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