// update absolute camera
internal static void UpdateAbsoluteCamera(double TimeElapsed)
{
// zoom
double zm = Program.Renderer.Camera.Alignment.Zoom;
Program.Renderer.Camera.AdjustAlignment(ref Program.Renderer.Camera.Alignment.Zoom, Program.Renderer.Camera.AlignmentDirection.Zoom, ref Program.Renderer.Camera.AlignmentSpeed.Zoom, TimeElapsed, true, TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].CameraRestriction);
if (zm != Program.Renderer.Camera.Alignment.Zoom)
{
Program.Renderer.Camera.ApplyZoom();
}
if (Program.Renderer.Camera.CurrentMode == CameraViewMode.FlyBy | Program.Renderer.Camera.CurrentMode == CameraViewMode.FlyByZooming)
{
// fly-by
Program.Renderer.Camera.AdjustAlignment(ref Program.Renderer.Camera.Alignment.Position.X, Program.Renderer.Camera.AlignmentDirection.Position.X, ref Program.Renderer.Camera.AlignmentSpeed.Position.X, TimeElapsed, false, TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].CameraRestriction);
Program.Renderer.Camera.AdjustAlignment(ref Program.Renderer.Camera.Alignment.Position.Y, Program.Renderer.Camera.AlignmentDirection.Position.Y, ref Program.Renderer.Camera.AlignmentSpeed.Position.Y, TimeElapsed, false, TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].CameraRestriction);
double tr = Program.Renderer.Camera.Alignment.TrackPosition;
Program.Renderer.Camera.AdjustAlignment(ref Program.Renderer.Camera.Alignment.TrackPosition, Program.Renderer.Camera.AlignmentDirection.TrackPosition, ref Program.Renderer.Camera.AlignmentSpeed.TrackPosition, TimeElapsed, false, TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].CameraRestriction);
if (tr != Program.Renderer.Camera.Alignment.TrackPosition)
{
Program.Renderer.CameraTrackFollower.UpdateAbsolute(Program.Renderer.Camera.Alignment.TrackPosition, true, false);
Program.Renderer.UpdateViewingDistances(Program.CurrentRoute.CurrentBackground.BackgroundImageDistance);
}
// position to focus on
Vector3 focusPosition = Vector3.Zero;
double zoomMultiplier;
{
const double heightFactor = 0.75;
TrainBase bestTrain = null;
double bestDistanceSquared = double.MaxValue;
TrainBase secondBestTrain = null;
double secondBestDistanceSquared = double.MaxValue;
foreach (TrainBase train in Program.TrainManager.Trains)
{
if (train.State == TrainState.Available)
{
double x = 0.5 * (train.Cars[0].FrontAxle.Follower.WorldPosition.X + train.Cars[0].RearAxle.Follower.WorldPosition.X);
double y = 0.5 * (train.Cars[0].FrontAxle.Follower.WorldPosition.Y + train.Cars[0].RearAxle.Follower.WorldPosition.Y) + heightFactor * train.Cars[0].Height;
double z = 0.5 * (train.Cars[0].FrontAxle.Follower.WorldPosition.Z + train.Cars[0].RearAxle.Follower.WorldPosition.Z);
double dx = x - Program.Renderer.CameraTrackFollower.WorldPosition.X;
double dy = y - Program.Renderer.CameraTrackFollower.WorldPosition.Y;
double dz = z - Program.Renderer.CameraTrackFollower.WorldPosition.Z;
double d = dx * dx + dy * dy + dz * dz;
if (d < bestDistanceSquared)
{
secondBestTrain = bestTrain;
secondBestDistanceSquared = bestDistanceSquared;
bestTrain = train;
bestDistanceSquared = d;
}
else if (d < secondBestDistanceSquared)
{
secondBestTrain = train;
secondBestDistanceSquared = d;
}
}
}
if (bestTrain != null)
{
const double maxDistance = 100.0;
double bestDistance = Math.Sqrt(bestDistanceSquared);
double secondBestDistance = Math.Sqrt(secondBestDistanceSquared);
if (secondBestTrain != null && secondBestDistance - bestDistance <= maxDistance)
{
double x1 = 0.5 * (bestTrain.Cars[0].FrontAxle.Follower.WorldPosition.X + bestTrain.Cars[0].RearAxle.Follower.WorldPosition.X);
double y1 = 0.5 * (bestTrain.Cars[0].FrontAxle.Follower.WorldPosition.Y + bestTrain.Cars[0].RearAxle.Follower.WorldPosition.Y) + heightFactor * bestTrain.Cars[0].Height;
double z1 = 0.5 * (bestTrain.Cars[0].FrontAxle.Follower.WorldPosition.Z + bestTrain.Cars[0].RearAxle.Follower.WorldPosition.Z);
double x2 = 0.5 * (secondBestTrain.Cars[0].FrontAxle.Follower.WorldPosition.X + secondBestTrain.Cars[0].RearAxle.Follower.WorldPosition.X);
double y2 = 0.5 * (secondBestTrain.Cars[0].FrontAxle.Follower.WorldPosition.Y + secondBestTrain.Cars[0].RearAxle.Follower.WorldPosition.Y) + heightFactor * secondBestTrain.Cars[0].Height;
double z2 = 0.5 * (secondBestTrain.Cars[0].FrontAxle.Follower.WorldPosition.Z + secondBestTrain.Cars[0].RearAxle.Follower.WorldPosition.Z);
double t = 0.5 - (secondBestDistance - bestDistance) / (2.0 * maxDistance);
if (t < 0.0)
{
t = 0.0;
}
t = 2.0 * t * t; /* in order to change the shape of the interpolation curve */
focusPosition.X = (1.0 - t) * x1 + t * x2;
focusPosition.Y = (1.0 - t) * y1 + t * y2;
focusPosition.Z = (1.0 - t) * z1 + t * z2;
zoomMultiplier = 1.0 - 2.0 * t;
}
else
{
focusPosition.X = 0.5 * (bestTrain.Cars[0].FrontAxle.Follower.WorldPosition.X + bestTrain.Cars[0].RearAxle.Follower.WorldPosition.X);
focusPosition.Y = 0.5 * (bestTrain.Cars[0].FrontAxle.Follower.WorldPosition.Y + bestTrain.Cars[0].RearAxle.Follower.WorldPosition.Y) + heightFactor * bestTrain.Cars[0].Height;
focusPosition.Z = 0.5 * (bestTrain.Cars[0].FrontAxle.Follower.WorldPosition.Z + bestTrain.Cars[0].RearAxle.Follower.WorldPosition.Z);
zoomMultiplier = 1.0;
}
}
else
{
zoomMultiplier = 1.0;
}
}
// camera
{
Program.Renderer.Camera.AbsoluteDirection = new Vector3(Program.Renderer.CameraTrackFollower.WorldDirection);
Program.Renderer.Camera.AbsolutePosition = Program.Renderer.CameraTrackFollower.WorldPosition + Program.Renderer.CameraTrackFollower.WorldSide * Program.Renderer.Camera.Alignment.Position.X + Program.Renderer.CameraTrackFollower.WorldUp * Program.Renderer.Camera.Alignment.Position.Y + Program.Renderer.Camera.AbsoluteDirection * Program.Renderer.Camera.Alignment.Position.Z;
Program.Renderer.Camera.AbsoluteDirection = focusPosition - Program.Renderer.Camera.AbsolutePosition;
double t = Program.Renderer.Camera.AbsoluteDirection.Norm();
double ti = 1.0 / t;
Program.Renderer.Camera.AbsoluteDirection *= ti;
Program.Renderer.Camera.AbsoluteSide = new Vector3(Program.Renderer.Camera.AbsoluteDirection.Z, 0.0, -Program.Renderer.Camera.AbsoluteDirection.X);
Program.Renderer.Camera.AbsoluteSide.Normalize();
Program.Renderer.Camera.AbsoluteUp = Vector3.Cross(Program.Renderer.Camera.AbsoluteDirection, Program.Renderer.Camera.AbsoluteSide);
Program.Renderer.UpdateViewingDistances(Program.CurrentRoute.CurrentBackground.BackgroundImageDistance);
if (Program.Renderer.Camera.CurrentMode == CameraViewMode.FlyByZooming)
{
// zoom
const double fadeOutDistance = 600.0; /* the distance with the highest zoom factor is half the fade-out distance */
const double maxZoomFactor = 7.0; /* the zoom factor at half the fade-out distance */
const double factor = 256.0 / (fadeOutDistance * fadeOutDistance * fadeOutDistance * fadeOutDistance * fadeOutDistance * fadeOutDistance * fadeOutDistance * fadeOutDistance);
double zoom;
if (t < fadeOutDistance)
{
double tdist4 = fadeOutDistance - t; tdist4 *= tdist4; tdist4 *= tdist4;
double t4 = t * t; t4 *= t4;
zoom = 1.0 + factor * zoomMultiplier * (maxZoomFactor - 1.0) * tdist4 * t4;
}
else
{
zoom = 1.0;
}
Program.Renderer.Camera.VerticalViewingAngle = Program.Renderer.Camera.OriginalVerticalViewingAngle / zoom;
Program.Renderer.UpdateViewport(ViewportChangeMode.NoChange);
}
}
}
else
{
// non-fly-by
{
// current alignment
Program.Renderer.Camera.AdjustAlignment(ref Program.Renderer.Camera.Alignment.Position.X, Program.Renderer.Camera.AlignmentDirection.Position.X, ref Program.Renderer.Camera.AlignmentSpeed.Position.X, TimeElapsed, false, TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].CameraRestriction);
Program.Renderer.Camera.AdjustAlignment(ref Program.Renderer.Camera.Alignment.Position.Y, Program.Renderer.Camera.AlignmentDirection.Position.Y, ref Program.Renderer.Camera.AlignmentSpeed.Position.Y, TimeElapsed, false, TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].CameraRestriction);
Program.Renderer.Camera.AdjustAlignment(ref Program.Renderer.Camera.Alignment.Position.Z, Program.Renderer.Camera.AlignmentDirection.Position.Z, ref Program.Renderer.Camera.AlignmentSpeed.Position.Z, TimeElapsed, false, TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].CameraRestriction);
if ((Program.Renderer.Camera.CurrentMode == CameraViewMode.Interior | Program.Renderer.Camera.CurrentMode == CameraViewMode.InteriorLookAhead) & Program.Renderer.Camera.CurrentRestriction == CameraRestrictionMode.On)
{
if (Program.Renderer.Camera.Alignment.Position.Z > 0.75)
{
Program.Renderer.Camera.Alignment.Position.Z = 0.75;
}
}
bool q = Program.Renderer.Camera.AlignmentSpeed.Yaw != 0.0 | Program.Renderer.Camera.AlignmentSpeed.Pitch != 0.0 | Program.Renderer.Camera.AlignmentSpeed.Roll != 0.0;
Program.Renderer.Camera.AdjustAlignment(ref Program.Renderer.Camera.Alignment.Yaw, Program.Renderer.Camera.AlignmentDirection.Yaw, ref Program.Renderer.Camera.AlignmentSpeed.Yaw, TimeElapsed, false, TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].CameraRestriction);
Program.Renderer.Camera.AdjustAlignment(ref Program.Renderer.Camera.Alignment.Pitch, Program.Renderer.Camera.AlignmentDirection.Pitch, ref Program.Renderer.Camera.AlignmentSpeed.Pitch, TimeElapsed, false, TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].CameraRestriction);
Program.Renderer.Camera.AdjustAlignment(ref Program.Renderer.Camera.Alignment.Roll, Program.Renderer.Camera.AlignmentDirection.Roll, ref Program.Renderer.Camera.AlignmentSpeed.Roll, TimeElapsed, false, TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].CameraRestriction);
double tr = Program.Renderer.Camera.Alignment.TrackPosition;
Program.Renderer.Camera.AdjustAlignment(ref Program.Renderer.Camera.Alignment.TrackPosition, Program.Renderer.Camera.AlignmentDirection.TrackPosition, ref Program.Renderer.Camera.AlignmentSpeed.TrackPosition, TimeElapsed, false, TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].CameraRestriction);
if (tr != Program.Renderer.Camera.Alignment.TrackPosition)
{
Program.Renderer.CameraTrackFollower.UpdateAbsolute(Program.Renderer.Camera.Alignment.TrackPosition, true, false);
q = true;
}
if (q)
{
Program.Renderer.UpdateViewingDistances(Program.CurrentRoute.CurrentBackground.BackgroundImageDistance);
}
}
// camera
Vector3 cF = new Vector3(Program.Renderer.CameraTrackFollower.WorldPosition);
Vector3 dF = new Vector3(Program.Renderer.CameraTrackFollower.WorldDirection);
Vector3 uF = new Vector3(Program.Renderer.CameraTrackFollower.WorldUp);
Vector3 sF = new Vector3(Program.Renderer.CameraTrackFollower.WorldSide);
double lookaheadYaw;
double lookaheadPitch;
if (Program.Renderer.Camera.CurrentMode == CameraViewMode.InteriorLookAhead)
{
// look-ahead
double d = 20.0;
if (TrainManager.PlayerTrain.CurrentSpeed > 0.0)
{
d += 3.0 * (Math.Sqrt(TrainManager.PlayerTrain.CurrentSpeed * TrainManager.PlayerTrain.CurrentSpeed + 1.0) - 1.0);
}
d -= TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].FrontAxle.Position;
TrackFollower f = TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].FrontAxle.Follower.Clone();
f.TriggerType = EventTriggerType.None;
f.UpdateRelative(d, true, false);
Vector3 r = new Vector3(f.WorldPosition - cF + Program.Renderer.CameraTrackFollower.WorldSide * TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].Driver.X + Program.Renderer.CameraTrackFollower.WorldUp * TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].Driver.Y + Program.Renderer.CameraTrackFollower.WorldDirection * TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].Driver.Z);
r.Normalize();
double t = dF.Z * (sF.Y * uF.X - sF.X * uF.Y) + dF.Y * (-sF.Z * uF.X + sF.X * uF.Z) + dF.X * (sF.Z * uF.Y - sF.Y * uF.Z);
if (t != 0.0)
{
t = 1.0 / t;
double tx = (r.Z * (-dF.Y * uF.X + dF.X * uF.Y) + r.Y * (dF.Z * uF.X - dF.X * uF.Z) + r.X * (-dF.Z * uF.Y + dF.Y * uF.Z)) * t;
double ty = (r.Z * (dF.Y * sF.X - dF.X * sF.Y) + r.Y * (-dF.Z * sF.X + dF.X * sF.Z) + r.X * (dF.Z * sF.Y - dF.Y * sF.Z)) * t;
double tz = (r.Z * (sF.Y * uF.X - sF.X * uF.Y) + r.Y * (-sF.Z * uF.X + sF.X * uF.Z) + r.X * (sF.Z * uF.Y - sF.Y * uF.Z)) * t;
lookaheadYaw = tx * tz != 0.0 ? Math.Atan2(tx, tz) : 0.0;
if (ty < -1.0)
{
lookaheadPitch = -0.5 * Math.PI;
}
else if (ty > 1.0)
{
lookaheadPitch = 0.5 * Math.PI;
}
else
{
lookaheadPitch = Math.Asin(ty);
}
}
else
{
lookaheadYaw = 0.0;
lookaheadPitch = 0.0;
}
}
else
{
lookaheadYaw = 0.0;
lookaheadPitch = 0.0;
}
{
// cab pitch and yaw
Vector3 d2 = new Vector3(dF);
Vector3 u2 = new Vector3(uF);
if ((Program.Renderer.Camera.CurrentMode == CameraViewMode.Interior | Program.Renderer.Camera.CurrentMode == CameraViewMode.InteriorLookAhead) & TrainManager.PlayerTrain != null)
{
int c = TrainManager.PlayerTrain.DriverCar;
if (c >= 0)
{
if (TrainManager.PlayerTrain.Cars[c].CarSections.Length == 0 || TrainManager.PlayerTrain.Cars[c].CarSections[0].Groups[0].Type != ObjectType.Overlay)
{
d2.Rotate(sF, -TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].DriverPitch);
u2.Rotate(sF, -TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].DriverPitch);
}
}
}
cF += sF * Program.Renderer.Camera.Alignment.Position.X + u2 * Program.Renderer.Camera.Alignment.Position + d2 * Program.Renderer.Camera.Alignment.Position.Z;
}
// yaw, pitch, roll
double headYaw = Program.Renderer.Camera.Alignment.Yaw + lookaheadYaw;
if ((Program.Renderer.Camera.CurrentMode == CameraViewMode.Interior | Program.Renderer.Camera.CurrentMode == CameraViewMode.InteriorLookAhead) & TrainManager.PlayerTrain != null)
{
if (TrainManager.PlayerTrain.DriverCar >= 0)
{
headYaw += TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].DriverYaw;
}
}
double headPitch = Program.Renderer.Camera.Alignment.Pitch + lookaheadPitch;
if ((Program.Renderer.Camera.CurrentMode == CameraViewMode.Interior | Program.Renderer.Camera.CurrentMode == CameraViewMode.InteriorLookAhead) & TrainManager.PlayerTrain != null)
{
if (TrainManager.PlayerTrain.DriverCar >= 0)
{
headPitch += TrainManager.PlayerTrain.Cars[TrainManager.PlayerTrain.DriverCar].DriverPitch;
}
}
double bodyPitch = 0.0;
double bodyRoll = 0.0;
double headRoll = Program.Renderer.Camera.Alignment.Roll;
// rotation
if ((Program.Renderer.Camera.CurrentRestriction == CameraRestrictionMode.NotAvailable || Program.Renderer.Camera.CurrentRestriction == CameraRestrictionMode.Restricted3D) & (Program.Renderer.Camera.CurrentMode == CameraViewMode.Interior | Program.Renderer.Camera.CurrentMode == CameraViewMode.InteriorLookAhead))
{
// with body and head
bodyPitch += TrainManager.PlayerTrain.DriverBody.Pitch;
headPitch -= 0.2 * TrainManager.PlayerTrain.DriverBody.Pitch;
bodyRoll += TrainManager.PlayerTrain.DriverBody.Roll;
headRoll += 0.2 * TrainManager.PlayerTrain.DriverBody.Roll;
const double bodyHeight = 0.6;
const double headHeight = 0.1;
{
// body pitch
double ry = (Math.Cos(-bodyPitch) - 1.0) * bodyHeight;
double rz = Math.Sin(-bodyPitch) * bodyHeight;
cF += dF * rz + uF * ry;
if (bodyPitch != 0.0)
{
dF.Rotate(sF, -bodyPitch);
uF.Rotate(sF, -bodyPitch);
}
}
{
// body roll
double rx = Math.Sin(bodyRoll) * bodyHeight;
double ry = (Math.Cos(bodyRoll) - 1.0) * bodyHeight;
cF += sF * rx + uF * ry;
if (bodyRoll != 0.0)
{
uF.Rotate(dF, -bodyRoll);
sF.Rotate(dF, -bodyRoll);
}
}
{
// head yaw
double rx = Math.Sin(headYaw) * headHeight;
double rz = (Math.Cos(headYaw) - 1.0) * headHeight;
cF += sF * rx + dF * rz;
if (headYaw != 0.0)
{
dF.Rotate(uF, headYaw);
sF.Rotate(uF, headYaw);
}
}
{
// head pitch
double ry = (Math.Cos(-headPitch) - 1.0) * headHeight;
double rz = Math.Sin(-headPitch) * headHeight;
cF += dF * rz + uF * ry;
if (headPitch != 0.0)
{
dF.Rotate(sF, -headPitch);
uF.Rotate(sF, -headPitch);
}
}
{
// head roll
double rx = Math.Sin(headRoll) * headHeight;
double ry = (Math.Cos(headRoll) - 1.0) * headHeight;
cF += sF * rx + uF * ry;
if (headRoll != 0.0)
{
uF.Rotate(dF, -headRoll);
sF.Rotate(dF, -headRoll);
}
}
}
else
{
// without body or head
double totalYaw = headYaw;
double totalPitch = headPitch + bodyPitch;
double totalRoll = bodyRoll + headRoll;
if (totalYaw != 0.0)
{
dF.Rotate(uF, totalYaw);
sF.Rotate(uF, totalYaw);
}
if (totalPitch != 0.0)
{
dF.Rotate(sF, -totalPitch);
uF.Rotate(sF, -totalPitch);
}
if (totalRoll != 0.0)
{
uF.Rotate(dF, -totalRoll);
sF.Rotate(dF, -totalRoll);
}
}
// finish
Program.Renderer.Camera.AbsolutePosition = cF;
Program.Renderer.Camera.AbsoluteDirection = dF;
Program.Renderer.Camera.AbsoluteUp = uF;
Program.Renderer.Camera.AbsoluteSide = sF;
}
}
