pymel.core.effects.newton¶

newton(*args, **kwargs)¶

A Newton field pulls an object towards the exerting object with force dependent on the exerting object’s mass, using Newton’s universal law of gravitation. The transform is the associated dependency node. Use connectDynamic to cause the field to affect a dynamic object. If fields are created, this command returns the names of each of the fields. If a field was queried, the results of the query are returned. If a field was edited, the field name is returned. If object names are provided or the active selection list is non-empty, the command creates a field for every object in the list and calls addDynamic to add it to the object. If the list is empty, the command defaults to -pos 0 0 0. Setting the -pos flag with objects named on the command line is an error.

Flags:

Long Name / Short Name		Argument Types	Properties
attenuation / att		float
	Attentuation rate of field
magnitude / m		float
	Strength of field.
maxDistance / mxd		float
	Maximum distance at which field is exerted. -1 indicates that the field has no maximum distance.
minDistance / mnd		float
	Minimum distance at which field is exerted. Distance is in the denominator of the field force equation. Setting md to a small positive number avoids bizarre behavior when the distance gets extremely small.
name / n		unicode
	name of field
perVertex / pv		bool
	Per-vertex application. If this flag is set true, then each individual point (CV, particle, vertex,etc.) of the chosen object exerts an identical copy of the force field. If this flag is set to false, then the froce is exerted only from the geometric center of the set of points.
position / pos		float, float, float
	Position in space where you want to place a field. The newton then emanates from this position in space rather than from an object. Note that you can both use -pos (creating a field at a position) and also provide object names. Flag can have multiple arguments, passed either as a tuple or a list.
torusSectionRadius / tsr		float
volumeExclusion / vex		bool
volumeOffset / vof		float, float, float
volumeShape / vsh		unicode
volumeSweep / vsw		float

Derived from mel command maya.cmds.newton

Example:

import pymel.core as pm

pm.newton( 'particle1', m=5.0, mxd=2.0 )
# Creates a newton field with magnitude 5.0 and maximum distance 2.0,
# and adds it to the list of fields particle1 owns.

pm.newton( pos=(-2, 0, 4) )
# Creates a newton field at position (0,2,4) in world coordinates,
# with default magnitude(1.0), attentuation (1.0),
# and max distance (5.0).

pm.newton( 'newtonField1', e=1, att=0.98 )
# Edits the acceleration value of the field named newtonField1

pm.newton( 'newtonField1', q=1, m=1 )
# Queries newtonF ield1for its magnitude.

pm.newton( 'newtonField1', e=1, mxd=10.0 )
# Changes the maximum distance of the field called
# "newtonField1" to 10.0.

pm.newton( m=2.0 )
# Creates a newton field with magnitude 2.0 for every active selection.
# If no there are active
# selections, creates such a field at world position (0,0,0).