US 11,907,617 B2
Surface patch techniques for computational geometry
Alyn P. Rockwood, Niwot, CO (US)
Assigned to CAD-Sense LLC, Frisco, TX (US)
Filed by CAD-Sense LLC, Austin, TX (US)
Filed on Aug. 1, 2022, as Appl. No. 17/816,718.
Application 17/816,718 is a continuation of application No. 16/582,883, filed on Sep. 25, 2019, granted, now 11,403,434.
Application 16/582,883 is a continuation of application No. 15/043,880, filed on Feb. 15, 2016, abandoned.
Application 15/043,880 is a continuation of application No. 14/461,439, filed on Aug. 17, 2014, granted, now 9,262,859, issued on Feb. 16, 2016.
Application 14/461,439 is a continuation of application No. 13/607,590, filed on Sep. 7, 2012, granted, now 8,836,701, issued on Sep. 16, 2014.
Application 13/607,590 is a continuation of application No. 12/460,587, filed on Jul. 20, 2009, abandoned.
Claims priority of provisional application 61/135,341, filed on Jul. 18, 2008.
Claims priority of provisional application 61/211,714, filed on Apr. 1, 2009.
Prior Publication US 2023/0131481 A1, Apr. 27, 2023
Int. Cl. G06F 30/00 (2020.01); G06T 17/10 (2006.01); G06T 17/30 (2006.01); G06T 15/10 (2011.01); G06F 17/10 (2006.01)
CPC G06F 30/00 (2020.01) [G06F 17/10 (2013.01); G06T 15/10 (2013.01); G06T 17/10 (2013.01); G06T 17/30 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for creating an optically smooth geometric model, comprising:
forming a loop from a plurality of parametrically defined curves;
creating a plurality of ribbons along each of the plurality of parametrically defined curves of the loop, each ribbon between a preceding parametrically defined curve of the loop and a subsequent parametrically defined curve of the loop; and
blending the ribbons to form a multi-sided surface patch between the parametrically defined curves, wherein a portion of each ribbon is Gkgeometric continuous with a portion of another ribbon of the plurality of ribbons, wherein k is dependent upon one or more criteria for optical smoothness of the geometric model.