float AdjustCameraDepthAndLensForGroupFraming(
CinemachineTargetGroup group, float targetZ,
ref CameraState curState, float deltaTime)
{
float cameraOffset = 0;
// Get the bounding box from that POV in view space, and find its height
Bounds bounds = group.BoundingBox;
Vector3 fwd = curState.RawOrientation * Vector3.forward;
m_lastBoundsMatrix = Matrix4x4.TRS(
bounds.center - (fwd * bounds.extents.magnitude),
curState.RawOrientation, Vector3.one);
m_LastBounds = group.GetViewSpaceBoundingBox(m_lastBoundsMatrix);
float targetHeight = GetTargetHeight(m_LastBounds);
// Apply damping
if (deltaTime >= 0)
{
float delta = targetHeight - m_prevTargetHeight;
delta = Damper.Damp(delta, m_ZDamping, deltaTime);
targetHeight = m_prevTargetHeight + delta;
}
m_prevTargetHeight = targetHeight;
// Move the camera
if (!curState.Lens.Orthographic && m_AdjustmentMode != AdjustmentMode.ZoomOnly)
{
// What distance would be needed to get the target height, at the current FOV
float desiredDistance
= targetHeight / (2f * Mathf.Tan(curState.Lens.FieldOfView * Mathf.Deg2Rad / 2f));
// target the near surface of the bounding box
desiredDistance += m_LastBounds.extents.z;
// Clamp to respect min/max distance settings
desiredDistance = Mathf.Clamp(
desiredDistance, targetZ - m_MaxDollyIn, targetZ + m_MaxDollyOut);
desiredDistance = Mathf.Clamp(desiredDistance, m_MinimumDistance, m_MaximumDistance);
// Apply
cameraOffset += desiredDistance - targetZ;
}
// Apply zoom
if (curState.Lens.Orthographic || m_AdjustmentMode != AdjustmentMode.DollyOnly)
{
float nearBoundsDistance = (targetZ + cameraOffset) - m_LastBounds.extents.z;
float currentFOV = 179;
if (nearBoundsDistance > Epsilon)
{
currentFOV = 2f * Mathf.Atan(targetHeight / (2 * nearBoundsDistance)) * Mathf.Rad2Deg;
}
LensSettings lens = curState.Lens;
lens.FieldOfView = Mathf.Clamp(currentFOV, m_MinimumFOV, m_MaximumFOV);
lens.OrthographicSize = Mathf.Clamp(targetHeight / 2, m_MinimumOrthoSize, m_MaximumOrthoSize);
curState.Lens = lens;
}
return(-cameraOffset);
}
/// <summary>Applies the composer rules and orients the camera accordingly</summary>
/// <param name="state">The current camera state</param>
/// <param name="deltaTime">Used for calculating damping. If less than
/// zero, then target will snap to the center of the dead zone.</param>
public override void MutateCameraState(ref CameraState curState, float deltaTime)
{
// Can't do anything without a group to look at
CinemachineTargetGroup group = TargetGroup;
if (group == null)
{
base.MutateCameraState(ref curState, deltaTime);
return;
}
if (!IsValid || !curState.HasLookAt)
{
m_prevTargetHeight = 0;
return;
}
curState.ReferenceLookAt = GetLookAtPointAndSetTrackedPoint(group.transform.position);
Vector3 currentOffset = TrackedPoint - curState.RawPosition;
float currentDistance = currentOffset.magnitude;
if (currentDistance < Epsilon)
{
return; // navel-gazing, get outa here
}
//UnityEngine.Profiling.Profiler.BeginSample("CinemachineGroupComposer.MutateCameraState");
// Get the camera axis
Vector3 fwd = currentOffset.AlmostZero() ? Vector3.forward : currentOffset.normalized;
// Get the bounding box from that POV in view space, and find its width
Bounds bounds = group.BoundingBox;
m_lastBoundsMatrix = Matrix4x4.TRS(
bounds.center - (fwd * bounds.extents.magnitude),
Quaternion.LookRotation(fwd, curState.ReferenceUp), Vector3.one);
m_LastBounds = group.GetViewSpaceBoundingBox(m_lastBoundsMatrix);
float targetHeight = GetTargetHeight(m_LastBounds);
Vector3 targetPos = m_lastBoundsMatrix.MultiplyPoint3x4(m_LastBounds.center);
// Apply damping
if (deltaTime >= 0)
{
float delta = targetHeight - m_prevTargetHeight;
delta = Damper.Damp(delta, m_FrameDamping, deltaTime);
targetHeight = m_prevTargetHeight + delta;
}
m_prevTargetHeight = targetHeight;
// Move the camera
if (!curState.Lens.Orthographic && m_AdjustmentMode != AdjustmentMode.ZoomOnly)
{
// What distance would be needed to get the target height, at the current FOV
float currentFOV = curState.Lens.FieldOfView;
float targetDistance = targetHeight / (2f * Mathf.Tan(currentFOV * Mathf.Deg2Rad / 2f));
// target the near surface of the bounding box
float cameraDistance = targetDistance + m_LastBounds.extents.z;
// Clamp to respect min/max distance settings
cameraDistance = Mathf.Clamp(
cameraDistance, currentDistance - m_MaxDollyIn, currentDistance + m_MaxDollyOut);
cameraDistance = Mathf.Clamp(cameraDistance, m_MinimumDistance, m_MaximumDistance);
// Apply
curState.PositionCorrection += targetPos - fwd * cameraDistance - curState.RawPosition;
}
// Apply zoom
if (curState.Lens.Orthographic || m_AdjustmentMode != AdjustmentMode.DollyOnly)
{
float nearBoundsDistance = (TrackedPoint - curState.CorrectedPosition).magnitude
- m_LastBounds.extents.z;
float currentFOV = 179;
if (nearBoundsDistance > Epsilon)
{
currentFOV = 2f * Mathf.Atan(targetHeight / (2 * nearBoundsDistance)) * Mathf.Rad2Deg;
}
LensSettings lens = curState.Lens;
lens.FieldOfView = Mathf.Clamp(currentFOV, m_MinimumFOV, m_MaximumFOV);
lens.OrthographicSize = Mathf.Clamp(targetHeight / 2, m_MinimumOrthoSize, m_MaximumOrthoSize);
curState.Lens = lens;
}
// Now compose normally
base.MutateCameraState(ref curState, deltaTime);
//UnityEngine.Profiling.Profiler.EndSample();
}
