hoshmn opened a new issue #13147:
URL: https://github.com/apache/incubator-echarts/issues/13147
### What problem does this feature solve?
I would like to use focusNodeAdjacency, but the "non-focused" nodes are too
transparent. I can currently specify itemStyles for 'emphasis' nodes; it would
be great if I could also specify itemStyles for 'deemphasis' (downplay?) nodes
(or the mask that goes over them).
### What does the proposed API look like?
```javascript
series: [{
name: 's1',
...
itemStyle: {
emphasis: { ... } // exists
downplay: { // proposed
maskOpacity: 0.4 // could either allow specifying the opacity of the
mask over the non-focused nodes
color: 'rgba(0, 0, 0, 0.4)' // or setting the node color/styles
directly (though this would be less helpful on its own, as node colors may vary
across the series)
}
}
}]
```
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