void HandleBeginDrag(VrEventArgs args)
{
_frameGfx.Visible = false;
var hitInstruction = args.HitResult as HitResult <RsMoveInstruction>;
var hitSegment = args.HitResult as HitResult <PathSegment>;
if (hitInstruction != null)
{
_dragOffset = args.Frame.InverseRigid() * hitInstruction.HitObject.GetToTarget().Transform.GlobalMatrix;
WithUndo("VR Drag", () => PathEditingHelper.MoveInstructionToFrame(hitInstruction.HitObject, args.Frame * _dragOffset));
_newHighlightTarget = hitInstruction?.HitObject?.GetToTarget();
}
else if (hitSegment != null)
{
WithUndo("VR Drag", () => _newInstruction = PathEditingHelper.InsertMoveInstruction(hitSegment.HitObject, args.Frame));
}
else if (args.HitResult != null)
{
throw new InvalidOperationException("unrecognized HitResult");
}
else
{
WithUndo("VR Create Instruction", () => _newInstruction = PathEditingHelper.CreateNewInstructionInActivePath(args.Frame));
_dragOffset = Matrix4.Identity;
args.CreatedObject = () => new HitResult <RsMoveInstruction>(_newInstruction, 0, args.Frame.Translation);
}
}
void CreateMoveInstruction(Matrix4 tf, string name)
{
var moveInstr = PathEditingHelper.CreateNewInstructionInActivePath(tf);
}