public static LineSituation IsBetween(Vector2 left, Vector2 target, Vector2 right) // 3 lines start from the same point
{
Vector2 leftPerpendicular = SMath.GetPerpendicular2(left, true);
if (Vector2.Dot(leftPerpendicular, target) < 0) // to the right of left line
{
Vector2 rightPerpendicular = SMath.GetPerpendicular2(right, true);
if (Vector2.Dot(rightPerpendicular, target) > 0) // to the left of right line
{
return(LineSituation.Between);
}
else // to the right of the right line
{
return(LineSituation.OutRight);
}
}
else // to the left of left line
{
return(LineSituation.OutLeft);
}
}