public Vector3[] CalculateEvenlySpacedPoints(float spacing, float resolution = 1)
{
List <Vector3> evenlySpacedPoints = new List <Vector3>();
evenlySpacedPoints.Add(points[0]);
Vector3 previousPoint = points[0];
float dstSinceLastEvenPoint = 0;
for (int segmentIndex = 0; segmentIndex < NumSegments; segmentIndex++)
{
Vector3[] p = GetPointsInSegment(segmentIndex);
float controlNetLength = Vector3.Distance(p[0], p[1]) + Vector3.Distance(p[1], p[2]) + Vector3.Distance(p[2], p[3]);
float estimedCurveLength = Vector3.Distance(p[0], p[3]) + controlNetLength / 2f;
int divisions = Mathf.CeilToInt(estimedCurveLength * resolution * 10);
float t = 0;
while (t <= 1)
{
t += 1f / divisions;
Vector3 pointOnCurve = Bezier.Evaluate(p[0], p[1], p[2], p[3], t);
dstSinceLastEvenPoint += Vector3.Distance(previousPoint, pointOnCurve);
while (dstSinceLastEvenPoint >= spacing)
{
float overshootDst = dstSinceLastEvenPoint - spacing;
Vector3 newEvenlySpacedPoint = pointOnCurve + (previousPoint - pointOnCurve).normalized * overshootDst;
evenlySpacedPoints.Add(newEvenlySpacedPoint);
dstSinceLastEvenPoint = overshootDst;
previousPoint = newEvenlySpacedPoint;
}
previousPoint = pointOnCurve;
}
}
return(evenlySpacedPoints.ToArray());
}
float GetPercentOnBezier(Vector3[] points, Vector2 mousePos, float t, float offset, int count)
{
if (count <= 0)
{
return(t);
}
Vector2 bezierPosLeft = HandleUtility.WorldToGUIPoint(Bezier.Evaluate(points[0], points[1], points[2], points[3], t - offset));
Vector2 bezierPosRight = HandleUtility.WorldToGUIPoint(Bezier.Evaluate(points[0], points[1], points[2], points[3], t + offset));
float dstLeft = Vector2.Distance(mousePos, bezierPosLeft);
float dstRight = Vector2.Distance(mousePos, bezierPosRight);
return(GetPercentOnBezier(points, mousePos, (dstLeft < dstRight) ? t - offset : t + offset, offset / 2, --count));
}
Vector3 GetCloserPointInSegment(Vector2 mousePos, int segmentIndex)
{
Vector3[] points = LocalToWorld(Path.GetPointsInSegment(segmentIndex));
return(Bezier.Evaluate(points[0], points[1], points[2], points[3], GetPercentOnBezier(points, mousePos, 0.5f, 0.25f, 10)));
}
Vector3 GetCurvesVector(int index, float keyValue)
{
Vector3[] points = path.GetPointsInSegment(index);
return(creator.startTransform.TransformPoint(Bezier.Evaluate(points[0], points[1], points[2], points[3], keyValue)));
}