Edit Polyline

Red balls will be displayed on vertices.

Small blue balls will be displayed on segments.

These balls are displayed according to the current zoom factor.

Select vertices:

• Click red balls individually (with CTRL key to add to the current selection).

• Make a rectangular selection with SHIFT key.

You can:

• Drag and drop them.

• Press DEL to remove them.

• Vertices can be selected even if they are not displayed (due to the current zoom factor).

• Press V to switch on/off snapping when making a drag and drop.

1. Keep the mouse on a ball to display options, then choose one:

   1. : add new segments:

      1. DEL: undo the last created segment,

      2. ESC: cancel the new segments and exit the option,

      3. ENTER: validate the new segments and exit the option.

   2. : add new perpendicular segments. Select the current mode with SPACE:

      1. Free mode: give a point to define each segment length.

         1. DEL: undo the last created segment,

         2. ESC: cancel the new segments and exit the option,

         3. ENTER: validate the new segments and exit the option.

      2. Junction mode: add a new perpendicular segment, extend it to another polyline, then merge both polylines. Hover the polyline to join, to visualize possible combinations in magenta.

      3. Intersection mode: add a new perpendicular segment and extend it to another clicked polyline. Both polylines will not be merged.

   3. : extend or shorten the segment. Select the current mode with SPACE:

      1. Free mode: give a point to define the new segment length.

      2. Junction mode: extend the segment to another polyline, then merge both polylines. Hover the polyline to join, to visualize possible combinations in magenta.

      3. Intersection mode: extend the segment to another polyline. Both polylines will not be merged. Hover the other polyline to visualize the result in magenta.

   4. : add or insert a discretized arc.

      1. blue ball to insert a discretized arc: give an intermediary point and define the maximal deviation allowed.

      2. red ball to extend with a discretized arc:

         1. 3 points arc: give an intermediary point and the extremity, then define the maximal deviation allowed.

         2. tangent arc: give the extremity and define the maximal deviation allowed. The created arc will be tangent to the previous segment.

      3. ⚠️ Maximal deviation allowed ⚠️

         • the value will be highlighted in orange if more than 100 vertices will be inserted.

         • the value will be highlighted in red

           • if negative

           • if higher than the current deviation: in such case, only one vertex will be added on the given point (like "Insert a new vertex" mode).

   5. : insert a new vertex.

2. Repeat with another option.

Press ESC to invalidate the whole edition session or ENTER to validate and exit the edition command.