Guess I found a better one using clip paths instead of clip regions, what avoids any issues with huge rectangle lists.
Fixed in SVN,
Uwe
Added after 4 minutes:
Originally Posted by
john_k
Here is an example.
One comment about RasterData::setXInterval() in your demo: here you are excluding 2 * M_PI, but including 0.0.
In certain zoom levels 2 * M_PI happens leading to a vertical line with missing RGB values. I would recommend to allow 2 * M_PI instead:
setInterval( Qt::XAxis, QwtInterval( 0, 2 * M_PI ), QwtInterval::IncludeBorders );
setInterval( Qt::XAxis, QwtInterval( 0, 2 * M_PI ), QwtInterval::IncludeBorders );
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Uwe
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