Edges on the boundary are also crease edges.Ī vertex that is attached to only smooth edges.Īny vertex that is between exactly two creased edges that form a smooth crease.Ī vertex at a sharp corner between two crease edges and any vertex attached to three or more crease edges.Ī vertex attached to exactly one crease edge. Rhino SubD objects have two types of edges (crease and smooth), and four types of vertices (smooth, crease, corner, and dart).Īn edge that smoothly connects two faces.Ī hard edge that connects two faces.
Press the Tab key or use the SubDDisplayToggle command to switch SubD objects between flat and smooth modes. you can download rhino 6 wip There is no added SubD functionality in release candidates for Rhino 6. The Rhino SubD Rules document provides the gold standard technical description of the mathematical definition used by Rhino SubD objects. Most SubD creation and editing commands can be found on the SubD menu and SubD Tools toolbar. If we step back to version 6, we have NURBS objects and meshes. They can be converted to either high-quality NURBS or mesh (quads or triangles) objects, and exported to file formats (e.g., IGES, STEP, OBJ, STL.) that support either meshes or NURBS. SubD, or SubDivision surfaces are a new object type inside of Rhino. SubD objects in Rhino are measurable and manufacturable. It’s kind of like a 3D equivalent of a spline, where you move control points.
You can tug and pull on the cage to change the shape of the surface. Rhino SubD objects are high-precision Catmull Clark subdivision surfaces designed to quickly model and edit complex organic shapes. SubD, or sub division modeling, is a set of surfaces based on a cage of points.
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