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use image::{ColorType, DynamicImage, GenericImage, ImageBuffer, imageops};
use imageproc::drawing::{Canvas, draw_cross_mut, draw_filled_circle_mut, draw_filled_rect_mut, draw_hollow_circle_mut, draw_hollow_rect_mut, draw_line_segment_mut};
use imageproc::rect::Rect;
use std::path::Path;
use crate::ast::DepthExpr;
type Offset = (u32, u32); // x, y or width, height
const COMPONENT_WIDTH: u32 = 20;
const COMPONENT_HEIGHT: u32 = 20;
const DIRECTION_LINE_LENGTH: u32 = 20;
const RESOLUTION_MULTIPLIER: u32 = 50;
/*
offset based mutation model, to avoid overflowing on previous image
*/
mod colors {
use image::Rgba;
pub const STARSTOP: Rgba<u8> = Rgba([
63, 122, 86, 255,
]);
pub const PROCESS: Rgba<u8> = Rgba([
0, 104, 124, 255,
]);
pub const IO: Rgba<u8> = Rgba([
149, 30, 88, 255,
]);
pub const DIRECT: Rgba<u8> = Rgba([
31, 133, 53, 255,
]);
pub const BG: Rgba<u8> = Rgba([
0, 0, 0, 0,
]);
}
const fn res(original: u32) -> u32 {
original * RESOLUTION_MULTIPLIER
}
fn ext(img: &mut DynamicImage, (curw, curh): &mut Offset, (extw, exth): &mut Offset) {
let (w, h) = img.dimensions();
let extedw = *extw + *curw;
let extedh = *exth + *curh;
if extedw < w || extedh < h {
return;
}
let mut resized = ImageBuffer::from_pixel(extedw, extedh, colors::BG);
imageops::overlay(&mut resized, img, 0, 0);
*img = image::DynamicImage::ImageRgba8(resized);
}
fn draw_process(img: &mut DynamicImage, (curw, curh): &mut Offset) -> Offset {
*curw = curw
.checked_sub(res(COMPONENT_WIDTH) / 2)
.unwrap_or(0);
ext(img, &mut (*curw, *curh), &mut (res(COMPONENT_WIDTH), res(COMPONENT_HEIGHT)));
draw_filled_rect_mut(img, Rect::at(*curw as i32, *curh as i32).of_size(res(COMPONENT_WIDTH), res(COMPONENT_HEIGHT)), colors::PROCESS);
*curw += res(COMPONENT_WIDTH) / 2;
*curh += res(COMPONENT_HEIGHT);
(*curw, *curh)
}
fn draw_direction(img: &mut DynamicImage, (oriw, orih): &mut Offset) -> Offset {
ext(img, &mut (*oriw, *orih), &mut (res(10), res(DIRECTION_LINE_LENGTH))); // idk y but 10w is neede for it to work
println!("{}", *oriw);
draw_line_segment_mut(img, (*oriw as f32, *orih as f32), (*oriw as f32, (*orih + res(DIRECTION_LINE_LENGTH)) as f32), colors::DIRECT);
*orih += res(DIRECTION_LINE_LENGTH);
(*oriw, *orih)
}
fn build(ast: &[DepthExpr]) -> DynamicImage {
let mut img = DynamicImage::new(0, 0, ColorType::Rgba8);
let mut offset = (0, 0);
draw_process(&mut img, &mut offset);
draw_direction(&mut img, &mut offset);
draw_process(&mut img, &mut offset);
img
}
pub fn create(ast: &[DepthExpr], path: &Path) {
build(ast)
.save(path)
.unwrap();
}
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