对于家庭项目,我需要将 (x,y) 坐标绘制到 400x400 黑白位图上。
你会推荐什么 perl 模块,什么图像格式(GIF?、PNG?其他?)在 OS X、Windows、Linux 上最容易处理?
编辑 我的解决方案,基于 GD,由 Brian Agnew 推荐
use strict;
use warnings;
use GD;
my $BitMap = GD::Image->new(400,400);
my $white = $BitMap->colorAllocate(255,255,255);
my $black = $BitMap->colorAllocate(0,0,0);
# Frame the BitMap
$BitMap->rectangle(0,0,399,399,$black);
# Transparent image, white background color
$BitMap->transparent($white);
# plot some, just to show it works #
for my $x (0..100) {
for my $y (0 .. 100) {
$BitMap->setPixel(250+100*sin($x)-$y,150+125*cos($x)+$y,$black);
}
}
# write png-format to file
open my $fh,">","test.png" or die "$!";
binmode $fh;
print $fh $BitMap->png;
close($fh);