Navigation
Note:This article was originally written for 
Dota 2, but the content of this page also largely applies to all other 
Source 2 games.3D Viewport
There are various methods to navigate in Hammer's 3D viewport.
Right-Mouse-Button WASD Toggle
Hold right-mouse-button 
to swivel the camera around and use WASD to move.
Swivel the camera around W Move the camera forward S Move the camera back A Moves the camera left D Moves the camera right
Fly Mode
Pressing Z enters "fly" mode without the requirement of holding the right-mouse-button. WASD is still used to control movement.
This method is useful when working on a piece of geometry that you want to focus on and move around rapidly.
Alt+ 
Rotate around the center of the screen ⇧ Shift+A Reset the center point on selected geometry Alt+ Zoom Alt+ 
Camera look movement
Active Viewport
In previous iterations of Hammer, the active viewport was determined by your current cursor position. This has changed. The active viewport in Hammer is now shown by a red bounding box around the active viewport. To change the active viewport, you must hover over it with your cursor and press one of the mouse buttons. It's recommended to press-and-drag or press to change the active viewport since can deselect or select different objects.
2D Viewports
- - Hold down to pan in a 2D viewport
- - Zooms in/out
- Ctrl+Spacebar - Cycle between Top, Front, and Side 2D views
- F2 - Top 2D view
- F3 - Front 2D view
- F4 - Side 2D view
Next: Hammer Overview