Скачать или смотреть myMeasureNode : Maya Python API Plugin

A math based node which helps to find the distance and angle between vectors.Mainly used dot Product and laws of cosine to make this node.Based on the world Matrix of the objects you will get the outputs.

Attributes :

Color : Helps to change the color of the Locator.

Position Markers : Helps to visually describe the world position of the objects connected.

Precision : Gives you the desired decimal numbers.

Distance Start ,Distance End Matrix : Connect the world matrix of the objects.If nothing is connected its takes as origin.

Distance Units : Converts the calculated distance in foot,inches,meter,millimetre or yards .By default is centimetre.

Angle Start,Angle Mid,Angle End Matrix : Connect the world matrix of the objects.If nothing is connected its takes as origin.

Angle Units : Converts the calculated angles in radian.By default is degree.