I am trying to use
the Image module to do some bitmap conversions (pretty simple, just invert,
rotate and set transparency) and write to a PDF through
ReportLab.
Here is the line
that's killing me:
proof.drawImage(out,
int(values[2]), int(values[3]), mask = [0,1,0,1,0,1])
Now, in a bitmap,
you have two color options, 0 and 1. I have determined that 0 is white and
1 is black. However, when I use the mask option to attempt to mask the
white in the bitmap when I write it to the PDF, it ends up masking the black
pixels. Well, no problem, I think, I'll just mask the opposite
choice. Wrong! Whether I change the mask to [1,2,1,2,1,2] or
[255,256,255,256,255,256], nothing happens. Is what I'm trying to do even
possible? I have posted the snippet below for your
perusal.
tempimage =
os.path.splitext(values[4])[0] +
'temp.bmp'
print tempimage
im = Image.open(values[4])
print im.format, im.size, im.mode
xval = im.size[0]
yval = im.size[1]
for horiz in range(xval):
for vert in range(yval):
if im.getpixel((horiz, vert)) == 0:
im.putpixel((horiz, vert), 1)
else:
im.putpixel((horiz, vert), 0)
out = im.rotate(180)
proof.drawImage(out, int(values[2]), int(values[3]), mask = [0,1,0,1,0,1])
out.save(tempimage, 'BMP')
print tempimage
im = Image.open(values[4])
print im.format, im.size, im.mode
xval = im.size[0]
yval = im.size[1]
for horiz in range(xval):
for vert in range(yval):
if im.getpixel((horiz, vert)) == 0:
im.putpixel((horiz, vert), 1)
else:
im.putpixel((horiz, vert), 0)
out = im.rotate(180)
proof.drawImage(out, int(values[2]), int(values[3]), mask = [0,1,0,1,0,1])
out.save(tempimage, 'BMP')
- Mark Daley
_______________________________________________ Image-SIG maillist - [email protected] http://mail.python.org/mailman/listinfo/image-sig
