Perl SVG绘图怎么设置背景色

#!/usr/bin/perl

use strict;

use warnings;

use SVG;

# create an SVG object with a size of 40x40 pixels

my $svg = SVG->new(

width => 40,

height => 40,

);

# add a circle

$svg->circle(

cx => 20,

cy => 20,

r => 15,

style => {

'fill' => 'rgb(255, 0, 0)',

'stroke' => 'blue',

'stroke-width' => 5,

'stroke-opacity' => 1,

'fill-opacity' => 1,

}

);

#my $text1 = $svg->text(

# #id => 'l1',

# x => 10,

# y => 10

#)->cdata('hello, world');

# now render the SVG object, implicitly use svg namespace

#print $svg->xmlify;

my $out = $svg->xmlify;

open SF, ">tmp.svg";

print SF $out;

老师，利用上面的代码创建一个 width => 40,height => 40,的画布，但是怎么设置画布的背景色呢，我看官网上也没有说明！画出来是下面这样的图

老师用SVG比较少，你可以自学svg：http://www.w3school.com.cn/svg/index.asp

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擅长：重测序,遗传进化,转录组,GWAS | 采纳率 9% | 回答于 2019-01-08 09:33

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