/// <summary> /// /// </summary> /// <param name="contextSurface"></param> /// <param name="u"></param> /// <param name="v"></param> /// <returns></returns> public static SurfaceCurvature BySurfaceParameters(Surface contextSurface, double u, double v) { if (contextSurface == null) { return(null); } ISurfaceEntity host = contextSurface.GetSurfaceEntity(); if (host == null) { return(null); } ICoordinateSystemEntity coordinateSystemEntity = host.CurvatureAtParameter(u, v); if (null != coordinateSystemEntity) { SurfaceCurvature surfCurv = new SurfaceCurvature(contextSurface, u, v, coordinateSystemEntity); return(surfCurv); } return(null); }
/// <summary> /// /// </summary> /// <param name="contextSurface"></param> /// <param name="u"></param> /// <param name="v"></param> /// <returns></returns> public static SurfaceCurvature BySurfaceParameters(Surface contextSurface, double u, double v) { if (contextSurface == null) return null; ISurfaceEntity host = contextSurface.GetSurfaceEntity(); if (host == null) return null; ICoordinateSystemEntity coordinateSystemEntity = host.CurvatureAtParameter(u, v); if (null != coordinateSystemEntity) { SurfaceCurvature surfCurv = new SurfaceCurvature(contextSurface, u, v, coordinateSystemEntity); return surfCurv; } return null; }