protected internal override void PreSpecularRender(Camera receiver)
{
// Called before any portal cameras are rendered for the current frame
Teleportation.SliceTravellers(_tracked_travellers: ref this._tracked_travellers,
portal: this,
receiver: receiver);
}
void OnTriggerEnter(Collider other)
{
var traveller = other.GetComponent <PortalTraveller>();
if (traveller)
{
Teleportation.OnTravellerEnterPortal(traveller: traveller, this_portal: this);
}
}
protected internal override void PostSpecularRender(Camera receiver)
{
// Called once all portals have been rendered, but before the player camera renders
Teleportation.SliceTravellers(_tracked_travellers: ref this._tracked_travellers,
portal: this,
receiver: receiver);
Rendering.ProtectScreenFromClipping(view_point: receiver.transform.position,
this_portal: this,
receiver: receiver);
}
void LateUpdate()
{
Teleportation.HandleTravellers(_tracked_travellers: ref this._tracked_travellers,
linkedPortal: this.linkedPortal,
transform: this.transform);
}
internal static void HandleClipping(Portal this_portal, Camera receiver)
{
// There are two main graphical issues when slicing travellers
// 1. Tiny sliver of mesh drawn on backside of portal
// Ideally the oblique clip plane would sort this out, but even with 0 offset, tiny sliver still visible
// 2. Tiny seam between the sliced mesh, and the rest of the model drawn onto the portal screen
// This function tries to address these issues by modifying the slice parameters when rendering the view from the portal
// Would be great if this could be fixed more elegantly, but this is the best I can figure out for now
const float hide_dst = -1000;
const float show_dst = 1000;
var screen_thickness =
ProtectScreenFromClipping(view_point: this_portal._Specular_Camera.transform.position,
this_portal: this_portal.linkedPortal,
receiver: receiver);
for (var index = 0; index < this_portal.TrackedTravellers.Count; index++)
{
var traveller = this_portal.TrackedTravellers[index : index];
if (Teleportation.SameSideOfPortal(pos_a : traveller.transform.position,
pos_b : this_portal._Specular_Camera.transform.position,
portal : this_portal))
{
// Addresses issue 1
traveller.SetSliceOffsetDst(dst: hide_dst, false);
}
else
{
// Addresses issue 2
traveller.SetSliceOffsetDst(dst: show_dst, false);
}
// Ensure clone is properly sliced, in case it's visible through this portal:
var clone_side_of_linked_portal =
-Teleportation.SideOfPortal(pos: traveller.transform.position, portal: this_portal);
var cam_same_side_as_clone =
Teleportation.SideOfPortal(pos: this_portal._Specular_Camera.transform.position,
portal: this_portal.linkedPortal)
== clone_side_of_linked_portal;
if (cam_same_side_as_clone)
{
traveller.SetSliceOffsetDst(dst: screen_thickness, true);
}
else
{
traveller.SetSliceOffsetDst(dst: -screen_thickness, true);
}
}
//var offset_from_portal_to_cam = this.PortalCamPos - this.transform.position;
for (var index = 0; index < this_portal.linkedPortal.TrackedTravellers.Count; index++)
{
var linked_traveller = this_portal.linkedPortal.TrackedTravellers[index : index];
var traveller_pos = linked_traveller.graphicsObject.transform.position;
var clone_pos = linked_traveller.GraphicsClone.transform.position;
// Handle clone of linked portal coming through this portal:
var clone_on_same_side_as_cam =
Teleportation.SideOfPortal(pos: traveller_pos, portal: this_portal.linkedPortal)
!= Teleportation.SideOfPortal(pos: this_portal._Specular_Camera.transform.position,
portal: this_portal);
if (clone_on_same_side_as_cam)
{
// Addresses issue 1
linked_traveller.SetSliceOffsetDst(dst: hide_dst, true);
}
else
{
// Addresses issue 2
linked_traveller.SetSliceOffsetDst(dst: show_dst, true);
}
// Ensure traveller of linked portal is properly sliced, in case it's visible through this portal:
var cam_same_side_as_traveller =
Teleportation.SameSideOfPortal(pos_a: linked_traveller.transform.position,
pos_b: this_portal._Specular_Camera.transform.position,
portal: this_portal.linkedPortal);
if (cam_same_side_as_traveller)
{
linked_traveller.SetSliceOffsetDst(dst: screen_thickness, false);
}
else
{
linked_traveller.SetSliceOffsetDst(dst: -screen_thickness, false);
}
}
}