The most basic way of navigating this space is called orbiting. Orbiting is the rough equivalent of rotating the 3D world around a fixed point in space. In order to orbit in Blender, middle-click anywhere in the 3D Viewport and drag your mouse cursor around.
Occasionally, you have the need to keep your orientation to the world, but you’ll want to move it around so that you can see a different part of the scene from the same angle. In Blender, this movement is called panning, and you do it by holding Shift while middle-clicking and dragging your mouse cursor in the 3D Viewport. Now when you drag your mouse cursor around, the world shifts around without changing the angle that you’re viewing from.
The third way of navigating 3D space is when you want to get closer to an object in your scene. Similar to working with a camera, this movement is called zooming the view. In Blender, you can zoom in two ways. The easiest method is by using your mouse’s scroll wheel. By default, scrolling forward zooms in and scrolling back zooms out. However, this method doesn’t always give you fine-grained control, and, even worse, some people don’t have a mouse with a scroll wheel. In these cases, you can zoom by holding Ctrl while middle-clicking in the 3D Viewport. Now, when you drag your mouse cursor up, you zoom in, and when you drag your mouse cursor down, you zoom out. If you prefer to move your mouse horizontally rather than vertically for zooming, you can adjust this behavior in the Navigation section of Preferences.
TABLE 2-1 Keyboard/Mouse Keys for Navigating 3D Space
| Navigation | Three-Button Mouse | Emulated 3-Button Mouse |
| Orbit | Middle-click | Alt+left-click |
| Pan | Shift+middle-click | Shift+Alt+left-click |
| Zoom | Ctrl+middle-click | Ctrl+Alt+left-click |
Navigation mini-axes: This unique widget not only shows you the orientation from which you’re viewing your 3D scene, but it also gives you immediate control over orbiting the view. Click and drag on these colored axes to orbit your view just like you would by middle-clicking. As an additional bonus feature, if you click any of the circles at the extent of any of these axes, Blender automatically gives you a view of your scene as if looking down that axis. This method is a very quick way of seeing the front, side, and top views of an object you’re making.
Zoom control: Click and drag this icon to zoom in and out of your scene. Just like Ctrl+middle-clicking, move your mouse cursor up to zoom in and down to zoom out.
Pan control: Click and drag this icon to pan the view. This is the same as Shift+middle-clicking and dragging anywhere in the 3D Viewport.
Camera view toggle: Click the camera icon to toggle between your normal user view of the 3D scene and the view from the perspective of your camera object.FIGURE 2-2: Navigation controls at the top right of the 3D Viewport give you fast mouse-based control over how you see your 3D scene.
Perspective/Orthographic projection toggle: Click this icon to switch between perspective and orthographic views. The orthographic view of a 3D scene is similar to how technical drawings and blueprints are done. If two objects are the same size, they always appear to be the same size, regardless of how far away from you they are. This view is ideal for getting sizes and proportions correct in your models, especially if they’re based on blueprints or technical drawings. The perspective view is more akin to how you actually see things. That is, objects in the distance look smaller than objects that are near you.
Changing views
Although using the mouse to work your way around the 3D space is the most common way to adjust how you view things, Blender has some menu items and hotkey sequences that help give you specific views much faster and more accurately than you can do alone with your mouse.
The View menu
On occasion, you want to know what a model looks like when it’s viewed directly from the front, side, or top. Blender has some convenient shortcuts for quickly switching to these views. Aside from the navigation controls in the upper right of the 3D Viewport, the most obvious way to change views is to use the View ⇒ Viewpoint menu in the 3D Viewport’s header, as shown on the left of Figure 2-3. This menu lets you choose a variety of angles, including the top, front, right, and the view from the active camera in your scene.
