Package: libpngwriter0c2
Version: 0.5.3-3
Severity: normal
The filleddiamond() method seems to miss the top-most pixel sometimes.
For example the diamond.cc program below writes /tmp/foo.png containing
" ",
" . ",
" . . ... ",
" . . ..... ",
" . . ....... ",
" . . ......... ",
" . . ....... ",
" . . ..... ",
" . . ... ",
" . . ",
" "
where I expected the filleddiamond() on the right to have the same top
pixel as the unfilled on the left.
The "convert" in the diamond.cc is from imagemagick, just a handy way to
see the .png in text. The png does have the pixels this way, as can be
seen in a viewer with a zoom.
#include <pngwriter.h>
int
main (void)
{
pngwriter foo(40,11, 0, "/tmp/foo.png");
foo.diamond (10,6, 8,8, 1.0,1.0,1.0);
foo.filleddiamond (30,6, 8,8, 1.0,1.0,1.0);
foo.write_png();
system("convert /tmp/foo.png /tmp/foo.xpm; cat /tmp/foo.xpm");
return 0;
}
-- System Information:
Debian Release: wheezy/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.32-5-486
Locale: LANG=en_AU, LC_CTYPE=en_AU (charmap=ISO-8859-1)
Shell: /bin/sh linked to /bin/dash
Versions of packages libpngwriter0c2 depends on:
ii libc6 2.11.1-3 Embedded GNU C Library: Shared lib
ii libgcc1 1:4.6.0-6 GCC support library
ii libstdc++6 4.6.0-6 The GNU Standard C++ Library v3
libpngwriter0c2 recommends no packages.
libpngwriter0c2 suggests no packages.
-- no debconf information
