/// <summary>
/// Create a sprite that follows a Bezier path.
///
/// Path format is (similar to svg) (g=guidepoint):
/// g1p1x,g1p1y[space]g2p1x,g2p1y[space]p1x,p1y
/// g1p2x,g1p2y[space]g2p2x,g2p2y[space]p2x,p2y
/// etc...
/// So it's 2 guidepoints followed by end point.
/// This will follow simple Bezier paths created using GIMP and exported as SVG.
/// </summary>
/// <param name="p_startPoint">Point where sprite begins</param>
/// <param name="p_path">String of points sprite should follow</param>
/// <param name="p_ratio">double value indicating stepping size as a fraction of distance along path to take with each step</param>
public BezierSprite(Point p_startPoint, string p_path, double p_ratio)
{
startPoint = p_startPoint;
points = new List <Point>();
points.Add(p_startPoint);
points.AddRange(BezierSprite.PointsStringToList(p_path));
if ((points.Count - 1) % 3 != 0)
{
throw new ArgumentException("The number of points in the path must be divisible by 3");
}
segmentIndex = 0;
segmentCount = (points.Count - 1) / 3;
lengthRatios = new List <LengthRatio>(segmentCount);
for (int i = 0; i < segmentCount; i++)
{
lengthRatios.Add(new LengthRatio());
}
FillInSegmentLengths();
FillInEndTangents();
loopCount = 0;
remainingLoops = 1;
traversalTime = 0.0d;
speed = 0;
completed = false;
ratioStep = lengthRatios[0].ratio;
}
