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using UnityEngine;
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#if UNITY_POST_PROCESSING_STACK_V2
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using UnityEngine.Rendering.PostProcessing;
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using System;
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#endif
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#if HDPipeline
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using UnityEngine.Rendering.HighDefinition;
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#endif
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using UnityEngine.Rendering;
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namespace Gaia
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{
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/// <summary>
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/// A script to handle auto focus for Gaia
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/// </summary
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public class AutoDepthOfField : MonoBehaviour
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{
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#region Variables
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public bool m_interactWithPlayer = true;
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public GaiaConstants.EnvironmentRenderer m_renderPipeLine = GaiaConstants.EnvironmentRenderer.BuiltIn;
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public GaiaConstants.DOFTrackingType m_trackingType = GaiaConstants.DOFTrackingType.FollowScreen;
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public float m_focusOffset = 0f;
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public Camera m_sourceCamera;
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public GameObject m_targetObject;
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public LayerMask m_targetLayer = 3585;
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public float m_maxFocusDistance = 100f;
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public float m_actualFocusDistance = 1f;
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public float m_dofAperture = 7.5f;
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public float m_dofFocalLength = 30f;
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public bool m_debug = false;
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private bool m_maxDistanceExceeded = false;
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private GameObject m_debugSphere;
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#if UNITY_POST_PROCESSING_STACK_V2
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private UnityEngine.Rendering.PostProcessing.DepthOfField m_dof;
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#endif
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/// <summary>
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/// Our last hit point
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/// </summary>
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private Vector3 m_dofTrackingPoint = Vector3.negativeInfinity;
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#endregion
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#region Unity Function
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/// <summary>
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/// Get the main camera if it doesnt exist
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/// </summary>
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private void Start()
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{
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SetupAutoFocus();
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GetCurrentDepthOfFieldSettings();
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}
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/// <summary>
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/// Apply on disable
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/// </summary>
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private void OnDisable()
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{
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if (GaiaUtils.CheckIfSceneProfileExists())
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{
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GaiaGlobal.Instance.SceneProfile.m_depthOfFieldFocusDistance = m_actualFocusDistance;
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}
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SetEditorDepthOfFieldSettings();
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}
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private void OnDestroy()
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{
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SetEditorDepthOfFieldSettings();
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SetDOFStatus(false);
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}
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/// <summary>
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/// Process DOF update
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/// </summary>
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private void Update()
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{
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if (m_renderPipeLine != GaiaConstants.EnvironmentRenderer.BuiltIn)
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{
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return;
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}
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#if UNITY_POST_PROCESSING_STACK_V2
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if (m_sourceCamera == null || m_dof == null)
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{
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return;
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}
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#endif
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//Update the focus target
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UpdateDofTrackingPoint();
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}
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#endregion
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#region Depth Of Field Functions
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public void SetDOFMainSettings(float aperture, float focalLength)
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{
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#if UNITY_POST_PROCESSING_STACK_V2
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if (m_dof == null)
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{
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GetDepthOfFieldComponent();
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}
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m_dof.aperture.value = aperture;
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m_dof.focalLength.value = focalLength;
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#endif
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}
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/// <summary>
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/// Do a raycast to update the focus target
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/// </summary>
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private void UpdateDofTrackingPoint()
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{
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switch (m_trackingType)
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{
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case GaiaConstants.DOFTrackingType.LeftMouseClick:
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{
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if (Input.GetMouseButton(0))
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{
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Ray ray = m_sourceCamera.ScreenPointToRay(Input.mousePosition);
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FocusOnRayCast(ray);
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}
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break;
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}
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case GaiaConstants.DOFTrackingType.RightMouseClick:
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{
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if (Input.GetMouseButton(1))
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{
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Ray ray = m_sourceCamera.ScreenPointToRay(Input.mousePosition);
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FocusOnRayCast(ray);
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}
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break;
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}
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case GaiaConstants.DOFTrackingType.FollowScreen:
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{
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Ray ray = new Ray(m_sourceCamera.transform.position, m_sourceCamera.transform.forward);
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FocusOnRayCast(ray);
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break;
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}
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case GaiaConstants.DOFTrackingType.FollowTarget:
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{
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m_dofTrackingPoint = m_targetObject.transform.position;
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break;
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}
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case GaiaConstants.DOFTrackingType.FixedOffset:
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{
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if (m_debug)
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{
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m_debug = false;
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Debug.Log("Debug mode is not available in Fixed Offset Tracking Mode. We have turned off Debug Mode for you.");
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}
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#if UNITY_POST_PROCESSING_STACK_V2
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m_dof.focusDistance.value = m_focusOffset;
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#endif
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break;
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}
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}
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if (m_debug)
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{
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if (!Vector3.Equals(m_dofTrackingPoint,Vector3.negativeInfinity) && (m_debugSphere == null || m_debugSphere.transform.position != m_dofTrackingPoint))
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{
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if (m_debugSphere != null)
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{
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Destroy(m_debugSphere);
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}
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m_debugSphere = GameObject.CreatePrimitive(PrimitiveType.Sphere);
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Destroy(m_debugSphere.GetComponent<Collider>());
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m_debugSphere.transform.position = m_dofTrackingPoint;
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m_debugSphere.transform.localScale = new Vector3(0.5f, 0.5f, 0.5f);
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}
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}
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#if UNITY_POST_PROCESSING_STACK_V2
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if (m_trackingType != GaiaConstants.DOFTrackingType.FixedOffset)
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{
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SetNewDOFValue(m_dof.focusDistance.value);
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}
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m_actualFocusDistance = m_dof.focusDistance.value;
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#endif
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if (GaiaUtils.CheckIfSceneProfileExists())
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{
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GaiaGlobal.Instance.SceneProfile.m_depthOfFieldFocusDistance = m_actualFocusDistance;
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}
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}
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private void FocusOnRayCast(Ray ray)
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{
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if (Physics.Raycast(ray, out var hit, m_maxFocusDistance, m_targetLayer))
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{
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if (m_debug)
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{
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Debug.Log("Auto DOF Ray collided with: " + hit.collider.name);
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}
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if (m_interactWithPlayer)
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{
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if (hit.transform.gameObject.tag != "Player")
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{
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m_maxDistanceExceeded = false;
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m_dofTrackingPoint = hit.point;
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}
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else
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{
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m_maxDistanceExceeded = true;
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}
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}
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else
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{
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m_maxDistanceExceeded = false;
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m_dofTrackingPoint = hit.point;
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}
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}
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else
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{
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m_maxDistanceExceeded = true;
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}
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}
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public void RemoveDebugSphere()
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{
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if (m_debugSphere != null)
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{
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DestroyImmediate(m_debugSphere);
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}
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}
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private void SetNewDOFValue(float startValue, float timeMultiplier = 3.5f)
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{
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if (m_sourceCamera == null)
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{
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return;
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}
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#if UNITY_POST_PROCESSING_STACK_V2
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if (m_dof == null)
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{
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GetDepthOfFieldComponent();
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}
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else
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{
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if (m_maxDistanceExceeded)
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{
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m_dof.focusDistance.value = m_maxFocusDistance;
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}
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else
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{
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m_dof.focusDistance.value = Mathf.Lerp(startValue, Vector3.Distance(m_sourceCamera.transform.position ,m_dofTrackingPoint) + m_focusOffset, Time.deltaTime * timeMultiplier);
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}
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}
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#endif
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}
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/// <summary>
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/// Setup autofocus object
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/// </summary>
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public void SetupAutoFocus()
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{
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m_renderPipeLine = GaiaUtils.GetActivePipeline();
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if (m_dofTrackingPoint.x > 0)
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{
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//Removes warning
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}
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if (m_maxDistanceExceeded)
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{
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//Removes warning
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}
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//Set up main camera
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if (m_sourceCamera == null)
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{
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m_sourceCamera = GaiaUtils.GetCamera();
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if (m_sourceCamera == null)
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{
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Debug.Log("DOF Autofocus exiting, unable to find main camera!");
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enabled = false;
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return;
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}
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}
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//Determine tracking type
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if (m_trackingType == GaiaConstants.DOFTrackingType.FollowTarget && m_targetObject == null)
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{
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Debug.Log("Tracking target is missing, falling back to follow screen!");
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m_trackingType = GaiaConstants.DOFTrackingType.FollowScreen;
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}
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#if UNITY_POST_PROCESSING_STACK_V2
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//Gets DOF component
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if (m_dof == null)
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{
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GetDepthOfFieldComponent();
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}
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if (m_dof != null)
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{
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m_dof.focusDistance.value = m_maxFocusDistance;
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}
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#endif
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}
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private void GetDepthOfFieldComponent()
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{
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if (m_renderPipeLine != GaiaConstants.EnvironmentRenderer.BuiltIn)
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{
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return;
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}
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#if UNITY_POST_PROCESSING_STACK_V2
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//Find our DOF component
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if (m_dof == null)
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{
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GameObject ppObj = GameObject.Find("Global Post Processing");
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if (ppObj == null)
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{
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Debug.Log("DOF Autofocus exiting, unable to global post processing object!");
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enabled = false;
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return;
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}
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PostProcessVolume ppVolume = ppObj.GetComponent<PostProcessVolume>();
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{
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if (ppVolume == null)
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{
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Debug.Log("DOF Autofocus exiting, unable to global post processing volume!");
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enabled = false;
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return;
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}
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}
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PostProcessProfile ppProfile = ppVolume.sharedProfile;
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if (ppProfile == null)
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{
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Debug.Log("DOF Autofocus exiting, unable to global post processing profile!");
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enabled = false;
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return;
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}
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if (!ppProfile.HasSettings<UnityEngine.Rendering.PostProcessing.DepthOfField>())
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{
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Debug.Log("DOF Autofocus exiting, unable to find dof settings!");
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enabled = false;
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return;
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}
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if (!ppProfile.TryGetSettings<UnityEngine.Rendering.PostProcessing.DepthOfField>(out m_dof))
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{
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Debug.Log("DOF Autofocus exiting, unable to find dof settings!");
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m_dof = null;
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enabled = false;
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}
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}
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if (m_dof != null)
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{
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m_dof.active = true;
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m_dof.enabled.value = true;
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m_dof.focusDistance.overrideState = true;
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m_maxDistanceExceeded = true;
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}
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#endif
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}
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/// <summary>
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/// Sets the focus distance on the DOF component based on camera distance divided by 4
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/// </summary>
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/// <param name="enabled"></param>
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public void SetDOFStatus(bool enabled)
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{
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if (!enabled)
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{
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#if UNITY_POST_PROCESSING_STACK_V2
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if (m_dof != null && m_sourceCamera != null)
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{
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m_dof.focusDistance.value = m_sourceCamera.farClipPlane / 4f;
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}
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#endif
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}
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}
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/// <summary>
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/// Grabs the DOF aperture and focal length and updates the systems values to use these
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/// </summary>
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public void GetCurrentDepthOfFieldSettings()
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{
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#if UNITY_POST_PROCESSING_STACK_V2
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if (m_dof != null)
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{
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m_dofAperture = m_dof.aperture.value;
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m_dofFocalLength = m_dof.focalLength.value;
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}
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#endif
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}
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/// <summary>
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/// Sets the depth of field focus distance to 100 if it's less than 20
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/// This should remove a blury game view when not in play mode
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/// </summary>
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private void SetEditorDepthOfFieldSettings()
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{
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#if UNITY_POST_PROCESSING_STACK_V2
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if (m_dof == null)
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{
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return;
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}
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if (m_dof.focusDistance.value < 20f)
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{
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m_dof.focusDistance.value = 100f;
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}
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#endif
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}
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#endregion
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}
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}
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