# Construction tools: linear repetition

## Linear repetition

There are several modes of construction « linear repetition » :

- linear repetition (vector) : repetition along a vector defined by a delta on the abscissas (Dx) and a delta on the ordinates (Dy) and a number of repetitions.
- linear repetition (matrix) : equivalent to a linear double
repetition (vector) :
- a first repetition on the abscissas defined by a delta (Dx) and a number of repetitions on the abscissas.
- a second repetition, including the result of the first one, on the ordinates defined by a delta (Dy) and a number of repetitions on the ordinates.

Linear repetition (vector) | Linear repetition (matrix) |
---|---|

## Access / Cursor

The different accesses and the personalized cursor for this mode of creation are presented in the following table:

Type | Access | Cursor | |
---|---|---|---|

Linear Repetition (vector) | By icon: | ||

By menu: Tools → Linear repetition (vector) | |||

Linear repetition (matrix) | By icon: | ||

By menu: Tools → Linear repetition (matrix) |

## Dialog box

After the activation of this mode, a dialog box containing all the necessary fields and options to apply a linear repetition will appear.

Linear repetition (vector) | Linear repetition (matrix) | |
---|---|---|

Illustration |
||

Graphic selection |
Permits to get information on the list of entities to be repeated by selecting them graphically* | |

Dx |
Delta on the abscissas between the entities of origin and the repeated entities | |

Dy |
Delta on the ordinates between the entities of origin and the repeated entities | |

Number of repetitions |
The number of repetitions along the vector described by Dx and Dy (set by default at 1) |
The number of repetitions on X with a delta Dx (set by default at 1) + The number of repetitions on Y with a delta Dy (set by default at 1) |

Connect to origin |
Option common to all the modes of construction symmetry and repetitions |

*It is possible to unselect the entities graphically or by using the button Delete.

## Selection variant

The selection of the entities to repeat can be done:

- after the activation of the mode
- before the activation of the mode → field « Graphic selection » prefilled

## Apply a linear repetition (vector)

The process to apply a Linear repetition (vector) is presented in the table below.

Stage | Description |
---|---|

1 |
Activation of the mode |

→ |
A dialog box is opened |

2 |
Graphic selection of entities to be repeated |

→ |
The field « Graphic selection » is filled in The selected entities are highlighted |

3 |
Choice of a value Dx (to enter) |

4 |
Choice of a value Dy (to enter) |

5 |
Choice of a number of repetitions (to enter) |

→ |
The fields « Dx », « Dy » and « Number of repetitions » are filled The outline of the resulting entities of the repetition will appear |

6 |
Choice of the option « Connect to origin » : yes or no |

7 |
Validation of the repetition by OK |

→ |
The dialog box closes. A VECTOR transformation is created. The resulting entities of the application of the repetitions are created The mode of construction is automatically deactivated |

## Apply a linear repetition (matrix)

The process to apply a Linear repetition (matrix) is presented in the table below.

Stage | Description |
---|---|

1 |
Activation of the mode |

→ |
A dialog box is opened |

2 |
Graphic selection of entities to be repeated |

→ |
The field « Graphic selection » is filled in The selected entities are highlighted in green |

3 |
Choice of a value Dx (to enter) |

4 |
Choice of number of repetitions on X (to enter) |

→ |
The fields « Dx » and « Number of repetitions on X » are filled in The outline of the resulting entities of the repetition on X will appear |

5 |
Choice of the value Dy |

6 |
Choice of the number of repetitions on Y (to enter) |

→ |
The fields « Dy » and « Number of repetitions Y » are filled in The outline of the resulting entities of the repetitions on Y will appear |

7 |
Choice of the option « Connect to origin » : yes or no |

8 |
Validation of the repetition by OK |

→ |
The dialog box closes Two transformations LINEAR_X et LINEAR_Y are created The resulting entities of the application of the repetitions are created The mode of construction is automatically deactivated |