private void UpdateReflectionCamera(Camera realCamera)
{
if (_reflectionCamera == null)
{
_reflectionCamera = InitializeReflectionCamera();
}
Vector3 pos = Vector3.zero;
Vector3 normal = Vector3.up;
if (reflectionTarget != null)
{
pos = reflectionTarget.transform.position + Vector3.up * reflectionPlaneOffset;
normal = reflectionTarget.transform.up;
}
UpdateCamera(realCamera, _reflectionCamera);
_reflectionCamera.gameObject.hideFlags = (hideReflectionCamera) ? HideFlags.HideAndDontSave : HideFlags.DontSave;
#if UNITY_EDITOR
EditorApplication.DirtyHierarchyWindowSorting();
#endif
var d = -Vector3.Dot(normal, pos);
var reflectionPlane = new Vector4(normal.x, normal.y, normal.z, d);
var reflection = Matrix4x4.identity;
reflection *= Matrix4x4.Scale(new Vector3(1, -1, 1));
PlanarReflections.CalculateReflectionMatrix(ref reflection, reflectionPlane);
var oldPosition = realCamera.transform.position - new Vector3(0, pos.y * 2, 0);
var newPosition = PlanarReflections.ReflectPosition(oldPosition);
_reflectionCamera.transform.forward = Vector3.Scale(realCamera.transform.forward, new Vector3(1, -1, 1));
_reflectionCamera.worldToCameraMatrix = realCamera.worldToCameraMatrix * reflection;
var clipPlane = CameraSpacePlane(_reflectionCamera, pos - Vector3.up * 0.1f, normal, 1.0f);
var projection = realCamera.CalculateObliqueMatrix(clipPlane);
_reflectionCamera.projectionMatrix = projection;
_reflectionCamera.cullingMask = reflectionLayer;
_reflectionCamera.transform.position = newPosition;
}
