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Posted to commits@echarts.apache.org by GitBox <gi...@apache.org> on 2020/04/06 08:49:49 UTC

[GitHub] [incubator-echarts] travis1111 opened a new issue #12389: Graph force layout, drag multiple nodes - how to move multiple node positions?

travis1111 opened a new issue #12389: Graph force layout, drag multiple nodes - how to move multiple node positions?
URL: https://github.com/apache/incubator-echarts/issues/12389

### What problem does this feature solve?
ECharts only support drag a single node in graph force layout. I need to be able drag multiple nodes in my application.

Now I am able to use zrender to draw a rectangle box on the screen, and I have code to determine the nodes that are inside the rectangle box. Now I am stuck at how to move these nodes in the zrender's mousemove event callback.

I tried to call the `data.setItemLayout` but it seems the _itemLayout arrays are changed, but the nodes on the screen did not move.

So how can I move them?

I am also wondering if there is api for my to detect if mousedown is triggered on a node? (in this case, I should not draw the selection box).

Also, is there an API to determine whether a node is visible or not? I want to make sure when I select the nodes, I can ignore the ones that are invisible.

Thanks

### What does the proposed API look like?
NA

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[GitHub] [incubator-echarts] echarts-bot[bot] commented on issue #12389: Graph force layout, drag multiple nodes - how to move multiple node positions?

Posted by GitBox <gi...@apache.org>.

echarts-bot[bot] commented on issue #12389: Graph force layout, drag multiple nodes - how to move multiple node positions?
URL: https://github.com/apache/incubator-echarts/issues/12389#issuecomment-609661424

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