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Editing Layout Profiles Using Grips

Product Documentation
Intermediate
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Use grips to graphically change the vertical curves and tangents in a profile.

Use editing grips to relocate or modify curves and tangents using visual design cues. If you created profile entities using the constraint-based tools, some editing grips are not available. For example, if you attach a floating curve to a fixed or floating tangent, the editing grip is not available for editing the PVI of the two entities.

Note

When a grip is selected, you can use either dynamic input or the Profile Entities and Profile Layout Parameters dialog boxes to enter precise attribute values for the grip.

Tutorial Exercise: Editing a Layout Profile

To grip edit layout profiles

  1. Click a profile object in a profile view. If the profile type is static, editing grips appear on the tangents and vertical curves. Grip behavior depends on the type of grip:

    Grip Type

    Behavior

    at point of vertical intersection (PVI)

    Moves the PVI, changing grades and lengths of adjacent tangents.

    Preserves curve length and radius.

    Use with ORTHO mode turned on to move PVI horizontally or vertically.

    at end of tangent

    Adjusts the tangent length while preserving the grade. Modifies the grade of adjacent tangent.

    Preserves curve length and radius.

    at end of tangent

    Adjusts the tangent length and grade simultaneously. Modifies the grade of adjacent tangent.

    at tangent midpoint

    Moves the entire tangent, without changing the length or grade.

    Changes the location of adjacent PVIs and the grade of adjacent tangents.

    Preserves the radius and length of adjacent curves.

    at curve endpoint

    Moves the endpoint along the tangent, without affecting the tangent grades or PVI location.

    Changes position of both curve endpoints so that midpoint remains near PVI.

    Changes the curve length and radius.

    at curve midpoint

    Moves a pass-through point for the curve, changing the curve length, radius, and position of both endpoints as required.

    PVI location is not affected.

    After the curve is edited, this grip moves to the new midpoint.
  2. Identify the grip you want to move, then click it once. The grip changes color from cyan to red.
  3. Drag the grip to its new location, and click to place it there. The grip follows your mouse pointer, within the constraints imposed by the grip type.
    Note

    When a grip is selected, you can use either dynamic input or the Profile Entities vista and Profile Layout Parameters dialog box to enter precise attribute values for the grip.


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