Linear gradient across SVG line

问题

I am wondering about possibility to make linearGradient across (from top to bottom) the line, as opposed to the example below where the gradient goes along (from left to right) the line.

<svg xmlns="http://www.w3.org/2000/svg" version="1">
<defs>
    <linearGradient id="e" x1="40" y1="210" x2="460" y2="210" gradientUnits="userSpaceOnUse">
        <stop stop-color="steelblue" offset="0" />
        <stop stop-color="red" offset="1" />
    </linearGradient>
</defs>
 <line x1="40" y1="210" x2="460" y2="210" stroke="url(#e)" stroke-width="30" />
</svg>

Changing y coordinates works nicely for unrotated line and linearGradient now goes across (from top to bottom) the line:

<svg xmlns="http://www.w3.org/2000/svg" version="1">
<defs>
    <linearGradient id="e" x1="40" y1="195" x2="40" y2="225" gradientUnits="userSpaceOnUse">
        <stop stop-color="steelblue" offset="0" />
        <stop stop-color="red" offset="1" />
    </linearGradient>
</defs>
 <line x1="40" y1="210" x2="460" y2="210" stroke="url(#e)" stroke-width="30"/> 
</svg>

But doesn't work for rotated:

<svg xmlns="http://www.w3.org/2000/svg" version="1">
<defs>
    <linearGradient id="e" x1="40" y1="235" x2="40" y2="265" gradientUnits="userSpaceOnUse">
        <stop stop-color="steelblue" offset="0" />
        <stop stop-color="red" offset="1" />
    </linearGradient>
</defs>
 <line x1="40" y1="210" x2="460" y2="290" stroke="url(#e)" stroke-width="30"/> 
</svg>

And what I want to have is the rotated line with liear gradient across it. Smth like this:

回答1:

Do you mean rotate the gradient? Then use gradientTransform

<svg xmlns="http://www.w3.org/2000/svg" version="1">
<defs>
    <linearGradient id="e" x1="40" y1="210" x2="460" y2="210" gradientUnits="userSpaceOnUse" gradientTransform="rotate(90)">
        <stop stop-color="steelblue" offset="0" />
        <stop stop-color="red" offset="1" />
    </linearGradient>
</defs>
 <line x1="40" y1="210" x2="460" y2="210" stroke="url(#e)" stroke-width="30" />
</svg>

来源：https://stackoverflow.com/questions/42874203/linear-gradient-across-svg-line

标签

svg

line

linear-gradients