// Allow the points to be dragged individually.
private Vector3 ShowPoint(int index)
{
Vector3 point = m_handleTransform.TransformPoint(m_path.GetControlPoint(index));
float size = HandleUtility.GetHandleSize(point); // Keep the handle size constant regardless of view.
if (index == 0)
{
size *= 2f; // Make the first point larger than the rest.
}
// Show Button Handles for each point.
if (Handles.Button(point, m_handleRotation, size * m_handleSize, size * m_pickSize, Handles.DotCap))
{
m_selectedIndex = index;
Repaint(); // Force the Inspector GUI to refresh.
}
// Show the Transform Handle for the selected point.
if (m_selectedIndex == index)
{
EditorGUI.BeginChangeCheck();
point = Handles.DoPositionHandle(point, m_handleRotation);
if (EditorGUI.EndChangeCheck())
{
// Enable Undo for this action.
Undo.RecordObject(m_path, "Move Point");
// Let Unity know that a change was made.
EditorUtility.SetDirty(m_path);
// Update the path's point position in localspace.
m_path.SetControlPoint(index, m_handleTransform.InverseTransformPoint(point));
}
}
return(point);
}