From 0c86164b082d2842d99c3b2d7de15afbad94b789 Mon Sep 17 00:00:00 2001
From: Able <abl3theabove@gmail.com>
Date: Sun, 28 Nov 2021 19:30:17 -0600
Subject: [PATCH] adding in a simple line algorithm

---
 src/graphics_api_impl.rs | 21 ++++++++++-
 src/main.rs              | 75 +++++++++++++++++++++++++++++++---------
 2 files changed, 78 insertions(+), 18 deletions(-)

diff --git a/src/graphics_api_impl.rs b/src/graphics_api_impl.rs
index 3497640..3a0e760 100644
--- a/src/graphics_api_impl.rs
+++ b/src/graphics_api_impl.rs
@@ -1,6 +1,7 @@
 #![allow(dead_code, unused)]
 
 use able_graphics_library::{AglApi, FrameBuffer, Point, HEIGHT, RGBA, WIDTH};
+use mini_gl_fb::glutin::platform::unix::x11::ffi::XK_R10;
 
 #[derive(Clone, Debug, Copy)]
 pub struct GraphicsRenderer {
@@ -23,7 +24,25 @@ impl GraphicsRenderer {
 
 impl AglApi for GraphicsRenderer {
     fn put_line(&mut self, coords_start: Point, coords_end: Point, thickness: u32, color: RGBA) {
-        todo!();
+        // Wikipedia's naive line drawing algorithm
+        let x1 = coords_start.x;
+        let y1 = coords_start.y;
+
+        let x2 = coords_end.x;
+        let y2 = coords_end.y;
+
+        let dx = x2 - x1;
+        let dy = y2 - y1;
+
+        for x in x1..x2 {
+            let y = y1 + dy * (x - x1) / dx;
+
+            let coordinates = x + (WIDTH as u16) * y;
+
+            self.buff[coordinates as usize] = color;
+        }
+
+        // todo!();
     }
     fn put_rect(&mut self, coords_start: Point, coords_end: Point, color: RGBA) {
         todo!();
diff --git a/src/main.rs b/src/main.rs
index dbd4d03..e52eeb8 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,10 @@
 use able_graphics_library::{AglApi, HEIGHT, WIDTH};
 use able_graphics_library::{Point, RGBA};
 use graphics_api_impl::GraphicsRenderer;
+use mini_gl_fb::{
+    config,
+    glutin::{dpi::LogicalSize, event_loop::EventLoop},
+};
 mod graphics_api_impl;
 
 extern crate mini_gl_fb;
@@ -9,36 +13,73 @@ fn main() {
     let mut xyz = GraphicsRenderer::new();
 
     // Create the event loop and framebuffer
-    let (mut event_loop, mut fb) = mini_gl_fb::gotta_go_fast("AGL", WIDTH as f64, HEIGHT as f64);
+    // mini_gl_fb::gotta_go_fast( );
+
+    let mut event_loop = EventLoop::new();
+
+    let mut fb = mini_gl_fb::get_fancy(
+        config! {
+            window_title: String::from("AGL"),
+            window_size: LogicalSize::new(WIDTH as f64, HEIGHT as f64),
+            buffer_size: Some(LogicalSize::new(WIDTH as u32, HEIGHT as u32)),
+            resizable: true
+        },
+        &event_loop,
+    );
 
     // Fill the buffer with something
     let mut buffer = vec![[0, 0, 0, 0]; WIDTH * HEIGHT];
 
     // Use cool fancy drawing api
-    xyz.clear(RGBA {
-        r: 255,
-        g: 255,
-        b: 255,
-        a: 255,
-    });
+    {
+        xyz.clear(RGBA {
+            r: 255,
+            g: 255,
+            b: 255,
+            a: 255,
+        });
 
-    xyz.put_pixel(
-        Point { x: 34, y: 43 },
+        xyz.put_pixel(
+            Point { x: 34, y: 43 },
+            RGBA {
+                r: 123,
+                g: 123,
+                b: 123,
+                a: 123,
+            },
+        );
+
+        xyz.put_pixel(
+            Point { x: 346, y: 199 },
+            RGBA {
+                r: 255,
+                g: 0,
+                b: 0,
+                a: 123,
+            },
+        );
+    }
+    xyz.put_line(
+        Point { x: 3, y: 30 },
+        Point { x: 324, y: 50 },
+        1,
         RGBA {
-            r: 123,
-            g: 123,
-            b: 123,
-            a: 123,
+            r: 0,
+            g: 0,
+            b: 0,
+            a: 0,
         },
     );
 
-    xyz.put_pixel(
-        Point { x: 346, y: 199 },
+    xyz.put_line(
+        Point { x: 0, y: 0 },
+        Point { x: 300, y: 200 },
+        1,
         RGBA {
-            r: 255,
+            r: 0,
             g: 0,
             b: 0,
-            a: 123,
+            a: 0,
         },
     );