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Relations with Splines

Constraints to Internal Spline Points Constraints to End Spline Points
Coincident Horizontal
Concentric Vertical
Perpendicular Tangent
Tangent Coincident
Midpoint Concentric
Fix Midpoint
  Fix
  Merge
Constraints to Internal Handles Constraints to End Handles
Tangent Equal Curvature
  Tangent
Constraints Between Handles
Parallel
Horizontal
Vertical
Curvature
Tangent to Face
Adjacent faces and 2D or 3D splines

Curvature Continuous Splines

The radius of curvature and the vector (direction) match when you add an Equal Curvature PM_Equal_Curvature.gif relation between adjacent splines.

The splines are curvature continuous at the boundary.
curvature-constraint-G2_01.gif curvature-constraint-G2_02.gif
Requirements:
  • The second spline is unconstrained.
  • The two splines share an endpoint.


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