Bugs item #1510885, was opened at 2006-06-22 12:24
Message generated for change (Comment added) made by josiahcarlson
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Josiah Carlson (josiahcarlson)
Assigned to: Nobody/Anonymous (nobody)
Summary: pyx draws bitmaps incorrectly
Initial Comment:
Running the following script should produce a series of
blocks of the 256 shades of grey between and including
black and white.
import pyx
pbb = pyx.bitmap.bitmap
pbi = pyx.bitmap.image
c = pyx.canvas.canvas()
for i in xrange(256):
c.insert(pbb(.5*(i&15), .5*(i>>4),
pbi(10,10,"L",100*chr(i)), height=.5))
c.writePDFfile('test.pdf')
Instead, it produces either an all-white or all-black
image at random. This is the case when using Windows
2000, Python 2.3 and 2.4, and is verifiable in both
Adobe Acrobat 7 and Foxit Reader 1.3 . Adjusting the
above code as necessary for RGB images does not fix the
problem.
The problem exists for the two most recent versions of PyX.
----------------------------------------------------------------------
>Comment By: Josiah Carlson (josiahcarlson)
Date: 2006-06-22 16:28
Message:
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A work-around is to create a temporary canvas, insert the
image into the temporary canvas, and insert the temporary
canvas into the main canvas.
----------------------------------------------------------------------
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