Center, move and zoom camera to selected gameObjects

Questions & Answers
1

I have a 9x9 grid of gameObjects from the X and Y axis, 81 gameObjects. I want to have all of the gameObjects visible to the camera view. The camera I have is stationary and does not move for the entire game. I found myself constantly adjusting the camera’s view and FOV whenever I add or remove gameObjects to the grid.

private var rows = 9;
private var collumns = 9;
static var blocks : GameObject[,];


function Start() {
	blocks = new GameObject[collumns, rows];
	var i = 0;
	for (var y = 0; y < rows; y++) {
		for (var x = 0; x < collumns; x++) {
			blocks[x,y] = GameObject.CreatePrimitive(PrimitiveType.Cube);
			blocks[x,y].transform.localScale = Vector3(0.9, 0.9, 0.9);
			blocks[x,y].transform.position = Vector3(x,y,0);
			blocks[x,y].name = i.ToString();
			blocks[x,y].tag = 'block';
			i++;
		}
	}
}

I use the X and Y position of the gameObjects in the 2D array to make gameObjects easier and efficient to find.

Here’s what I want to accomplish on runtime with the camera:

  • Calculate the center/average position point of all gameObjects to change camera’s position
  • Calculate the camera’s Zoom/“Field of View” for all the gameObjects to fit in the shot, without the camera zoom being too far away.
2

Off the top of my head. To get the center you need to create a Bounds with the min and max vector of your array of objects. Once you’ve done that you can triangulate using the max distance on the ground (x/z) and the offset of the camera(y)

Vector3 offset = new Vector3(0,10f,0);
camera.transform.position = bounds.center + offset;
var maxShotDistance = Math.Max(bounds.extends.z, bounds.extends.x):

// adjust FOV