private Vector3 GetEndPoint(LeanFinger finger, Vector3 start)
{
// Cauculate distance based on start position, because the Target point may override Distance
var end = ScreenDepth.Convert(finger.ScreenPosition, gameObject);
var length = Vector3.Distance(start, end);
// Limit the length?
if (LengthMin > 0.0f && length < LengthMin)
{
length = LengthMin;
}
if (LengthMax > 0.0f && length > LengthMax)
{
length = LengthMax;
}
// Recalculate end
var delta = Vector3.Normalize(end - start) * length;
return(Inverse == true ? start - delta : start + delta);
}
protected override void UpdateLine(FingerData fingerData, LeanFinger finger, LineRenderer line)
{
var color0 = StartColor;
var color1 = EndColor;
var width = fingerData.Width;
if (finger != null)
{
// Reserve points
line.positionCount = 2;
// Calculate preliminary points
var point0 = ScreenDepth.Convert(finger.StartScreenPosition, gameObject);
var point1 = ScreenDepth.Convert(finger.ScreenPosition, gameObject);
if (StartAtOrigin == true)
{
point0 = transform.position;
}
// Get length, and clamp?
var length = Vector3.Distance(point0, point1);
if (LengthMin >= 0.0f && length < LengthMin)
{
length = LengthMin;
}
if (LengthMax >= 0.0f && length > LengthMax)
{
length = LengthMax;
}
if (Invert == true)
{
point1 = point0 - (point1 - point0);
}
// Write straight line
line.SetPosition(0, point0);
line.SetPosition(1, point0 + Vector3.Normalize(point1 - point0) * length);
}
else
{
fingerData.Age += Time.deltaTime;
var alpha = Mathf.InverseLerp(FadeTime, 0.0f, fingerData.Age);
color0.a *= alpha;
color1.a *= alpha;
}
if (WidthScale != 0.0f && line.positionCount == 2)
{
var point0 = line.GetPosition(0);
var point1 = line.GetPosition(1);
var length = Vector3.Distance(point0, point1);
width += length * WidthScale;
}
line.startColor = color0;
line.endColor = color1;
line.widthMultiplier = width;
}