Fix error when spectrum height is 0

jledet / waterfall

HTML Canvas Waterfall Plot

MIT License

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Closed AndersKaloer closed 5 years ago

AndersKaloer commented 5 years ago

Pressing "w" until spectrum height is 0 causes CanvasRenderingContext2D.drawImage() to fail with an unrecoverable error.

This pull request solves the problem.

jledet commented 5 years ago

Thanks. Should be fixed as part of 3dc1e893f39b6aed271fc713678b5d4eb160e1b9 pushed 2 minutes after your PR :)

AndersKaloer commented 5 years ago

At least I was first :)