protected IEnumerable <MarkupStyleDash> CalculateCroswalkDash(ILineTrajectory trajectory, float startT, float endT, Vector3 direction, ILineTrajectory[] borders, float length, float width)
{
var position = trajectory.Position((startT + endT) / 2);
var dashTrajectory = new StraightTrajectory(position, position + direction, false);
var intersects = MarkupIntersect.Calculate(dashTrajectory, borders, true);
intersects = intersects.OrderBy(i => i.FirstT).ToList();
var halfLength = length / 2;
var halfWidth = width / 2;
for (var i = 1; i < intersects.Count; i += 2)
{
var startOffset = GetOffset(intersects[i - 1], halfWidth);
var endOffset = GetOffset(intersects[i], halfWidth);
var start = Mathf.Clamp(intersects[i - 1].FirstT + startOffset, -halfLength, halfLength);
var end = Mathf.Clamp(intersects[i].FirstT - endOffset, -halfLength, halfLength);
var delta = end - start;
if (delta < 0.9 * length && delta < 0.67 * width)
{
continue;
}
var startPosition = position + direction * start;
var endPosition = position + direction * end;
yield return(new MarkupStyleDash(startPosition, endPosition, direction, width, Color));
}
}
private bool FindIntersects(List <ITrajectory> A, List <ITrajectory> B, bool invert)
{
var x = !invert ? A.Count - 1 : 0;
var xPart = new StraightTrajectory(A[x]);
for (var y = !invert ? 1 : B.Count - 2; !invert ? y < B.Count : y >= 0; y += !invert ? 1 : -1)
{
var yPart = new StraightTrajectory(B[y]);
var intersect = MarkupIntersect.CalculateSingle(xPart, yPart);
if (intersect.IsIntersect)
{
if (!invert)
{
A[x] = xPart.Cut(0f, intersect.FirstT);
B[y] = yPart.Cut(intersect.SecondT, 1f);
B.RemoveRange(0, y);
}
else
{
A[x] = xPart.Cut(intersect.FirstT, 1f);
B[y] = yPart.Cut(0f, intersect.SecondT);
B.RemoveRange(y + 1, B.Count - (y + 1));
}
return(true);
}
}
return(false);
}
protected float GetOffset(MarkupIntersect intersect, float offset)
{
var tan = Mathf.Tan(intersect.Angle);
return(tan != 0 ? offset / tan : 1000f);
}
protected float GetOffset(MarkupIntersect intersect, float offset)
{
var sin = Mathf.Sin(intersect.Angle);
return(sin != 0 ? offset / sin : 1000f);
}
