feat: add mark partition

[moayuisuda]

Checklist

• npm test passes

Description of change

支持层叠图

[gemini-code-assist]

Summary of Changes

Hello @moayuisuda, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly extends G2's capabilities by introducing a new hierarchy mark type, designed for rendering complex hierarchical data structures. It features a unique layout algorithm that visually emphasizes parent-child relationships and comes with a built-in DrillDown interaction, allowing users to intuitively navigate through different levels of the hierarchy. This addition provides a powerful tool for visualizing and exploring tree-like datasets.

Highlights

• New Hierarchy Mark: Introduced a hierarchy composite mark for visualizing hierarchical data, providing a structured way to display parent-child relationships.
• Custom Layout Algorithm: Implemented a hierarchyLayout function that positions child nodes relative to their parents, supporting options like sort and fillParent for flexible rendering.
• Dedicated DrillDown Interaction: Added a DrillDown interaction specifically for hierarchy charts, enabling interactive exploration of data levels with breadcrumb navigation.
• Core Integration: The new hierarchy mark and DrillDown interaction are integrated into the G2 core library, making them readily available for chart creation.
• Comprehensive Test Coverage: Included new test cases (flareHierarchyDefault, flareHierarchyDefaultSort) to ensure the correct functionality and behavior of the hierarchy mark.

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[gemini-code-assist]

Code Review

这个 PR 引入了新的 hierarchy 标记类型和 DrillDown 交互，用于支持层级结构可视化（如层叠图）。这是一个很棒的功能增强。代码整体结构清晰，但我在 hierarchy.ts 和 drillDown.ts 中发现了一些需要注意的问题，主要涉及数据处理的正确性、性能和 API 的一致性。请查看我的具体评论。

[hustcc]

这个叫 hierarchy mark 嘛？会不会太大了，hierarchy 代表着层级数据，他的可视化呈现肯定不至于火焰图，包括树图、矩阵树图都是属于 hierarchy 数据结构的。

[moayuisuda]

那用 partition 吧，Partition

[hustcc]

那用 partition 吧，Partition

是这个图吗？https://g2.antv.antgroup.com/examples/general/interval/#bar-marimekko

[hustcc]

不如直接叫 flame https://github.com/spiermar/d3-flame-graph?tab=readme-ov-file 类似于词云图，旭日图这些。

[moayuisuda]

想的是把这个 mark 做宽泛一点，用来承载嵌套数据的场景，不同 encode、coordinate 配置下可以转换为 层叠图、火焰图、旭日图 这些，旭日图这种之前写死 encode 的定制图表就不再透出了

[coveralls]

Pull Request Test Coverage Report for Build 19496544097

Details

• 97 of 179 (54.19%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.5%) to 79.976%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/mark/partition.ts	73	76	96.05%
src/interaction/drillDown.ts	24	103	23.3%

Totals
Change from base Build 19352494524:	-0.5%
Covered Lines:	10413
Relevant Lines:	12492

---

💛 - Coveralls

[interstellarmt]

这里的 drillDown 能和 treemapDrillDown 合并吗

[moayuisuda]

下个pr合并吧，试了下改动有点大

[interstellarmt]

这里的single和background我看交互里都没用到？

[moayuisuda]

已删