Is there an alternative to beginTransparencyLayer?

General JUCE discussion
1

It’s very very slow. I’d like to clip (reduce clip region) and get out of that clip for more drawing, but I can’t find a way to make it without transparency layer. Is there a way to revert that clip? I tried reverse windings but I had no success

2

Try this:

{
    juce::Graphics::ScopedSaveState	ss ( g );

    juce::Path	p;

    // Clip to ellipse
    p.addEllipse ( b.reduced ( 5.0f ) );
    g.reduceClipRegion ( p );

    g.drawImage ( img, b, 0 );
}

The ScopedSaveState save the current state of the graphics context. Then you reduce the clip region, draw whatever you want and leave the scope.

Afterwards, the clip-region is restored to it’s former shape/size.

Alternatively you can also sandwich your clipped draw-calls between a

g.saveState (); and a g.restoreState () call. Same thing.

2 Likes
3

life saver!