Last week some readers have kindly supplied ideas and code for a question I had
asked around a form of image data compression required for specialized display
hardware.
I was able to solve my issues for all but one:
The black & white only device (1024 (X) x 1280 (Y)) expects the compressed data
based on portrait mode, i.e. 8 pixels combined into one bytes for 1280 rows of
128 bytes.
This was working well until the desire came up to be able to tilt the display
and use it in landscape mode - now I needed to rotate the text, as Pillow does
not seem to support drawing at angles.
No big deal - or so I thought after discovering rotate:
from PIL import Image, ImageFont, ImageDraw
white = 1
black = 0
img = Image.new('1', (1280, 1024), white) # start in landscape mode since we
need to calc. based on that
draw = ImageDraw.Draw(img)
fontname = 'FreeSansBold.ttf'
# in real life, x and y are calculated to center or align text both vertically
and horizontally
x = 10
y = 500
dfont = ImageFont.truetype(fontname, 96)
draw.text((x, y), 'Hallo world', black, font = dfont)
draw = ImageDraw.Draw(img)
rotimg = img.rotate(270) # rotation is counterclockwise
# i can almost make it work by resizing rotimg here, but the aspect ratio is
then screwed
#rotimg = rotimg.resize((1024, 1280))
rotimg.show()
imagedata = list(rotimg.getdata())
But grabbing data from the rotimg does not work as it does not seem to return
an image with swapped dimensions...
What am I missing?
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