From 8c1ab8525781e4f8dd20c0408f4a4b6b370ee7d3 Mon Sep 17 00:00:00 2001
From: Daniel Thompson <daniel@redfelineninja.org.uk>
Date: Mon, 28 Dec 2020 14:27:10 +0000
Subject: draw565: Fix bug in the straight line optimization

Currently the line drawing code does not draw the final pixel of
straight lines. Thus a line from (0, 0) to (10, 10) finishes on a
different pixel to (10, 0) to (10, 10).

Fix this by removing the spurious subtract one from the end point

Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>

diff --git a/wasp/draw565.py b/wasp/draw565.py
index 2bb72ba..f55977d 100644
--- a/wasp/draw565.py
+++ b/wasp/draw565.py
@@ -395,8 +395,8 @@ class Draw565(object):
             if x1 < x0 or y1 < y0:
                 x0, x1 = x1, x0
                 y0, y1 = y1, y0
-            w = width if dx == 0 else (dx + width - 1)
-            h = width if dy == 0 else (-dy + width - 1)
+            w = width if dx == 0 else (dx + width)
+            h = width if dy == 0 else (-dy + width)
             self.fill(color, x0, y0, w, h)
             return
         while True:
-- 
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