void DrawCurve()
{
for (int i = 1; i <= _segmentNum; i++)
{
float t = i / ( float )_segmentNum;
int nodeIndex = 0;
Vector3 pixel = LMath.BezierCurve(controlPoints[nodeIndex].position,
controlPoints[nodeIndex + 1].position, controlPoints[nodeIndex + 2].position, t);
lineRenderer.positionCount = i;
lineRenderer.SetPosition(i - 1, pixel);
}
}
