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Editing Splines

To edit 2d or 3D splines:

Which should you use?

  • Drag spline points

To edit splines:

  1. Select a spline or a spline point to edit any of the following:

    • Spline points: Select and drag a spline point to display the Point PropertyManager.

As you drag the spline point, the value for X Coordinate , Y Coordinate , and Z Coordinate (3D splines) changes.

  • Control polygon handles: Select and drag a control polygon handle to display the Spline Polygon PropertyManager.

As you drag a control polygon handle, the value for X Coordinate ,  Y Coordinate , and Z Coordinate (3D splines) changes.

  • Spline handles: In the Spline PropertyManager, under Parameters:

      1. Select Tangent Driving (or modify the tangent radial direction using the spline handles) .

      2. Use any of the handles listed below to manipulate the spline point shown identified as Spline Point Number .

Handles

Operation

Results

Drag either circular handle to control both tangent weighting and direction (vector) asymmetrically.

Under Parameters, updates values for:

  • Tangent Weighting 1 and Tangent Weighting 2 .

  • Tangent Radial Direction .

  • In 3D splines, this affects Tangent Polar Direction ).

Press Alt and drag either circular handle to control both tangency weight and direction (vector) symmetrically.

Updates the same values as above to both sides of the spline point.

 

Drag either arrow head handle to control tangency weight asymmetrically.

 

Under Parameters, updates values for:

  • Tangent Weighting 1 , and Tangent Weighting 2 .

  • In 3D splines, this affects Tangent Polar Direction .

Press Alt and drag either arrow head handle to control tangency weight symmetrically.

Updates the same values as above to both sides of the spline point.

 

Drag either diamond handle to control tangency direction (vector). Tangency is applied symmetrically to the spline point.

Under Parameters, updates values for:

Tangent Radial Direction .

Limitations exist with periodic splines. Some combinations of dimensions and constraints, such as Fix and Horizontal , may prevent controlling tangent weighting asymmetrically.  

  1. Examine the results, and if necessary, under Parameters:

  • Click Reset This Handle to return the spline handle to its original state.

  • Click Reset All Handles to return all spline handles to their original state.

  • Click Relax Spline to re-parameterize (smooth) the shape.

  • Select Proportional to drag the spline without changing its shape.

  1.  Click .

Related Topics

2D splines

Spline PropertyManager

3D spline PropertyManager

Tangent to face relations

Relations with splines

Dimension to spline handles

Simplify splines

Tangency control

Spline points

Options in two point splines



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