TO ENTITY

Purpose:

This function facilitates the limitation of user-indicated contours in the current drawing A contour can be limited to the intersection with another contour or part of a contour (segment), or to the intersection with a virtual line through a given point.

Instructions:

1. In the Modify menu, click Trim, then To Entity.

   The order of interaction is of type group trim, that means, first the trimming entity is defined, then the contours to trim are indicated, one by one.

2. The trimming entity

   The interaction starts by asking the user to define the trimming entity. This entity can be defined in three ways, namely:

   • As a point

   • As a segment, that means, a part of a contour

   • As a contour

     If trim to point, the trimming entity is defined as a virtual line, passing through a user-defined point and perpendicular to the contour to trim.

     If trim to segment, the trimming segment is indicated by user. It it also possible to define a virtual segment. If the segment is a line, it will be considered unrestricted.

     If trim to contour, the trimming contour is indicated by user.

     The way to define the trimming entity is modal. To change the trimming entity definition, click Options and select the desired alternative from a multiple choice dialog.

     Once defined, the trimming entity will be highlighted and the interaction continues by asking the user to indicate the contours to trim, one by one.

3. The contours to trim

   The contours to trim are indicated, one by one. Each contour will be trimmed against the trimming entity if possible. Single-segment contours will be trimmed without confirmation if there is only one possible trimming alternative. Otherwise, the result of the trimming operation must be confirmed by user.

   The trim operation may result in an extended contour. A multiple-segment contour will always be extended in the end segment, closest to the user indication. If the segment is an arc, there are two extension alternatives:

   • appending a tangent

   • extending the length

     This arc extension strategy is modal. To change the strategy, click Options and select desired alternative.

     To define a new trimming entity, click Operation Complete.

Options:

None.

Result:

User-indicated contours will be shortened or extended according to User's action