by Dale Fugier (Last updated:  Wednesday, December 5, 2018)

Overview

CRhinoObject is the base class for all runtime Rhino geometric objects. ON_Geometry is the base class for all geometry class. All CRhinoObject derived object maintain a ON_Geometry derived class as a data member.

The following is an inventory of the geometric objects you are most likely to encounter in Rhino:

• CRhinoAnnotationObject - Virtual base class for annotation objects.
  • ON_Annotation2
• CRhinoAngularDimension - Angular dimension.
  • ON_AngularDimension2
• CRhinoAnnotationLeader - Annotation leader.
  • ON_Leader2
• CRhinoLinearDimension - Linear dimension.
  • ON_LinearDimension2
• CRhinoOrdinateDimension - Ordinate dimension.
  • ON_OrdinateDimension2
• CRhinoRadialDimension - Radial dimension.
  • ON_RadialDimension2
• CRhinoAnnotationText - Annotation text.
  • ON_TextEntity2
• CRhinoBrepObject - Surface or polysurface.
  • ON_Brep
• CRhinoClippingPlaneObject - Clipping plane.
  • ON_ClippingPlane
• CRhinoCurveObject - Curve.
• ON_Curve - Virtual base class for curve objects.
  • ON_ArcCurve
  • ON_CurveOnSurface
  • ON_CurveProxy
  • ON_LineCurve
  • ON_NurbsCurve
  • ON_PolyCurve
  • ON_PolylineCurve
• CRhinoDetailViewObject - Detail view.
  • ON_DetailView
• CRhinoExtrusionObject - Lightweight extrusion
  • ON_Extrusion
• CRhinoGripObject - Grip object. Note grip objects are not stored in the document.
  • ON_Point
• CRhinoHatch - Area hatching.
  • ON_Hatch
• CRhinoInstanceObject - Block instance.
  • ON_InstanceRef
• CRhinoLight - Rendering light.
  • ON_Light
• CRhinoMeshObject - Polygon mesh.
  • ON_Mesh
• CRhinoPointCloudObject - Point cloud.
  • ON_PointCloud
• CRhinoPointObject - Point.
  • ON_Point
• CRhinoSurfaceObject - Untrimmed surface.
  • ON_Surface
  • ON_NurbsSurface
  • ON_PlaneSurface
  • ON_RevSurface
  • ON_SumSurface
• CRhinoTextDot - Text dot.
  • ON_TextDot