
Tangency Parameters Quick
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The Tangency Parameters dialog allows explicit
control over the creation of tangent field surfaces associated with sketch
curves. Note that the tangent field surface can be viewed by selecting
it in the Operators Parameters panel. 


Tangency
Selection 


Pick G1 Crv: Pick
a curve whose offset from the original sketch curve will define the
direction and magnitude of a tangent surface.
Pick G2 Crv: Pick a curve whose offset from the original
sketch curve will define the radius of curvature.



Tangency
Setting 


No Tangency: Do
not produce a tangent surface for this sketch curve.
Edge Surface #1: Utilize the first surface of an edge on
a NURBS Brep or a sketch.
Edge Surface #2: Utilizes the other surface not used in
"Edge Surface #1".
G1 From Curve: Define the tangent direction using a
curve. Requires a G1 curve to be selected.
Parall to Vector: Make tangent field parallel to the
specified vector.
Perpen to Vector: Make tangent field perpendicular to
the specified vector and the curve tangents.
Parall to Curvature: Make tangent field follow curvature
vector. For example this would point inward or outward from a
circle.
Perpen to Curvature: Make tangent field follow path
perpendicular to curvature vector. For example for a circle, this
would be up or down along the Z axis of the circle.
The following options only apply when
selecting edges of a NURBS Brep.
Along Iso Curves: Utilize the Iso curve
direction to control the orientation of the tangent field. Typically
this option is used when the curve is an iso curve.
Perpendicular To Edge: Make the tangent field perpendicular to the
edge. This option is often used for closed curves trimming a
surface.
Edge Averaging: When multiple edges are selected for the sketch,
average the tangent field between the edges. 


Curvature
Setting 


No Curvature: Don't
utilize curvature in the tangent field surface.
G2 From Surface: Utilize the
second derivative from the surface in the tangent field  this option only
applies for Edge Surface #1 and Edge Surface #2 options above.
G3 From Surface: Utilize the third derivative from the surface  this
option only applies for Edge Surface #1 and Edge Surface #2 options above.
G2 From Curve: Specifies the curvature will be taken from the
"G2 Curve" selected above.
From Dialog: Utilize the curvature values in the tangent
control handles. 


Tangent
Control Handles 


The tangent control handles
allow you to modify the tangent field surface starting from the definition
specified in the previous options.
Parameter: Where along the
curve to apply the handle in terms of a relative percent. The range
is 0% to 100%.
Tangent Length: Specifies the length or strength of the
tangent field surface.
Twist Angle: Rotation of the tangent field around the curve counter
clock wise.
Flair Angle: Rotation of the tangent
field up and down the curve.
Curvature Rad: Radius of curvature at this position on the curve.
Acceleration: Acceleration or deceleration of the
tangent strength. 


Parameter
Window 


This window displays various
parameters. It corresponds to the entries for the Tangent
control handle settings (see above) Parm: Parameter
Len: Tangent Length
Tw: Twist Angle
Fl: Flair Angle
Cu: Curvature Radius
Ac: Accelleration 


Morph
Editing 


Del Morph: Delete
the selected morph.
Duplicate #: Number of morphs to duplicate starting with
the selected morph.
Dup: Duplicate the morphs now. 
