How to draw annotations on svg overlay

[PpyMohan]

i don't how to draw annotations in svgoverlay on openseadragon

[iangilman]

You should be able to draw it like any other SVG. What do you want your annotation to look like? Presumably a <rect> with a <text> inside of it?

[PpyMohan]

Actually i saw some examples using d3js in that I don't know what input type there are using like viewport or image coordinates or web

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On Wed, 7 Aug 2019, 11:09 pm Ian Gilman, ***@***.***> wrote: You should be able to draw it like any other SVG. What do you want your annotation to look like? Presumably a <rect> with a <text> inside of it? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#35?email_source=notifications&email_token=AGBURRFCDKVL6BO2FP3JSN3QDMCFHA5CNFSM4IJ7BZ72YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD3ZFMCA#issuecomment-519198216>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AGBURRA73CWWM57WPMBWBZDQDMCFHANCNFSM4IJ7BZ7Q> .

[iangilman]

This plugin uses viewport coordinates.

[PpyMohan]

Okay how to convert event points to viewport coordinates

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On Wed, 7 Aug 2019, 11:12 pm Ian Gilman, ***@***.***> wrote: This plugin uses viewport coordinates. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#35?email_source=notifications&email_token=AGBURRH3RCXYX65CSRTGZMLQDMCR7A5CNFSM4IJ7BZ72YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD3ZFVYI#issuecomment-519199457>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AGBURRD3LRXGS556R7XJ6C3QDMCR7ANCNFSM4IJ7BZ7Q> .

[PpyMohan]

Hi, Is that possible to keep svgoverlay inside fabricoverlay,

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On Wed, 7 Aug 2019, 11:15 pm Mohanraj R, ***@***.***> wrote: Okay how to convert event points to viewport coordinates On Wed, 7 Aug 2019, 11:12 pm Ian Gilman, ***@***.***> wrote: > This plugin uses viewport coordinates. > > — > You are receiving this because you authored the thread. > Reply to this email directly, view it on GitHub > <#35?email_source=notifications&email_token=AGBURRH3RCXYX65CSRTGZMLQDMCR7A5CNFSM4IJ7BZ72YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD3ZFVYI#issuecomment-519199457>, > or mute the thread > <https://github.com/notifications/unsubscribe-auth/AGBURRD3LRXGS556R7XJ6C3QDMCR7ANCNFSM4IJ7BZ7Q> > . >

[iangilman]

Okay how to convert event points to viewport coordinates

I believe event points are in web coordinates, so it would be:

var viewportPoint = viewer.viewport.viewerElementToViewportCoordinates(eventPoint);

Is that possible to keep svgoverlay inside fabricoverlay

I believe Fabric uses Canvas, which isn't the same as SVG. You wouldn't put one inside the other. It should be fine to run them both on top of each other in the same viewer, though, as far as I know.