Nyall Dawson ddd357c2ea Add API to QgsRasterBlock to obtain both pixel value AND no data
flag in a single call

This is much more efficient then making two calls, since the
QgsRasterBlock::isNoData() check internally calls QgsRasterBlock::value().
So by requiring API users to make the two separate calls individually,
we double the time this process takes...
2019-01-22 12:13:39 +11:00
..
2018-09-10 11:41:57 -04:00
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2019-01-01 21:53:37 +01:00