Rotation Field

https://github.com/nortikin/sverchok/assets/14288520/024400d8-69ae-4482-9ab7-f22e67df09c0

Functionality

This node generates a Vector Field which is calculated as force rotating points around some axis. Several physics-like falloff laws are supported. Falloffs similar to standard proportional editing mode are supported too (they are marked with (P) in the name).

https://github.com/nortikin/sverchok/assets/14288520/5ef50da8-6d61-4266-8e31-8db6d66262fe

Inputs

This node has the following inputs:

  • Location. Point on the rotating axis

    It is possible to provide several location points. The default value is (0, 0, 0) (origin).

  • Direction. Direction of the rotation axis. The default value is (0, 0, 1) (Z axis).

https://github.com/nortikin/sverchok/assets/14288520/25cdcca7-0347-4cbe-801c-6d003a3226f5 https://github.com/nortikin/sverchok/assets/14288520/356a88c5-aa31-41d1-9d27-dba7c75acc3e

  • Amplitude. The attracting force amplitude. The default value is 0.5.

  • Coefficient. The coefficient used in the attracting force falloff calculation formula. The exact meaning of this input depends on fallof type:

    • If Falloff type is set to Inverse exponent or Gauss, then this is the coefficient K in the corresponding formula: exp(-K*R) or exp(-K*x^2/2).

    • If Falloff type is set to one of proportional editing modes (one starting with (P) prefix), this is the radius of proportional editing falloff.

    • For other falloff types, this input is not available.

    The default value is 0.5.

Parameters

This node has the following parameters:

  • Join mode. This determines how the distance is calculated when multiple attraction centers are provided. The available values are:

    • Average. Calculate the average of the attracting forces towards the provided centers. This mode is used in physics. This option is the default one.

    • Nearest. Use only the force of the attraction towards the nearest attraction center.

    • Separate. Generate a separate field of attraction force for each attraction center.

    This parameter is not available when the Attractor type is set to Mesh - Faces.

  • Clamp. If checked, then the amplitude of attracting force vector will be restricted with the distance to attractor object. Unchecked by default.

Outputs

  • VField. Vector field of the rotating force.

Examples of usage

https://github.com/nortikin/sverchok/assets/14288520/ebd38346-a271-456f-a8c1-22c5d9dfd2fb
https://user-images.githubusercontent.com/10011941/107337942-45f45080-6abb-11eb-8245-74afc5fab5df.png