/// <summary>
/// Determine and store the length of each curve segment along the whole path
///
/// Assumption:
/// points has 3*n+1 points in it.
///
/// </summary>
private void FillInSegmentLengths()
{
if (lengthRatios == null)
{
throw new Exception("lengthRatios must be defined assigned before calling FillInEndTangents");
}
pathLength = 0;
for (int i = 0; i < segmentCount; i++)
{
LengthRatio lr = new LengthRatio();
lr.length =
BezierSprite.CalculateCurveLength(
points.GetRange(i * 3, 4).ToArray() // there are 4 points to each segment. * 3 because we start each next segment with the end point of the previous segment
);
lr.ratio = defaultRatio; // default value since we haven't calc'd ratios yet
lengthRatios[i] = lr;
pathLength += lr.length; // calc length of whole path
}
}
