From 4e6d47792ba4fd5584b238bd7aaf8bf4f4230c90 Mon Sep 17 00:00:00 2001
From: littleblack111 <littleblack11111@gmail.com>
Date: Tue, 30 Sep 2025 18:40:03 +0800
Subject: feat(image, draw_process): allow custom direction

---
 src/image.rs | 30 ++++++++++++++++++++++--------
 1 file changed, 22 insertions(+), 8 deletions(-)

(limited to 'src')

diff --git a/src/image.rs b/src/image.rs
index 5981879..537beee 100644
--- a/src/image.rs
+++ b/src/image.rs
@@ -29,6 +29,17 @@ const RESOLUTION_MULTIPLIER: u32 = 5;
 offset based mutation model, to avoid overflowing on previous image
 */
 
+#[derive(PartialEq)]
+enum HDirection {
+    Up,
+    Down,
+}
+
+enum VDirection {
+    Left,
+    Right,
+}
+
 mod colors {
     use image::Rgba;
     pub const STARSTOP: Rgba<u8> = Rgba([
@@ -109,7 +120,7 @@ fn ext(img: &mut DynamicImage, (curw, curh): &mut NCOffset, (extw, exth): &mut N
 }
 
 // TODO: make draw_rect func
-fn draw_process(img: &mut DynamicImage, txt: &str, (curw, curh, c): &mut Offset) {
+fn draw_process(img: &mut DynamicImage, txt: &str, (curw, curh, c): &mut Offset, dir: HDirection) {
     let wrapped = wrap_str(txt);
 
     let pxscale = PxScale::from(TEXT_SCALE / 2_f32);
@@ -117,6 +128,9 @@ fn draw_process(img: &mut DynamicImage, txt: &str, (curw, curh, c): &mut Offset)
     let (text_w, _) = text_size(pxscale, font, wrapped[0].as_str());
     let w = text_w + (2 * COMPONENT_TEXT_PADDING);
     let h = TEXT_SCALE as u32 / 2 * wrapped.len() as u32 + (2 * COMPONENT_TEXT_PADDING); // text_size's height is weird and incorrect
+    if dir == HDirection::Up {
+        *curh -= h;
+    }
     ext(img, &mut (*c, *curh), &mut (w, h));
     let cw = c
         .checked_sub(w / 2)
@@ -219,18 +233,18 @@ fn build(ast: &[DepthExpr]) -> DynamicImage {
     let mut img = DynamicImage::new(0, 0, ColorType::Rgba8);
     // TODO: move to mutable singleton
     let mut offset: Offset = (0, 0, 0);
-    draw_process(&mut img, "abcdefghijklmnop", &mut offset);
+    draw_process(&mut img, "abcdefghijklmnop", &mut offset, HDirection::Down);
     draw_direction(&mut img, &mut offset, None);
-    draw_process(&mut img, "a", &mut offset);
+    draw_process(&mut img, "a", &mut offset, HDirection::Down);
     draw_direction(&mut img, &mut offset, None);
-    draw_process(&mut img, "a", &mut offset);
+    draw_process(&mut img, "a", &mut offset, HDirection::Down);
     let (a, b, c) = offset.clone();
     draw_direction(&mut img, &mut offset, None);
-    draw_process(&mut img, "a", &mut offset);
+    draw_process(&mut img, "a", &mut offset, HDirection::Down);
     draw_direction(&mut img, &mut offset, None);
-    draw_process(&mut img, "a", &mut offset);
-    draw_direction(&mut img, &mut offset, Some(&(a, b)));
-    draw_process(&mut img, "a", &mut offset);
+    draw_process(&mut img, "a", &mut offset, HDirection::Down);
+    draw_direction(&mut img, &mut offset, Some(&(a + 100, b)));
+    draw_process(&mut img, "a", &mut offset, HDirection::Up);
 
     img
 }
-- 
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