public void Execute(CameraRotatingComponent component)
{
var state = component.State;
var data = component.MovementData;
//Utilities.Helix.CameraMath.RotateTrackball(Utilities.Helix.CameraMode.Inspect,
// ref p11, ref p2, ref rotp, 1f, 960, 540, ccom, 1, out var newpos, out var newlook, out var newup);
//Utilities.Helix.CameraMath.RotateTurnball(Utilities.Helix.CameraMode.Inspect,
// ref p11, ref p2, ref rotp, 1f, 960, 540, ccom, 1, out var newpos, out var newlook, out var newup);
//Utilities.Helix.CameraMath.RotateTurntable(Utilities.Helix.CameraMode.Inspect,
// ref moveV, ref rotp, 1f, 960, 540, new , 1, UpDirection.Value, out var newpos, out var newlook, out var newup);
var rotateAround = camera.RotatePoint;
var delta = data.End - data.Begin;
var relativeTarget = rotateAround - state.Target;
var relativePosition = rotateAround - state.Position;
var cUp = Vector3.Normalize(state.UpDirection);
var up = state.UpDirection;
var dir = Vector3.Normalize(state.LookDirection);
var right = Vector3.Cross(dir, cUp);
float d = -0.5f;
d *= 1;
var xangle = d * 1 * delta.X / 180 * (float)Math.PI;
var yangle = d * delta.Y / 180 * (float)Math.PI;
//System.Diagnostics.Trace.WriteLine($"up: {up}/{xangle}, right: {right}/{yangle}");
var q1 = Quaternion.CreateFromAxisAngle(up, xangle);
var q2 = Quaternion.CreateFromAxisAngle(right, yangle);
Quaternion q = q1 * q2;
var m = Matrix4x4.CreateFromQuaternion(q);
var newRelativeTarget = Vector3.Transform(relativeTarget, m);
var newRelativePosition = Vector3.Transform(relativePosition, m);
var newTarget = rotateAround - newRelativeTarget;
var newPosition = rotateAround - newRelativePosition;
camera.UpDirection = Vector3.TransformNormal(cUp, m);
camera.LookDirection = (newTarget - newPosition);
camera.Position = newPosition;
}
public void Handle(CameraRotatingComponent component)
{
var rotate = new RotationHandler(camera);
rotate.Execute(component);
}
