WIP: image

5 files changed, 1339 insertions, 1 deletions

diff --git a/Cargo.lock b/Cargo.lock
index e08df41..eaeae7d 100644
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diff --git a/Cargo.toml b/Cargo.toml
index f249668..5613b7a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,4 +4,6 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+image = "0.25.8"
+imageproc = "0.25.0"
 phf = { version = "0.13.1", features = ["macros"] }
diff --git a/src/image.rs b/src/image.rs
new file mode 100644
index 0000000..8e57d2f
--- /dev/null
+++ b/src/image.rs
@@ -0,0 +1,80 @@
+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_HEIGHT: u32 = 100;
+const DIRECTION_LINE_WIDTH: u32 = 20;
+
+/*
+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,
+    ]);
+}
+
+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 {
+    ext(img, &mut (*curw, *curh), &mut (COMPONENT_WIDTH, COMPONENT_HEIGHT));
+    draw_filled_rect_mut(img, Rect::at(*curw as i32, *curh as i32).of_size(COMPONENT_WIDTH, COMPONENT_HEIGHT), colors::PROCESS);
+    *curw = COMPONENT_WIDTH / 2;
+    *curh += COMPONENT_HEIGHT;
+    (*curw, *curh)
+}
+
+fn draw_direction(img: &mut DynamicImage, (oriw, orih): &mut Offset) -> Offset {
+    ext(img, &mut (*oriw, *orih), &mut (DIRECTION_LINE_WIDTH, DIRECTION_LINE_HEIGHT));
+    draw_line_segment_mut(img, (*oriw as f32, *orih as f32), ((*oriw + DIRECTION_LINE_WIDTH) as f32, (*orih + DIRECTION_LINE_HEIGHT) as f32), colors::DIRECT);
+    *orih += DIRECTION_LINE_HEIGHT;
+    (*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();
+}
diff --git a/src/lib.rs b/src/lib.rs
index a553e33..05c7525 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,4 @@
 pub mod ast;
+pub mod image;
 pub mod parser;
 pub mod tokenizer;
diff --git a/src/main.rs b/src/main.rs
index ab265d5..0fa96b0 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,8 +1,15 @@
+use std::path::Path;
+
 use java2flowchart::ast::parse;
+use java2flowchart::image::create;
 use java2flowchart::parser;
 
 fn main() {
     let test = "if (first) {firstthen; if (firstthenif) {firstthenifthen} else {firstthenelse}} else {firstelse}println('a')";
 
-    println!("{:#?}", parse(&parser::parse(test)));
+    let ast = parse(&parser::parse(test));
+
+    println!("{:#?}", ast);
+
+    create(&ast, Path::new("output.png"));
 }