indented，direction为H时，root节点的左右节点无法同时顶部对齐 #3265

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What problem does this feature solve?

缩进树，左右模式分布，root节点的左右节点无法同时顶部对齐 layout: { type: 'indented', direction: 'H', dropCap: false, indent: 200, getHeight: () => { return 60; }, }, https://g6.antv.vision/zh/examples/tree/indented#intendAlignTop

What does the proposed API look like?

function positionNode(node, previousNode, dx, dropCap) { if (!dropCap) { try { // TODO H布局 要区分左右的第一个 都这样处理 if (node.id === node.parent.children[0].id) { node.x = dx * node.depth; node.y = previousNode ? previousNode.y : 0; return; } } catch (e) { // skip to normal when a node has no parent } }

node.x = dx * node.depth; node.y = previousNode ? previousNode.y previousNode.height : 0; return; }

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