void OnEnvironmentOffsetChanged()
{
// Force update of X-Ray values for new position/scale
m_LastXRay = null;
ClearColliderChanges();
}
void OnBeforeCompositeCamerasRender(CompositeRenderContext compositeRenderContext)
{
if (!compositeRenderContext.UseXRay)
{
Shader.DisableKeyword(k_XRayEnabledKeyword);
ClearColliderChanges();
return;
}
// Determine which type of scene is being operated on, regular scene view, simulation view, or prefab isolation
var camera = compositeRenderContext.IsBaseSceneView || !compositeRenderContext.UseCompositeCamera?
compositeRenderContext.TargetCamera :
compositeRenderContext.CompositeCamera;
var cameraScene = camera.scene;
// camera using default scene
if (cameraScene.handle == 0)
{
cameraScene = SceneManager.GetActiveScene();
}
// Game view and sim views use the sim env scene
if (!compositeRenderContext.IsBaseSceneView && m_SimulationSceneModule.IsSimulationReady &&
compositeRenderContext.UseCompositeCamera)
{
cameraScene = m_SimulationSceneModule.EnvironmentScene;
}
if (!XRayRuntimeUtils.XRayRegions.TryGetValue(cameraScene, out var activeXRay))
{
Shader.DisableKeyword(k_XRayEnabledKeyword);
ClearColliderChanges();
return;
}
// If the selected XRay data has changed, update the active X-Ray values for physics and shader
if (m_LastXRay != activeXRay)
{
m_LastXRay = activeXRay;
if (activeXRay != null)
{
var transform = activeXRay.transform;
// Scale can vary between views and prefabs, so we grab 'ground truth' from the active XRay Region
m_XRayScale = transform.lossyScale.x;
m_XRayCenter = transform.position;
m_XRayFloorHeight = activeXRay.FloorHeight;
m_XRayCeilingHeight = activeXRay.CeilingHeight;
m_XRayThickness = activeXRay.ClipOffset;
m_XRayRoomWidth = Mathf.Max(activeXRay.ViewBounds.x, activeXRay.ViewBounds.z);
}
else
{
m_XRayScale = k_DefaultScale;
m_XRayCenter = Vector3.zero;
m_XRayFloorHeight = k_DefaultFloorHeight;
m_XRayCeilingHeight = k_DefaultCeilingHeight;
m_XRayThickness = k_DefaultThickness;
m_XRayRoomWidth = k_DefaultRoomWidth;
}
}
Shader.SetGlobalVector(k_RoomCenterShaderID, m_XRayCenter);
Shader.SetGlobalFloat(k_FloorHeightShaderID, m_XRayFloorHeight);
Shader.SetGlobalFloat(k_CeilingHeightShaderID, m_XRayCeilingHeight);
Shader.SetGlobalFloat(k_ClipOffsetShaderID, m_XRayThickness);
Shader.SetGlobalFloat(k_XRayScaleID, m_XRayScale);
Shader.EnableKeyword(k_XRayEnabledKeyword);
SetXRayDirectionKeyword();
// Do not disable XRay colliders in environment scene because reverting those changes causes the environment prefab instance
// to stop running in edit mode. There is no need to disable these colliders when dragging into the Simulation view
// because the Simulation view only supports dropping assets onto simulated data interaction targets.
if (cameraScene.handle == m_SimulationSceneModule.EnvironmentScene.handle)
{
return;
}
// Is there an object being dragged?
// If so, do collision logic
// Otherwise, cancel it
if (!m_ScenePlacementModule.isDragging || compositeRenderContext.ContextViewType == ContextViewType.GameView)
{
ClearColliderChanges();
}
else
{
if (m_PhysicsInitialized)
{
return;
}
m_PhysicsInitialized = true;
// Ensure we are operating in isolation physics scene if in prefab mode
var physicsScene = cameraScene.IsValid() ? cameraScene.GetPhysicsScene() : Physics.defaultPhysicsScene;
var scaledFloor = m_XRayScale * m_XRayFloorHeight;
var scaledCeiling = m_XRayScale * m_XRayCeilingHeight;
var scaledThickness = m_XRayScale * m_XRayThickness;
var scaledWidth = m_XRayScale * m_XRayRoomWidth;
// Create a physics box that lines up with the clipping plane the XRay Shader uses
// Get all the colliders inside of that and temporarily disable them
var roomHeight = scaledCeiling - scaledFloor;
var roomOffset = (scaledFloor + scaledCeiling) * 0.5f;
var cameraToCenter = camera.transform.position - m_XRayCenter;
if (cameraToCenter.y > scaledCeiling)
{
roomHeight += k_VerticalClipRange;
roomOffset += k_VerticalClipOffset;
}
if (cameraToCenter.y < scaledFloor)
{
roomHeight += k_VerticalClipRange;
roomOffset -= k_VerticalClipOffset;
}
cameraToCenter.y = 0.0f;
var cameraDistance = cameraToCenter.magnitude;
cameraToCenter.Normalize();
// Offset towards the camera half the camera distance as the box is centered
var boxCenter = m_XRayCenter + ((cameraDistance * 0.5f + scaledThickness) * cameraToCenter);
boxCenter.y = m_XRayCenter.y + roomOffset;
var boxExtents = new Vector3(scaledWidth, roomHeight, cameraDistance) * 0.5f;
var boxOrientation = Quaternion.LookRotation(cameraToCenter.normalized, Vector3.up);
var collisionCount = physicsScene.OverlapBox(boxCenter, boxExtents, k_Colliders, boxOrientation);
// Go through colliders and disable - only if they have the XRay collider component
for (var i = 0; i < collisionCount; i++)
{
var currentCollider = k_Colliders[i];
if (!currentCollider.enabled || !currentCollider.TryGetComponent(out XRayCollider _))
{
continue;
}
currentCollider.enabled = false;
m_DisabledColliders.Add(currentCollider);
}
}
}
