implement polygon

a bug in the fill algorythm where it fills every

primitives.zig

@@ -106,6 +106,19 @@ test "test linked list" {
     }
     std.debug.print("next:{}\n", .{polygon.next()});
     std.debug.print("next:{}\n", .{polygon.next()});
+    std.debug.print("typeof:{}\n", .{@TypeOf(polygon)});
+}
+
+pub fn polygon_draw(buf: []u8, w: Winsize, poly: *LinkedList()) !void {
+    var i: u8 = 0;
+    var previous: Point = poly.next();
+    var current: Point = undefined;
+
+    while (i < poly.length) : (i += 1) {
+        current = poly.next();
+        try bresenham(buf, w, previous, current);
+        previous = current;
+    }
 }
 
 pub fn pixel(buffer: []u8, w: Winsize, x: i64, y: i64, symbol: u21) !void {