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Time for an 2014 update…

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Ingy döt Net 2014-01-17 05:32:22 +00:00
parent 372c577f83
commit 09687c4926
2520 changed files with 34227 additions and 7318 deletions
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28
Task/Bitmap-Bresenhams-line-algorithm/Perl/bitmap-bresenhams-line-algorithm.pl
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@ -8,12 +8,12 @@ sub my_draw_line
my $steep = (abs($y1 - $y0) > abs($x1 - $x0));
if ( $steep ) {
( $y0, $x0 ) = ( $x0, $y0);
( $y1, $x1 ) = ( $x1, $y1 );
( $y0, $x0 ) = ( $x0, $y0);
( $y1, $x1 ) = ( $x1, $y1 );
}
if ( $x0 > $x1 ) {
( $x1, $x0 ) = ( $x0, $x1 );
( $y1, $y0 ) = ( $y0, $y1 );
( $x1, $x0 ) = ( $x0, $x1 );
( $y1, $y0 ) = ( $y0, $y1 );
}
my $deltax = $x1 - $x0;
my $deltay = abs($y1 - $y0);
@ -23,16 +23,16 @@ sub my_draw_line
my $x;
$ystep = ( $y0 < $y1 ) ? 1 : -1;
for( $x = $x0; $x <= $x1; $x += 1 ) {
if ( $steep ) {
$img->draw_point($y, $x);
} else {
$img->draw_point($x, $y);
}
$error -= $deltay;
if ( $error < 0 ) {
$y += $ystep;
$error += $deltax;
}
if ( $steep ) {
$img->draw_point($y, $x);
} else {
$img->draw_point($x, $y);
}
$error -= $deltay;
if ( $error < 0 ) {
$y += $ystep;
$error += $deltax;
}
}
}