Just wanted to early share a possible workflow of a work in progress tool named QuadPaint in the Retopo room. It will be a quite versatile and powerful semi automatic retopology allowing to quadrangulate arbitrary user defined (by stroking or painting) patches. Strokes can intersect defining sub-patches for further control and have different linear densities and in the future more means of quadrangulation control can be added like guide lines or control points of some sort.
My current efforts are focused on bring this tool to a production level state. There’s still many things to improve: from better quadrangulation, to auto snapping and smoothing (which I do manually for this video but once implemented you should see similar results) , adding few more things and to solve several instability bugs latter too.
This new tool shares the quadrangulation code base with QuadFill and CloseHolesRtool (man I should name it better 😉 ) so once I improve this the rest will be improved too.