From 572a1da60df34d1cbeff8212188738acf9b0c63a Mon Sep 17 00:00:00 2001
From: stickynotememo <samk26633@gmail.com>
Date: Sun, 4 Jan 2026 15:52:24 +1100
Subject: [PATCH] triangle

---
 Cargo.lock       | 1643 +++++++++++++++++++++++++++++++++++++++++++++-
 Cargo.toml       |    2 +
 src/main.rs      |  167 ++++-
 src/tests/mod.rs |   27 +
 4 files changed, 1826 insertions(+), 13 deletions(-)
 create mode 100644 src/tests/mod.rs

diff --git a/Cargo.lock b/Cargo.lock
index 3493452..607c243 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,86 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
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+version = "0.2.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "01c0457472c38ea5bd1c3b5ada5e368271cb550be7a4ca4a0b4634e9913f6cc2"
+dependencies = [
+ "ab_glyph_rasterizer",
+ "owned_ttf_parser",
+]
+
+[[package]]
+name = "ab_glyph_rasterizer"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "366ffbaa4442f4684d91e2cd7c5ea7c4ed8add41959a31447066e279e432b618"
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a15f179cd60c4584b8a8c596927aadc462e27f2ca70c04e0071964a73ba7a75"
+dependencies = [
+ "cfg-if",
+ "getrandom 0.3.4",
+ "once_cell",
+ "version_check",
+ "zerocopy",
+]
+
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+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ef6978589202a00cd7e118380c448a08b6ed394c3a8df3a430d0898e3a42d046"
+dependencies = [
+ "android-properties",
+ "bitflags 2.10.0",
+ "cc",
+ "cesu8",
+ "jni",
+ "jni-sys",
+ "libc",
+ "log",
+ "ndk",
+ "ndk-context",
+ "ndk-sys",
+ "num_enum",
+ "thiserror",
+]
+
+[[package]]
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+checksum = "fc7eb209b1518d6bb87b283c20095f5228ecda460da70b44f0802523dea6da04"
+
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+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
+
+[[package]]
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+checksum = "175571dd1d178ced59193a6fc02dde1b972eb0bc56c892cde9beeceac5bf0f6b"
+
+[[package]]
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+checksum = "1505bd5d3d116872e7271a6d4e16d81d0c8570876c8de68093a09ac269d8aac0"
+
 [[package]]
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@@ -20,6 +100,73 @@ version = "2.10.0"
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 checksum = "812e12b5285cc515a9c72a5c1d3b6d46a19dac5acfef5265968c166106e31dd3"
 
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+dependencies = [
+ "objc2 0.5.2",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
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+
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+dependencies = [
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+ "quote",
+ "syn",
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b99da2f8558ca23c71f4fd15dc57c906239752dd27ff3c00a1d56b685b7cbfec"
+dependencies = [
+ "bitflags 2.10.0",
+ "log",
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+ "rustix 0.38.44",
+ "slab",
+ "thiserror",
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+
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+dependencies = [
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+ "rustix 0.38.44",
+ "wayland-backend",
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@@ -27,21 +174,189 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
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@@ -49,15 +364,58 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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 dependencies = [
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- "windows-sys",
+ "windows-sys 0.61.2",
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+
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+checksum = "d737d9aa519fb7b749cbc3b962edcf310a8dd1f4b67c91c4f83975dbdd17d965"
+dependencies = [
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+ "foreign-types-shared",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a5c6c585bc94aaf2c7b51dd4c2ba22680844aba4c687be581871a6f518c5742"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa9a19cbb55df58761df49b23516a86d432839add4af60fc256da840f66ed35b"
+
+[[package]]
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+checksum = "1bd49230192a3797a9a4d6abe9b3eed6f7fa4c8a8a4947977c6f80025f92cbd8"
+dependencies = [
+ "rustix 1.1.2",
+ "windows-link",
+]
+
 [[package]]
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@@ -69,18 +427,133 @@ dependencies = [
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+[[package]]
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+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "899def5c37c4fd7b2664648c28120ecec138e4d395b459e5ca34f9cce2dd77fd"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "r-efi",
+ "wasip2",
+]
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
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+
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+dependencies = [
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+ "hashbrown",
+]
+
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+dependencies = [
+ "cesu8",
+ "cfg-if",
+ "combine",
+ "jni-sys",
+ "log",
+ "thiserror",
+ "walkdir",
+ "windows-sys 0.45.0",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+checksum = "9afb3de4395d6b3e67a780b6de64b51c978ecf11cb9a462c66be7d4ca9039d33"
+dependencies = [
+ "getrandom 0.3.4",
+ "libc",
+]
+
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+checksum = "464a3709c7f55f1f721e5389aa6ea4e3bc6aba669353300af094b29ffbdde1d8"
+dependencies = [
+ "once_cell",
+ "wasm-bindgen",
+]
+
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7c4b02199fee7c5d21a5ae7d8cfa79a6ef5bb2fc834d6e9058e89c825efdc55"
+dependencies = [
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+ "windows-link",
+]
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+dependencies = [
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+ "libc",
+ "redox_syscall 0.7.0",
+]
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a385b1be4e5c3e362ad2ffa73c392e53f031eaa5b7d648e64cd87f27f6063d7"
+
 [[package]]
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 version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "df1d3c3b53da64cf5760482273a98e575c651a67eec7f77df96b5b642de8f039"
 
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+version = "0.4.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
+
 [[package]]
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@@ -114,6 +587,36 @@ dependencies = [
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 ]
 
+[[package]]
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+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3f42e7bbe13d351b6bead8286a43aac9534b82bd3cc43e47037f012ebfd62d4"
+dependencies = [
+ "bitflags 2.10.0",
+ "jni-sys",
+ "log",
+ "ndk-sys",
+ "num_enum",
+ "raw-window-handle",
+ "thiserror",
+]
+
+[[package]]
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+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
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+ "rustix 1.1.2",
+ "windows-sys 0.61.2",
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+
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@@ -142,6 +1007,15 @@ dependencies = [
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+dependencies = [
+ "toml_edit",
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+
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@@ -169,6 +1043,12 @@ dependencies = [
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+
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@@ -196,7 +1076,53 @@ version = "0.6.4"
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@@ -208,8 +1134,71 @@ dependencies = [
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- "linux-raw-sys",
- "windows-sys",
+ "linux-raw-sys 0.11.0",
+ "windows-sys 0.61.2",
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+checksum = "c66d4b9ed69c4009f6321f762d6e61ad8a2389cd431b97cb1e146812e9e6c732"
+dependencies = [
+ "ahash",
+ "android-activity",
+ "atomic-waker",
+ "bitflags 2.10.0",
+ "block2",
+ "bytemuck",
+ "calloop",
+ "cfg_aliases",
+ "concurrent-queue",
+ "core-foundation",
+ "core-graphics",
+ "cursor-icon",
+ "dpi",
+ "js-sys",
+ "libc",
+ "memmap2",
+ "ndk",
+ "objc2 0.5.2",
+ "objc2-app-kit",
+ "objc2-foundation 0.2.2",
+ "objc2-ui-kit",
+ "orbclient",
+ "percent-encoding",
+ "pin-project",
+ "raw-window-handle",
+ "redox_syscall 0.4.1",
+ "rustix 0.38.44",
+ "sctk-adwaita",
+ "smithay-client-toolkit",
+ "smol_str",
+ "tracing",
+ "unicode-segmentation",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "wayland-backend",
+ "wayland-client",
+ "wayland-protocols",
+ "wayland-protocols-plasma",
+ "web-sys",
+ "web-time",
+ "windows-sys 0.52.0",
+ "x11-dl",
+ "x11rb",
+ "xkbcommon-dl",
+]
+
+[[package]]
+name = "winnow"
+version = "0.7.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a5364e9d77fcdeeaa6062ced926ee3381faa2ee02d3eb83a5c27a8825540829"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "wit-bindgen"
+version = "0.46.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f17a85883d4e6d00e8a97c586de764dabcc06133f7f1d55dce5cdc070ad7fe59"
+
 [[package]]
 name = "wolf_render"
 version = "0.1.0"
@@ -392,10 +1954,69 @@ dependencies = [
  "memfile",
  "memmap2",
  "shared_memory",
+ "softbuffer",
  "wayland-client",
  "wayland-protocols",
+ "winit",
 ]
 
+[[package]]
+name = "x11-dl"
+version = "2.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "38735924fedd5314a6e548792904ed8c6de6636285cb9fec04d5b1db85c1516f"
+dependencies = [
+ "libc",
+ "once_cell",
+ "pkg-config",
+]
+
+[[package]]
+name = "x11rb"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9993aa5be5a26815fe2c3eacfc1fde061fc1a1f094bf1ad2a18bf9c495dd7414"
+dependencies = [
+ "as-raw-xcb-connection",
+ "gethostname",
+ "libc",
+ "libloading",
+ "once_cell",
+ "rustix 1.1.2",
+ "x11rb-protocol",
+]
+
+[[package]]
+name = "x11rb-protocol"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea6fc2961e4ef194dcbfe56bb845534d0dc8098940c7e5c012a258bfec6701bd"
+
+[[package]]
+name = "xcursor"
+version = "0.3.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bec9e4a500ca8864c5b47b8b482a73d62e4237670e5b5f1d6b9e3cae50f28f2b"
+
+[[package]]
+name = "xkbcommon-dl"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d039de8032a9a8856a6be89cea3e5d12fdd82306ab7c94d74e6deab2460651c5"
+dependencies = [
+ "bitflags 2.10.0",
+ "dlib",
+ "log",
+ "once_cell",
+ "xkeysym",
+]
+
+[[package]]
+name = "xkeysym"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9cc00251562a284751c9973bace760d86c0276c471b4be569fe6b068ee97a56"
+
 [[package]]
 name = "zerocopy"
 version = "0.8.27"
diff --git a/Cargo.toml b/Cargo.toml
index 8264814..931aa23 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,5 +8,7 @@ libc = "0.2.177"
 memfile = "0.3.2"
 memmap2 = "0.9.9"
 shared_memory = "0.12.4"
+softbuffer = "0.4.8"
 wayland-client = "0.31"
 wayland-protocols = { version = "0.32.9", features = ["client"] }
+winit = "0.30.12"
diff --git a/src/main.rs b/src/main.rs
index 2105cf9..57de8d8 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,166 @@
-fn main () {
-    println!("Hello World!");
+use core::f64;
+use std::{num::NonZeroU32, time::Duration, u32};
+
+use softbuffer::{Buffer, Context, Rect, Surface};
+use winit::{self, event_loop::EventLoop, window::Window};
+
+const SCREEN_WIDTH: usize = 1920;
+const SCREEN_HEIGHT: usize = 1080;
+const STRIDE: u32 = SCREEN_WIDTH as u32;
+const PIXELS: usize = SCREEN_WIDTH * SCREEN_HEIGHT;
+
+type Pixel = u32;
+type Subpixels = (u8, u8, u8);
+struct Point2D(u32, u32);
+
+impl Point2D {
+    fn to_canvas_coordinates(&self) -> Point3D {
+        todo!();
+    }
+
+    fn distance(self, p2: &Point2D) -> f64 {
+        let p1 = self;
+        // Pythagorean formula
+        f64::sqrt((u32::pow(p2.0.max(p1.0) - p1.0.min(p2.0), 2) + u32::pow(p2.1.max(p1.1) - p1.1.min(p2.1), 2)) as f64)
+    }
 }
+
+#[derive(Debug)]
+struct Point3D(f64, f64, f64);
+impl Point3D {
+    fn to_screen_coordinates(&self) -> Point2D {
+        let Point3D(x, y, z) = *self;
+
+        // Normalize to the interval [0, 1]
+        let x = (x / f64::MAX + 1.0) / 2.0;
+        let y = (-y / f64::MAX + 1.0) / 2.0;
+        let z = (z / f64::MAX + 1.0) / 2.0;
+
+        assert!(x <= 1.0 && y <= 1.0 && z <= 1.0);
+
+        if self.2 == 0.0 {
+            Point2D(
+                (x * (SCREEN_WIDTH - 1) as f64) as u32, // Scale to the interval [0, SCREEN_WIDTH)
+                (y * (SCREEN_HEIGHT - 1) as f64) as u32, // Scale to the interval [0, SCREEN_HEIGHT)
+            )
+        } else {
+            let x = x / z;
+            let y = y / z;
+
+            Point2D(
+                (x * (SCREEN_WIDTH - 1) as f64) as u32,
+                (y * (SCREEN_HEIGHT - 1) as f64) as u32,
+            )
+        }
+    }
+
+    fn distance(self, p2: &Point3D) -> f64 {
+        let p1 = self;
+        // Pythagorean formula
+        f64::sqrt(
+            f64::powf(p2.0 - p1.0, 2.0) + f64::powf(p2.1 - p1.1, 2.0) + f64::powf(p2.2 - p1.2, 2.0),
+        )
+    }
+}
+
+#[derive(Debug)]
+struct Object {
+    // Invariants:
+    // Every vertex in edges must have a corresponding vertex in vertices
+    vertices: Vec<Point3D>,
+    edges: Vec<(Point3D, Point3D)>,
+}
+
+type Scene = Vec<Object>;
+
+fn to_rgb((red, green, blue): Subpixels) -> Pixel {
+    let mut pixel: u32 = 0;
+    pixel += blue as u32;
+    pixel += 256 * green as u32;
+    pixel += 256 * 256 * red as u32;
+
+    pixel
+}
+
+fn set_scene(t: u128, scene: &mut Scene) {
+    for obj in scene {
+        obj.vertices.push(Point3D(t as f64, t as f64, t as f64));
+    }
+}
+
+fn render(t: u128, scene: &Scene, buf: &mut [u32]) {
+    for (idx, pix) in buf.iter_mut().enumerate() {
+        *pix = to_rgb((255, 255, 255));
+
+    }
+    for obj in scene {
+        'i: for vertex in &obj.vertices {
+            dbg!(&vertex);
+            let vertex = vertex.to_screen_coordinates();
+            let x = vertex.0;
+            let y = vertex.1;
+            dbg!(x, y);
+            for i in [-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] {
+                for j in [-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] {
+                    let x = x as i32 + i;
+                    let y = y as i32 + j;
+                    buf[(x + y * STRIDE as i32) as usize] =  to_rgb((0, 0, 0));
+                }
+            }
+        }
+    }
+}
+
+fn main() {
+    println!("Hello World!");
+    let event_loop = EventLoop::new().expect("Couldn't initialise event loop");
+    let display = event_loop.owned_display_handle();
+    let ctx = Context::new(display).expect("Couldn't create display context");
+
+    // const WINDOW_ATTRIBUTES = WindowAttributes {
+    // inner_size
+    // };
+    let window = event_loop
+        .create_window(Window::default_attributes())
+        .expect("Couldn't create a window");
+
+    // TODO:
+    // let window = event_loop.create_window(WINDOW_ATTRIBUTES);
+
+    let mut surface = Surface::new(&ctx, &window).expect("Couldn't create surface");
+    surface
+        .resize(
+            NonZeroU32::new(SCREEN_WIDTH as u32).unwrap(),
+            NonZeroU32::new(SCREEN_HEIGHT as u32).unwrap(),
+        )
+        .expect("Couldn't resize surface");
+
+    let mut t: u128 = 0;
+
+    let scene = vec![Object {
+        vertices: vec![
+            Point3D(0.0, f64::MAX / 2.0, 0.0),
+
+            Point3D(f64::MAX / 2.0, -f64::MAX / 2.0, 0.0),
+            Point3D(-f64::MAX / 2.0, -f64::MAX / 2.0, 0.0),
+            // Point3D(0.0, 0.0, f64::MAX / 2.0),
+        ],
+        edges: vec![],
+    }];
+
+    loop {
+
+        let mut sbuffer = surface.buffer_mut().expect("Couldn't create buffer");
+        render(t, &scene, &mut *sbuffer);
+        t += 1;
+
+        sbuffer.present_with_damage(&[Rect {
+            x: 0,
+            y: 0,
+            width: NonZeroU32::new(SCREEN_WIDTH as u32).unwrap(),
+            height: NonZeroU32::new(SCREEN_HEIGHT as u32).unwrap()
+        }]).unwrap();
+    }
+}
+
+mod tests;
diff --git a/src/tests/mod.rs b/src/tests/mod.rs
new file mode 100644
index 0000000..7e2411e
--- /dev/null
+++ b/src/tests/mod.rs
@@ -0,0 +1,27 @@
+use core::f64;
+
+#[cfg(test)]
+use super::*;
+
+/////
+/// testing to_screen_coordinates()
+/////
+#[test]
+fn origin_test() {
+    let zero_point = Point3D (0.0, 0.0, 0.0);
+
+    let result = zero_point.to_screen_coordinates();
+
+    assert!(result.0 <= SCREEN_WIDTH as u32);
+    assert!(result.1 <= SCREEN_HEIGHT as u32);
+}
+
+#[test]
+fn endpoint_test() {
+    let end_point = Point3D (f64::MAX, f64::MAX, f64::MAX);
+
+    let result = end_point.to_screen_coordinates();
+
+    assert!(result.0 < SCREEN_WIDTH as u32);
+    assert!(result.1 < SCREEN_HEIGHT as u32);
+}