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---
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title: '3D Object annotation (basics)'
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linkTitle: '3D Object annotation'
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weight: 17
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description: 'Overview of basic operations available when annotating 3D objects.'
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---
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### Navigation
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To move in 3D space you can use several methods:
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- Select the `move the image` tool so you can move the camera using the mouse:
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- Hold down the left mouse button in the perspective window to turn the camera around the conditional point.
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- Hold down the right mouse button in the perspective window to move the camera inside the 3D space.
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- Move the mouse while holding down the wheel to zoom in/out in the perspective window.
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- Scroll the wheel to zoom in/out (works both in perspective and in projections).
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- Move using the keys in the perspective window
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You can move around by pressing the corresponding buttons:
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- To rotate the camera use: `Shift+arrrowup`/`Shift+arrrowdown`/`Shift+arrrowleft`/`Shift+arrrowright`.
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- To move left/right use: `Allt+J`/`Alt+L`.
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- To move up/down use: `Alt-U`/`Alt+O`.
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- To zoom in/out use: `Alt+K`/`Alt+I`.
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### Creating a cuboid
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To create a cube in a 3D task you need to click the appropriate icon on the control sidebar,
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select the label of the future object and click `shape`.
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After that the cursor will be followed by a cube. In the creation process you can rotate and move the camera
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only using the keys. Left double-click will create an object.
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You can place an object only near the dots of the point cloud.
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To adjust the size precisely, you need to edit the cuboid on the projections, for this change `Сursor` on control
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sidebar or press `Esc`. In each projection you can:
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Move the object in the projection plane - to do this, hover over the object,
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press the left mouse button and move the object.
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Move one of the four points - you can change the size of the cuboid by dragging the points in the projection.
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Rotate the cuboid in the projection plane – to rotate the cuboid you should click on the appropriate point
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and then drag it up/down or to the left/right.
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