Mouse Operations

By default, the mouse snaps to the nearest object, which is the previewed with different color. When clicked with the primary mouse button, object is selected and it becomes a new active object.

Some modes (such as adding a new line) accept both existing object coordinates and mouse coordinates anywhere on the screen. Same snapping principle applies here: if the mouse is near enough for snapping preview, the object coordinates are used. Otherwise mouse location on the screen is used.

the object snapping can be turned on or off from the secondary popup menu.

Note that the mouse location is valid only in the 2D-mode. Existing object coordinates can be used also in 3D-mode.

Continuous movement

Some operations may use continuous mouse tracking with the Shift-key. These allow painting-style operations over the larger area.

Double-click

Double-clicking objects (points or lines) opens their editing tools. Double-clicking with the Shift-key duplicates the object before opening the editing tool.

Rubber band

Some editing modes create a rubber band line between the previous point and the mouse location. It just visualizes the line between two locations and has no other effect.

Secondary button

The secondary mouse button opens either the editing popup menu or, with the Shift-key, the settings popup memu.