/// <summary>
/// sets the Mode of the control point
/// </summary>
/// <param name="index"></param>
/// <param name="mode"></param>
public void SetControlPointMode(int index, Bezier.BezierControlPointMode mode)
{
if (index < 0 || index > Points.Length - 1)
{
Debug.LogError($"Control Point index {index} is out of Bounds!");
return;
}
// get the mode
int modeIndex = (index + 1) / 3;
_modes[modeIndex] = mode;
// keep this a loop
if (IsLoop)
{
if (modeIndex == 0)
{
_modes[_modes.Length - 1] = mode;
}
else if (modeIndex == _modes.Length - 1)
{
_modes[0] = mode;
}
}
// enforce mode
EnforceMode(index);
// presample if desired
if (DoPresample)
{
Presample();
}
}
// ######################## FUNCTIONALITY ######################## //
/// <summary>
/// Draws the Properties of the selected point
/// </summary>
protected override void DrawSelectedPointInspector()
{
base.DrawSelectedPointInspector();
EditorGUI.BeginChangeCheck();
Bezier.BezierControlPointMode mode = (Bezier.BezierControlPointMode)
EditorGUILayout.EnumPopup("Mode", _spline.GetControlPointMode(SelectedIndex));
if (EditorGUI.EndChangeCheck())
{
Undo.RecordObject(_spline, "Change Point Mode");
_spline.SetControlPointMode(SelectedIndex, mode);
EditorUtility.SetDirty(_spline);
if (AutoPresampleInEditMode)
{
_spline.Presample();
}
}
}
/// <summary>
/// Makes sure that the Control Point modes on both sides of a segment point are the same
/// </summary>
/// <param name="index"></param>
private void EnforceMode(int index)
{
// calculate the mode index and get the mode
int modeIndex = (index + 1) / 3;
Bezier.BezierControlPointMode mode = _modes[modeIndex];
// if the mode is FREE or we are not a loop and this is the start or end point of the spline, we don't need to do anything
if (mode == Bezier.BezierControlPointMode.FREE || !IsLoop && (modeIndex == 0 || modeIndex == _modes.Length - 1))
{
return;
}
// get the index of the middle point
int middleIndex = modeIndex * 3;
int fixedIndex, enforcedIndex;
// if we are before the middle point, the point before that is the fixed point
if (index <= middleIndex)
{
// set fixed index, considering looping
fixedIndex = middleIndex - 1;
if (fixedIndex < 0)
{
fixedIndex = Points.Length - 2;
}
// set the enforced index to the point after the middle point, considering looping
enforcedIndex = middleIndex + 1;
if (enforcedIndex >= Points.Length)
{
enforcedIndex = 1;
}
}
else // if we are after the middle point, the point after that is the fixed point
{
// set fixed index, considering looping
fixedIndex = middleIndex + 1;
if (fixedIndex >= Points.Length)
{
fixedIndex = 1;
}
// set the enforced index to the point after the middle point, considering looping
enforcedIndex = middleIndex - 1;
if (enforcedIndex < 0)
{
enforcedIndex = Points.Length - 2;
}
}
// get the middle point
Vector3 middle = Points[middleIndex];
// calculate the tangent that should be used
Vector3 enforcedTangent = middle - Points[fixedIndex];
// if we are in aligned mode, we need to calculate the length of the tangent
if (mode == Bezier.BezierControlPointMode.ALIGNED)
{
enforcedTangent = enforcedTangent.normalized * Vector3.Distance(middle, Points[enforcedIndex]);
}
// set the enforced point
Points[enforcedIndex] = middle + enforcedTangent;
}
