User Coordinate System

VCollab Pro provides different types of interfaces for users to define their own coordinate system to visualize CAE results .

Coordinate System Manager Panel

Click Tools|User Coordinate System

The various fields and controls available on the Coordinate System Manager Panel are explained below:

Name	New Coordinate system name.
Type	Coordinate system type. i.e., Rectangular/Cylindrical/Spherical.
Definition	Allows users to select an interface method to define coordinate system.
Origin	Allows users to pick vertex in model or enter new origin coordinates separated by commas.
X Axis	Defines X axis vector.
XY Plane	Defines Y axis vector.
Create	Creates new coordinate system and adds to the list box.
Delete	Deletes selected coordinate systems by names.

Types of Coordinate Systems

VCollab Pro supports following coordinate system types,

1.Rectangular

A cartesian coordinate system represented as (X, Y, Z) .

2.Cylindrical

A Polar coordinate system represented as (r, ??, Z) where,

r is the radial distance from the coordinate to Z axis.

?? is the angle of deviation from the X axis to projection of OP into XY plane (OQ).

Z is the same as in the Cartesian coordinate system.

3. Spherical

A Polar coordinate system represented as (r,?? ,??) where,

r is the distance from origin to the coordinate.

?? is the angle of deviation from the X axis to projection of OP into XY plane (OQ).

?? is the angle of deviation from Z axis to the coordinate positional vector OP.

Definition of Coordinate System

Independent of types, any new coordinate system requires a new origin and orientation relative to the global or current coordinate system.

VCollab Pro provides different ways for users to define a new coordinate system. Origin is a common input for all methods. Users can pick a vertex in the model to define as new origin.

• X Axis and XY Plane User has to provide 3 points. Pick option can be used to select vertices from the model.

  Origin : First Point (P1)

  X axis : Second point - Origin (P2-P1)

  Z axis : Cross product of (P3-P1) and (P2-P1)

  Y axis : Cross product of Z and X axes.

• X Axis and the Y Axis Pick option is enabled only for origin.

  Origin : Picked or Entered point.

  X Axis : Entered by user.

  Y Axis : Entered by user.
• Arbitrary Axis and Angle Pick option is enabled only for origin.
  Orientation of new coordinate system is defined by the axis of rotation and angle in degrees.

  Origin : Picked or Entered point.

  X Axis : Derived from Orientation.

  Y Axis : Derived from Orientation.
• 3 Points Circular User has to pick or enter three non collinear points(P1,P2,P3). Points are considered in the periphery of a circle.
  Origin : Center of circle.

  X Axis : Origin to P1.

  Z Axis : Normal of plane formed by circle.

  Y axis : Derived from X and Z axes.

Steps to create a new user defined coordinate system (UCS)

• Enter a new Coordinate system name.

• Select coordinate type

• Select a method to define a new coordinate system.

• Enter or Pick coordinates to define origin, X and Y axes.

• Click Create to create a new UCS.

• The newly created UCS will be listed in the list box with check boxes.

• Users can turn ON/OFF UCS visibility in the viewer using corresponding checkboxes.

• Users can select multiple coordinate systems and delete them.