Pixel Perfect camera that supports landscape and portrait modes

PixelPerfectCamera.cs

using UnityEngine;
using System.Collections;
using UnityEngine.UI;

public enum ScaleDirection{
	Width,
	Height
}

public class PixelPerfectCamera : MonoBehaviour {

	public static float pixelsToUnits = 1f;
	public static float scale = 1f;

	public Vector2 nativeResolution = new Vector2 (240, 160);
	public ScaleDirection scaleDirection = ScaleDirection.Height;

	void Awake () {
		var camera = GetComponent<Camera> ();
		
		pixelsToUnits = 1f;
		scale = 1f;
		
		if (camera.orthographic) {

			var dir = Screen.height;
			var res = nativeResolution.y;

			if (scaleDirection == ScaleDirection.Width) {
				res = nativeResolution.x;
			}


			scale = dir/res;
			pixelsToUnits *= scale;


			camera.orthographicSize = (dir / 2.0f) / pixelsToUnits;
		}
	}

}