Orientations

The basic ways of defining an orientation are:

• Orientation attribute plus optional WRT. For example: ORI OF /BOX1 WRT /*.

• Cartesian orientation. For example: dir IS dir AND dir IS dir.

• For example to set an orientation of an element to that of a section, rotated by 90 degrees use: (E IS U WRT /SCTN1 AND N IS E WRT /SCTN1).

• The AXES keyword, which will allow you to use ppoints to specify orientations.

• The syntax is:

  .----<--------.

  / |

  >-- AXES --*--- PArrive ---|

  | |

  |--- PLeave ----|

  | |

  |--- PTail -----|

  | |

  |--- HHead -----|

  | |

  |--- HTail -----|

  | |

  ‘--- PPOINT n --+-- OF - <gid> ---->

• An example is:

  ( AXES PLEAVE IS AXES PLEAVE OF PREV AND AXES P3 IS UP )

• This will orient a branch component, such as a valve, so that it is aligned with the previous component and its P3 is up. Refer to Comparing Positions for further information.