void GetProjParams(Camera c, out Vector3 wCamMinOnPlane, out Vector3 wCamMaxOnPlane)
{
if (c.orthographic)
{
var camPos = c.transform.position;
var size = (c.transform.up + c.transform.right * c.aspect) * c.orthographicSize;
var camMin = camPos - size;
var camMax = camPos + size;
var plane = new Plane(transform.up, transform.position);
float enter;
var r = new Ray(camMin, c.transform.forward);
plane.Raycast(r, out enter);
camMin = r.GetPoint(enter);
r = new Ray(camMax, c.transform.forward);
plane.Raycast(r, out enter);
camMax = r.GetPoint(enter);
wCamMinOnPlane = new Vector3(
Mathf.Min(camMin.x, camMax.x),
Mathf.Min(camMin.y, camMax.y),
Mathf.Min(camMin.z, camMax.z));
wCamMaxOnPlane = new Vector3(
Mathf.Max(camMin.x, camMax.x),
Mathf.Max(camMin.y, camMax.y),
Mathf.Max(camMin.z, camMax.z));
}
else
{
var corners = c.ProjectFrustumOnXZPlane();
float minX, maxX, minY, maxY, minZ, maxZ;
MUtils.MinMax(out minX, out maxX, corners[0].x, corners[1].x, corners[2].x, corners[3].x);
MUtils.MinMax(out minY, out maxY, corners[0].y, corners[1].y, corners[2].y, corners[3].y);
MUtils.MinMax(out minZ, out maxZ, corners[0].z, corners[1].z, corners[2].z, corners[3].z);
wCamMinOnPlane = new Vector3(minX, minY, minZ);
wCamMaxOnPlane = new Vector3(maxX, maxY, maxZ);
}
}