private void OnSceneGUI()
{
BSpline bSpline = (BSpline)target;
var transforms = bSpline.GetChildrenOrdered();
if (transforms == null || transforms.Length == 1)
{
return;
}
// Control points
Vector3[] cp = new Vector3[transforms.Length];
// Generated control points for smooth spline
Vector3[] gcp = new Vector3[transforms.Length];
// Populate control points from children array
for (int i = 0; i < transforms.Length; i++)
{
cp[i] = transforms[i].position;
}
// Generate new set of control points
gcp[0] = cp[0];
gcp[gcp.Length - 1] = cp[cp.Length - 1];
for (int i = 1; i < gcp.Length - 1; i++)
{
gcp[i] = cp[i - 1] / 6 + (2 * cp[i]) / 3 + cp[i + 1] / 6;
}
// Render the spline as separate quadratic bezier spline instances
for (int i = 1; i < gcp.Length; i++)
{
// Construct a Bezier Spline instance and get its curve points
var b = new UniSpline.Bezier(
gcp[i - 1],
(2 * cp[i - 1] / 3) + (cp[i] / 3),
gcp[i],
cp[i - 1] / 3 + (2 * cp[i] / 3)
);
var points = b.GetCurvePoints(bSpline.subdivision);
// Render the lines
for (int j = 1; j < points.Length; j++)
{
Handles.DrawLine(points[j - 1], points[j]);
}
}
}
