Hardness

This tool sets the hardness of the affected edges. When a polygon model is displayed using smooth shading, the hard edges will be displayed with an abrupt change in shading, as if the surface has a crease. If furthermore the polygon model is displayed with a subdiv level higher than zero, the subdivision surface algorithm will maintain the hard edges as creases.

If the selection mode is edges then the selected edges will be affected. If the selection mode is polygons then the edges of the selected polygons will be affected.

Hard edges are rendered as green edges when wireframe is enabled on the geometry item.

How hardness affects smooth shading and the subdivision surface algorithm.

Properties