/// <summary>
/// Checks if this patch can connect to a existing lower patch with:
/// - Incoming line left/right
/// - Transition form this patch
/// </summary>
private static bool CheckLowerStepConnection(SfcPatchControl control, bool skippedTransition)
{
PatchEntity lowerPatch = control.Master.Data.SfcEntity.Lookup(control.Data.X, control.Data.Y + 1);
bool hasLowerActiveStep = lowerPatch != null && lowerPatch.SfcStepType != StepType.Unused;
if (!hasLowerActiveStep)
{
return(false);
}
if (skippedTransition || control.Data.ContainsTransition())
{
return(true);
}
PatchEntity leftPatch = control.Master.Data.SfcEntity.Lookup(control.Data.X - 1, control.Data.Y);
return(HasLowerBranchConnection(control.Data, leftPatch));
}
/// <summary>
/// Updates the metadata according to the data model.
/// </summary>
public void UpdatePatch(SfcPatchControl control)
{
HasPossibleTransitionSkip = CheckPossibleTransitionSkip(control.Master, control.Data);
RequestsLowerStepConnection = CheckLowerStepConnection(control, HasPossibleTransitionSkip);
}