Evaluate Curve

Functionality

This node calculates the point on the curve at a given value of curve parameter. It can also automatically calculate a set of points at a series of evenly distributed values of curve parameter.

You will be using this node a lot, to visualize any curve, or to convert it to mesh.

• Curves-> Rounded Rectangle

• Viz-> Viewer Draw

Inputs

This node has the following inputs:

• Curve. Curve to be evaluated. This input is mandatory.

• T. The value of curve parameter to calculate the point on the curve for. This input is available only when Mode parameter is set to Manual. Sensible range values for this input corresponds to the domain of the curve provided in the Curve input. [Curve Domain]

• Samples. Number of curve parameter values to calculate the curve points for. This input is available only when Mode parameter is set to Auto. The default value is 50.

Parameters

This node has the following parameters:

• Mode:

  • Automatic. Calculate curve points for the set of curve parameter values which are evenly distributed within curve domain.

    

    • Curves-> Rounded Rectangle

    • Viz-> Viewer Draw Curve

    • Viz-> Viewer Draw

  • Manual. Calculate curve point for the provided value of curve parameter.

    

    • Number-> Number Range

    • Curves-> Rounded Rectangle

    • Curves-> Curve Domain

    • Viz-> Viewer Draw

• Join. If checked, then the node will output one single list of objects for all provided curves - for example, data in Verties output will have nesting level 3 even if data in Curve input had nesting level 2. Otherwise, the node will output separate list of object for each list of curves in the input - i.e., Verties output will have nesting level 4 if Curve input had nesting level 2. Checked by default.

Outputs

This node has the following outputs:

• Vertices. The calculated points on the curve.

• Edges. Edges between the calculated points. This output is only available when the Mode parameter is set to Auto.

• Tangents. Curve tangent vectors for each value of curve parameter.

Examples of usage

This node used for line visualization:

• Curves->Curve Primitives-> Line (Curve)

• Viz-> Viewer Draw

• Curves-> Rounded Rectangle

• Curves-> Curve Domain

• Number-> Random Num Gen

• Viz-> Viewer Draw Curve

• Viz-> Viewer Draw