Creating a Rotated Relative CS
To create a new relative CS with its axes rotated away from another CS's axes:
- In the history tree, select the CS upon which you want to base the new relative CS, making it the working CS.
- Click Modeler > Coordinate
System > Create > Relative CS > Rotated
.
- Specify the x axis by selecting a point in one of the following ways:
- Click the point.
- At the lower right of the modeler window, use the drop down menu to select the system for expressing coordinates (Cartesian, Cylindrical, or Spherical), select either relative or absolute coordinates, then select the units, and type the CS origin coordinates in boxes.
- Specify the xy plane by selecting any point on it in one of the following ways:
- Click the point.
- Type the coordinates of a point that is relative to the previously selected point in the dX, dY, and dZ boxes, where d is the distance from the previously selected point.
- You do not need to specify the z axis. It is automatically calculated so that the axes form a right-handed Cartesian coordinate system.
To select a point that does not lie in the current plane, use the Movement Mode commands on the shortcut menu.
The new relative CS is created. It has the same origin as the previous working CS, but its axes are rotated. It is listed in the history tree under Coordinate Systems. It automatically becomes the working CS; objects that you draw hereafter are based on the coordinates of this relative CS. Default planes are created on its xy, yz, and xz planes.