Miao Zhuang

FruchtermanLayout 需要加一个引力系数

1

现在引力系数是由画布面积和点数量决定的，而且和斥力系数公用一个。。。导致没法分开调节 https://github.com/antvis/layout/blob/master/src/layout/fruchterman.ts#L195 建议 加一个引力系数 attractive 在这里*common https://github.com/antvis/layout/blob/master/src/layout/fruchterman.ts#L195 或者在 https://github.com/antvis/layout/blob/master/src/layout/fruchterman.ts#L267 这里加个 node.x *= scaleKey,整体缩放，让画布里的点尺寸可以适应 （gpu的也希望同步加些调节参数）

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