Catenary Curve

Dependencies

This node requires SciPy library to work.

Functionality

This node generates a catenary curve, given it’s two end points and it’s length.

Inputs

This node has the following inputs:

• Point1. Starting point of the curve. The default value is (-1, 0, 0).

• Point2. Ending point of the curve. The default value is (1, 0, 0).

• Gravity. Gravity force vector, i.e. the direction where curve’s arc will be hanging to. Only direction of this vector is used, it’s length has no meaning. The default value is (0, 0, -1).

• Length. The length of the curve between starting and ending point. The default value is 3.0.

Parameters

This node has the following parameter:

• Join. If checked, then the node will output single flat list of curves for all input lists of points. Otherwise, the node will output a separate list of curves for each list of input points. Checked by default.

Outputs

This node has the following output:

• Curve. The generated catenary curve object.

Examples of usage

Catenary curve hanging down between two points:

• Viz-> Viewer Draw Curve

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Catenary arch:

• Generator-> NGon

• Curves->Curve Primitives-> Polyline

• Surfaces-> Extrude Curve Along Curve

• Surfaces-> Evaluate Surface

• Viz-> Viewer Draw