how to set size of points in viz::WCloud

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Hello, everyone,

This is Jane, I am using viz::WCloud to draw a 3D face, and display it in window (viz::Viz3d myWindow), my problem is, I can set the color of the points displayed in the window, but I have no idea how to change the size of these 3D points, they are too small, and I can not use it in my work. Thanks. Here is how I set the color.

     viz::WCloud cloud_widget(bunny_cloud, viz::Color::green());

good luck

Jane