Lerking/png2svg
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Added -o/--opaque flag to ignore fully transparent pixels.

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Ian Mackinnon
2011-05-04 22:44:47 +01:00
parent 9b2e0062cd
commit 0e465617aa
1 changed files with 12 additions and 7 deletions
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19
png2svg.py
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@@ -47,7 +47,7 @@ def svg_header(width, height):
xmlns="http://www.w3.org/2000/svg" version="1.1">
""" % (width, height)
def rgba_image_to_svg_pixels(im):
def rgba_image_to_svg_pixels(im, opaque=None):
s = StringIO()
s.write(svg_header(*im.size))
@@ -56,6 +56,8 @@ def rgba_image_to_svg_pixels(im):
for y in range(height):
here = (x, y)
rgba = im.getpixel(here)
if opaque and not rgba[3]:
continue
s.write(""" <rect x="%d" y="%d" width="1" height="1" style="fill:rgb%s; fill-opacity:%.3f; stroke:none;" />\n""" % (x, y, rgba[0:3], float(rgba[3]) / 255))
s.write("""</svg>\n""")
return s.getvalue()
@@ -98,7 +100,7 @@ def joined_edges(assorted_edges):
return pieces
def rgba_image_to_svg_contiguous(im):
def rgba_image_to_svg_contiguous(im, opaque=None):
# collect contiguous pixel groups
@@ -114,6 +116,8 @@ def rgba_image_to_svg_contiguous(im):
if visited.getpixel(here):
continue
rgba = im.getpixel((x, y))
if opaque and not rgba[3]:
continue
piece = []
queue = [here]
visited.putpixel(here, 1)
@@ -200,7 +204,7 @@ def rgba_image_to_svg_contiguous(im):
def png_to_svg(filename, contiguous=False):
def png_to_svg(filename, contiguous=None, opaque=None):
try:
im = Image.open(filename)
except IOError, e:
@@ -209,17 +213,18 @@ def png_to_svg(filename, contiguous=False):
im_rgba = im.convert('RGBA')
if contiguous:
return rgba_image_to_svg_contiguous(im_rgba)
return rgba_image_to_svg_contiguous(im_rgba, opaque)
else:
return rgba_image_to_svg_pixels(im_rgba)
return rgba_image_to_svg_pixels(im_rgba, opaque)
if __name__ == "__main__":
parser = OptionParser()
parser.add_option("-p", "--pixels", action="store_false", dest="contiguous", help="Generate a separate shape for each pixel; do not group pixels into contiguous areas of the same colour", default=True)
parser.add_option("-v", "--verbose", action="store_true", dest="verbosity", help="Print verbose information for debugging", default=None)
parser.add_option("-q", "--quiet", action="store_false", dest="verbosity", help="Suppress warnings", default=None)
parser.add_option("-p", "--pixels", action="store_false", dest="contiguous", help="Generate a separate shape for each pixel; do not group pixels into contiguous areas of the same colour", default=True)
parser.add_option("-o", "--opaque", action="store_true", dest="opaque", help="Opaque only; do not create shapes for fully transparent pixels. ", default=None)
(options, args) = parser.parse_args()
@@ -229,4 +234,4 @@ if __name__ == "__main__":
log.setLevel(logging.ERROR)
assert len(args) == 1, "Usage: %s [FILE]"
print png_to_svg(args[0], contiguous=options.contiguous)
print png_to_svg(args[0], contiguous=options.contiguous, opaque=options.opaque)