diff --git a/main.zig b/main.zig
index bb9d3fe..d3f1b3a 100644
--- a/main.zig
+++ b/main.zig
@@ -130,18 +130,19 @@ fn fillBuffer() !void {
     var buf = std.mem.zeroes([2]u8);
     var slice: []u8 = undefined;
     var bytes_written: u3 = 0;
+    var buffer_size: u32 = 0;
 
     buf[0] = 0;
-    w = try getTermDimension();
-    const file = try std.fs.cwd().createFile("buffer.out", .{});
-    defer file.close();
 
-    var buffer = try allocator.alloc(u8, w.ws_row * w.ws_col * 4); //utf-8 can be 4 bytes long
+    w = try getTermDimension();
+    buffer_size = w.ws_row;
+    buffer_size = buffer_size * w.ws_col * 4;
+    var buffer = try allocator.alloc(u8, buffer_size); //utf-8 can be 4 bytes long
     defer allocator.free(buffer);
 
     var vec = Vec3{
         .a = Point{ .x = 20, .y = 30, .z = 0, .direction = .{ .x = 1, .y = 1, .z = 1 } },
-        .b = Point{ .x = 50, .y = 30, .z = 0, .direction = .{ .x = 1, .y = 1, .z = 1 } },
+        .b = Point{ .x = 50, .y = 40, .z = 0, .direction = .{ .x = 1, .y = 1, .z = 1 } },
         .c = Point{ .x = 30, .y = 1, .z = 0, .direction = .{ .x = 1, .y = 1, .z = 1 } },
     };
     var vec2 = Vec3{
@@ -166,7 +167,7 @@ fn fillBuffer() !void {
         //_ = try bresenham(buffer, w, Point{ .x = 10, .y = 10, .z = 0 }, Point{ .x = 30, .y = 12, .z = 0 });
 
         try out.print("\x1B[2J", .{});
-        //sleep(1000000);
+        //sleep(100000);
 
         try triangle(buffer, w, vec);
         bounce(w, &vec.a, 'x');
@@ -233,6 +234,7 @@ fn pixel(buffer: []u8, w: Winsize, x: i64, y: i64, symbol: u21) !void {
     if (i < buffer.len) { //-1 ??
         const slice = buffer[i .. i + 4];
         _ = try std.unicode.utf8Encode(symbol, slice);
+        //TODO: check length, set not used bytes to zero
     } else {
         //print("Error illegal memory access\n", .{});
     }