private void OnSceneGUI()
{
BezierSpline curve = (BezierSpline)target;
Transform t = curve.transform;
Quaternion r = Tools.pivotRotation == PivotRotation.Local ? t.rotation : Quaternion.identity;
for (int i = 0; i < curve.points.Count; i++)
{
Vector3 p = t.TransformPoint(curve.points[i]);
Handles.color = Color.white;
float size = HandleUtility.GetHandleSize(p);
if (Handles.Button(p, r, size * 0.04f, size * 0.06f, Handles.DotCap))
{
selectedIndex = i;
Repaint();
}
if (selectedIndex == i)
{
EditorGUI.BeginChangeCheck();
p = Handles.DoPositionHandle(p, r);
if (EditorGUI.EndChangeCheck())
{
Undo.RecordObject(curve, "Move Point");
curve.SetControlPoint(i, t.InverseTransformPoint(p));
EditorUtility.SetDirty(curve);
}
}
}
Handles.color = curve.tangentColor;
for (int i = 0; i < curve.points.Count - 1; i++)
{
if (i % 3 == 1)
{
continue;
}
Vector3 p0 = t.TransformPoint(curve.points[i]);
Vector3 p1 = t.TransformPoint(curve.points[i + 1]);
Handles.DrawLine(p0, p1);
}
Handles.color = curve.curveColor;
for (int i = 0; i < curve.points.Count / 3; i++)
{
Vector3 p0 = t.TransformPoint(curve.points[3 * i]);
Vector3 p1 = t.TransformPoint(curve.points[3 * i + 1]);
Vector3 p2 = t.TransformPoint(curve.points[3 * i + 2]);
Vector3 p3 = t.TransformPoint(curve.points[3 * i + 3]);
Handles.DrawBezier(p0, p3, p1, p2, curve.curveColor, null, 2f);
}
Handles.color = curve.uniformSamplingColor;
if (Camera.current)
{
Vector3 up = Camera.current.transform.up;
Vector3 right = Camera.current.transform.right;
for (float i = 0; i < curve.points.Count / 3; i += 0.02f)
{
Vector3 p0 = curve.EvaluateUniform(i);
float size = HandleUtility.GetHandleSize(p0) * 0.02f;
Vector3[] rect = new Vector3[] { p0 - right * size, p0 - up * size, p0 + right * size, p0 + up * size };
Handles.DrawSolidRectangleWithOutline(rect, curve.uniformSamplingColor, curve.uniformSamplingColor);
}
}
}
