<< Click to Display Table of Contents >> Navigation: MechDesigner Reference & User Interface > Dialog-Boxes > Dialog: Blend-Curve |
See also Add Blend-Curve
You can edit these geometric-properties AT the start-Point and AT the end-Point of a Blend-Curve : •Angle •Curvature •Curvature Rate The default geometric-properties are equal to the sketch-element(s) with which you merge its start-Point and/or end-Point. OR The default geometric-properties are zero(0) if you do not merge it with other sketch-elements. You can edit the geometric-properties: •Exactly : with the Blend-Curve dialog-box •Approximately : with the Blend-Curve drag-handles. |
Blend-Curve
Open the Blend-Point dialog-box
In the Part-Editor or the Mechanism-Editor:
The Blend-Curve dialog-box is now open. |
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There are two separators: Start-Point... End-Point... The parameters are the same for the two separators |
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Start Point ... / End Point ... Angle (Units: º):
Curvature k (Units:1 ∕ meter):
Curvature-Rate dk ∕ ds (Units: 1 ∕ m^2):
Velocity Scaling (no units)
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To show / hide the Blend-Curve drag-handles
![]() Drag handles in the Graphic-Area |
To show the Drag-Handles
You can now see the Drag-Handles at the start-Point and the end-Point There are two(2) Drag-Handle types:
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![]() Arrowhead Drag-Handle |
Arrowhead Drag-Handles control the Angle and the Velocity-Scaling Factor
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![]() Circle Drag-Handle |
Circle Drag-Handle control the Curvature
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Curvature All positions along a curve have a radius, which we call the curve's Radius-of-Curvature. Curvature = 1 / Radius-of-Curvature In general, the Radius-of-Curvature continually changes along the curve. As Radius-of-Curvature decreases, the Curvature increases. Curvature of a Line = 0 ; Radius-of-Curvature of a Line = ∞ ; Curvature of a Circle = 1 ∕ Circle Radius. E.g. : A circle has a radius of 20mm, its curvature = 1/0.02m = 50/m. Curvature-Rate This is the rate-of-change of curvature (how rapidly curvature changes) with respect to the distance along the Blend-Curve. |