how to position game objects in unity3d

Positioning GameObjects

See Positioning Game Objects for full details on positioning GameObjects in the scene. Here’s a brief overview of the essentials:
When building your games, you’ll place lots of different objects in your game world. To do this use the Transform Tools in the Toolbar to Translate, Rotate, and Scale individual GameObjects. Each has a corresponding Gizmo that appears around the selected GameObject in the Scene View. You can use the mouse and manipulate any Gizmo axis to alter the Transform Component of the GameObject, or you can type values directly into the number fields of the Transform Component in the Inspector.


Scene View Control Bar:

The control bar lets you choose various options for the scene view. You can switch on or off the audio, lighting and 2D mode and also control how objects, image effects and gizmos will be displayed.

Game View:

The Game View is rendered from the Camera(s) in your game. It is representative of your final, published game. You will need to use one or more Cameras to control what the player actually sees when they are playing your game. For more information about Cameras, please view the Camera Component page.

Game View Control Bar:


The first drop-down on the Game View control bar is the Aspect Drop-down. Here, you can force the aspect ratio of the Game View window to different values. It can be used to test how your game will look on monitors with different aspect ratios.
Further to the right is the Maximize on Play toggle. While enabled, the Game View will maximize itself to 100% of your Editor Window for a nice full-screen preview when you enter Play mode.
The last button is the Gizmos toggle. While enabled, all Gizmos that appear in Scene View will also be drawn in Game View. This includes Gizmos drawn using any of the Gizmos class functions. The Gizmos button also has a popup menu showing the various different types of Components used in the game.
The Gizmo setting enables you to selectively disable Gizmo drawing for specific components.
The 3D Gizmos setting at the top of the menu refers to the Gizmo icons. With the setting enabled, the icons will show the perspective of the camera (ie, icons for nearby objects will be larger than those for distant objects), otherwise they will be the same size regardless of distance. The slider next to the checkbox allows you to vary the size of the icons, which can be useful for reducing clutter when there are a lot of gizmos visible

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