<div dir="ltr">you need to do it in html while setting the bg in vtk.js with an opacity of 0 like [0,0,0,0]</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Feb 26, 2019 at 7:24 PM Jounly <<a href="mailto:lihouxing0710@gmail.com">lihouxing0710@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi,<br>
   As the title, how can i set a gradient background when using vtk.js?<br>
I use the way below to set the background color, but it's not gradient.<br>
Could anyone give me a hint on this?<br>
/<br>
const fullScreenRenderer =<br>
vtkFullScreenRenderWindow.newInstance({background:[0,0,0]});/<br>
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