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Image color select 2: Histogram strikes back #1

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Image color select 2: Histogram strikes back #1

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a151ef1
working histogram for image color select panel
pejotejo Apr 24, 2024
b9ed7b6
working histogram for image color select panel
pejotejo Apr 24, 2024
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46 changes: 43 additions & 3 deletions tools/twix/src/panels/image_color_select.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@ use eframe::{
epaint::Vec2,
};

use egui_plot::{Bar, BarChart};
use linear_algebra::{point, vector, Point2};
use log::error;

Expand Down Expand Up @@ -49,6 +50,12 @@ struct PixelColor {
blue: f32,
}

struct ColorArray {
red: Vec<f64>,
green: Vec<f64>,
blue: Vec<f64>,
}

impl Panel for ImageColorSelectPanel {
const NAME: &'static str = "Image Color Select";

Expand Down Expand Up @@ -159,6 +166,11 @@ impl Widget for &mut ImageColorSelectPanel {
blue: 0.0,
};
let mut pixel_count: usize = 0;
let mut color_distribtion = ColorArray {
red: vec![0.0; 100],
green: vec![0.0; 100],
blue: vec![0.0; 100],
};

for i in (pixel_pos.x() as isize - self.brush_size as isize)
..(pixel_pos.x() as isize + self.brush_size as isize + 1)
Expand Down Expand Up @@ -186,6 +198,10 @@ impl Widget for &mut ImageColorSelectPanel {
average.green += color.green;
average.blue += color.blue;
pixel_count += 1;

color_distribtion.red[(color.red * 90.0) as usize] += 1.0;
color_distribtion.green[(color.green * 90.0) as usize] += 1.0;
color_distribtion.blue[(color.blue * 90.0) as usize] += 1.0;
}
}
}
Expand All @@ -206,7 +222,7 @@ impl Widget for &mut ImageColorSelectPanel {
ui.colored_label(Color32::RED, format!("r: {:.3}", max.red));
ui.colored_label(Color32::GREEN, format!("g: {:.3}", max.green));
ui.colored_label(
Color32::from_rgb(50, 150, 255),
Color32::from_rgb(50, 100, 255),
format!("b: {:.3}", max.blue),
);
ui.end_row();
Expand All @@ -215,7 +231,7 @@ impl Widget for &mut ImageColorSelectPanel {
ui.colored_label(Color32::RED, format!(" r: {:.3}", min.red));
ui.colored_label(Color32::GREEN, format!("g: {:.3}", min.green));
ui.colored_label(
Color32::from_rgb(50, 150, 255),
Color32::from_rgb(50, 100, 255),
format!("b: {:.3}", min.blue),
);
ui.end_row();
Expand All @@ -224,12 +240,24 @@ impl Widget for &mut ImageColorSelectPanel {
ui.colored_label(Color32::RED, format!(" r: {:.3}", average.red));
ui.colored_label(Color32::GREEN, format!("g: {:.3}", average.green));
ui.colored_label(
Color32::from_rgb(50, 150, 255),
Color32::from_rgb(50, 100, 255),
format!("b: {:.3}", average.blue),
);
ui.end_row();
});

ui.separator();

let red_chart = create_chart(color_distribtion.red, Color32::RED, -0.002);
let green_chart = create_chart(color_distribtion.green, Color32::GREEN, 0.0);
let blue_chart = create_chart(color_distribtion.blue, Color32::BLUE, 0.002);

egui_plot::Plot::new("karsten").show(ui, |plot_ui| {
plot_ui.bar_chart(red_chart);
plot_ui.bar_chart(green_chart);
plot_ui.bar_chart(blue_chart);
});

painter.circle(
pixel_pos,
self.brush_size,
Expand Down Expand Up @@ -280,3 +308,15 @@ fn get_pixel_chromaticity(image: &ColorImage, pixel_pos: Point2<Pixel>) -> Pixel
}
pixel
}

fn create_chart(vector: Vec<f64>, color: Color32, offset: f64) -> BarChart {
BarChart::new(
vector
.iter()
.enumerate()
.map(|(index, &value)| Bar::new(index as f64 * 0.01 + offset, value))
.collect(),
)
.color(color)
.width(0.002)
}
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