// Update is called once per frame
private void Update()
{
float stepLength = 1.0f / Segments;
float step;
_animCounter += Time.deltaTime;
// Animate the tangents to move around in cycles
TangentOne.Translate(Mathf.Cos(_animCounter) * 0.1f, 0, 0, Space.Self);
TangentTwo.Translate(Mathf.Sin(_animCounter) * 0.1f, 0, 0, Space.Self);
// Turn GameObject positions into Vector2 objects
_startPosition = new Vector2(StartPosition.position.x, StartPosition.position.y);
_endPosition = new Vector2(EndPosition.position.x, EndPosition.position.y);
_tangentOne = new Vector2(TangentOne.position.x, TangentOne.position.y);
_tangentTwo = new Vector2(TangentTwo.position.x, TangentTwo.position.y);
// Build the line segments of the curve
for (var i = 0; i < Segments; i++)
{
step = i * stepLength;
var prevPosition = Hermite.GetVector2AtStep(_startPosition, _endPosition,
(_tangentOne - _startPosition) * TangentOneWeight,
-(_tangentTwo - _endPosition) * TangentTwoWeight,
step);
var nextPosition = Hermite.GetVector2AtStep(_startPosition, _endPosition,
(_tangentOne - _startPosition) * TangentTwoWeight,
-(_tangentTwo - _endPosition) * TangentTwoWeight,
step + stepLength);
_lines[i].transform.position = new Vector3(prevPosition.x, prevPosition.y, 0);
_lines[i].transform.LookAt(new Vector3(nextPosition.x, nextPosition.y, 0), Vector3.up);
_lines[i].transform.localScale = new Vector3(0.2f, 0.2f, (prevPosition - nextPosition).magnitude);
}
// Debug Draw methods only show up when Editor is playing and paused
Hermite.DrawVector2(_startPosition, _endPosition, (_tangentOne - _startPosition), -(_tangentTwo - _endPosition), Segments);
Debug.DrawLine(_startPosition, _tangentOne, Color.cyan);
Debug.DrawLine(_endPosition, _tangentTwo, Color.magenta);
}
