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Rounding issue in setupInternalCanvasMatrix()
See original GitHub issueVersion 1.6.5
There’s a problem in setupInternalCanvasMatrix() where a rounding issue can occur causing internalCanvas and rootView sizes to not match. This leads to some blurring issues at the bottom of BlurView.
This is down to using roundingScaleFactor during internalCanvas.scale() for height instead of the ‘real’ height scale factor.
I’ve fixed on my side by producing:
float nonRoundingScaleFactorHeight = (float) rootView.getHeight() / internalCanvas.getHeight();
and using that for scaling:
internalCanvas.scale(1 / scaleFactor, 1 / nonRoundingScaleFactorHeight);
It might be worth looking into.
Issue Analytics
- State:
- Created 3 years ago
- Comments:7 (4 by maintainers)
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@Mickey34
rootViewheight shouldn’t be used, it’s just that the OP has rootView and BlurView of the same size. You should use BlurView’s height to make that trick workI’m not sure what to do here TBH. It’s obviously a bug and looks bad, however your fix is potentially squeezing/stretching the resulting image on the vertical axis. On the blurred version it’s not that noticeable, so I might go for it