private void DrawBezierCurve(SplineMonoBehaviour spline)
{
for (int i = 0; i < spline.Anchors.Count - 1; i++)
{
var anchor = spline.Anchors[i];
var nextAnchor = spline.Anchors[i + 1];
Handles.DrawBezier(
spline.GetPosition(anchor.Origin),
spline.GetPosition(nextAnchor.Origin),
spline.GetPosition(anchor.PointB),
spline.GetPosition(nextAnchor.PointA),
Color.grey,
null,
3f
);
}
if (spline.ClosedLoop)
{
var anchor = spline.Anchors[spline.Anchors.Count - 1];
var nextAnchor = spline.Anchors[0];
Handles.DrawBezier(
spline.GetPosition(anchor.Origin),
spline.GetPosition(nextAnchor.Origin),
spline.GetPosition(anchor.PointB),
spline.GetPosition(nextAnchor.PointA),
Color.grey,
null,
3f
);
}
}
private void DrawAnchor(
SplineMonoBehaviour spline,
SplineAnchor anchor
)
{
Handles.color = Color.white;
Handles.DrawWireCube(
spline.GetPosition(anchor.Origin),
Vector3.one * .5f
);
SplinePointPositionHandler(spline, anchor.Origin);
DrawAnchorSidePoints(spline, anchor.PointA, Color.green);
DrawAnchorSidePoints(spline, anchor.PointB, Color.blue);
Handles.color = Color.white;
Handles.DrawLine(
spline.GetPosition(anchor.Origin),
spline.GetPosition(anchor.PointA)
);
Handles.DrawLine(
spline.GetPosition(anchor.Origin),
spline.GetPosition(anchor.PointB)
);
}
private void DrawAnchorSidePoints(
SplineMonoBehaviour spline, SplinePoint point, Color sphereColor
)
{
Handles.color = sphereColor;
Handles.SphereHandleCap(
0,
spline.GetPosition(point),
Quaternion.identity, .5f,
EventType.Repaint
);
SplinePointPositionHandler(spline, point);
}
private static void SplinePointPositionHandler(
SplineMonoBehaviour currentSpline,
SplinePoint point
)
{
EditorGUI.BeginChangeCheck();
var newPosition = Handles.PositionHandle(
currentSpline.GetPosition(point),
Quaternion.identity
);
if (EditorGUI.EndChangeCheck())
{
Undo.RecordObject(currentSpline, "Change Anchor Position");
currentSpline.SetPointPosition(point, newPosition);
}
}
