100pah opened a new pull request #13358:
URL: https://github.com/apache/incubator-echarts/pull/13358
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## Brief Information
This pull request is in the type of:
- [x] bug fixing
- [x] new feature
- [ ] others
### What does this PR do?
#### feature: custom series support `transition: ['shape', 'style', 'extra']`
#### feature: custom series shape morphing storytelling
+ Support custom series morphing with split/merge effect.
+ Add `setOption` API to indication how to map old data and new data and
perform transition animation.
```js
setOption(option, {
transition: {
from: { seriesIndex: 0, dimension: 'SOME_A' },
to: { seriesIndex: 0, dimension: 'SOME_B' }
}
// Then the old data dimension SOME_A will be mapped to new data
dimension SOME_B,
// and the transition animation will happen.
// If there is "many-to-one" or "one-to-many" mappping, relative
transition animation will happen.
});
```
#### enhance: data transform enhancement
+ Clarify the rule of when need to return a new dimension definition in a
transform.
If the dimension changed, a transform need to return a new dimension
definition.
Otherwise, do not need to return it. echarts will inherit dimension from the
upstream.
+ Try to freeze the raw data exposed to data transform.
If a third-party transform modify the raw data of its upstream, it will
bring about uncertain unexpected behavior if multiple transform are combined.
This PR resolve it by call `Object.freeze` to freeze the raw data if
possible.
+ Clarify the API method name and behavior of data transform.
.
#### fix: underlying schedule framework bug
When setOption at the second time and change data, there is a bug in dispose
task instance.
### Show cases
`test/est/custom-shape-morphing2.html`
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