diff --git a/main.zig b/main.zig
index 9f0698d..6bc5e7d 100644
--- a/main.zig
+++ b/main.zig
@@ -130,27 +130,26 @@ fn fillBuffer() !void {
     }
     try pixel(buffer, w, 5, 10, '\u{1F702}');
     const vec = Vec3{
-        .a = Point{ .x = 0, .y = 1, .z = 2 },
-        .b = Point{ .x = 0, .y = 1, .z = 20 },
-        .c = Point{ .x = 0, .y = 1, .z = 2 },
+        .a = Point{ .x = 20, .y = 20, .z = 0 },
+        .b = Point{ .x = 50, .y = 30, .z = 0 },
+        .c = Point{ .x = 30, .y = 1, .z = 0 },
     };
-    _ = vec;
-    //triangle(vec);
-    _ = try bresenham(buffer, w, Point{ .x = 10, .y = 10, .z = 0 }, Point{ .x = 30, .y = 12, .z = 0 });
-    _ = try bresenham(buffer, w, Point{ .x = 10, .y = 10, .z = 0 }, Point{ .x = 30, .y = 28, .z = 0 });
-    _ = try bresenham(buffer, w, Point{ .x = 10, .y = 10, .z = 0 }, Point{ .x = 30, .y = 30, .z = 0 });
-    _ = try bresenham(buffer, w, Point{ .x = 10, .y = 10, .z = 0 }, Point{ .x = 30, .y = 39, .z = 0 });
-    _ = try bresenham(buffer, w, Point{ .x = 30, .y = 30, .z = 0 }, Point{ .x = 60, .y = 10, .z = 0 });
-    _ = try bresenham(buffer, w, Point{ .x = 60, .y = 30, .z = 0 }, Point{ .x = 70, .y = 5, .z = 0 });
-    _ = try bresenham(buffer, w, Point{ .x = 100, .y = 20, .z = 0 }, Point{ .x = 30, .y = 30, .z = 0 });
-    _ = try bresenham(buffer, w, Point{ .x = 100, .y = 10, .z = 0 }, Point{ .x = 90, .y = 40, .z = 0 });
-    _ = try bresenham(buffer, w, Point{ .x = 100, .y = 30, .z = 0 }, Point{ .x = 90, .y = 10, .z = 0 });
-    _ = try bresenham(buffer, w, Point{ .x = 100, .y = 30, .z = 0 }, Point{ .x = 60, .y = 10, .z = 0 });
+    try triangle(buffer, w, vec);
+    //_ = try bresenham(buffer, w, Point{ .x = 10, .y = 10, .z = 0 }, Point{ .x = 30, .y = 12, .z = 0 });
+    //_ = try bresenham(buffer, w, Point{ .x = 10, .y = 10, .z = 0 }, Point{ .x = 30, .y = 28, .z = 0 });
+    //_ = try bresenham(buffer, w, Point{ .x = 10, .y = 10, .z = 0 }, Point{ .x = 30, .y = 30, .z = 0 });
+    //_ = try bresenham(buffer, w, Point{ .x = 10, .y = 10, .z = 0 }, Point{ .x = 30, .y = 39, .z = 0 });
+    //_ = try bresenham(buffer, w, Point{ .x = 30, .y = 30, .z = 0 }, Point{ .x = 60, .y = 10, .z = 0 });
+    //_ = try bresenham(buffer, w, Point{ .x = 60, .y = 30, .z = 0 }, Point{ .x = 70, .y = 5, .z = 0 });
+    //_ = try bresenham(buffer, w, Point{ .x = 100, .y = 20, .z = 0 }, Point{ .x = 30, .y = 30, .z = 0 });
+    //_ = try bresenham(buffer, w, Point{ .x = 100, .y = 10, .z = 0 }, Point{ .x = 90, .y = 40, .z = 0 });
+    //_ = try bresenham(buffer, w, Point{ .x = 100, .y = 30, .z = 0 }, Point{ .x = 90, .y = 10, .z = 0 });
+    //_ = try bresenham(buffer, w, Point{ .x = 100, .y = 30, .z = 0 }, Point{ .x = 60, .y = 10, .z = 0 });
     try file.writeAll(buffer);
 }
 fn pixel(buffer: []u8, w: Winsize, x: i64, y: i64, symbol: u21) !void {
     const i: usize = @intCast(4 * (x + y * w.ws_col));
-    if (i < buffer.len) {
+    if (i < buffer.len) { //-1 ??
         const slice = buffer[i .. i + 4];
         _ = try std.unicode.utf8Encode(symbol, slice);
     } else {
@@ -160,12 +159,8 @@ fn pixel(buffer: []u8, w: Winsize, x: i64, y: i64, symbol: u21) !void {
 fn bresenham(buf: []u8, w: Winsize, p1: Point, p2: Point) !void {
     var x: i32 = p1.x;
     var y: i32 = p1.y;
-    //var x: i32 = 0;
-    //var y: i32 = 0;
     const dx = (p2.x - p1.x);
-    print("p2: {} - {},{}\n", .{ p2.y, p1.y, p2.y - p1.y });
     const dy = (p2.y - p1.y);
-    //const slope = dx/dy;
     var er: i64 = 0;
     if (dx >= dy and dy > 0 and dx > 0) {
         while (x <= p2.x) : (x += 1) {
@@ -232,16 +227,19 @@ fn bresenham(buf: []u8, w: Winsize, p1: Point, p2: Point) !void {
         }
     } else if (dx > dy and dy < 0 and dx < 0) {
         while (y >= p2.y) : (y -= 1) {
+            print("x:{},y:{},er:{},dx:{},dy:{}\n", .{ x, y, er, dx, dy });
             _ = try pixel(buf, w, x, y, '8');
             er += @abs(dx);
             if (2 * er >= @abs(dx)) {
                 x -= 1;
-                er -= @abs(dx);
+                er -= @abs(dy);
             }
         }
     }
 }
 
-//fn triangle(vec: Vec3) void {
-
-//}
+fn triangle(buffer: []u8, w: Winsize, vec: Vec3) !void {
+    _ = try bresenham(buffer, w, vec.a, vec.b);
+    _ = try bresenham(buffer, w, vec.b, vec.c);
+    _ = try bresenham(buffer, w, vec.c, vec.a);
+}