HoverActivate 悬停激活
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HoverActivate 是 G6 中用于实现元素悬停激活效果的内置交互，当鼠标悬停在节点或边上时，会自动触发高亮、显示等视觉反馈。该交互是图可视化中增强数据探索的重要手段，有助于用户快速聚焦目标元素并获取相关信息。
这一交互主要用于：
createGraph({data: {nodes: [{ id: 'node0', size: 50, label: '0', style: { x: 326, y: 268 } },{ id: 'node1', size: 30, label: '1', style: { x: 280, y: 384 } },{ id: 'node2', size: 30, label: '2', style: { x: 234, y: 167 } },{ id: 'node3', size: 30, label: '3', style: { x: 391, y: 368 } },{ id: 'node4', size: 30, label: '4', style: { x: 444, y: 209 } },{ id: 'node5', size: 30, label: '5', style: { x: 378, y: 157 } },{ id: 'node6', size: 15, label: '6', style: { x: 229, y: 400 } },{ id: 'node7', size: 15, label: '7', style: { x: 281, y: 440 } },{ id: 'node8', size: 15, label: '8', style: { x: 188, y: 119 } },{ id: 'node9', size: 15, label: '9', style: { x: 287, y: 157 } },{ id: 'node10', size: 15, label: '10', style: { x: 185, y: 200 } },{ id: 'node11', size: 15, label: '11', style: { x: 238, y: 110 } },{ id: 'node12', size: 15, label: '12', style: { x: 239, y: 221 } },{ id: 'node13', size: 15, label: '13', style: { x: 176, y: 160 } },{ id: 'node14', size: 15, label: '14', style: { x: 389, y: 423 } },{ id: 'node15', size: 15, label: '15', style: { x: 441, y: 341 } },{ id: 'node16', size: 15, label: '16', style: { x: 442, y: 398 } },],edges: [{ source: 'node0', target: 'node1', label: '0-1' },{ source: 'node0', target: 'node2', label: '0-2' },{ source: 'node0', target: 'node3', label: '0-3' },{ source: 'node0', target: 'node4', label: '0-4' },{ source: 'node0', target: 'node5', label: '0-5' },{ source: 'node1', target: 'node6', label: '1-6' },{ source: 'node1', target: 'node7', label: '1-7' },{ source: 'node2', target: 'node8', label: '2-8' },{ source: 'node2', target: 'node9', label: '2-9' },{ source: 'node2', target: 'node10', label: '2-10' },{ source: 'node2', target: 'node11', label: '2-11' },{ source: 'node2', target: 'node12', label: '2-12' },{ source: 'node2', target: 'node13', label: '2-13' },{ source: 'node3', target: 'node14', label: '3-14' },{ source: 'node3', target: 'node15', label: '3-15' },{ source: 'node3', target: 'node16', label: '3-16' },],},behaviors: ['zoom-canvas', 'drag-canvas', { key: 'hover-activate', type: 'hover-activate' }],autoFit: 'center',},{ width: 600, height: 300 },(gui, graph) => {const options = {key: 'hover-activate',type: 'hover-activate',animation: true,enable: true,degree: 1,direction: 'both',};const optionFolder = gui.addFolder('Hover Activate Options');optionFolder.add(options, 'type').disable(true);optionFolder.add(options, 'animation');optionFolder.add(options, 'enable');optionFolder.add(options, 'degree', 0, 10, 1);optionFolder.add(options, 'direction', {both: ['both'],in: ['in'],out: ['out'],});optionFolder.onChange(({ property, value }) => {graph.updateBehavior({key: 'hover-activate',[property]: value,});graph.render();});},);
在图配置中添加这一交互：
1. 快速配置（静态）
使用字符串形式直接声明，这种方式简洁但仅支持默认配置，且配置后不可动态修改：
const graph = new Graph({// 其他配置...behaviors: ['hover-activate'],});
2. 对象配置（推荐）
使用对象形式进行配置，支持自定义参数，且可以在运行时动态更新配置：
const graph = new Graph({// 其他配置...behaviors: [{type: 'hover-activate',key: 'hover-activate-1', // 为交互指定标识符，方便动态更新},],});
| 配置项 | 说明 | 类型 | 默认值 | 必选 |
|---|---|---|---|---|
| type | 交互类型名称 | string | hover-activate | ✓ |
| animation | 是否开启动画效果 | boolean | true | |
| enable | 是否开启悬浮元素功能 | boolean | ((event: IPointerEvent) => boolean) | true | |
| degree | 激活元素的n度关系 | number | ((event: IPointerEvent) => number); | 0 | |
| direction | 指定边方向 | both | in | out | both | |
| state | 激活元素的状态 | string | active | |
| inactiveState | 不激活元素的状态 | string | - | |
| onHover | 当元素被悬停时的回调 | (event: IPointerEvent) => void | - | |
| onHoverEnd | 当悬停结束时的回调 | (event: IPointerEvent) => void | - |
enable 用于控制是否开启元素的悬浮高亮，可接收一个函数来动态控制
例如：只有节点开启悬浮高亮
const graph = new Graph({// 其他配置...behaviors: [{type: 'hover-activate',enable: (e) => {if (e.targetType === 'node') {return true;}return false;},},],});
const graph = new Graph({// 其他配置...behaviors: ['hover-activate'],});
const graph = new Graph({// 其他配置...behaviors: [{type: 'hover-activate',enable: (e) => {if (e.targetType === 'node') {return true;}return false;},},],});
const graph = new Graph({// 其他配置...behaviors: [{type: 'hover-activate',degree: 1,direction: 'out',enable: (e) => {if (e.targetType === 'node') {return true;}return false;},},],});