Edit 2D Paths. 2D Constructs

If a 2D path is selected in the construction lines editing command, then pressing <Enter> or clicking anywhere within the drawing window enables the path's contour editing mode.

Path's contour editing allows you to add or remove anchor points; choose another construction line connecting the nodal points of a separate section of the path; change the direction of the path, change the numbering of points, as well as set new parameters.

Modifying relations between construction lines

To modify the type of a particular path segment, do the following steps:

•Select a path ;

•Using the mouse , select the path segment whose type needs to be modified;

•Select a construction entity defining the new type of the path segment: line, circle, ellipse and spline (including other 2D paths). Selection of a construction entity is done using the appropriate option. The end nodes of the path segment being edited must belong to the selected construction entities;

• Exit the particular path segment editing mode by right-clicking or pressing <Esc> on the keyboard;

• Confirm changes by the option  or <Ctrl>+<Enter>.

Creating additional nodal points on the path contour

To create additional nodal points of the path contour, you must perform the following set of actions:

•choose a path ;

•select a site for editing ;

•select the option Add point mode;

•select the position of the new point ;

•exit edit mode ;

•accept changes or <Ctrl + Enter>.

Deleting a node inside path contour

To remove the nodal point of the path, you must perform the following set of actions:

•choose a path ;

•select a section of the path that is limited by the node that you want to delete;

•select a node ;

•press the <Del>;

•accept changes or <Ctrl + Enter>.

Consider an example in which a straight section of the path must be replaced by a section along an arc of a circle. In this case, the points of tangency of the circle do not coincide with the points of start and end of the rectilinear section.

•choose a path ;

•select the section of the path that you want to change;

•select and move the first node of the site to the point of tangency of the line and the circle (moving the node is described in the subsection above);

•select and move the second site node to the point of tangency of the line and the circle;

•select the section of the path that you want to change again;

•select the type of line according to which the path should follow (in this case, a circle);

•indicate the line (in this case, the circle) in the drawing;

•accept changes or <Ctrl + Enter>.

Displaying the contour point numbers

To toggle the display of the contour point numbers of a 2D path, use the option:

With the option turned on, the points in the path are enumerated based on their position in the path and the path direction. A point number is displayed next to the respective node. When several subsequent points of a contour coincide, their numbers are displayed next to each other, separated by commas.

Delete contour

To delete a contour, use the option:

Edit closed paths

For closed paths, three additional options are available: