According to Wiki:

This value (between 0 and 180) controls the threshold for this tool to work on adjacent triangles. With a threshold of 0.0, it will only join adjacent triangles that form a perfect rectangle (i.e. right-angled triangles sharing their hypotenuses). Larger values are required for triangles with a shared edge that is small, relative to the size of the other edges of the triangles.

However, I don't quite follow that part (even trying my best to), and still puzzling on how it works exactly.

Can anyone explain more about it, for easier understanding?

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P.S.: I know what it is for, just can hardly understand how it works from Wiki.

  • $\begingroup$ Hi, it has 'max face angle' and 'max shape angle' now, 'max face angle' is the angle between tris. what about 'max shape angle'? $\endgroup$ – June Wang Nov 6 '19 at 1:34

An overly simple answer is that a higher value means it will be more likely to form quads. A lesser value will be less likely to make triangles into quads. If you sculpt something with dynamic topology and then try the tool it will explain itself pretty quickly.

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