f32 = 0.0;
for i in 0..6 {
let keys = layout.get_standard_column(i);
let k1 = keys[0];
let k2 = keys[1];
let k3 = keys[2];
score += corpus.get_bigram_perc(k1, k2)
+ corpus.get_bigram_perc(k1, k3)
+ corpus.get_bigram_perc(k2, k3);
score += (corpus.get_skipgram_perc(k1, k2)
+ corpus.get_skipgram_perc(k1, k3)
+ corpus.get_skipgram_perc(k2, k3))
* STANDARD_DSFB_WEIGHT;
}
for i in 0..2 {
let keys = layout.get_index_column(i);
let k1 = keys[0];
let k2 = keys[1];
let k3 = keys[2];
let k4 = keys[3];
let k5 = keys[4];
let k6 = keys[5];
let index_percs = keys.iter().map(|&k| corpus.get_character_count(k)).sum();
score += index_usage_fitness(corpus.get_total_count(), index_percs);
score += corpus.get_bigram_perc(k1, k2)
+ corpus.get_bigram_perc(k1, k3)
+ corpus.get_bigram_perc(k2, k3)
+ corpus.get_bigram_perc(k4, k5)
+ corpus.get_bigram_perc(k4, k6)
+ corpus.get_bigram_perc(k5, k6)
+ corpus.get_bigram_perc(k1, k4)
+ corpus.get_bigram_perc(k1, k5)
+ corpus.get_bigram_perc(k1, k6)
+ corpus.get_bigram_perc(k2, k4)
+ corpus.get_bigram_perc(k2, k5)
+ corpus.get_bigram_perc(k2, k6)
+ corpus.get_bigram_perc(k3, k4)
+ corpus.get_bigram_perc(k3, k5)
+ corpus.get_bigram_perc(k3, k6);
}
score
}
pub struct Evaluation {
keypress: [u32; NUM_KEYS],
total_keypress: u32,
total_bigrams: u32,
sfb: [f32; 8],
dsfb: [f32; 8],
}
impl Evaluation {
pub fn evaluate_layout(corpus: &Corpus, layout: &Layout) -> Evaluation {
let mut keypress: [u32; NUM_KEYS] = [0; NUM_KEYS];
let mut sfb: [f32; 8] = [0.0; 8];
let mut dsfb: [f32; 8] = [0.0; 8];
for (i, &c) in layout.get_keys().iter().enumerate() {
keypress[i] = corpus.get_character_count(c as u8);
}
for i in 0..8 {
let ind = if i < 4 { i } else { i + 2 };
let k1 = layout.get_key(ind + 10 * 0);
let k2 = layout.get_key(ind + 10 * 1);
let k3 = layout.get_key(ind + 10 * 2);
sfb[i] = corpus.get_bigram_perc(k1, k2)
+ corpus.get_bigram_perc(k1, k3)
+ corpus.get_bigram_perc(k2, k3);
dsfb[i] = corpus.get_skipgram_perc(k1, k2)
+ corpus.get_skipgram_perc(k1, k3)
+ corpus.get_skipgram_perc(k2, k3);
if i == 3 {
let k4 = layout.get_key(4 + 10 * 0);
let k5 = layout.get_key(4 + 10 * 1);
let k6 = layout.get_key(4 + 10 * 2);
sfb[i] += corpus.get_bigram_perc(k4, k5)
+ corpus.get_bigram_perc(k4, k6)
+ corpus.get_bigram_perc(k5, k6)
+ corpus.get_bigram_perc(k1, k4)
+ corpus.get_bigram_perc(k1, k5)
+ corpus.get_bigram_perc(k1, k6)
+ corpus.get_bigram_perc(k2, k4)
+ corpus.get_bigram_perc(k2, k5)
+ corpus.get_bigram_perc(k2, k6)
+ corpus.get_bigram_perc(k3, k4)
+ corpus.get_bigram_perc(k3, k5)
+ corpus.get_bigram_perc(k3, k6);
} else if i == 4 {
let k4 = layout.get_key(5 + 10 * 0);
let k5 = layout.get_key(5 + 10 * 1);
let k6 = layout.get_key(5 + 10 * 2);
sfb[i] += corpus.get_bigram_perc(k4, k5)
+ corpus.get_bigram_perc(k5, k6)
+ corpus.get_bigram_perc(k4, k6)
+ corpus.get_bigram_perc(k1, k4)
+ corpus.get_bigram_perc(k1, k5)
+ corpus.get_bigram_perc(k1, k6)
+ corpus.get_bigram_perc(k2, k4)
+ corpus.get_bigram_perc(k2, k5)
+ corpus.get_bigram_perc(k2, k6)
+ corpus.get_bigram_perc(k3, k4)
+ corpus.get_bigram_perc(k3, k5)
+ corpus.get_bigram_perc(k3, k6);
}
}
return Evaluation {
keypress,
total_keypress: corpus.get_total_count(),
total_bigrams: corpus.get_total_bigrams(),
sfb,
dsfb,
};
}
fn output_eval(&self) -> String {
let mut result = String::new();
let tot = self.total_keypress as f32;
let big = self.total_bigrams as f32;
let tig = self.total_bigrams as f32;
result += &"Percent per key:\n";
result += &format_block_output(self.keypress.into_iter().map(|k| 100.0 * k as f32 / tot));
let mut finger_usages = [0; 8];
for (i, &c) in self.keypress.iter().enumerate() {
finger_usages[KEY_TO_FINGER[i]] += c;
}
result += "\nFinger usage: ";
let mut lh: f32 = 0.0;
let mut rh: f32 = 0.0;
for (i, &u) in finger_usages.iter().enumerate() {
let f = u as f32 / tot * 100.0;
result += &format!("{:>5.2}%{}", f, if i < 7 { ", " } else { "" });
if i % 10 < 4 {
lh += f;
} else {
rh += f;
}
}
result += &format!("\nHand usage: {:.2}% vs {:.2}%", lh, rh);
result += "\nSFB distribution : ";
for (i, &u) in self.sfb.iter().enumerate() {
result += &format!("{:>6.3}%{}", u * 100.0, if i < 7 { ", " } else { "" });
}
result += "\nDSFB distribution: ";
for (i, &u) in self.dsfb.iter().enumerate() {
result += &format!("{:>6.3}%{}", u * 100.0, if i < 7 { ", " } else { "" });
}
let sfb = self.sfb.iter().sum::<f32>();
let dsfb = self.dsfb.iter().sum::<f32>();
result += &format!("\nTotal sfb: {:.3}% ({:.0})", sfb * 100.0, sfb * big);
result += &format!("\nTotal dsfb: {:.3}% ({:.0})", dsfb * 100.0, dsfb * tig);
return result;
}
}
impl fmt::Display for Evaluation {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str(&self.output_eval())
}
}
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