/// Autofocus on target
public static void Autofocus(Camera cam, Transform target, bool useColliderDistance = true)
{
#if HAZE_POSTPROCESSING
if (cam == null)
{
cam = Camera.main;
}
if (target == null)
{
Debug.LogWarning("Cannot focus on anything; target is null.");
return;
}
Collider targetColl = null;
if (useColliderDistance)
{
targetColl = target.GetComponent <Collider>();
}
float currentDistance = distanceToTarget(cam.transform, target, targetColl);
//set depth of field focus distance if we have post processing stack
PostProcessingBridge.SetDepthOfField_FocusDistance(currentDistance, cam);
#endif
}
/// Alternatively use this from a MonoBehaviour as: StartCoroutine(DollyZoom.play(Camera.main, ...));
/// Or within another IEnumerator: yield return DollyZoom.play(Camera.main, ...);
public static IEnumerator play(Camera cam, Transform target, float distance, Easing easing = null, float time = 1, bool useColliderDistance = false, bool useFixedDeltaTime = false, bool modifyDepthOfField = false, bool lookAt = false, UnityEvent onEnd = null)
{
if (easing == null)
{
easing = Easing.Linear;
}
if (cam == null)
{
cam = Camera.main;
}
// checks
if (!target)
{
Debug.LogWarning("Cannot execute dolly zoom; target is null.");
yield break;
}
// cache
Transform camT = cam.transform;
float oneOverTime = 1.0f / time;
Vector3 initialPosition = camT.position;
Collider targetColl = null;
if (useColliderDistance)
{
targetColl = target.GetComponent <Collider>();
}
float initialDistance = distanceToTarget(camT, target, targetColl);
float initialHeight = frustumHeight(initialDistance, cam.fieldOfView);
for (float elapsed = 0; elapsed < time; elapsed += (useFixedDeltaTime ? Time.fixedDeltaTime : Time.deltaTime))
{
easing.T = elapsed * oneOverTime;
//move camera in/out
float distanceMoved = distance * easing.T;
camT.position = camT.forward * distanceMoved + initialPosition;
//get current distance to target
float currentDistance = distanceToTarget(camT, target, targetColl);
//modify fov
cam.fieldOfView = fov(initialHeight, currentDistance);
//set depth of field focus distance if we have post processing stack
if (modifyDepthOfField)
{
PostProcessingBridge.SetDepthOfField_FocusDistance(currentDistance, cam);
}
if (lookAt)
{
LookAt.Look(cam, target, 0, false, false);
}
yield return(null);
}
if (onEnd != null)
{
onEnd.Invoke();
}
}
/// Or, if you want to keep the effect while moving the camera yourself from somewhere else
/// Use as StartCoroutine(DollyZoom.playNoMovement(Camera.main, ...);
/// (Don't yield return DollyZoom.playNoMovement(Camera.main, ...) as you will not be able to stop it).
public static IEnumerator playNoMovement(Camera cam, Transform target, bool useColliderDistance = false, bool modifyDepthOfField = false, bool lookAt = false)
{
if (cam == null)
{
cam = Camera.main;
}
//checks
if (!target)
{
Debug.LogWarning("Cannot execute dolly zoom; target is null.");
yield break;
}
// cache
Transform camT = cam.transform;
Collider targetColl = null;
if (useColliderDistance)
{
targetColl = target.GetComponent <Collider>();
}
//get initial distance to target
float initialDistance = distanceToTarget(camT, target, targetColl);
float initialHeight = frustumHeight(initialDistance, cam.fieldOfView);
while (true)
{
//get current distance to target
float currentDistance = distanceToTarget(camT, target, targetColl);
//modify fov
cam.fieldOfView = fov(initialHeight, currentDistance);
//set depth of field focus distance if we have post processing stack
if (modifyDepthOfField)
{
PostProcessingBridge.SetDepthOfField_FocusDistance(currentDistance, cam);
}
if (lookAt)
{
LookAt.Look(cam, target, 0, false, false);
}
yield return(null);
}
}