/// <summary>
/// Returns a position on the spline at the given percentage.
/// </summary>
public Vector3 GetPosition(float percentage, bool normalized = true)
{
if (normalized)
{
percentage = Reparam(percentage);
}
//evaluate curve:
CurveDetail curveDetail = GetCurve(percentage);
//avoid an error in editor usage where this index can be -1:
if (curveDetail.currentCurve < 0)
{
return(Vector3.zero);
}
SplineAnchor startAnchor = Anchors[curveDetail.currentCurve];
SplineAnchor endAnchor = Anchors[curveDetail.currentCurve + 1];
return(BezierCurves.GetPoint(startAnchor.Anchor.position, endAnchor.Anchor.position, startAnchor.OutTangent.position, endAnchor.InTangent.position, curveDetail.currentCurvePercentage, true, 100));
}
/// <summary>
/// Makes a spline longer.
/// </summary>
public GameObject[] AddAnchors(int count)
{
//refs:
GameObject anchorTemplate = Resources.Load("Anchor") as GameObject;
//create return array:
GameObject[] returnObjects = new GameObject[count];
for (int i = 0; i < count; i++)
{
//previous anchor refs:
Transform previousPreviousAnchor = null;
Transform previousAnchor = null;
if (Anchors.Length == 1)
{
previousPreviousAnchor = transform;
previousAnchor = Anchors[0].transform;
}
else if (Anchors.Length > 1)
{
previousPreviousAnchor = Anchors[Anchors.Length - 2].transform;
previousAnchor = Anchors[Anchors.Length - 1].transform;
}
//create a new anchor:
GameObject newAnchor = Instantiate <GameObject>(anchorTemplate);
newAnchor.name = newAnchor.name.Replace("(Clone)", "");
SplineAnchor anchor = newAnchor.GetComponent <SplineAnchor>();
anchor.tangentMode = defaultTangentMode;
newAnchor.transform.parent = transform;
newAnchor.transform.rotation = Quaternion.LookRotation(transform.forward);
//tilt tangents for variety as we add new anchors:
//anchor.Tilt (new Vector3 (0, 0, 0));
anchor.InTangent.Translate(Vector3.up * .5f);
anchor.OutTangent.Translate(Vector3.up * -.5f);
//position new anchor:
if (previousPreviousAnchor != null && previousAnchor != null)
{
//determine direction for next placement:
Vector3 direction = (previousAnchor.position - previousPreviousAnchor.position).normalized;
if (direction == Vector3.zero)
{
direction = transform.forward;
}
//place from the previous anchor in the correct direction:
newAnchor.transform.position = previousAnchor.transform.position + (direction * 1.5f);
}
else
{
newAnchor.transform.localPosition = Vector3.zero;
}
//catalog this new anchor for return:
returnObjects[i] = newAnchor;
}
return(returnObjects);
}
