/// Makes sure the curve textures and control textures are in a consistent state.
private void EnsureTexturesInited()
{
if (GrassTextures.Count == 0)
{
GrassTextures.Add(GetDefaultGrassTexture());
}
}
/// Adds new texture to the end of the list.
public void AppendGrassTexture()
{
GrassTextures.Add(GetDefaultGrassTexture());
}