4.4. Mouse

Mouse Modifiers

Ctrl:

“controls” or changes the action

Shift:

aligns to grid, or to intersections of bodies

ESCape:

cancels the active action, selection of bodies, zones

Left button
click:

User selectable action from the tools

+Shift:

Add to the selection

+Control:

Toggle the selection of the clicked item

+Shift+Control:

Remove from the selection

Middle button
click:

Centers viewport to hit object The hit distance is used for rotation as well

drag-alone:

Pan/Move viewport

+Shift:

select rectangle area and zoom into

+Shift+Ctrl:

select rectangle area and zoom out

+Ctrl:

rotate projection using a virtual trackball

+Ctrl+Shift:

rotate projection using a virtual trackball with steps of 15 deg

Right button
alone:

brings up the pop-up menu (or Ctrl-Spacebar):

+Shift:

Pan/Move viewport

+Ctrl:

rotate projection using a virtual trackball

Mouse Wheel
alone:

Zoom In/Out current viewport by 20%

+Shift:

Zoom In/Out current viewport by 2%

+Ctrl:

Move current viewport forward/backwards

+Ctrl+Shift:

Moves viewport with smaller intervals

Note

Ctrl+Shift is different than Shift+Ctrl. The order is important which key is pressed first when the mouse action starts

Example
  1. Ctrl + Middle-Button Starts the rotation then pressing

  2. + Shift while continue the rotation aligning to 15deg intervals

  1. Shift + Middle-Button Starts drawing the rectangle for zooming in

  2. + Ctrl Changes the direction of the zoom to Out

When laptop mode is enabled in the Preferences then the middle and right buttons are swapped