NX1003 SNAP二次开发增强的部分功能

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• Topology objects and functions: new Snap.Topology namespace; additions to Snap.NX.Body,
! m& I( M) m4 H) m( XSnap.NX.Face, and Snap.NX.Edge
# L2 ^$ P) B' \; H! ^$ c6 _• Temporary display functions: Snap.Draw class
" X" H( p4 g/ [1 z• Fast calculation of points on a B-surface: Snap.Geom.Surface.Bsurface.Position
• Create curves from edges: Snap.NX.Edge.ToCurve
* p) K+ ]: G  w. O- {$ P• Analyze edge convexity: Snap.NX.Edge.Convexity
• Point containment: Snap.NX.Body.ContainsPoint and Snap.NX.Face.ContainsPoint
* v9 v% ^5 }6 P7 A2 ?• Convert between degrees and radians: Snap.Math class
• Work view: Snap.Globals.WorkView
• NX standard views: Snap.NX.View.Standard class
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