custom components with offline viewer.min.js

[code-paster]

I'm trying to render diagrams without a network connection using viewer.min.js. Everything works fine with some test diagrams using rectangles and text and such. Then I tried a cylinder shape (shape=mxgraph.flowchart.direct_data) but it just rendered as a rectangle.

Can I embed custom shape XML into my HTML?
Can I direct viewer.min.js to get shapes from a local file?

Thanks for any info!