HeavenStudio/Assets/Plugins/Starpelly/ScreenUtility.cs
2021-12-18 23:10:43 -05:00

111 lines
2.9 KiB
C#

using UnityEngine;
public static class ScreenUtility
{
public static Camera camera;
public static float Left
{
get
{
if (camera)
return camera.ViewportToWorldPoint(new Vector3(0f, 0f, 0f)).x;
if (Camera.main)
return Camera.main.ViewportToWorldPoint(new Vector3(0f, 0f, 0f)).x;
return 0.0f;
}
}
public static float Right
{
get
{
if (camera)
return camera.ViewportToWorldPoint(new Vector3(1.0f, 0f, 0f)).x;
if (Camera.main)
return Camera.main.ViewportToWorldPoint(new Vector3(1.0f, 0f, 0f)).x;
return 0.0f;
}
}
public static float Top
{
get
{
if (camera)
return camera.ViewportToWorldPoint(new Vector3(0f, 1.0f, 0f)).y;
if (Camera.main)
return Camera.main.ViewportToWorldPoint(new Vector3(0f, 1.0f, 0f)).y;
return 0.0f;
}
}
public static float Bottom
{
get
{
if (camera)
return camera.ViewportToWorldPoint(new Vector3(0f, 0f, 0f)).y;
if (Camera.main)
return Camera.main.ViewportToWorldPoint(new Vector3(0f, 0f, 0f)).y;
return 0.0f;
}
}
public static Vector3 Center
{
get
{
if (camera)
return camera.ViewportToWorldPoint(new Vector3(0.5f, 0.5f, 0f));
if (Camera.main)
return Camera.main.ViewportToWorldPoint(new Vector3(0.5f, 0.5f, 0f));
return Vector3.zero;
}
}
public static bool ScreenContainsPoint(Vector3 worldPosition)
{
return Camera.main.rect.Contains(Camera.main.WorldToViewportPoint(worldPosition));
}
public static void ConstrainCamera(Camera camera, Bounds bounds)
{
float left = camera.ViewportToWorldPoint(new Vector3(0f, 0f, 0f)).x;
float right = camera.ViewportToWorldPoint(new Vector3(1.0f, 0f, 0f)).x;
float top = camera.ViewportToWorldPoint(new Vector3(0f, 1.0f, 0f)).y;
float bottom = camera.ViewportToWorldPoint(new Vector3(0f, 0f, 0f)).y;
if (top > bounds.max.y)
{
float topDiff = bounds.max.y - top;
camera.transform.position += new Vector3(0, topDiff, 0);
}
else if (bottom < bounds.min.y)
{
float botDiff = bounds.min.y - bottom;
camera.transform.position += new Vector3(0, botDiff, 0);
}
if (right > bounds.max.x)
{
float rightDiff = bounds.max.x - right;
camera.transform.position += new Vector3(rightDiff, 0, 0);
}
else if (left < bounds.min.x)
{
float leftDiff = bounds.min.x - left;
camera.transform.position += new Vector3(leftDiff, 0, 0);
}
}
}