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zoom in/out

Zuotian Tatum requested to merge svg-zoom into master

Fixed #19 (closed).

Basic zoom in to 200% and out to 20%. Use scale tranform.

TODO:

  • need to drag the object once zoomed in.
  • should we reset the zoom level to 0 when loading a new pedigree?
  • tooltip on the level of the zoom.
  • sliding bar?

It is currently difficult to detect a new pedigree document. We can add a unique identifier upon loading a pedigree file. We may have this for free if the pedigree is stored in a document store (object id in mongodb or couchdb). See issue #47.

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