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| author | Daniel Thompson <daniel@redfelineninja.org.uk> | 2020-12-28 14:27:10 (GMT) |
|---|---|---|
| committer | Daniel Thompson <daniel@redfelineninja.org.uk> | 2020-12-28 14:27:10 (GMT) |
| commit | 8c1ab8525781e4f8dd20c0408f4a4b6b370ee7d3 (patch) | |
| tree | 082b057aba2a73c7ecdede6a762250c74fcc1d1d | |
| parent | 6d74d4f585d3b9d8706da0c9584a8a87e5133c97 (diff) | |
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>
| -rw-r--r-- | wasp/draw565.py | 4 |
1 files changed, 2 insertions, 2 deletions
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: |