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17 lines
674 B
17 lines
674 B
4 months ago
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/**
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* Get average height or height for node's position calculation, according to align.
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* @param {*} preNode previous node
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* @param {*} node current node, whose position is going to be calculated
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* @param {'center' | undefined} align 'center' means nodes align at the center, other value means align at the left-top
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* @param {string} heightField field name for height value on preNode and node
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* @return {number} the height for calculation
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*/
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function getHeight(preNode, node, align, heightField = 'height') {
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return align === 'center' ? (preNode[heightField] + node[heightField]) / 2 : preNode.height;
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}
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module.exports = {
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assign: Object.assign,
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getHeight
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};
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