I have what seems to be a common issue on the tubes, but a conclusive answer is hard to find so maybe the gurus here can help.
I’d like to force my game to 16:9 landscape on iOS and Android. Now forcing landscape is easily done in the build settings, and for UI Canvas I can achieve this easily. The problem I’m finding is with the camera.
On a 16:9 device, it’s obviously fine as the Canvas and camera are set up for 16:9. However on a 4:3 device (e.g. iPad) I would like the game to be letterboxed top and bottom (i.e. force the viewport to 16:9) but this seems to be hard to achieve.
One option I thought of is to have a black UICanvas “gobo” over the game to fake a letterbox, but there must be a better way… is there?
TIA
Actually I found a little script on Reddit that seems to do the trick when added to a Camera prefab. I’ll see if this has any unwanted effects down the track.
using UnityEngine;
public class CameraRatio : MonoBehaviour {
void Start () {
float targetaspect = 16.0f / 9.0f;
float windowaspect = (float)Screen.width / (float)Screen.height;
float scaleheight = windowaspect / targetaspect;
Camera camera = GetComponent<Camera>();
// if scaled height is less than current height, add letterbox
if (scaleheight < 1.0f) {
Rect rect = camera.rect;
rect.width = 1.0f;
rect.height = scaleheight;
rect.x = 0;
rect.y = (1.0f - scaleheight) / 2.0f;
camera.rect = rect;
} else { // else add pillarbox
float scalewidth = 1.0f / scaleheight;
Rect rect = camera.rect;
rect.width = scalewidth;
rect.height = 1.0f;
rect.x = (1.0f - scalewidth) / 2.0f;
rect.y = 0;
camera.rect = rect;
}
}
}
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