//--------------------------------------------------------------------------------------------------
void _BuildCustomRatios()
{
bool changesFound = false;
if (BoxJoint.CustomBoxRatios == null ||
BoxJoint.CustomBoxRatios.Length != CustomRatioItems.Count)
{
changesFound = true;
}
else
{
for (int i = 0; i < BoxJoint.CustomBoxRatios.Length; i++)
{
if (BoxJoint.CustomBoxRatios[i] != CustomRatioItems[i].Value)
{
changesFound = true;
break;
}
}
}
if (!changesFound)
{
return; // No changes found
}
BoxJoint.CustomBoxRatios = CustomRatioItems.Select(item => item.Value).ToArray();
}
//--------------------------------------------------------------------------------------------------
void _CustomRatios_OnSourceUpdated(object sender, DataTransferEventArgs e)
{
var changedItem = (e.OriginalSource as ValueEditBox)?.Tag as CustomRatioItem;
if (changedItem == null || changedItem.Index >= CustomRatioItems.Count)
{
return;
}
// Clamp to 100%
var sumOfOthers = CustomRatioItems.Sum(item => item.Value) - changedItem.Value - CustomRatioItems[CustomRatioItems.Count - 1].Value;
if (sumOfOthers + changedItem.Value > 1.0)
{
// Clamp to 100% by reducing this value
CustomRatioItems[changedItem.Index] = new CustomRatioItem()
{
Index = changedItem.Index,
ReadOnly = false,
Value = Math.Max(0.0, 1.0 - sumOfOthers)
};
}
_ClampLastItem();
_BuildCustomRatios();
}
//--------------------------------------------------------------------------------------------------
void _InitializeCustomRatioItems()
{
if (BoxJoint.CustomBoxRatios == null)
{
return;
}
if (BoxJoint.BoxCount != CustomRatioItems.Count)
{
CustomRatioItems.Clear();
}
// Update
for (int i = 0; i < BoxJoint.CustomBoxRatios.Length; i++)
{
var item = new CustomRatioItem()
{
Index = i,
Value = BoxJoint.CustomBoxRatios[i],
ReadOnly = i == BoxJoint.CustomBoxRatios.Length - 1
};
if (CustomRatioItems.Count > i)
{
CustomRatioItems[i] = item;
}
else
{
CustomRatioItems.Add(item);
}
}
}
//--------------------------------------------------------------------------------------------------
public override void Cleanup()
{
if (BoxJoint != null)
{
BoxJoint.PropertyChanged -= _BoxJoint_PropertyChanged;
}
CustomRatioItems.Clear();
}
//--------------------------------------------------------------------------------------------------
void _BoxJoint_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
if (e.PropertyName == nameof(BoxJoint.BoxCount))
{
if (BoxJoint.CustomBoxRatios == null)
{
return;
}
if (BoxJoint.BoxCount <= 1)
{
return;
}
int countDiff = BoxJoint.BoxCount - CustomRatioItems.Count;
if (countDiff == 0)
{
return;
}
if (countDiff > 0)
{
// New Items
double newRatio = CustomRatioItems.Last().Value / (countDiff + 1);
for (int i = CustomRatioItems.Count - 1; i < BoxJoint.BoxCount; i++)
{
var item = new CustomRatioItem()
{
Index = i,
Value = newRatio,
ReadOnly = i == CustomRatioItems.Count
};
if (i >= CustomRatioItems.Count)
{
CustomRatioItems.Add(item);
}
else
{
CustomRatioItems[i] = item;
}
}
}
else
{
// Lost Items
while (CustomRatioItems.Count > BoxJoint.BoxCount)
{
CustomRatioItems.RemoveAt(CustomRatioItems.Count - 1);
}
_ClampLastItem();
}
_BuildCustomRatios();
}
}
//--------------------------------------------------------------------------------------------------
bool _ClampLastItem()
{
var lastItem = CustomRatioItems[CustomRatioItems.Count - 1];
var sum = CustomRatioItems.Sum(item => item.Value);
// Clamp to 100% by adjusting the last value
if (sum.IsEqual(1.0, 0.001))
{
return(false); // No adjustment needed
}
CustomRatioItems[CustomRatioItems.Count - 1] = new CustomRatioItem()
{
Index = lastItem.Index,
ReadOnly = true,
Value = Math.Max(0.0, 1.0 - (sum - lastItem.Value))
};
return(true);
}
