From 6a567713303530d8c71bd5c83a7f19bd992de6d7 Mon Sep 17 00:00:00 2001
From: Akshay Nair <phenax5@gmail.com>
Date: Sun, 9 Feb 2025 21:49:50 +0530
Subject: Add mandelbrot fractal generator

---
 1-mandelbrot/main.ua | 20 ++++++++++++++++++++
 flake.nix            |  7 +++++--
 justfile             |  4 ++++
 main.ua              |  5 -----
 4 files changed, 29 insertions(+), 7 deletions(-)
 create mode 100644 1-mandelbrot/main.ua
 create mode 100644 justfile
 delete mode 100644 main.ua

diff --git a/1-mandelbrot/main.ua b/1-mandelbrot/main.ua
new file mode 100644
index 0000000..ed2a132
--- /dev/null
+++ b/1-mandelbrot/main.ua
@@ -0,0 +1,20 @@
+W  ← 400  # width
+H  ← 300  # height
+S  ← 0.4  # scale
+I  ← 30   # max iterations
+Ox ← ÷3 W # offset x
+Oy ← 0    # offset y
+
+ToPixel ← ⍣(
+  0.18_0.2_0.25_1 ⍤.=I
+| 0.92_0.93_0.96_1 ⍤.≥20
+| 0.37_0.5_0.67_1 ⍤.>13
+| 0.64_0.75_0.55_1 ⍤.>11
+| 0.74_0.38_0.41_1 ⍤.>8
+| 0_0_0_0
+)
+
+Iterations ← ◌:◌: ⌵ ⍢(⊙(+⊙.×.) +1|× ⊙(<100⌵) <I) 0 (ℂ 0 0)
+Img        ← ∵(ToPixel Iterations) ⊞ℂ ∩(÷S -0.5 ÷H) ⊓(-Oy)(-Ox) ⇡H⇡W
+
+&fwa "./output/mandelbrot.png" img "png" Img
diff --git a/flake.nix b/flake.nix
index 151edd3..aee510d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,8 +7,11 @@
     let
       pkgs = import nixpkgs { system = "x86_64-linux"; };
     in {
-      devShells.x86_64-linux.default = pkgs.mkShell {
-          buildInputs = [pkgs.uiua];
+      devShells.x86_64-linux.default = with pkgs; mkShell {
+        buildInputs = [
+          uiua
+          just
+        ];
       };
     };
 }
diff --git a/justfile b/justfile
new file mode 100644
index 0000000..0150b34
--- /dev/null
+++ b/justfile
@@ -0,0 +1,4 @@
+
+mandelbrot:
+  uiua run 1-mandelbrot/main.ua
+
diff --git a/main.ua b/main.ua
deleted file mode 100644
index 7b1ef26..0000000
--- a/main.ua
+++ /dev/null
@@ -1,5 +0,0 @@
-ImgW ← &fwa "./output/mandelbrot.png" img "png"
-
-Imgdata ← ⍉⊞<⊞+⇡3∿∩(÷25)⇡240⇡80
-
-ImgW Imgdata
-- 
cgit v1.3.1