QT实现三点求圆心以及半径

[{"title":"（6个子文件5KB）QT实现三点求圆心以及半径","children":[{"title":"for_point","children":[{"title":"for_point.pro <span style='color:#111;'>1.21KB</span>","children":null,"spread":false},{"title":"widget.h <span style='color:#111;'>652B</span>","children":null,"spread":false},{"title":"widget.ui <span style='color:#111;'>6.35KB</span>","children":null,"spread":false},{"title":"for_point.pro.user <span style='color:#111;'>23.79KB</span>","children":null,"spread":false},{"title":"main.cpp <span style='color:#111;'>201B</span>","children":null,"spread":false},{"title":"widget.cpp <span style='color:#111;'>1.97KB</span>","children":null,"spread":false}],"spread":true}],"spread":true}]