Camera & Viewport

Camera controls, object selection and the transform gizmo.

The viewport is an interactive preview of the scene. Camera and selection controls:

Mouse

Action	Result
`Left mouse click`	Select an object
`Ctrl` + `Left mouse click`	Add/remove an object from the selection
`Middle mouse button` drag	Pan the camera
`Right mouse button` drag	Orbit the camera
`Mouse wheel`	Zoom in / out
`Right mouse click` (without dragging)	Open the context menu

Keyboard shortcuts work while the viewport has focus. Click anywhere in the viewport once to give it focus.

Action	Result
`Arrow Up` / `Arrow Down` / `Arrow Left` / `Arrow Right`	Pan the camera
`+` / `-`	Zoom in / out

A single click selects the topmost object under the cursor; Ctrl + click builds a multi-selection.
The transform gizmo appears when exactly one object is selected. Multi-selections get selection boxes only.
Switch the gizmo mode with T (translate), R (rotate) or S (scale), or hide the gizmo entirely with Q (selection only); the toolbar in the top-left corner of the viewport does the same.
Drag the gizmo arrows to move, rings to rotate, boxes to scale along the corresponding axis.

Spectrum Interface

The Spectrum window layout: header with panel tabs, the Outliner, Settings, Materials and Properties sidebars, and the viewport context menu.

Editing Property Values in Spectrum

Arithmetic expressions in Spectrum numeric fields: syntax, supported functions and value input rules.