From 2ac18802b58d671c10538e78d50a620baad9a188 Mon Sep 17 00:00:00 2001
From: metamuffin <metamuffin@disroot.org>
Date: Wed, 7 Dec 2022 21:23:42 +0100
Subject: advanced transform

---
 evc/src/debug.rs | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 52 insertions(+), 1 deletion(-)

(limited to 'evc/src/debug.rs')

diff --git a/evc/src/debug.rs b/evc/src/debug.rs
index 06dd507..99723b8 100644
--- a/evc/src/debug.rs
+++ b/evc/src/debug.rs
@@ -1,4 +1,11 @@
-use crate::{frame::Frame, helpers::pixel::Pixel, helpers::vector::Vec2, view::View};
+use crate::{
+    block::Block,
+    format::ser::map_scalar8,
+    frame::Frame,
+    helpers::vector::Vec2,
+    helpers::{matrix::Mat2, pixel::Pixel},
+    view::View,
+};
 
 impl View<&mut Frame> {
     pub fn draw_box(&mut self, color: Pixel) {
@@ -54,3 +61,47 @@ impl Pixel {
         b: 255,
     };
 }
+
+pub fn draw_debug(block: &Block, mut target: View<&mut Frame>) {
+    match &block {
+        Block::Literal(_) => {
+            target.draw_box(Pixel::GREEN);
+        }
+        Block::Split(box [a, b]) => {
+            let [at, bt] = target.split_mut_unsafe();
+            draw_debug(a, at);
+            draw_debug(b, bt);
+        }
+        Block::Reference { translation } => {
+            target.draw_box(Pixel::BLUE);
+            target.frame.draw_line(
+                target.center().into(),
+                (target.center() + *translation).into(),
+                Pixel::RED,
+            )
+        }
+        Block::AdvancedReference(r) => {
+            let mat = Mat2 {
+                a: map_scalar8(r.transform.a),
+                b: map_scalar8(r.transform.b),
+                c: map_scalar8(r.transform.c),
+                d: map_scalar8(r.transform.d),
+            };
+            let translation = Vec2 {
+                x: map_scalar8(r.translation.x),
+                y: map_scalar8(r.translation.y),
+            };
+            let tl = mat.transform(translation) + target.offset.into();
+            let tr =
+                mat.transform(translation + target.size.x_only().into()) + target.offset.into();
+            let bl =
+                mat.transform(translation + target.size.y_only().into()) + target.offset.into();
+            let br = mat.transform(translation + target.size.into()) + target.offset.into();
+            target.frame.draw_line(tl, tr, Pixel::MAGENTA);
+            target.frame.draw_line(tr, br, Pixel::MAGENTA);
+            target.frame.draw_line(bl, br, Pixel::MAGENTA);
+            target.frame.draw_line(tl, bl, Pixel::MAGENTA);
+            target.draw_box(Pixel::CYAN);
+        }
+    }
+}
-- 
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